diff --git a/CHANGELOG.md b/CHANGELOG.md
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--- /dev/null
+++ b/CHANGELOG.md
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+# Changelog
+
+`stackcollapse-ghc` uses [PVP Versioning][1].
+The changelog is available [on GitHub][2].
+
+## 0.0.1
+
+* Initially created.
+
+[1]: https://pvp.haskell.org
+[2]: https://github.com/marcin-rzeznicki/stackcollapse-ghc/releases
diff --git a/LICENSE b/LICENSE
new file mode 100644
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,674 @@
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+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.
diff --git a/README.md b/README.md
new file mode 100644
--- /dev/null
+++ b/README.md
@@ -0,0 +1,159 @@
+# stackcollapse-ghc
+
+[![Build status](https://img.shields.io/travis/marcin-rzeznicki/stackcollapse-ghc.svg?logo=travis)](https://travis-ci.org/marcin-rzeznicki/stackcollapse-ghc)
+[![Hackage](https://img.shields.io/hackage/v/stackcollapse-ghc.svg?logo=haskell)](https://hackage.haskell.org/package/stackcollapse-ghc)
+[![Stackage Lts](http://stackage.org/package/stackcollapse-ghc/badge/lts)](http://stackage.org/lts/package/stackcollapse-ghc)
+[![Stackage Nightly](http://stackage.org/package/stackcollapse-ghc/badge/nightly)](http://stackage.org/nightly/package/stackcollapse-ghc)
+[![GPL-3.0-only license](https://img.shields.io/badge/license-GPL--3.0--only-blue.svg)](LICENSE)
+
+Program to fold GHC prof files into flamegraph input
+
+## Motivation
+
+The reasons why this package exists despite other packages with similar functionality (not including the NIH syndrome) boil down to:
+* it does only one thing (stack collapsing), so it's up to the user to install flamegraph scripts, pass options etc (in my eyes it's not a limitation, on the contrary),
+* output control: annotations (color profiles), extending traces from a configured set of modules with the source locations or toggling qualified names,
+* precise ticks and/or bytes with `-p` reports,
+* it's fast
+
+Table of Contents
+-----------------
+  * [Basic usage](#basic-usage)
+    * [Ticks](#visualize-ticks)
+    * [Allocations](#visualize-allocations)
+  * [Cookbook](#cookbook)
+    * [Colors](#using-distinct-colors-for-modules)
+    * [Qualified names](#turning-off-qualified-names)
+    * [Source locations](#adding-source-locations)
+  * [All options](#all-options)
+  * [Installation](#installation)
+
+## Basic usage
+
+(all the following examples assume you have installed `flamegraph` on your path)
+
+### Visualize ticks
+
+If you have a detailed prof file (`-P` RTS option)
+
+```bash
+stackcollapse-ghc prof_file | flamegraph.pl --title 'Example' --subtitle 'Time' --countname ticks > path_to_svg
+```
+
+If you have a standard prof file (`-p` RTS option)
+
+```bash
+stackcollapse-ghc -p prof_file | flamegraph.pl --title 'Example' --subtitle 'Time' --countname ticks > path_to_svg
+```
+
+![Ticks](./examples/basicTime.svg)
+
+### Visualize allocations
+
+If you have a detailed prof file (`-P` RTS option)
+
+```bash
+stackcollapse-ghc --alloc prof_file | flamegraph.pl --title 'Example' --subtitle 'Bytes allocated' --countname bytes > path_to_svg
+```
+
+If you have a standard prof file (`-p` RTS option)
+
+```bash
+stackcollapse-ghc --alloc -p prof_file | flamegraph.pl --title 'Example' --subtitle 'Bytes allocated' --countname bytes > path_to_svg
+```
+
+![Bytes](./examples/basicAlloc.svg)
+
+## Cookbook
+
+### Using distinct colors for modules
+
+Works out of the box. You just need to tell the program which modules are "yours" (by default it only assumes `Main`) and pass the desired color scheme to the flamegraph script
+
+```bash
+stackcollapse-ghc -u Example prof_file | flamegraph.pl --title 'Example with colors' --subtitle 'Time' --countname ticks --color java > path_to_svg
+```
+
+(the traces coming from your modules are green under this palette)
+
+![JavaColor](./examples/javaColor.svg)
+
+Or you can use the `mem` pallette to track allocations
+
+```bash
+stackcollapse-ghc -u Example --alloc -p prof_file | flamegraph.pl --title 'Example with colors' --subtitle 'Bytes allocated' --countname bytes --color mem > path_to_svg
+```
+
+![MemColor](./examples/memColor.svg)
+
+This is achieved by using a thing called _annotations_. `stackcollapse-ghc` adds the annotation `_[j]` to traces from modules in `-u`, `_[i]` to _CAFs_ and `_[k]` to the "kernel" modules, such as `GHC` or `System`
+
+### Turning off qualified names
+
+You might want to tone down the visual clutter in your flamegraph by turning off the qualified names for some modules. You can use the `-u` option for this just as in the color pallete examples. Traces from the modules that you have passed in `-u` will have unqualified names by default
+
+```bash
+stackcollapse-ghc -u Example -p prof_file | flamegraph.pl --title 'Example' --subtitle 'Time' --countname ticks > path_to_svg
+```
+
+![UserModules](./examples/userModules.svg)
+
+If you want to use visual indications *and* retain qualified names you can use the following option
+
+```bash
+stackcollapse-ghc -Q -u Example -p prof_file | flamegraph.pl --title 'Example' --subtitle 'Time' --countname ticks --color java > path_to_svg
+```
+
+### Adding source locations
+
+If you want to see the source of the traces on the generated flamegraph, you can do it selectively by combining `-u` options to mark the modules for which you want to include locations, with `-s`
+
+```bash
+stackcollapse-ghc -s -u Example prof_file | flamegraph.pl --title 'Example with sources' --subtitle 'Time' --countname ticks > path_to_svg
+```
+
+![UserSources](./examples/userSrc.svg)
+
+Alternatively, you can simply include it for all traces (with or without `-u` depending on whether you need it for something else, such as colors or qualified names)
+
+```bash
+stackcollapse-ghc -S prof_file | flamegraph.pl --title 'Example with sources' --subtitle 'Time' --countname ticks > path_to_svg
+```
+
+![AllSources](./examples/allSrc.svg)
+
+## All options
+
+```
+Usage: stackcollapse-ghc [OPTIONS] FILE
+OPTIONS:
+  -P                                            Process detailed prof file ('-P' or '-pa' options) (default)
+  -p                                            Process standard prof file ('-p' option)
+  -u module_name  --user-module=module_name     Name of an user module (may be repeated to add more than one). Matches the whole "hierarchy", so `MyModule` matches `MyModule` as well as `MyModule.Internal`
+  -t              --time                        Collapse with respect to time (default)
+  -a              --alloc                       Collapse with respect to allocations
+  -S                                            Append source location to every function name
+  -s                                            Append source location to functions defined in user modules
+                  --no-source                   Do not append source location (default)
+  -Q                                            Always use qualified functon names
+                  --no-qualified                Do not use qualified function names
+  -q                                            Use qualified names for functions not defined in user modules (default)
+  -A              --annotations, --annot        Add annotations to output (j - user modules, k - GHC and System, i - CAFs)
+                  --no-annotations, --no-annot  Do not add annotations to output
+
+```
+
+## Installation
+
+You can install it from [Hackage](https://hackage.haskell.org/) or [Stackage](https://www.stackage.org/) by using either `cabal`:
+
+```
+cabal v2-update
+cabal v2-install stackcollapse-ghc
+```
+
+or `stack`
+
+```
+stack install stackcollapse-ghc
+```
diff --git a/app/Main.hs b/app/Main.hs
new file mode 100644
--- /dev/null
+++ b/app/Main.hs
@@ -0,0 +1,152 @@
+{-  stackcollapse-ghc - fold GHC prof files into flamegraph input
+    Copyright (C) 2020 Marcin Rzeźnicki
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+-}
+module Main (main) where
+
+import           Config
+import           UserModule
+import           StackCollapse
+import           System.Console.GetOpt
+import           System.Environment (getArgs, getProgName)
+import           System.Exit
+import           System.IO (Handle, hPutStrLn, stderr, hPutChar, stdout)
+import           Data.Functor ((<&>))
+import           Data.Function ((&))
+import           Control.Monad (foldM)
+import           Control.Exception
+import qualified Data.ByteString.Lazy as Lazy
+
+cmdLineOpts
+  :: [OptDescr (StackCollapseConfig -> Either String StackCollapseConfig)]
+cmdLineOpts =
+  [ Option
+      ['P']
+      []
+      (NoArg $ \config -> Right config { inputType = Detailed })
+      "Process detailed prof file ('-P' or '-pa' options) (default)"
+  , Option
+      ['p']
+      []
+      (NoArg $ \config -> Right config { inputType = Standard })
+      "Process standard prof file ('-p' option)"
+  , Option
+      ['u']
+      ["user-module"]
+      (ReqArg
+         (\input config -> parseUserModule input <&> prependUserModule config)
+         "module_name")
+      "Name of an user module (may be repeated to add more than one). Matches the whole \"hierarchy\", so `MyModule` matches `MyModule` as well as `MyModule.Internal`"
+  , Option
+      ['t']
+      ["time"]
+      (NoArg $ \config -> Right config { operationMode = Time })
+      "Collapse with respect to time (default)"
+  , Option
+      ['a']
+      ["alloc"]
+      (NoArg $ \config -> Right config { operationMode = Alloc })
+      "Collapse with respect to allocations"
+  , Option
+      ['S']
+      []
+      (NoArg $ \config -> Right config { sourceMode = SourceAlways })
+      "Append source location to every function name"
+  , Option
+      ['s']
+      []
+      (NoArg $ \config -> Right config { sourceMode = SourceUser })
+      "Append source location to functions defined in user modules"
+  , Option
+      []
+      ["no-source"]
+      (NoArg $ \config -> Right config { sourceMode = SourceNever })
+      "Do not append source location (default)"
+  , Option
+      ['Q']
+      []
+      (NoArg $ \config -> Right config { functionNameMode = QualifiedAlways })
+      "Always use qualified functon names"
+  , Option
+      []
+      ["no-qualified"]
+      (NoArg $ \config -> Right config { functionNameMode = QualifiedNever })
+      "Do not use qualified function names"
+  , Option
+      ['q']
+      []
+      (NoArg $ \config -> Right config { functionNameMode = QualifiedKernel })
+      "Use qualified names for functions not defined in user modules (default)"
+  , Option
+      ['A']
+      ["annotations", "annot"]
+      (NoArg $ \config -> Right config { annotationMode = WithAnnotations })
+      "Add annotations to output (j - user modules, k - GHC and System, i - CAFs)"
+  , Option
+      []
+      ["no-annotations", "no-annot"]
+      (NoArg $ \config -> Right config { annotationMode = NoAnnotations })
+      "Do not add annotations to output"]
+
+main :: IO ()
+main = getArgs >>= run
+
+run :: [String] -> IO ()
+run [] = printUsage stdout
+run ["-h"] = printUsage stdout
+run ["--help"] = printUsage stdout
+run args = case getOpt RequireOrder cmdLineOpts args of
+  (opts, [path], []) -> do
+    let configOrError = foldM (&) defaultConfig opts
+    either
+      invalidArgumentError
+      ((`catch` runtimeError) . runStackCollapse path)
+      configOrError
+  (_, _, errors)     -> invalidUsageError errors
+
+runStackCollapse :: FilePath -> StackCollapseConfig -> IO ()
+runStackCollapse inpath config = stackCollapseFromPath config inpath
+  >>= either (runtimeError . userError) Lazy.putStrLn . collapseStack
+
+printUsage :: Handle -> IO ()
+printUsage h = do
+  exe <- getProgName
+  hPutChar h '\n'
+  hPutStrLn h
+    $ usageInfo ("Usage: " ++ exe ++ " [OPTIONS] FILE\nOPTIONS:") cmdLineOpts
+  hPutChar h '\n'
+
+invalidUsageError :: [String] -> IO a
+invalidUsageError errorMessages = do
+  let errorMessage = concat errorMessages
+  putErrLn errorMessage
+  printUsage stderr
+  exitFailure
+
+invalidArgumentError :: String -> IO a
+invalidArgumentError errorMessage = do
+  putErrLn $ "Invalid argument: " ++ errorMessage
+  exitFailure
+
+runtimeError :: IOError -> IO a
+runtimeError ioerror = do
+  putErrLn $ displayException ioerror
+  exitWith $ ExitFailure 2
+
+putErrLn :: String -> IO ()
+putErrLn = hPutStrLn stderr
+
+
+
diff --git a/src/CallTree.hs b/src/CallTree.hs
new file mode 100644
--- /dev/null
+++ b/src/CallTree.hs
@@ -0,0 +1,50 @@
+{-  stackcollapse-ghc - fold GHC prof files into flamegraph input
+    Copyright (C) 2020 Marcin Rzeźnicki
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+-}
+{-# LANGUAGE LambdaCase #-}
+
+module CallTree (CallTree(..), insertTrace, CallForest, extractForest) where
+
+import           Trace
+import           Data.Tree.Zipper
+import           Data.Tree
+
+data CallTree = MkTree !Int (TreePos Full Trace)
+              | EmptyTree
+
+insertTrace :: Trace -> Int -> CallTree -> Either String CallTree
+insertTrace trace 0 EmptyTree = Right $ MkTree 0 $ fromTree $ Node trace []
+insertTrace _ _ EmptyTree = Left "the first line should not be indented"
+insertTrace trace level (MkTree depth cursor)
+  | level == succ depth = Right $ MkTree level $ insertChild cursor
+  | level <= depth = MkTree level <$> insertSibling (depth - level) cursor
+  | otherwise = Left "invalid indentation"
+  where
+    newNode = Node trace []
+
+    insertChild = insert newNode . children
+
+    insertSibling 0 = Right . insert newNode . nextSpace
+    insertSibling up = (\case
+                          Just parent' -> insertSibling (up - 1) parent'
+                          Nothing      -> Left "bug: no parent")
+      . parent
+
+type CallForest = Forest Trace
+
+extractForest :: CallTree -> CallForest
+extractForest EmptyTree = []
+extractForest (MkTree _ cursor) = toForest cursor
diff --git a/src/CallTreeBuilder.hs b/src/CallTreeBuilder.hs
new file mode 100644
--- /dev/null
+++ b/src/CallTreeBuilder.hs
@@ -0,0 +1,99 @@
+{-  stackcollapse-ghc - fold GHC prof files into flamegraph input
+    Copyright (C) 2020 Marcin Rzeźnicki
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+-}
+{-# LANGUAGE NamedFieldPuns #-}
+{-# LANGUAGE OverloadedStrings #-}
+
+module CallTreeBuilder
+    ( NumberedLine
+    , numberedLines
+    , tryBuildCallForest
+    , CallForest
+    , OperationMode) where
+
+import           Format (MayFail, ColumnList, Format, Inherited(..))
+import           CallTree
+import           Config (OperationMode(..))
+import           Data.ByteString (ByteString)
+import qualified Data.ByteString.Char8 as Char8
+import           Control.Foldl (FoldM(..), foldM)
+import           Control.Monad.Trans.State
+import           Control.Arrow
+
+type NumberedLine = (Int, ByteString)
+
+numberedLines :: ByteString -> [NumberedLine]
+numberedLines = zip [1 :: Int ..] . Char8.lines
+
+tryBuildCallForest
+  :: Format -> OperationMode -> [NumberedLine] -> MayFail CallForest
+tryBuildCallForest format opMode nls =
+  evalStateT (foldM builder $ map (second splitLine) nls) Building
+  where
+    builder = callTreeBuilder format opMode
+
+type CallTreeBuilder =
+  FoldM (StateT BuilderState MayFail) NumberedRow CallForest
+
+type NumberedRow = (Int, Row)
+
+data BuilderState = Skipping Int
+                  | Building
+
+callTreeBuilder :: Format -> OperationMode -> CallTreeBuilder
+callTreeBuilder format opMode = FoldM
+  (\tree -> StateT . build tree)
+  (return EmptyTree)
+  (return . extractForest)
+  where
+    build callTree (_, Row { level }) (Skipping depth)
+      | level > depth = return (callTree, Skipping depth)
+    build callTree (lineNumber, Row { level, columns }) _ = do
+      (trace, inherited) <- format' lineNumber columns
+      a <- insertTrace trace level callTree
+      let s = if skip inherited
+              then Skipping level
+              else Building
+      return (a, s)
+
+    skip = case opMode of
+      Time  -> (== 0.0) . inheritedTime
+      Alloc -> (== 0.0) . inheritedAlloc
+
+    format' lineNumber = left (printErrorLocation lineNumber ++) . format
+
+    printErrorLocation
+      lineNumber = "confused at line " ++ show lineNumber ++ ": "
+
+data Row = Row { level :: !Int, columns :: ColumnList }
+
+splitLine :: ByteString -> Row
+splitLine line = Row { level = Char8.length ident, columns = splitLine' rest }
+  where
+    (ident, rest) = Char8.span (== ' ') line
+
+    splitLine' bs
+      | Char8.null bs = []
+      | otherwise = case Char8.head bs of
+        ' ' -> splitLine' $ Char8.dropWhile (== ' ') bs
+        '<'
+          | "<no location info>" `Char8.isPrefixOf` bs
+            -> let (nli, bs') = Char8.splitAt 18 bs
+               in nli:splitLine' bs'
+        _   -> let (column, bs') = Char8.break (== ' ') bs
+               in column:splitLine' bs'
+
+
diff --git a/src/Config.hs b/src/Config.hs
new file mode 100644
--- /dev/null
+++ b/src/Config.hs
@@ -0,0 +1,75 @@
+{-  stackcollapse-ghc - fold GHC prof files into flamegraph input
+    Copyright (C) 2020 Marcin Rzeźnicki
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+-}
+{-# LANGUAGE DerivingStrategies #-}
+{-# LANGUAGE NamedFieldPuns #-}
+
+module Config
+    ( StackCollapseConfig(..)
+    , defaultConfig
+    , InputType(..)
+    , SourceMode(..)
+    , FunctionNameMode(..)
+    , OperationMode(..)
+    , AnnotationMode(..)
+    , prependUserModule) where
+
+import           UserModule
+
+data StackCollapseConfig =
+  Config { userModules :: [UserModule]
+         , sourceMode :: SourceMode
+         , functionNameMode :: FunctionNameMode
+         , operationMode :: OperationMode
+         , annotationMode :: AnnotationMode
+         , inputType :: InputType
+         }
+
+defaultConfig :: StackCollapseConfig
+defaultConfig = Config { userModules = [userModule_Main]
+                       , sourceMode = SourceNever
+                       , functionNameMode = QualifiedKernel
+                       , operationMode = Time
+                       , annotationMode = WithAnnotations
+                       , inputType = Detailed
+                       }
+
+data InputType = Standard
+               | Detailed
+
+data SourceMode = SourceAlways
+                | SourceUser
+                | SourceNever
+  deriving stock (Eq)
+
+data FunctionNameMode = QualifiedAlways
+                      | QualifiedKernel
+                      | QualifiedNever
+  deriving stock (Eq)
+
+data OperationMode = Time
+                   | Alloc
+
+data AnnotationMode = NoAnnotations
+                    | WithAnnotations
+  deriving stock (Eq)
+
+prependUserModule :: StackCollapseConfig -> UserModule -> StackCollapseConfig
+prependUserModule config@Config { userModules } modu =
+  config { userModules = modu:userModules }
+
+
+
diff --git a/src/Format.hs b/src/Format.hs
new file mode 100644
--- /dev/null
+++ b/src/Format.hs
@@ -0,0 +1,85 @@
+{-  stackcollapse-ghc - fold GHC prof files into flamegraph input
+    Copyright (C) 2020 Marcin Rzeźnicki
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+-}
+{-# LANGUAGE OverloadedStrings #-}
+
+module Format
+    ( MayFail
+    , ColumnList
+    , Format
+    , Inherited(..)
+    , readSrc
+    , readCostCentre
+    , readText
+    , readInteger
+    , readDouble) where
+
+import           Trace
+import           Data.ByteString (ByteString)
+import qualified Data.ByteString.Char8 as Char8
+import           Data.Text (Text)
+import qualified Data.Text as T
+import           Data.Text.Encoding (decodeUtf8')
+import           Control.Arrow (left)
+import           Text.Read (readMaybe)
+
+type MayFail = Either String
+
+type ColumnList = [ByteString]
+
+type Format = ColumnList -> MayFail (Trace, Inherited)
+
+data Inherited =
+  Inherited { inheritedTime :: Double, inheritedAlloc :: Double }
+
+readSrc :: ByteString -> MayFail Src
+readSrc = fmap mkSrc . readText
+  where
+    mkSrc "<built-in>" = BuiltIn
+    mkSrc "<entire-module>" = EntireModule
+    mkSrc "<no location info>" = NoLocationInfo
+    mkSrc text = Location text
+
+readCostCentre :: ByteString -> MayFail CostCentre
+readCostCentre = fmap mkCC . readText
+  where
+    mkCC "MAIN" = Main
+    mkCC "CAF" = CAF Nothing
+    mkCC text
+      | "CAF:" `T.isPrefixOf` text = CAF (Just text)
+      | otherwise = SCC text
+
+readText :: ByteString -> MayFail Text
+readText = left show . decodeUtf8'
+
+showText :: ByteString -> String
+showText = either (const "<malformed UTF-8>") T.unpack . readText
+
+readInteger :: ByteString -> MayFail Integer
+readInteger chars = case Char8.readInteger chars of
+  Just (i, chars')
+    | Char8.null chars' -> Right i
+    | otherwise -> _error
+  Nothing          -> _error
+  where
+    _error = Left $ "expected integer in place of '" ++ showText chars ++ "' "
+
+readDouble :: ByteString -> MayFail Double
+readDouble chars = maybe _error Right (readMaybe $ Char8.unpack chars)
+  where
+    _error = Left $ "expected double in place of '" ++ showText chars ++ "' "
+
+
diff --git a/src/Orphans.hs b/src/Orphans.hs
new file mode 100644
--- /dev/null
+++ b/src/Orphans.hs
@@ -0,0 +1,35 @@
+{-  stackcollapse-ghc - fold GHC prof files into flamegraph input
+    Copyright (C) 2020 Marcin Rzeźnicki
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+-}
+{-# LANGUAGE TypeFamilies #-}
+
+module Orphans (TreeF(..)) where
+
+import           Data.Tree (Tree(..))
+import           Data.Functor.Foldable
+
+data TreeF a r = NodeF a [r]
+
+instance Functor (TreeF a) where
+  fmap f (NodeF a rs) = NodeF a (map f rs)
+
+type instance Base (Tree a) = TreeF a
+
+instance Recursive (Tree a) where
+  project (Node a sub) = NodeF a sub
+
+instance Corecursive (Tree a) where
+  embed (NodeF a rs) = Node a rs
diff --git a/src/Profiles.hs b/src/Profiles.hs
new file mode 100644
--- /dev/null
+++ b/src/Profiles.hs
@@ -0,0 +1,160 @@
+{-  stackcollapse-ghc - fold GHC prof files into flamegraph input
+    Copyright (C) 2020 Marcin Rzeźnicki
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+-}
+{-# LANGUAGE NamedFieldPuns #-}
+{-# LANGUAGE OverloadedStrings #-}
+
+module Profiles (Standard(..), Detailed(..), Profile(..), MayFail) where
+
+import           Format
+import           CallTreeBuilder
+import           Trace
+import           Data.ByteString (ByteString)
+import qualified Data.ByteString.Char8 as Char8
+import           Data.Char (isSpace)
+import           Data.List.NonEmpty (NonEmpty(..), nonEmpty)
+import qualified Data.List.NonEmpty as NEL
+import           Data.Either.Extra (maybeToEither)
+import           Control.Applicative (liftA2)
+import           Control.Arrow (left)
+import           Control.Monad
+import           Safe (tailMay)
+
+newtype Detailed = ProfileDetailed ByteString
+
+detailedProfStart :: Detailed -> MayFail [NumberedLine]
+detailedProfStart (ProfileDetailed bs) = skipToMain $ numberedLines bs
+
+newtype Standard = ProfileStandard ByteString
+
+totalsStart :: Standard -> MayFail (NonEmpty NumberedLine)
+totalsStart (ProfileStandard bs) = skipToTotalTime $ numberedLines bs
+
+class Profile p where
+  buildCallForest :: OperationMode -> p -> MayFail CallForest
+
+instance Profile Detailed where
+  buildCallForest
+    opMode = detailedProfStart >=> tryBuildCallForest format opMode
+    where
+      format
+        [_cc, _module, _src, _, _, _, _, _inhTime, _inhAlloc, _ticks, _bytes] =
+        let readTrace = Trace <$> readCostCentre _cc
+              <*> readText _module
+              <*> readSrc _src
+              <*> readInteger _ticks
+              <*> readInteger _bytes
+            readInherited =
+              Inherited <$> readDouble _inhTime <*> readDouble _inhAlloc
+        in liftA2 (,) readTrace readInherited
+      format _ = Left
+        "missing columns. Is the input file in the correct format (-P/-pa)?"
+
+instance Profile Standard where
+  buildCallForest opMode p = do
+    start <- totalsStart p
+    let (totalTimeLine, afterTotalTime) = NEL.uncons start
+    totalTicks <- left ((printError "total ticks" $ fst totalTimeLine) ++)
+      $ readTotalTicks
+      $ snd totalTimeLine
+    (totalAllocLine :| afterTotals)
+      <- maybeToEither (eofError "after the total ticks line") afterTotalTime
+    totalBytes <- left ((printError "total bytes" $ fst totalAllocLine) ++)
+      $ readTotalBytes
+      $ snd totalAllocLine
+    input <- skipToMain afterTotals
+    tryBuildCallForest (format totalTicks totalBytes) opMode input
+    where
+      format
+        totalTicks
+        totalBytes
+        [_cc, _module, _src, _, _, _indTime, _indAlloc, _inhTime, _inhAlloc] =
+        let readTrace =
+              (\cc modul src indTime indAllc
+               -> let ticks = round $ indTime * (fromIntegral totalTicks / 100)
+                      alloc = round $ indAllc * (fromIntegral totalBytes / 100)
+                  in Trace { cc, modul, src, ticks, alloc })
+              <$> readCostCentre _cc
+              <*> readText _module
+              <*> readSrc _src
+              <*> readDouble _indTime
+              <*> readDouble _indAlloc
+            readInherited =
+              Inherited <$> readDouble _inhTime <*> readDouble _inhAlloc
+        in liftA2 (,) readTrace readInherited
+      format _ _ _ = Left
+        "unexpected number of columns. Is the input file in the correct format (-p)? Did you use the '-p' option?"
+
+      printError what line = "confused at line "
+        ++ show line
+        ++ " when trying to parse '"
+        ++ what
+        ++ "': "
+
+skipToMain :: [NumberedLine] -> MayFail [NumberedLine]
+skipToMain = fmap skipEmpty
+  . maybeToEither (eofError "can't find the header")
+  . (tailMay . skipToCostCentreHeader >=> tailMay . skipToCostCentreHeader)
+  where
+    startsWithCostCentre = ("COST CENTRE" `Char8.isPrefixOf`) . snd
+
+    skipToCostCentreHeader = dropWhile (not . startsWithCostCentre)
+
+    skipEmpty = dropWhile (Char8.null . snd)
+
+skipToTotalTime :: [NumberedLine] -> MayFail (NonEmpty NumberedLine)
+skipToTotalTime = maybeToEither (eofError "can't find the total time line")
+  . nonEmpty
+  . dropWhile (not . startsWithTotalTime)
+  where
+    startsWithTotalTime = ("total time" `Char8.isPrefixOf`) . trimLeft . snd
+
+eofError :: String -> String
+eofError why = "unexpected end of file: "
+  ++ why
+  ++ " \n(This usually means that the file is malformed. If you're sure that the file is correct then you found a bug)"
+
+readTotalTicks :: ByteString -> MayFail Integer
+readTotalTicks = readInteger . Char8.drop 1 . trim . atOpeningParen
+  where
+    atOpeningParen = Char8.dropWhile (/= '(')
+
+readTotalBytes :: ByteString -> MayFail Integer
+readTotalBytes = readGroupedDecimal . trim . Char8.drop 2 . atEqualSign
+  where
+    atEqualSign = Char8.dropWhile (/= '=')
+
+    readGroupedDecimal = go 0
+      where
+        go r bs = case Char8.readInteger bs of
+          Just (i, bs')
+            -> let j = r * 1000 + i
+               in case Char8.uncons bs' of
+                    Just (',', bs'') -> go j bs''
+                    Just (ch, _)
+                      -> Left $ "unexpected '" ++ ch:"' when looking for ','"
+                    Nothing          -> Right j
+          Nothing
+            -> Left $ "expected integer but found '" ++ Char8.unpack bs ++ "' "
+
+trimLeft :: ByteString -> ByteString
+trimLeft = Char8.dropWhile isSpace
+
+trim :: ByteString -> ByteString
+trim = Char8.takeWhile (not . isSpace)
+
+
+
diff --git a/src/StackCollapse.hs b/src/StackCollapse.hs
new file mode 100644
--- /dev/null
+++ b/src/StackCollapse.hs
@@ -0,0 +1,159 @@
+{-  stackcollapse-ghc - fold GHC prof files into flamegraph input
+    Copyright (C) 2020 Marcin Rzeźnicki
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+-}
+{-# LANGUAGE NamedFieldPuns #-}
+{-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE ExistentialQuantification #-}
+
+module StackCollapse
+    ( MayFail
+    , StackCollapse(..)
+    , collapseStack
+    , stackCollapseFromPath
+    , stackCollapseFromConfig) where
+
+import           Trace
+import           Config
+import           UserModule
+import           Orphans
+import           Profiles
+import           CallTree (CallForest)
+import           Data.ByteString.Builder
+import qualified Data.ByteString as ByteString
+import qualified Data.ByteString.Lazy as Lazy
+import           Data.Bool
+import           Data.Text.Encoding (encodeUtf8Builder)
+import           Data.List (intersperse)
+import           Data.Functor.Foldable
+import           Data.Functor ((<&>))
+import           Control.Applicative (liftA2, liftA3)
+
+data StackCollapse = forall p. Profile p
+  => StackCollapse { profile :: p
+                   , builder :: Trace -> Builder
+                   , mode :: OperationMode
+                   }
+
+collapseStack :: StackCollapse -> MayFail Lazy.ByteString
+collapseStack StackCollapse { profile, builder, mode } =
+  buildCallForest mode profile
+  <&> collapseCallForest (collectSamples mode) builder
+  where
+    collectSamples Time = ticks
+    collectSamples Alloc = alloc
+
+stackCollapseFromConfig
+  :: StackCollapseConfig -> ByteString.ByteString -> StackCollapse
+stackCollapseFromConfig config input =
+  let builder = frameBuilder config
+      mode = operationMode config
+  in case inputType config of
+       Standard
+         -> StackCollapse { profile = ProfileStandard input, builder, mode }
+       Detailed
+         -> StackCollapse { profile = ProfileDetailed input, builder, mode }
+
+stackCollapseFromPath :: StackCollapseConfig -> FilePath -> IO StackCollapse
+stackCollapseFromPath config = fmap (stackCollapseFromConfig config)
+  . ByteString.readFile
+
+collapseCallForest
+  :: (Trace -> Integer) -> (Trace -> Builder) -> CallForest -> Lazy.ByteString
+collapseCallForest collectSamples buildFrame = toLazyByteString
+  . mconcat
+  . intersperse (char7 '\n')
+  . concatMap catamorphism
+  where
+    catamorphism = cata $ collapseCallTraces collectSamples buildFrame
+
+collapseCallTraces :: (Trace -> Integer)
+                   -> (Trace -> Builder)
+                   -> TreeF Trace [Builder]
+                   -> [Builder]
+collapseCallTraces collectSamples buildFrame (NodeF trace stacks)
+  | collectedSamples == 0 = stacks'
+  | otherwise = frameWithCount:stacks'
+  where
+    collectedSamples = collectSamples trace
+
+    frame = buildFrame trace
+
+    stacks' = concatMap (map $ withSep ';' frame) stacks
+
+    frameWithCount = withSep ' ' frame $ integerDec collectedSamples
+
+frameBuilder :: StackCollapseConfig -> Trace -> Builder
+frameBuilder config =
+  let optSource =
+        let builder = (char7 ' ' <>) . bracket . encodeUtf8Builder . source
+        in case sourceMode config of
+             SourceNever  -> const mempty
+             SourceAlways -> builder <?> liftA2 (&&) hasLocation (not . isCAF)
+             SourceUser   -> builder
+               <?> liftA3
+                 (\a b c -> a && b && c)
+                 hasLocation
+                 (not . isCAF)
+                 (isUserTrace config)
+      optModule = let builder = (<> char7 '.') . encodeUtf8Builder . modul
+                  in case functionNameMode config of
+                       QualifiedNever  -> const mempty
+                       QualifiedAlways -> builder <?> not . isMain
+                       QualifiedKernel -> builder
+                         <?> not . liftA2 (||) isMain (isUserTrace config)
+      optAnnot = case annotationMode config of
+        WithAnnotations -> annot
+        NoAnnotations   -> const mempty
+      annot trace
+        | isCAF trace = annotate "i"
+        | isKernelTrace trace = annotate "k"
+        | isUserTrace config trace = annotate "j"
+        | otherwise = mempty
+  in optModule <> (encodeUtf8Builder . costCentre) <> optSource <> optAnnot
+
+isUserTrace :: StackCollapseConfig -> Trace -> Bool
+isUserTrace = inAnyUserModule . userModules
+
+isKernelTrace :: Trace -> Bool
+isKernelTrace = inAnyModule kernelModules
+  where
+    kernelModules =
+      [ "GHC"
+      , "Data.Tuple"
+      , "Data.Bits"
+      , "Control.Monad"
+      , "Data.HashTable"
+      , "Data.Typeable"
+      , "Foreign"
+      , "Numeric"
+      , "System"
+      , "Text"
+      , "Type"
+      , "Unsafe"]
+
+withSep :: Char -> Builder -> Builder -> Builder
+withSep sep left right = left <> char7 sep <> right
+
+bracket :: Builder -> Builder
+bracket b = char7 '[' <> b <> char7 ']'
+
+annotate :: Builder -> Builder
+annotate = (char7 '_' <>) . bracket
+
+(<?>) :: (Monoid b) => (a -> b) -> (a -> Bool) -> a -> b
+then' <?> if' = \a -> bool mempty (then' a) (if' a)
+
+infixl 7 <?>
diff --git a/src/Trace.hs b/src/Trace.hs
new file mode 100644
--- /dev/null
+++ b/src/Trace.hs
@@ -0,0 +1,80 @@
+{-  stackcollapse-ghc - fold GHC prof files into flamegraph input
+    Copyright (C) 2020 Marcin Rzeźnicki
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+-}
+{-# LANGUAGE NamedFieldPuns #-}
+{-# LANGUAGE OverloadedStrings #-}
+
+module Trace
+    ( Trace(..)
+    , CostCentre(..)
+    , Src(..)
+    , hasLocation
+    , isMain
+    , isCAF
+    , costCentre
+    , source
+    , inAnyModule) where
+
+import           Data.Text (Text)
+import qualified Data.Text as T
+
+data Trace = Trace { cc :: CostCentre
+                   , modul :: Text
+                   , src :: Src
+                   , ticks :: Integer
+                   , alloc :: Integer
+                   }
+
+data CostCentre = Main
+                | CAF (Maybe Text)
+                | SCC Text
+
+data Src = BuiltIn
+         | EntireModule
+         | NoLocationInfo
+         | Location Text
+
+hasLocation :: Trace -> Bool
+hasLocation Trace { src = (Location _) } = True
+hasLocation _ = False
+
+isMain :: Trace -> Bool
+isMain Trace { cc = Main } = True
+isMain _ = False
+
+isCAF :: Trace -> Bool
+isCAF Trace { cc = (CAF _) } = True
+isCAF _ = False
+
+costCentre :: Trace -> Text
+costCentre trace = case cc trace of
+  Main -> "MAIN"
+  CAF Nothing -> "CAF"
+  CAF (Just text) -> text
+  SCC text -> text
+
+source :: Trace -> Text
+source trace = case src trace of
+  BuiltIn        -> "<built-in>"
+  EntireModule   -> "<entire-module>"
+  NoLocationInfo -> "<no location info>"
+  Location l     -> l
+
+inAnyModule :: [Text] -> Trace -> Bool
+inAnyModule modules Trace { modul } = any
+  (maybe False (\suffix -> T.null suffix || T.head suffix == '.')
+   . flip T.stripPrefix modul)
+  modules
diff --git a/src/UserModule.hs b/src/UserModule.hs
new file mode 100644
--- /dev/null
+++ b/src/UserModule.hs
@@ -0,0 +1,59 @@
+{-  stackcollapse-ghc - fold GHC prof files into flamegraph input
+    Copyright (C) 2020 Marcin Rzeźnicki
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+-}
+{-# LANGUAGE DerivingStrategies #-}
+
+module UserModule
+    ( UserModule
+    , parseUserModule
+    , userModule_Main
+    , inAnyUserModule
+    , toString) where
+
+import           Trace
+import           Data.Text (Text)
+import qualified Data.Text as T
+import           Data.Char (isDigit, isLetter, isUpper)
+import           Data.Maybe (listToMaybe)
+import           Data.Coerce
+
+newtype UserModule = UserModule Text
+  deriving stock (Eq)
+
+parseUserModule :: String -> Either String UserModule
+parseUserModule string
+  | not allLettersOrDigitsOrDotOr' =
+    Left "Module name must consist of letter | digit | . | ' only"
+  | not startsWithUpper = Left "Module name must start with uppercase letter"
+  | endsWithDot = Left "Do not end module name with '.'"
+  | otherwise = Right $ UserModule $ T.pack string
+  where
+    allLettersOrDigitsOrDotOr' =
+      all (\c -> isLetter c || isDigit c || c == '\'' || c == '.') string
+
+    startsWithUpper = maybe False isUpper $ listToMaybe string
+
+    endsWithDot = last string == '.'
+
+userModule_Main :: UserModule
+userModule_Main = UserModule $ T.pack "Main"
+
+inAnyUserModule :: [UserModule] -> Trace -> Bool
+inAnyUserModule = inAnyModule . coerce
+
+toString :: UserModule -> String
+toString (UserModule t) = T.unpack t
+
diff --git a/stackcollapse-ghc.cabal b/stackcollapse-ghc.cabal
new file mode 100644
--- /dev/null
+++ b/stackcollapse-ghc.cabal
@@ -0,0 +1,131 @@
+cabal-version:       2.4
+name:                stackcollapse-ghc
+version:             0.0.1
+synopsis:            Program to fold GHC prof files into flamegraph input
+description:         Program to fold GHC prof files into flamegraph input
+
+                     The reasons why this package exists despite other packages with similar functionality (not including the NIH syndrome) boil down to:
+                     .
+                     * it does only one thing (stack collapsing), so it's up to the user to install flamegraph scripts, pass options etc (in my eyes it's not a limitation, on the contrary),
+                     .
+                     * output control: annotations (color profiles), extending traces from a configured set of modules with the source locations or toggling qualified names,
+                     .
+                     * precise ticks and/or bytes with @-p@ reports,
+                     .
+                     * it's fast
+                     
+                     .
+                     = Basic usage
+                     .
+                     == Visualize ticks
+                     .
+
+                     If you have a detailed prof file (@-P@ RTS option)
+                     .
+                     > stackcollapse-ghc prof_file | flamegraph.pl --title 'Example' --subtitle 'Time' --countname ticks > path_to_svg
+                     .
+
+                     If you have a standard prof file (@-p@ RTS option)
+                     .
+                     > stackcollapse-ghc -p prof_file | flamegraph.pl --title 'Example' --subtitle 'Time' --countname ticks > path_to_svg
+                     .
+
+                     . 
+                     == Visualize allocations
+                     . 
+                     If you have a detailed prof file (@-P@ RTS option)
+                     .
+                     > stackcollapse-ghc --alloc prof_file | flamegraph.pl --title 'Example' --subtitle 'Bytes allocated' --countname bytes > path_to_svg
+                     .
+
+                     If you have a standard prof file (@-p@ RTS option)
+                     .
+                     > stackcollapse-ghc --alloc -p prof_file | flamegraph.pl --title 'Example' --subtitle 'Bytes allocated' --countname bytes > path_to_svg
+                     .
+
+                     See the full [README](https://github.com/marcin-rzeznicki/stackcollapse-ghc) for details.
+homepage:            https://github.com/marcin-rzeznicki/stackcollapse-ghc
+bug-reports:         https://github.com/marcin-rzeznicki/stackcollapse-ghc/issues
+license:             GPL-3.0-only
+license-file:        LICENSE
+author:              Marcin Rzeźnicki
+maintainer:          Marcin Rzeźnicki <marcin.rzeznicki@gmail.com>
+copyright:           2020 Marcin Rzeźnicki
+category:            Profiling
+build-type:          Simple
+extra-source-files:  test/prof_files/*.prof
+extra-doc-files:     README.md
+                     CHANGELOG.md
+tested-with:         GHC == 8.6.5
+                     GHC == 8.8.2
+                     GHC == 8.8.3
+
+source-repository head
+  type:                git
+  location:            https://github.com/marcin-rzeznicki/stackcollapse-ghc.git
+
+common common-options
+  build-depends:       base >= 4.12.0.0 && < 4.14,
+                       bytestring >= 0.10.8
+  
+  ghc-options:         -Wall
+                       -Wcompat
+                       -Widentities
+                       -Wincomplete-uni-patterns
+                       -Wincomplete-record-updates
+                       -fdefer-typed-holes
+  if impl(ghc >= 8.0)
+    ghc-options:       -Wredundant-constraints
+  if impl(ghc >= 8.2)
+    ghc-options:       -fhide-source-paths
+  if impl(ghc >= 8.4)
+    ghc-options:       -Wmissing-export-lists
+                       -Wpartial-fields
+  if impl(ghc >= 8.8)
+    ghc-options:       -Wmissing-deriving-strategies
+
+  default-language:    Haskell2010
+
+common common-sources
+  hs-source-dirs:      src
+  other-modules:       Config
+                       UserModule
+                       Trace
+                       Format
+                       CallTree
+                       CallTreeBuilder
+                       Orphans
+                       Profiles
+                       StackCollapse
+  build-depends:       text >= 1.2.3.0,
+                       containers >= 0.6.0.1,
+                       rosezipper ==0.2,
+                       foldl ==1.4.6,
+                       transformers ==0.5.6.*,
+                       recursion-schemes ==5.1.3,
+                       safe ==0.3.*,
+                       extra
+
+executable stackcollapse-ghc
+  import:              common-options,
+                       common-sources
+  hs-source-dirs:      app
+  main-is:             Main.hs
+  ghc-options:         -threaded
+                       -O2
+                       -rtsopts
+                       -with-rtsopts=-N
+
+test-suite stackcollapse-ghc-test
+  import:              common-options,
+                       common-sources
+  type:                exitcode-stdio-1.0
+  hs-source-dirs:      test
+  main-is:             Spec.hs
+  other-modules:       Helpers
+  build-depends:       hspec-golden ==0.1.0.1,
+                       hspec,
+                       utf8-string ^>=1.0.1
+  ghc-options:         -threaded
+                       -rtsopts
+                       -with-rtsopts=-N
diff --git a/test/Helpers.hs b/test/Helpers.hs
new file mode 100644
--- /dev/null
+++ b/test/Helpers.hs
@@ -0,0 +1,82 @@
+{-# LANGUAGE NamedFieldPuns #-}
+
+module Helpers (embedInFileName, toArgsString, userModuleFromString) where
+
+import           Config
+import           UserModule (UserModule, userModule_Main)
+import qualified UserModule
+import           Data.Either.Extra (fromRight')
+
+embedInFileName :: StackCollapseConfig -> String
+embedInFileName
+  Config { operationMode
+         , sourceMode
+         , functionNameMode
+         , annotationMode
+         , userModules
+         , inputType
+         } = embedInputType inputType
+  ++ embedOperationMode operationMode
+  ++ embedSourceMode sourceMode
+  ++ embedFunctionNameMode functionNameMode
+  ++ embedAnnotationMode annotationMode
+  ++ embedUserModules userModules
+  where
+    embedInputType Standard = "-p"
+    embedInputType Detailed = ""
+
+    embedUserModules = concatMap (('+':) . UserModule.toString)
+      . filter (/= userModule_Main)
+
+    embedOperationMode Time = "--time"
+    embedOperationMode Alloc = "--alloc"
+
+    embedSourceMode SourceAlways = "--source-always"
+    embedSourceMode SourceUser = "--source-user"
+    embedSourceMode SourceNever = ""
+
+    embedFunctionNameMode QualifiedAlways = "--qualified"
+    embedFunctionNameMode QualifiedKernel = ""
+    embedFunctionNameMode QualifiedNever = "--no-qualified"
+
+    embedAnnotationMode WithAnnotations = ""
+    embedAnnotationMode NoAnnotations = "--no-annot"
+
+toArgsString :: StackCollapseConfig -> String
+toArgsString
+  Config { operationMode
+         , sourceMode
+         , functionNameMode
+         , annotationMode
+         , userModules
+         , inputType
+         } = unwords
+  $ [ toArgs_Op operationMode
+    , toArgs_Source sourceMode
+    , toArgs_FunctionName functionNameMode
+    , toArgs_Annot annotationMode
+    , toArgs_Input inputType]
+  ++ toArgs_userModules userModules
+  where
+    toArgs_userModules = map (("-u " ++) . UserModule.toString)
+      . filter (/= userModule_Main)
+
+    toArgs_Op Time = "--time"
+    toArgs_Op Alloc = "--alloc"
+
+    toArgs_Source SourceAlways = "-S"
+    toArgs_Source SourceUser = "-s"
+    toArgs_Source SourceNever = "--no-source"
+
+    toArgs_FunctionName QualifiedAlways = "-Q"
+    toArgs_FunctionName QualifiedKernel = "-q"
+    toArgs_FunctionName QualifiedNever = "--no-qualified"
+
+    toArgs_Annot WithAnnotations = "-A"
+    toArgs_Annot NoAnnotations = "--no-annot"
+
+    toArgs_Input Standard = "-p"
+    toArgs_Input Detailed = "-P"
+
+userModuleFromString :: String -> UserModule
+userModuleFromString = fromRight' . UserModule.parseUserModule
diff --git a/test/Spec.hs b/test/Spec.hs
new file mode 100644
--- /dev/null
+++ b/test/Spec.hs
@@ -0,0 +1,105 @@
+{-# LANGUAGE NamedFieldPuns #-}
+
+module Main (main) where
+
+import           Helpers
+import           Config
+import           StackCollapse
+import           Test.Hspec
+import           Test.Hspec.Golden
+import qualified Data.ByteString.Lazy as Lazy
+import           Data.ByteString.Lazy.Char8 (pack)
+import           Data.ByteString.Lazy.UTF8 (toString)
+import           Data.Either.Extra (fromEither)
+import           Control.Arrow (left)
+
+path_ProfFilesDir :: String
+path_ProfFilesDir = "test/prof_files/"
+
+path_GoldenDir :: String
+path_GoldenDir = "test/.golden"
+
+path_ProfFile :: String -> FilePath
+path_ProfFile stem = path_ProfFilesDir ++ stem ++ ".prof"
+
+main :: IO ()
+main = hspec
+  $ do
+    context "detailed prof"
+      $ withConfigs
+        "semiprimes"
+        [ defaultConfig
+        , defaultConfig `prependUserModule` userModuleFromString "Example"
+        , defaultConfig { sourceMode = SourceUser }
+            `prependUserModule` userModuleFromString "Example"
+        , defaultConfig { functionNameMode = QualifiedNever }
+            `prependUserModule` userModuleFromString "Example"
+        , defaultConfig { operationMode = Alloc }
+            `prependUserModule` userModuleFromString "Example"]
+    context "standard prof"
+      $ withConfigs
+        "countSemiprimes"
+        [ defaultConfig { inputType = Standard }
+            `prependUserModule` userModuleFromString "Example"
+        , defaultConfig { inputType = Standard, operationMode = Alloc }
+            `prependUserModule` userModuleFromString "Example"]
+    context "unicode chars"
+      $ withConfigs
+        "unicode"
+        [ defaultConfig { inputType = Standard
+                        , functionNameMode = QualifiedNever
+                        }
+        , defaultConfig { inputType = Standard
+                        , operationMode = Alloc
+                        , sourceMode = SourceAlways
+                        }]
+    context "no header" $ stackCollapseTest "no-header" defaultConfig
+    context "just totals" $ stackCollapseTest "no-data" defaultConfig
+    context "no totals"
+      $ stackCollapseTest "no-totals"
+      $ defaultConfig { inputType = Standard }
+    context "malformed total bytes"
+      $ stackCollapseTest "malformed-bytes"
+      $ defaultConfig { inputType = Standard }
+    context "malformed ticks"
+      $ stackCollapseTest "no-ticks"
+      $ defaultConfig { inputType = Standard }
+    context "data errors"
+      $ withConfigs
+        "errors"
+        [defaultConfig, defaultConfig { operationMode = Alloc }]
+    context "wrong input type (-P given but the file is -p)"
+      $ stackCollapseTest "countSemiprimes" defaultConfig
+    context "wrong input type (-p given but the file is -P)"
+      $ stackCollapseTest "semiprimes"
+      $ defaultConfig { inputType = Standard }
+
+withConfigs :: String -> [StackCollapseConfig] -> Spec
+withConfigs fileStem = mapM_ (stackCollapseTest fileStem)
+
+stackCollapseTest :: String -> StackCollapseConfig -> Spec
+stackCollapseTest fileStem opts = before (prepareTest fileStem opts)
+  $ specify (toArgsString opts) runAndCompareStackCollapse
+  where
+    runAndCompareStackCollapse =
+      compareWithGold fileStem opts . fromEither . left pack . collapseStack
+
+compareWithGold
+  :: String -> StackCollapseConfig -> Lazy.ByteString -> Golden Lazy.ByteString
+compareWithGold stem opts bs =
+  Golden { output = bs
+         , encodePretty = toString
+         , writeToFile = Lazy.writeFile
+         , readFromFile = Lazy.readFile
+         , directory = path_GoldenDir
+         , testName
+         }
+  where
+    testName = stem ++ embedInFileName opts
+
+prepareTest :: String -> StackCollapseConfig -> IO StackCollapse
+prepareTest stem opts = let profFilePath = path_ProfFile stem
+                        in stackCollapseFromPath opts profFilePath
+
+
+
diff --git a/test/prof_files/countSemiprimes.prof b/test/prof_files/countSemiprimes.prof
new file mode 100644
--- /dev/null
+++ b/test/prof_files/countSemiprimes.prof
@@ -0,0 +1,219 @@
+	Sun May 24 19:22 2020 Time and Allocation Profiling Report  (Final)
+
+	   prog-exe +RTS -i0.001 -ki64k -pocountSemiprimes -s -p -RTS countSemiprimes
+
+	total time  =        0.30 secs   (301 ticks @ 1000 us, 1 processor)
+	total alloc = 504,592,280 bytes  (excludes profiling overheads)
+
+COST CENTRE                    MODULE                        SRC                                        %time %alloc
+
+unionBy.loop                   Data.List.Ordered             Data/List/Ordered.hs:(237,6)-(243,34)       71.4   91.9
+union                          Data.List.Ordered             Data/List/Ordered.hs:231:1-23               22.3    0.0
+countSemiprimes.noOfSemiprimes Example                       src/Example.hs:(15,5)-(17,22)                1.7    1.3
+basicUnsafeWrite               Data.Vector.Primitive.Mutable Data/Vector/Primitive/Mutable.hs:124:3-69    1.3    0.5
+>>=                            Data.Vector.Fusion.Util       Data/Vector/Fusion/Util.hs:36:3-18           0.3    1.7
+
+
+                                                                                                                                                   individual      inherited
+COST CENTRE                            MODULE                            SRC                                                   no.      entries  %time %alloc   %time %alloc
+
+MAIN                                   MAIN                              <built-in>                                            1433          0    0.0    0.0   100.0  100.0
+ CAF                                   GHC.Conc.Signal                   <entire-module>                                       1547          0    0.0    0.0     0.0    0.0
+ CAF                                   GHC.IO.Encoding                   <entire-module>                                       1531          0    0.0    0.0     0.0    0.0
+ CAF                                   GHC.IO.Encoding.Iconv             <entire-module>                                       1529          0    0.0    0.0     0.0    0.0
+ CAF                                   GHC.IO.Handle.FD                  <entire-module>                                       1521          0    0.0    0.0     0.0    0.0
+ CAF                                   GHC.Event.Thread                  <entire-module>                                       1481          0    0.0    0.0     0.0    0.0
+ CAF                                   GHC.Event.Poll                    <entire-module>                                       1451          0    0.0    0.0     0.0    0.0
+ CAF:$fApplicativeBox_$cpure           Data.Vector.Fusion.Util           Data/Vector/Fusion/Util.hs:45:3-6                     2783          0    0.0    0.0     0.0    0.0
+  pure                                 Data.Vector.Fusion.Util           Data/Vector/Fusion/Util.hs:45:3-12                    3039          1    0.0    0.0     0.0    0.0
+ CAF:$fApplicativeId4                  Data.Vector.Fusion.Util           <no location info>                                    2780          0    0.0    0.0     0.0    0.0
+  pure                                 Data.Vector.Fusion.Util           Data/Vector/Fusion/Util.hs:31:3-11                    3023          1    0.0    0.0     0.0    0.0
+ CAF:$fMonadBox_$creturn               Data.Vector.Fusion.Util           Data/Vector/Fusion/Util.hs:49:3-8                     2784          0    0.0    0.0     0.0    0.0
+  return                               Data.Vector.Fusion.Util           Data/Vector/Fusion/Util.hs:49:3-15                    3038          1    0.0    0.0     0.0    0.0
+ CAF:$fMonadId1                        Data.Vector.Fusion.Util           <no location info>                                    2782          0    0.0    0.0     0.0    0.0
+  return                               Data.Vector.Fusion.Util           Data/Vector/Fusion/Util.hs:35:3-15                    3022          1    0.0    0.0     0.0    0.0
+ CAF:$fPrimMonadST1_r5gX               Control.Monad.Primitive           <no location info>                                    2209          0    0.0    0.0     0.0    0.0
+  primitive                            Control.Monad.Primitive           Control/Monad/Primitive.hs:205:3-16                   3029          1    0.0    0.0     0.0    0.0
+ CAF:doBoundsChecks                    Data.Vector.Internal.Check        Data/Vector/Internal/Check.hs:55:1-14                 2785          0    0.0    0.0     0.0    0.0
+  doBoundsChecks                       Data.Vector.Internal.Check        Data/Vector/Internal/Check.hs:55:1-21                 2883          1    0.0    0.0     0.0    0.0
+ CAF:doInternalChecks                  Data.Vector.Internal.Check        Data/Vector/Internal/Check.hs:71:1-16                 2787          0    0.0    0.0     0.0    0.0
+  doInternalChecks                     Data.Vector.Internal.Check        Data/Vector/Internal/Check.hs:71:1-24                 3009          1    0.0    0.0     0.0    0.0
+ CAF:doUnsafeChecks                    Data.Vector.Internal.Check        Data/Vector/Internal/Check.hs:64:1-14                 2786          0    0.0    0.0     0.0    0.0
+  doUnsafeChecks                       Data.Vector.Internal.Check        Data/Vector/Internal/Check.hs:64:1-22                 2887          1    0.0    0.0     0.0    0.0
+ CAF:empty                             Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:131:1-5                 1596          0    0.0    0.0     0.0    0.0
+  empty                                Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:131:1-13                2961          1    0.0    0.0     0.0    0.0
+ CAF:findMin                           Data.PQueue.Prio.Min              Data/PQueue/Prio/Min.hs:189:1-7                       1628          0    0.0    0.0     0.0    0.0
+  findMin                              Data.PQueue.Prio.Min              Data/PQueue/Prio/Min.hs:189:1-78                      2955          1    0.0    0.0     0.0    0.0
+ CAF:lvl60_rful                        Example                           <no location info>                                    2820          0    0.0    0.0     0.0    0.0
+  countSemiprimes                      Example                           src/Example.hs:(12,1)-(17,22)                         2891          0    0.0    0.0     0.0    0.0
+   countSemiprimes.noOfSemiprimes      Example                           src/Example.hs:(15,5)-(17,22)                         2892          0    0.0    0.0     0.0    0.0
+    isNSemiprime                       Example                           src/Example.hs:(20,1)-(25,25)                         2893          0    0.0    0.0     0.0    0.0
+     basicUnsafeNew                    Data.Vector.Unboxed.Base          Data/Vector/Unboxed/Base.hs:354:3-55                  2894          0    0.0    0.0     0.0    0.0
+      basicUnsafeNew                   Data.Vector.Primitive.Mutable     Data/Vector/Primitive/Mutable.hs:(105,3)-(111,37)     2895          0    0.0    0.0     0.0    0.0
+       basicUnsafeNew.mx               Data.Vector.Primitive.Mutable     Data/Vector/Primitive/Mutable.hs:111:7-37             2896          0    0.0    0.0     0.0    0.0
+ CAF:main1                             Main                              <no location info>                                    2864          0    0.0    0.0     0.0    0.0
+  main                                 Main                              app/Main.hs:10:1-22                                   2866          1    0.0    0.0     0.0    0.0
+ CAF:nextComposite_rfu0                Example                           src/Example.hs:45:5-17                                2811          0    0.0    0.0     0.0    0.0
+  primes                               Example                           src/Example.hs:(61,1)-(117,55)                        2950          0    0.0    0.0     0.0    0.0
+   primes.large                        Example                           src/Example.hs:65:5-37                                2951          0    0.0    0.0     0.0    0.0
+    sieve                              Example                           src/Example.hs:(40,1)-(58,53)                         2952          0    0.0    0.0     0.0    0.0
+     sieve.nextComposite               Example                           src/Example.hs:45:5-36                                2953          1    0.0    0.0     0.0    0.0
+ CAF:primesTo10                        Example                           <no location info>                                    2810          0    0.0    0.0     0.0    0.1
+  primes                               Example                           src/Example.hs:(61,1)-(117,55)                        2942          0    0.0    0.0     0.0    0.1
+   primes.large                        Example                           src/Example.hs:65:5-37                                2943          0    0.0    0.0     0.0    0.1
+    primes.spin                        Example                           src/Example.hs:117:5-55                               2944       5717    0.0    0.1     0.0    0.1
+ CAF:primesTo8                         Example                           <no location info>                                    2814          0    0.0    0.0     1.0    1.9
+  primes                               Example                           src/Example.hs:(61,1)-(117,55)                        2939          0    0.0    0.0     1.0    1.9
+   primes.large                        Example                           src/Example.hs:65:5-37                                2940          0    0.0    0.0     1.0    1.9
+    sieve                              Example                           src/Example.hs:(40,1)-(58,53)                         2941          1    0.0    0.0     1.0    1.9
+     sieve.sieve'                      Example                           src/Example.hs:(49,5)-(52,46)                         2945       5716    0.0    0.1     1.0    1.9
+      sieve.adjust                     Example                           src/Example.hs:(54,5)-(58,53)                         2966       6524    0.3    0.0     0.7    1.5
+       sieve.adjust.(...)              Example                           src/Example.hs:58:9-53                                2968       6524    0.0    0.0     0.3    1.3
+        deleteFindMin                  Data.PQueue.Prio.Min              Data/PQueue/Prio/Min.hs:198:1-98                      2969       6524    0.0    0.0     0.3    1.3
+         minViewWithKey                Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:(209,1)-(210,70)        2970       6524    0.0    0.0     0.3    1.3
+          extractHeap                  Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:(312,1)-(314,48)        2975       3566    0.0    0.0     0.3    1.3
+           extractForest               Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:(354,1)-(363,27)        2976      42471    0.3    0.7     0.3    1.2
+            incrExtract                Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:(345,1)-(348,54)        2986      31818    0.0    0.1     0.0    0.5
+             incr                      Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:(297,1)-(300,50)        2991      23574    0.0    0.4     0.0    0.4
+              meld                     Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:(269,1)-(271,46)        2992      11640    0.0    0.0     0.0    0.0
+             meld                      Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:(269,1)-(271,46)        2990      11934    0.0    0.0     0.0    0.0
+            extractForest.<?           Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:363:5-27                2985      16714    0.0    0.0     0.0    0.0
+       sieve.adjust.n                  Example                           src/Example.hs:58:9-53                                2967       6524    0.0    0.0     0.0    0.0
+       sieve.adjust.facts              Example                           src/Example.hs:58:9-53                                2987       3566    0.0    0.0     0.0    0.0
+       sieve.adjust.table'             Example                           src/Example.hs:58:9-53                                2974       3566    0.0    0.0     0.0    0.0
+       sieve.reinsert                  Example                           src/Example.hs:47:5-56                                2971       3566    0.0    0.0     0.0    0.2
+        insert                         Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:150:1-21                2972       3566    0.0    0.1     0.0    0.2
+         insert'                       Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:(169,1)-(172,59)        2973       3566    0.0    0.0     0.0    0.1
+          incr                         Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:(297,1)-(300,50)        2989       7104    0.0    0.1     0.0    0.1
+           meld                        Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:(269,1)-(271,46)        2993       3539    0.0    0.0     0.0    0.0
+          tip                          Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:265:1-28                2988       3565    0.0    0.0     0.0    0.0
+      sieve.crossoff                   Example                           src/Example.hs:43:5-68                                2963       2757    0.0    0.1     0.3    0.3
+       insert                          Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:150:1-21                2964       2757    0.3    0.0     0.3    0.1
+        insert'                        Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:(169,1)-(172,59)        2965       2757    0.0    0.0     0.0    0.1
+         incr                          Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:(297,1)-(300,50)        2978       5508    0.0    0.1     0.0    0.1
+          meld                         Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:(269,1)-(271,46)        2979       2751    0.0    0.0     0.0    0.0
+         tip                           Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:265:1-28                2977       2757    0.0    0.0     0.0    0.0
+     sieve.crossoff                    Example                           src/Example.hs:43:5-68                                2958          1    0.0    0.0     0.0    0.0
+      insert                           Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:150:1-21                2959          1    0.0    0.0     0.0    0.0
+       insert'                         Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:(169,1)-(172,59)        2960          1    0.0    0.0     0.0    0.0
+        singleton                      Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:145:1-31                2962          1    0.0    0.0     0.0    0.0
+     sieve.nextComposite               Example                           src/Example.hs:45:5-36                                2954          0    0.0    0.0     0.0    0.0
+      findMin                          Data.PQueue.Prio.Min              Data/PQueue/Prio/Min.hs:189:1-78                      2956          0    0.0    0.0     0.0    0.0
+       getMin                          Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:(190,1)-(191,32)        2957       5716    0.0    0.0     0.0    0.0
+ CAF:primesTo_$sprimes                 Example                           src/Example.hs:61:1-6                                 2815          0    0.0    0.0     0.0    0.0
+  primes                               Example                           src/Example.hs:(61,1)-(117,55)                        2922          1    0.0    0.0     0.0    0.0
+   primes.large                        Example                           src/Example.hs:65:5-37                                2938          1    0.0    0.0     0.0    0.0
+   primes.small                        Example                           src/Example.hs:63:5-24                                2923          1    0.0    0.0     0.0    0.0
+ CAF:primesTo_wheel2357                Example                           src/Example.hs:67:5-13                                2809          0    0.0    0.0     0.0    0.0
+  primes                               Example                           src/Example.hs:(61,1)-(117,55)                        2946          0    0.0    0.0     0.0    0.0
+   primes.wheel2357                    Example                           src/Example.hs:(67,5)-(115,11)                        2947          1    0.0    0.0     0.0    0.0
+ CAF:primesTo_xs'                      Example                           <no location info>                                    2808          0    0.0    0.0     0.0    0.0
+  primes                               Example                           src/Example.hs:(61,1)-(117,55)                        2948          0    0.0    0.0     0.0    0.0
+   primes.wheel2357                    Example                           src/Example.hs:(67,5)-(115,11)                        2949          0    0.0    0.0     0.0    0.0
+ CAF:run1                              Main                              <no location info>                                    2861          0    0.0    0.0     0.0    0.0
+  run                                  Main                              app/Main.hs:(13,1)-(24,17)                            2869          0    0.0    0.0     0.0    0.0
+   profile                             Main                              app/Main.hs:27:1-65                                   2870          1    0.0    0.0     0.0    0.0
+ CAF:run2                              Main                              <no location info>                                    2860          0    0.0    0.0     0.0    0.0
+  run                                  Main                              app/Main.hs:(13,1)-(24,17)                            2872          0    0.0    0.0     0.0    0.0
+   profile                             Main                              app/Main.hs:27:1-65                                   2873          0    0.0    0.0     0.0    0.0
+ CAF:run32                             Main                              <no location info>                                    2858          0    0.0    0.0     5.3    5.4
+  run                                  Main                              app/Main.hs:(13,1)-(24,17)                            2877          0    0.0    0.0     5.3    5.4
+   countSemiprimes                     Example                           src/Example.hs:(12,1)-(17,22)                         2880          1    0.0    0.0     5.3    5.4
+    countSemiprimes.noOfSemiprimes     Example                           src/Example.hs:(15,5)-(17,22)                         2885          1    1.7    1.3     5.3    5.4
+     >>=                               Data.Vector.Fusion.Util           Data/Vector/Fusion/Util.hs:36:3-18                    3021     200011    0.3    1.7     2.7    2.8
+      fmap                             Data.Vector.Fusion.Stream.Monadic Data/Vector/Fusion/Stream/Monadic.hs:(133,3)-(135,20) 3024      50004    0.7    0.6     2.3    1.0
+       basicUnsafeWrite                Data.Vector.Unboxed.Base          Data/Vector/Unboxed/Base.hs:241:1480-1538             3025      50002    0.0    0.0     1.7    0.4
+        basicUnsafeWrite               Data.Vector.Primitive.Mutable     Data/Vector/Primitive/Mutable.hs:124:3-69             3026      50002    1.3    0.4     1.7    0.4
+         primitive                     Control.Monad.Primitive           Control/Monad/Primitive.hs:205:3-16                   3030          0    0.3    0.0     0.3    0.0
+          writeByteArray#              Data.Primitive.Types              Data/Primitive/Types.hs:263:433-499                   3031      50002    0.0    0.0     0.0    0.0
+      countSemiprimes.noOfSemiprimes.\ Example                           src/Example.hs:16:40-64                               3041      50001    0.0    0.0     0.0    0.0
+     unId                              Data.Vector.Fusion.Util           Data/Vector/Fusion/Util.hs:25:21-24                   3020      50004    0.0    0.0     0.0    0.0
+     basicUnsafeSlice                  Data.Vector.Unboxed.Base          Data/Vector/Unboxed/Base.hs:241:1016-1084             3027      50003    0.0    0.0     0.0    0.3
+      basicUnsafeSlice                 Data.Vector.Primitive.Mutable     Data/Vector/Primitive/Mutable.hs:(94,3)-(95,25)       3028      50003    0.0    0.3     0.0    0.3
+     basicUnsafeIndexM                 Data.Vector.Unboxed.Base          Data/Vector/Unboxed/Base.hs:376:3-73                  3035      50001    0.0    0.0     1.0    0.7
+      >>=                              Data.Vector.Fusion.Util           Data/Vector/Fusion/Util.hs:50:3-19                    3040      50001    0.7    0.4     0.7    0.4
+      basicUnsafeIndexM                Data.Vector.Primitive             Data/Vector/Primitive.hs:234:3-75                     3036      50001    0.3    0.3     0.3    0.3
+       indexByteArray#                 Data.Primitive.Types              Data/Primitive/Types.hs:251:220-288                   3037      50001    0.0    0.0     0.0    0.0
+     +                                 Data.Vector.Fusion.Bundle.Size    Data/Vector/Fusion/Bundle/Size.hs:(26,3)-(32,29)      3008          1    0.0    0.0     0.0    0.0
+     basicLength                       Data.Vector.Unboxed.Base          Data/Vector/Unboxed/Base.hs:374:3-42                  3004          1    0.0    0.0     0.0    0.0
+      basicLength                      Data.Vector.Primitive             Data/Vector/Primitive.hs:228:3-32                     3005          1    0.0    0.0     0.0    0.0
+     basicUnsafeFreeze                 Data.Vector.Unboxed.Base          Data/Vector/Unboxed/Base.hs:242:508-575               3050          1    0.0    0.0     0.0    0.0
+      basicUnsafeFreeze                Data.Vector.Primitive             Data/Vector/Primitive.hs:(220,3)-(221,51)             3051          1    0.0    0.0     0.0    0.0
+       primitive                       Control.Monad.Primitive           Control/Monad/Primitive.hs:205:3-16                   3052          1    0.0    0.0     0.0    0.0
+     basicUnsafeNew                    Data.Vector.Unboxed.Base          Data/Vector/Unboxed/Base.hs:241:1176-1228             3010          1    0.0    0.0     0.0    0.1
+      basicUnsafeNew                   Data.Vector.Primitive.Mutable     Data/Vector/Primitive/Mutable.hs:(105,3)-(111,37)     3011          1    0.0    0.0     0.0    0.1
+       basicUnsafeNew.mx               Data.Vector.Primitive.Mutable     Data/Vector/Primitive/Mutable.hs:111:7-37             3012          1    0.0    0.0     0.0    0.0
+       basicUnsafeNew.size             Data.Vector.Primitive.Mutable     Data/Vector/Primitive/Mutable.hs:110:7-36             3013          1    0.0    0.0     0.0    0.0
+        sizeOf                         Data.Primitive.Types              Data/Primitive/Types.hs:131:1-25                      3014          1    0.0    0.0     0.0    0.0
+         sizeOf#                       Data.Primitive.Types              Data/Primitive/Types.hs:263:68-95                     3015          1    0.0    0.0     0.0    0.0
+          unI#                         Data.Primitive.Types              Data/Primitive/Types.hs:246:1-17                      3016          1    0.0    0.0     0.0    0.0
+       primitive                       Control.Monad.Primitive           Control/Monad/Primitive.hs:205:3-16                   3018          1    0.0    0.1     0.0    0.1
+     isNSemiprime                      Example                           src/Example.hs:(20,1)-(25,25)                         2886          1    0.0    0.0     0.0    0.2
+      isNSemiprime.\                   Example                           src/Example.hs:24:30-57                               2925      12110    0.0    0.0     0.0    0.1
+       basicUnsafeWrite                Data.Vector.Unboxed.Base          Data/Vector/Unboxed/Base.hs:358:3-72                  2926      12110    0.0    0.0     0.0    0.1
+        basicUnsafeWrite               Data.Vector.Primitive.Mutable     Data/Vector/Primitive/Mutable.hs:124:3-69             2927      12110    0.0    0.1     0.0    0.1
+         primitive                     Control.Monad.Primitive           Control/Monad/Primitive.hs:205:3-16                   2928      12110    0.0    0.0     0.0    0.0
+          writeByteArray#              Data.Primitive.Types              Data/Primitive/Types.hs:251:445-514                   2929      12110    0.0    0.0     0.0    0.0
+      basicInitialize                  Data.Vector.Unboxed.Base          Data/Vector/Unboxed/Base.hs:355:3-51                  2908          1    0.0    0.0     0.0    0.0
+       basicInitialize                 Data.Vector.Primitive.Mutable     Data/Vector/Primitive/Mutable.hs:(114,3)-(117,36)     2909          1    0.0    0.0     0.0    0.0
+        basicInitialize.size           Data.Vector.Primitive.Mutable     Data/Vector/Primitive/Mutable.hs:117:7-36             2910          1    0.0    0.0     0.0    0.0
+         sizeOf                        Data.Primitive.Types              Data/Primitive/Types.hs:131:1-25                      2911          1    0.0    0.0     0.0    0.0
+          sizeOf#                      Data.Primitive.Types              Data/Primitive/Types.hs:251:70-99                     2912          1    0.0    0.0     0.0    0.0
+           unI#                        Data.Primitive.Types              Data/Primitive/Types.hs:246:1-17                      2913          1    0.0    0.0     0.0    0.0
+        primitive                      Control.Monad.Primitive           Control/Monad/Primitive.hs:205:3-16                   2914          1    0.0    0.0     0.0    0.0
+         setByteArray#                 Data.Primitive.Types              Data/Primitive/Types.hs:251:521-878                   2915          1    0.0    0.0     0.0    0.0
+          internal                     Control.Monad.Primitive           Control/Monad/Primitive.hs:96:3-21                    2916          1    0.0    0.0     0.0    0.0
+          setByteArray#.i              Data.Primitive.Types              Data/Primitive/Types.hs:251:596-619                   2917          1    0.0    0.0     0.0    0.0
+          setByteArray#.n              Data.Primitive.Types              Data/Primitive/Types.hs:251:660-683                   2918          1    0.0    0.0     0.0    0.0
+      basicUnsafeFreeze                Data.Vector.Unboxed.Base          Data/Vector/Unboxed/Base.hs:372:3-70                  3001          1    0.0    0.0     0.0    0.0
+       basicUnsafeFreeze               Data.Vector.Primitive             Data/Vector/Primitive.hs:(220,3)-(221,51)             3002          1    0.0    0.0     0.0    0.0
+        primitive                      Control.Monad.Primitive           Control/Monad/Primitive.hs:205:3-16                   3003          1    0.0    0.0     0.0    0.0
+      basicUnsafeNew                   Data.Vector.Unboxed.Base          Data/Vector/Unboxed/Base.hs:354:3-55                  2888          1    0.0    0.0     0.0    0.0
+       basicUnsafeNew                  Data.Vector.Primitive.Mutable     Data/Vector/Primitive/Mutable.hs:(105,3)-(111,37)     2889          1    0.0    0.0     0.0    0.0
+        basicUnsafeNew.mx              Data.Vector.Primitive.Mutable     Data/Vector/Primitive/Mutable.hs:111:7-37             2890          1    0.0    0.0     0.0    0.0
+        primitive                      Control.Monad.Primitive           Control/Monad/Primitive.hs:205:3-16                   2907          1    0.0    0.0     0.0    0.0
+      isNSemiprime.nSemiprimes         Example                           src/Example.hs:23:9-40                                2919          1    0.0    0.0     0.0    0.1
+       semiprimesTo                    Example                           src/Example.hs:28:1-52                                2920          1    0.0    0.1     0.0    0.1
+     sChunks                           Data.Vector.Fusion.Bundle.Monadic Data/Vector/Fusion/Bundle/Monadic.hs:122:30-36        3019          1    0.0    0.0     0.0    0.0
+     sSize                             Data.Vector.Fusion.Bundle.Monadic Data/Vector/Fusion/Bundle/Monadic.hs:124:30-34        3007          1    0.0    0.0     0.0    0.0
+     upperBound                        Data.Vector.Fusion.Bundle.Size    Data/Vector/Fusion/Bundle/Size.hs:(126,1)-(128,30)    3006          1    0.0    0.0     0.0    0.0
+   profile                             Main                              app/Main.hs:27:1-65                                   2878          0    0.0    0.0     0.0    0.0
+    program                            Main                              app/Main.hs:27:63-65                                  2879          0    0.0    0.0     0.0    0.0
+ CAF:run37                             Main                              <no location info>                                    2862          0    0.0    0.0     0.0    0.0
+ CAF:run_x                             Main                              <no location info>                                    2859          0    0.0    0.0     0.0    0.0
+  run                                  Main                              app/Main.hs:(13,1)-(24,17)                            2874          0    0.0    0.0     0.0    0.0
+   countSemiprimes                     Example                           src/Example.hs:(12,1)-(17,22)                         2881          0    0.0    0.0     0.0    0.0
+    countSemiprimes.\                  Example                           src/Example.hs:13:23-67                               2882          9    0.0    0.0     0.0    0.0
+     unId                              Data.Vector.Fusion.Util           Data/Vector/Fusion/Util.hs:25:21-24                   2884         36    0.0    0.0     0.0    0.0
+     basicLength                       Data.Vector.Unboxed.Base          Data/Vector/Unboxed/Base.hs:242:664-703               3053         18    0.0    0.0     0.0    0.0
+      basicLength                      Data.Vector.Primitive             Data/Vector/Primitive.hs:228:3-32                     3054         18    0.0    0.0     0.0    0.0
+     basicUnsafeIndexM                 Data.Vector.Unboxed.Base          Data/Vector/Unboxed/Base.hs:242:817-872               3055         18    0.0    0.0     0.0    0.0
+      basicUnsafeIndexM                Data.Vector.Primitive             Data/Vector/Primitive.hs:234:3-75                     3056         18    0.0    0.0     0.0    0.0
+       indexByteArray#                 Data.Primitive.Types              Data/Primitive/Types.hs:263:214-279                   3057         18    0.0    0.0     0.0    0.0
+   profile                             Main                              app/Main.hs:27:1-65                                   2875          0    0.0    0.0     0.0    0.0
+    program                            Main                              app/Main.hs:27:63-65                                  2876          1    0.0    0.0     0.0    0.0
+ CAF:sIZEOF_INT                        Data.Primitive.MachDeps           Data/Primitive/MachDeps.hs:71:1-10                    2178          0    0.0    0.0     0.0    0.0
+  sIZEOF_INT                           Data.Primitive.MachDeps           Data/Primitive/MachDeps.hs:71:1-14                    3017          1    0.0    0.0     0.0    0.0
+ CAF:sIZEOF_WORD8                      Data.Primitive.MachDeps           Data/Primitive/MachDeps.hs:95:1-12                    2194          0    0.0    0.0     0.0    0.0
+  sIZEOF_WORD8                         Data.Primitive.MachDeps           Data/Primitive/MachDeps.hs:95:1-16                    2906          1    0.0    0.0     0.0    0.0
+ CAF:semiprimes_$ssemiprimes           Example                           src/Example.hs:31:1-10                                2817          0    0.0    0.0    93.7   92.5
+  semiprimes                           Example                           src/Example.hs:(31,1)-(33,51)                         2921          1    0.0    0.1    93.7   92.5
+   semiprimes.\                        Example                           src/Example.hs:31:29-58                               2924       2763    0.0    0.0    93.7   92.4
+    semiprimes.facts                   Example                           src/Example.hs:33:5-51                                2933       2762    0.0    0.3     0.0    0.5
+     primesTo                          Example                           src/Example.hs:36:1-44                                2934       2762    0.0    0.2     0.0    0.2
+    union                              Data.List.Ordered                 Data/List/Ordered.hs:231:1-23                         2930       2762   22.3    0.0    93.7   91.9
+     unionBy                           Data.List.Ordered                 Data/List/Ordered.hs:(235,1)-(243,34)                 2931       2762    0.0    0.0    71.4   91.9
+      unionBy.loop                     Data.List.Ordered                 Data/List/Ordered.hs:(237,6)-(243,34)                 2932    7246750   71.4   91.9    71.4   91.9
+ CAF:size48_rfui                       Example                           <no location info>                                    2819          0    0.0    0.0     0.0    0.0
+  countSemiprimes                      Example                           src/Example.hs:(12,1)-(17,22)                         2897          0    0.0    0.0     0.0    0.0
+   countSemiprimes.noOfSemiprimes      Example                           src/Example.hs:(15,5)-(17,22)                         2898          0    0.0    0.0     0.0    0.0
+    isNSemiprime                       Example                           src/Example.hs:(20,1)-(25,25)                         2899          0    0.0    0.0     0.0    0.0
+     basicUnsafeNew                    Data.Vector.Unboxed.Base          Data/Vector/Unboxed/Base.hs:354:3-55                  2900          0    0.0    0.0     0.0    0.0
+      basicUnsafeNew                   Data.Vector.Primitive.Mutable     Data/Vector/Primitive/Mutable.hs:(105,3)-(111,37)     2901          0    0.0    0.0     0.0    0.0
+       basicUnsafeNew.size             Data.Vector.Primitive.Mutable     Data/Vector/Primitive/Mutable.hs:110:7-36             2902          1    0.0    0.0     0.0    0.0
+        sizeOf                         Data.Primitive.Types              Data/Primitive/Types.hs:131:1-25                      2903          1    0.0    0.0     0.0    0.0
+         sizeOf#                       Data.Primitive.Types              Data/Primitive/Types.hs:251:70-99                     2904          1    0.0    0.0     0.0    0.0
+          unI#                         Data.Primitive.Types              Data/Primitive/Types.hs:246:1-17                      2905          1    0.0    0.0     0.0    0.0
+ main                                  Main                              app/Main.hs:10:1-22                                   2867          0    0.0    0.0     0.0    0.0
+  run                                  Main                              app/Main.hs:(13,1)-(24,17)                            2868          1    0.0    0.0     0.0    0.0
+   profile                             Main                              app/Main.hs:27:1-65                                   2871          0    0.0    0.0     0.0    0.0
diff --git a/test/prof_files/errors.prof b/test/prof_files/errors.prof
new file mode 100644
--- /dev/null
+++ b/test/prof_files/errors.prof
@@ -0,0 +1,137 @@
+	Sun May 24 18:56 2020 Time and Allocation Profiling Report  (Final)
+
+	   prog-exe +RTS -i0.001 -ki64k -posemiprimes -s -P -RTS semiprimes
+
+	total time  =        0.28 secs   (276 ticks @ 1000 us, 1 processor)
+	total alloc = 487,091,392 bytes  (excludes profiling overheads)
+
+COST CENTRE      MODULE            SRC                                    %time %alloc  ticks     bytes
+
+unionBy.loop     Data.List.Ordered Data/List/Ordered.hs:(237,6)-(243,34)   94.2   95.2    260 463788928
+semiprimes.facts Example           src/Example.hs:33:5-51                   1.4    0.4      4   1814960
+
+
+                                                                                                                                   individual      inherited
+COST CENTRE                          MODULE                     SRC                                            no.      entries  %time %alloc   %time %alloc  ticks     bytes
+
+MAIN                                 MAIN                       <built-in>                                     1433          0    _      0.0   100.0  100.0      0    150808
+ CAF                                 GHC.Conc.Signal            <entire-module>                                1547          0    0.0    0.0     0.0    0.0      0       656
+ CAF                                 GHC.IO.Encoding            <entire-module>                                1531          0    0.0    0.0     0.0    0.0      0      3168
+ CAF                                 GHC.IO.Encoding.Iconv      <entire-module>                                1529          0    0.0    0.0     0.0    0.0      0       200
+ CAF                                 GHC.IO.Handle.FD           <entire-module>                                1521          0    0.4    0.0     0.4    0.0      1     34704
+ CAF                                 GHC.Event.Thread           <entire-module>                                1481          0    0.0    0.0     0.0    0.0      0      1216
+ CAF                                 GHC.Event.Poll             <entire-module>                                1451          0    0.0    0.0     0.0    0.0      0        48
+ CAF:empty                           Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:131:1-5          1596          0    0.0    0.0     0.0    0.0      0         0
+  empty                              Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:131:1-13         2905          1    0.0    0.0     0.0    0.0      0         0
+ CAF:findMin                         Data.PQueue.Prio.Min       Data/PQueue/Prio/Min.hs:189:1-7                1628          0    0.0    0.0     0.0    0.0      0        16
+  findMin                            Data.PQueue.Prio.Min       Data/PQueue/Prio/Min.hs:189:1-78               2899          1    0.0    0.0     0.0    0.0      0         0
+ CAF:main1                           Main                       <no location info>                             2864          0    0.0    0.0     0.0    0.0      0        16
+  main                               Main                       app/Main.hs:10:1-22                            2866          1    0.0    0.0     0.0    0.0      0         0
+ CAF:nextComposite_rfu0              Example                    src/Example.hs:45:5-17                         2811          0    0.0    0.0     0.0    0.0      0         0
+  primes                             Example                    src/Example.hs:(61,1)-(117,55)                 2894          0    0.0    0.0     0.0    0.0      0         0
+   primes.large                      Example                    src/Example.hs:65:5-37                         2895          0    0.0    0.0     0.0    0.0      0         0
+    sieve                            Example                    src/Example.hs:(40,1)-(58,53)                  2896          0    0.0    0.0     0.0    0.0      0        16
+     sieve.nextComposite             Example                    src/Example.hs:45:5-36                         2897          1    0.0    0.0     0.0    0.0      0         0
+ CAF:run33                           Main                       <no location info>                             2856          0    0.0    0.0     0.0    0.0      0         0
+  run                                Main                       app/Main.hs:(13,1)-(24,17)                     2869          0    0.0    0.0     0.0    0.0      0        16
+   profile                           Main                       app/Main.hs:27:1-65                            2870          1    0.0    0.0     0.0    0.0      0         0
+ CAF:run34                           Main                       <no location info>                             2855          0    0.0    0.0     0.0    0.0      0         0
+  run                                Main                       app/Main.hs:(13,1)-(24,17)                     2872          0    0.0    0.0     0.0    0.0      0         0
+   profile                           Main                       app/Main.hs:27:1-65                            2873          0    0.0    0.0     0.0    0.0      0        16
+ CAF:run35                           Main                       <no location info>                             2857          0    0.0    0.0     0.0    0.0      0       720
+ CAF:run37                           Main                       <no location info>                             2862          0    0.0    0.0     0.0    0.0      0        72
+ CAF:run_x1                          Main                       <no location info>                             2854          0    0.0    0.0    99.6  100.0      0         0
+  run                                Main                       app/Main.hs:(13,1)-(24,17)                     2874          0    0.0    0.0    99.6  100.0      0         0
+   profile                           Main                       app/Main.hs:27:1-65                            2875          0    0.0    0.0    99.6  100.0      0         0
+    program                          Main                       app/Main.hs:27:63-65                           2876          1    0.0    0.0    99.6  100.0      0        48
+     semiprimesTo                    Example                    src/Example.hs:28:1-52                         2877          1    0.4    0.1    99.6  100.0      1    678352
+      semiprimes                     Example                    src/Example.hs:(31,1)-(33,51)                  2878          1    0.0    0.1    99.3   99.8      0    442264
+       semiprimes.\                  Example                    src/Example.hs:31:29-58                        2881       2763    0.0    0.0    97.1   97.2      0    154704
+        semiprimes.facts             Example                    src/Example.hs:33:5-51                         2885       2762    1.4    0.4     2.9    2.0      4   1814960
+         primesTo                    Example                    src/Example.hs:36:1-44                         2886       2762    0.4    0.3     1.4    1.6      1   <error>
+          primes                     Example                    src/Example.hs:(61,1)-(117,55)                 2887       2762    0.0    0.2     1.1    1.3      0   1104424
+           primes.small              Example                    src/Example.hs:63:5-24                         2888       2762    0.0    0.0     0.0    0.0      0    138848
+           primes.large              Example                    src/Example.hs:65:5-37                         2910        911    0.0    0.0     0.7    0.8      0    116608
+            primes.spin              Example                    src/Example.hs:117:5-55                        2911       6344    0.0    0.2     0.0    0.2      0    956208
+            sieve                    Example                    src/Example.hs:(40,1)-(58,53)                  2912        911    0.0    0.0     0.7    0.6      0    133936
+             sieve.sieve'            Example                    src/Example.hs:(49,5)-(52,46)                  2913       5433    0.0    0.2     0.4    0.5      0    862928
+              sieve.crossoff         Example                    src/Example.hs:43:5-68                         2922       4672    0.4    0.1     0.4    0.3      <error>    632696
+               insert                Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:150:1-21         2923       4672    0.0    0.1     0.0    0.2      0    566928
+                insert'              Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(169,1)-(172,59) 2924       4672    0.0    0.0     0.0    0.1      0         0
+                 incr                Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(297,1)-(300,50) 2960       3360    0.0    0.1     0.0    0.1      0    287232
+                  meld               Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(269,1)-(271,46) 2961       1592    0.0    0.0     0.0    0.0      0         0
+                 tip                 Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:265:1-28         2959       1768    0.0    0.0     0.0    0.0      0         0
+              sieve.adjust           Example                    src/Example.hs:(54,5)-(58,53)                  2948        300    0.0    0.0     0.0    0.0      0     50400
+               sieve.adjust.(...)    Example                    src/Example.hs:58:9-53                         2950        300    0.0    0.0     0.0    0.0      0         0
+                deleteFindMin        Data.PQueue.Prio.Min       Data/PQueue/Prio/Min.hs:198:1-98               2951        300    0.0    0.0     0.0    0.0      0         0
+                 minViewWithKey      Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(209,1)-(210,70) 2952        300    0.0    0.0     0.0    0.0      0         0
+                  extractHeap        Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(312,1)-(314,48) 2957        150    0.0    0.0     0.0    0.0      0      6000
+                   extractForest     Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(354,1)-(363,27) 2958        955    0.0    0.0     0.0    0.0      0     69720
+                    incrExtract      Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(345,1)-(348,54) 2963        546    0.0    0.0     0.0    0.0      0      5320
+                     incr            Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(297,1)-(300,50) 2968        305    0.0    0.0     0.0    0.0      0     28712
+                      meld           Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(269,1)-(271,46) 2969        172    0.0    0.0     0.0    0.0      0         0
+                     meld            Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(269,1)-(271,46) 2967        133    0.0    0.0     0.0    0.0      0         0
+                    extractForest.<? Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:363:5-27         2962        315    0.0    0.0     0.0    0.0      0         0
+               sieve.adjust.n        Example                    src/Example.hs:58:9-53                         2949        300    0.0    0.0     0.0    0.0      0         0
+               sieve.adjust.facts    Example                    src/Example.hs:58:9-53                         2964        150    0.0    0.0     0.0    0.0      0         0
+               sieve.adjust.table'   Example                    src/Example.hs:58:9-53                         2956        150    0.0    0.0     0.0    0.0      0         0
+               sieve.reinsert        Example                    src/Example.hs:47:5-56                         2953        150    0.0    0.0     0.0    0.0      0     14400
+                insert               Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:150:1-21         2954        150    0.0    0.0     0.0    0.0      0     18000
+                 insert'             Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(169,1)-(172,59) 2955        150    0.0    0.0     0.0    0.0      0         0
+                  incr               Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(297,1)-(300,50) 2966        111    0.0    0.0     0.0    0.0      0      6072
+                   meld              Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(269,1)-(271,46) 2970         17    0.0    0.0     0.0    0.0      0         0
+                  tip                Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:265:1-28         2965         94    0.0    0.0     0.0    0.0      0         0
+             sieve.crossoff          Example                    src/Example.hs:43:5-68                         2918        611    0.4    0.0     0.4    0.0      1     97024
+              insert                 Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:150:1-21         2919        611    0.0    0.0     0.0    0.0      0     19552
+               insert'               Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(169,1)-(172,59) 2920        611    0.0    0.0     0.0    0.0      0     24440
+                singleton            Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:145:1-31         2921        611    0.0    0.0     0.0    0.0      0         0
+             sieve.nextComposite     Example                    src/Example.hs:45:5-36                         2915          0    0.0    0.0     0.0    0.0      0         0
+              findMin                Data.PQueue.Prio.Min       Data/PQueue/Prio/Min.hs:189:1-78               2916          0    0.0    0.0     0.0    0.0      0    130392
+               getMin                Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(190,1)-(191,32) 2917       5433    0.0    0.0     0.0    0.0      0         0
+           primes.wheel2357          Example                    src/Example.hs:(67,5)-(115,11)                 2914        611    0.4    0.2     0.4    0.2      1   1105808
+        union                        Data.List.Ordered          Data/List/Ordered.hs:231:1-23                  2882       2762    0.0    0.0    94.2   95.2      0         0
+         unionBy                     Data.List.Ordered          Data/List/Ordered.hs:(235,1)-(243,34)          2883       2762    0.0    0.0    94.2   95.2      0     44192
+          unionBy.loop               Data.List.Ordered          Data/List/Ordered.hs:(237,6)-(243,34)          2884    7246750   94.2   95.2    94.2   95.2    260 463788928
+       primes                        Example                    src/Example.hs:(61,1)-(117,55)                 2879          1    0.0    0.0     2.2    2.5      0       464
+        primes.large                 Example                    src/Example.hs:65:5-37                         2889          1    0.0    0.0     2.2    2.5      0       128
+         primes.spin                 Example                    src/Example.hs:117:5-55                        2890       5717    0.0    0.2     0.0    0.2      0   1006016
+         sieve                       Example                    src/Example.hs:(40,1)-(58,53)                  2891          1    0.0    0.0     2.2    2.3      0       176
+          sieve.sieve'               Example                    src/Example.hs:(49,5)-(52,46)                  2892       5716    0.4    0.1     1.8    2.3      1    652616
+           sieve.adjust              Example                    src/Example.hs:(54,5)-(58,53)                  2925       6524    0.4    0.2     1.1    1.8      1   1120352
+            sieve.adjust.(...)       Example                    src/Example.hs:58:9-53                         2927       6524    0.0    0.0     0.4    1.3      0         0
+             deleteFindMin           Data.PQueue.Prio.Min       Data/PQueue/Prio/Min.hs:198:1-98               2928       6524    0.0    0.0     0.4    1.3      0         0
+              minViewWithKey         Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(209,1)-(210,70) 2929       6524    0.0    0.0     0.4    1.3      0         0
+               extractHeap           Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(312,1)-(314,48) 2934       3566    0.0    0.0     0.4    1.3      0    142640
+                extractForest        Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(354,1)-(363,27) 2935      42471    0.4    0.8     0.4    1.3      1   3681120
+                 incrExtract         Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(345,1)-(348,54) 2940      31818    0.0    0.1     0.0    0.5      0    477360
+                  incr               Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(297,1)-(300,50) 2945      23574    0.0    0.4     0.0    0.4      0   2060400
+                   meld              Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(269,1)-(271,46) 2946      11640    0.0    0.0     0.0    0.0      0         0
+                  meld               Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(269,1)-(271,46) 2944      11934    0.0    0.0     0.0    0.0      0         0
+                 extractForest.<?    Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:363:5-27         2939      16714    0.0    0.0     0.0    0.0      0         0
+            sieve.adjust.n           Example                    src/Example.hs:58:9-53                         2926       6524    0.0    0.0     0.0    0.0      0         0
+            sieve.adjust.facts       Example                    src/Example.hs:58:9-53                         2941       3566    0.0    0.0     0.0    0.0      0         0
+            sieve.adjust.table'      Example                    src/Example.hs:58:9-53                         2933       3566    0.0    0.0     0.0    0.0      0         0
+            sieve.reinsert           Example                    src/Example.hs:47:5-56                         2930       3566    0.0    0.1     0.4    0.3      0    339024
+             insert                  Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:150:1-21         2931       3566    0.4    0.1     0.4    0.2      1    431232
+              insert'                Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(169,1)-(172,59) 2932       3566    0.0    0.0     0.0    0.1      0         0
+               incr                  Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(297,1)-(300,50) 2943       7104    0.0    0.1     0.0    0.1      0    623904
+                meld                 Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(269,1)-(271,46) 2947       3539    0.0    0.0     0.0    0.0      0         0
+               tip                   Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:265:1-28         2942       3565    0.0    0.0     0.0    0.0      0         0
+           sieve.crossoff            Example                    src/Example.hs:43:5-68                         2907       2757    0.0    0.1     0.4    0.3      0    689872
+            insert                   Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:150:1-21         2908       2757    0.0    0.1     0.4    0.2      0    333576
+             insert'                 Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(169,1)-(172,59) 2909       2757    0.0    0.0     0.4    0.1      0         0
+              incr                   Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(297,1)-(300,50) 2937       5508    0.4    0.1     0.4    0.1      1    484416
+               meld                  Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(269,1)-(271,46) 2938       2751    0.0    0.0     0.0    0.0      0         0
+              tip                    Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:265:1-28         2936       2757    0.0    0.0     0.0    0.0      0         0
+          sieve.crossoff             Example                    src/Example.hs:43:5-68                         2902          1    0.0    0.0     0.0    0.0      0     54136
+           insert                    Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:150:1-21         2903          1    0.0    0.0     0.0    0.0      0        48
+            insert'                  Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(169,1)-(172,59) 2904          1    0.0    0.0     0.0    0.0      0        40
+             singleton               Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:145:1-31         2906          1    0.0    0.0     0.0    0.0      0         0
+          sieve.nextComposite        Example                    src/Example.hs:45:5-36                         2898          0    0.4    0.0     0.4    0.0      1        16
+           findMin                   Data.PQueue.Prio.Min       Data/PQueue/Prio/Min.hs:189:1-78               2900          0    0.0    0.0     0.0    0.0      0    137184
+            getMin                   Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(190,1)-(191,32) 2901       5716    0.0    0.0     0.0    0.0      0         0
+        primes.small                 Example                    src/Example.hs:63:5-24                         2880          1    0.0    0.0     0.0    0.0      0        64
+        primes.wheel2357             Example                    src/Example.hs:(67,5)-(115,11)                 2893          1    0.0    0.0     0.0    0.0      0      4040
+ main                                Main                       app/Main.hs:10:1-22                            2867          0    0.0    0.0     0.0    0.0      0      1288
+  run                                Main                       app/Main.hs:(13,1)-(24,17)                     2868          1    0.0    0.0     0.0    0.0      0        48
+   profile                           Main                       app/Main.hs:27:1-65                            2871          0    0.0    0.0     0.0    0.0      0        16
diff --git a/test/prof_files/malformed-bytes.prof b/test/prof_files/malformed-bytes.prof
new file mode 100644
--- /dev/null
+++ b/test/prof_files/malformed-bytes.prof
@@ -0,0 +1,6 @@
+	Sun May 24 19:22 2020 Time and Allocation Profiling Report  (Final)
+
+	   prog-exe +RTS -i0.001 -ki64k -pocountSemiprimes -s -p -RTS countSemiprimes
+
+	total time  =        0.30 secs   (301 ticks @ 1000 us, 1 processor)
+	total alloc = 504.592.280 bytes  (excludes profiling overheads)
diff --git a/test/prof_files/malformed-ticks.prof b/test/prof_files/malformed-ticks.prof
new file mode 100644
--- /dev/null
+++ b/test/prof_files/malformed-ticks.prof
@@ -0,0 +1,6 @@
+	Sun May 24 19:22 2020 Time and Allocation Profiling Report  (Final)
+
+	   prog-exe +RTS -i0.001 -ki64k -pocountSemiprimes -s -p -RTS countSemiprimes
+
+	total time  =        0.30 secs   (ticks @ 1000 us, 1 processor)
+	total alloc = 504,592,280 bytes  (excludes profiling overheads)
diff --git a/test/prof_files/no-data.prof b/test/prof_files/no-data.prof
new file mode 100644
--- /dev/null
+++ b/test/prof_files/no-data.prof
@@ -0,0 +1,7 @@
+	Sun May 24 18:56 2020 Time and Allocation Profiling Report  (Final)
+
+	   prog-exe +RTS -i0.001 -ki64k -posemiprimes -s -P -RTS semiprimes
+
+	total time  =        0.28 secs   (276 ticks @ 1000 us, 1 processor)
+	total alloc = 487,091,392 bytes  (excludes profiling overheads)
+
diff --git a/test/prof_files/no-header.prof b/test/prof_files/no-header.prof
new file mode 100644
--- /dev/null
+++ b/test/prof_files/no-header.prof
@@ -0,0 +1,11 @@
+	Sun May 24 18:56 2020 Time and Allocation Profiling Report  (Final)
+
+	   prog-exe +RTS -i0.001 -ki64k -posemiprimes -s -P -RTS semiprimes
+
+	total time  =        0.28 secs   (276 ticks @ 1000 us, 1 processor)
+	total alloc = 487,091,392 bytes  (excludes profiling overheads)
+
+COST CENTRE      MODULE            SRC                                    %time %alloc  ticks     bytes
+
+unionBy.loop     Data.List.Ordered Data/List/Ordered.hs:(237,6)-(243,34)   94.2   95.2    260 463788928
+semiprimes.facts Example           src/Example.hs:33:5-51                   1.4    0.4      4   1814960
diff --git a/test/prof_files/no-ticks.prof b/test/prof_files/no-ticks.prof
new file mode 100644
--- /dev/null
+++ b/test/prof_files/no-ticks.prof
@@ -0,0 +1,6 @@
+	Sun May 24 19:22 2020 Time and Allocation Profiling Report  (Final)
+
+	   prog-exe +RTS -i0.001 -ki64k -pocountSemiprimes -s -p -RTS countSemiprimes
+
+	total time  =        0.30 secs   (ticks @ 1000 us, 1 processor)
+	total alloc = 504,592,280 bytes  (excludes profiling overheads)
diff --git a/test/prof_files/no-totals.prof b/test/prof_files/no-totals.prof
new file mode 100644
--- /dev/null
+++ b/test/prof_files/no-totals.prof
@@ -0,0 +1,212 @@
+COST CENTRE                    MODULE                        SRC                                        %time %alloc
+
+unionBy.loop                   Data.List.Ordered             Data/List/Ordered.hs:(237,6)-(243,34)       71.4   91.9
+union                          Data.List.Ordered             Data/List/Ordered.hs:231:1-23               22.3    0.0
+countSemiprimes.noOfSemiprimes Example                       src/Example.hs:(15,5)-(17,22)                1.7    1.3
+basicUnsafeWrite               Data.Vector.Primitive.Mutable Data/Vector/Primitive/Mutable.hs:124:3-69    1.3    0.5
+>>=                            Data.Vector.Fusion.Util       Data/Vector/Fusion/Util.hs:36:3-18           0.3    1.7
+
+
+                                                                                                                                                   individual      inherited
+COST CENTRE                            MODULE                            SRC                                                   no.      entries  %time %alloc   %time %alloc
+
+MAIN                                   MAIN                              <built-in>                                            1433          0    0.0    0.0   100.0  100.0
+ CAF                                   GHC.Conc.Signal                   <entire-module>                                       1547          0    0.0    0.0     0.0    0.0
+ CAF                                   GHC.IO.Encoding                   <entire-module>                                       1531          0    0.0    0.0     0.0    0.0
+ CAF                                   GHC.IO.Encoding.Iconv             <entire-module>                                       1529          0    0.0    0.0     0.0    0.0
+ CAF                                   GHC.IO.Handle.FD                  <entire-module>                                       1521          0    0.0    0.0     0.0    0.0
+ CAF                                   GHC.Event.Thread                  <entire-module>                                       1481          0    0.0    0.0     0.0    0.0
+ CAF                                   GHC.Event.Poll                    <entire-module>                                       1451          0    0.0    0.0     0.0    0.0
+ CAF:$fApplicativeBox_$cpure           Data.Vector.Fusion.Util           Data/Vector/Fusion/Util.hs:45:3-6                     2783          0    0.0    0.0     0.0    0.0
+  pure                                 Data.Vector.Fusion.Util           Data/Vector/Fusion/Util.hs:45:3-12                    3039          1    0.0    0.0     0.0    0.0
+ CAF:$fApplicativeId4                  Data.Vector.Fusion.Util           <no location info>                                    2780          0    0.0    0.0     0.0    0.0
+  pure                                 Data.Vector.Fusion.Util           Data/Vector/Fusion/Util.hs:31:3-11                    3023          1    0.0    0.0     0.0    0.0
+ CAF:$fMonadBox_$creturn               Data.Vector.Fusion.Util           Data/Vector/Fusion/Util.hs:49:3-8                     2784          0    0.0    0.0     0.0    0.0
+  return                               Data.Vector.Fusion.Util           Data/Vector/Fusion/Util.hs:49:3-15                    3038          1    0.0    0.0     0.0    0.0
+ CAF:$fMonadId1                        Data.Vector.Fusion.Util           <no location info>                                    2782          0    0.0    0.0     0.0    0.0
+  return                               Data.Vector.Fusion.Util           Data/Vector/Fusion/Util.hs:35:3-15                    3022          1    0.0    0.0     0.0    0.0
+ CAF:$fPrimMonadST1_r5gX               Control.Monad.Primitive           <no location info>                                    2209          0    0.0    0.0     0.0    0.0
+  primitive                            Control.Monad.Primitive           Control/Monad/Primitive.hs:205:3-16                   3029          1    0.0    0.0     0.0    0.0
+ CAF:doBoundsChecks                    Data.Vector.Internal.Check        Data/Vector/Internal/Check.hs:55:1-14                 2785          0    0.0    0.0     0.0    0.0
+  doBoundsChecks                       Data.Vector.Internal.Check        Data/Vector/Internal/Check.hs:55:1-21                 2883          1    0.0    0.0     0.0    0.0
+ CAF:doInternalChecks                  Data.Vector.Internal.Check        Data/Vector/Internal/Check.hs:71:1-16                 2787          0    0.0    0.0     0.0    0.0
+  doInternalChecks                     Data.Vector.Internal.Check        Data/Vector/Internal/Check.hs:71:1-24                 3009          1    0.0    0.0     0.0    0.0
+ CAF:doUnsafeChecks                    Data.Vector.Internal.Check        Data/Vector/Internal/Check.hs:64:1-14                 2786          0    0.0    0.0     0.0    0.0
+  doUnsafeChecks                       Data.Vector.Internal.Check        Data/Vector/Internal/Check.hs:64:1-22                 2887          1    0.0    0.0     0.0    0.0
+ CAF:empty                             Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:131:1-5                 1596          0    0.0    0.0     0.0    0.0
+  empty                                Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:131:1-13                2961          1    0.0    0.0     0.0    0.0
+ CAF:findMin                           Data.PQueue.Prio.Min              Data/PQueue/Prio/Min.hs:189:1-7                       1628          0    0.0    0.0     0.0    0.0
+  findMin                              Data.PQueue.Prio.Min              Data/PQueue/Prio/Min.hs:189:1-78                      2955          1    0.0    0.0     0.0    0.0
+ CAF:lvl60_rful                        Example                           <no location info>                                    2820          0    0.0    0.0     0.0    0.0
+  countSemiprimes                      Example                           src/Example.hs:(12,1)-(17,22)                         2891          0    0.0    0.0     0.0    0.0
+   countSemiprimes.noOfSemiprimes      Example                           src/Example.hs:(15,5)-(17,22)                         2892          0    0.0    0.0     0.0    0.0
+    isNSemiprime                       Example                           src/Example.hs:(20,1)-(25,25)                         2893          0    0.0    0.0     0.0    0.0
+     basicUnsafeNew                    Data.Vector.Unboxed.Base          Data/Vector/Unboxed/Base.hs:354:3-55                  2894          0    0.0    0.0     0.0    0.0
+      basicUnsafeNew                   Data.Vector.Primitive.Mutable     Data/Vector/Primitive/Mutable.hs:(105,3)-(111,37)     2895          0    0.0    0.0     0.0    0.0
+       basicUnsafeNew.mx               Data.Vector.Primitive.Mutable     Data/Vector/Primitive/Mutable.hs:111:7-37             2896          0    0.0    0.0     0.0    0.0
+ CAF:main1                             Main                              <no location info>                                    2864          0    0.0    0.0     0.0    0.0
+  main                                 Main                              app/Main.hs:10:1-22                                   2866          1    0.0    0.0     0.0    0.0
+ CAF:nextComposite_rfu0                Example                           src/Example.hs:45:5-17                                2811          0    0.0    0.0     0.0    0.0
+  primes                               Example                           src/Example.hs:(61,1)-(117,55)                        2950          0    0.0    0.0     0.0    0.0
+   primes.large                        Example                           src/Example.hs:65:5-37                                2951          0    0.0    0.0     0.0    0.0
+    sieve                              Example                           src/Example.hs:(40,1)-(58,53)                         2952          0    0.0    0.0     0.0    0.0
+     sieve.nextComposite               Example                           src/Example.hs:45:5-36                                2953          1    0.0    0.0     0.0    0.0
+ CAF:primesTo10                        Example                           <no location info>                                    2810          0    0.0    0.0     0.0    0.1
+  primes                               Example                           src/Example.hs:(61,1)-(117,55)                        2942          0    0.0    0.0     0.0    0.1
+   primes.large                        Example                           src/Example.hs:65:5-37                                2943          0    0.0    0.0     0.0    0.1
+    primes.spin                        Example                           src/Example.hs:117:5-55                               2944       5717    0.0    0.1     0.0    0.1
+ CAF:primesTo8                         Example                           <no location info>                                    2814          0    0.0    0.0     1.0    1.9
+  primes                               Example                           src/Example.hs:(61,1)-(117,55)                        2939          0    0.0    0.0     1.0    1.9
+   primes.large                        Example                           src/Example.hs:65:5-37                                2940          0    0.0    0.0     1.0    1.9
+    sieve                              Example                           src/Example.hs:(40,1)-(58,53)                         2941          1    0.0    0.0     1.0    1.9
+     sieve.sieve'                      Example                           src/Example.hs:(49,5)-(52,46)                         2945       5716    0.0    0.1     1.0    1.9
+      sieve.adjust                     Example                           src/Example.hs:(54,5)-(58,53)                         2966       6524    0.3    0.0     0.7    1.5
+       sieve.adjust.(...)              Example                           src/Example.hs:58:9-53                                2968       6524    0.0    0.0     0.3    1.3
+        deleteFindMin                  Data.PQueue.Prio.Min              Data/PQueue/Prio/Min.hs:198:1-98                      2969       6524    0.0    0.0     0.3    1.3
+         minViewWithKey                Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:(209,1)-(210,70)        2970       6524    0.0    0.0     0.3    1.3
+          extractHeap                  Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:(312,1)-(314,48)        2975       3566    0.0    0.0     0.3    1.3
+           extractForest               Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:(354,1)-(363,27)        2976      42471    0.3    0.7     0.3    1.2
+            incrExtract                Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:(345,1)-(348,54)        2986      31818    0.0    0.1     0.0    0.5
+             incr                      Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:(297,1)-(300,50)        2991      23574    0.0    0.4     0.0    0.4
+              meld                     Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:(269,1)-(271,46)        2992      11640    0.0    0.0     0.0    0.0
+             meld                      Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:(269,1)-(271,46)        2990      11934    0.0    0.0     0.0    0.0
+            extractForest.<?           Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:363:5-27                2985      16714    0.0    0.0     0.0    0.0
+       sieve.adjust.n                  Example                           src/Example.hs:58:9-53                                2967       6524    0.0    0.0     0.0    0.0
+       sieve.adjust.facts              Example                           src/Example.hs:58:9-53                                2987       3566    0.0    0.0     0.0    0.0
+       sieve.adjust.table'             Example                           src/Example.hs:58:9-53                                2974       3566    0.0    0.0     0.0    0.0
+       sieve.reinsert                  Example                           src/Example.hs:47:5-56                                2971       3566    0.0    0.0     0.0    0.2
+        insert                         Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:150:1-21                2972       3566    0.0    0.1     0.0    0.2
+         insert'                       Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:(169,1)-(172,59)        2973       3566    0.0    0.0     0.0    0.1
+          incr                         Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:(297,1)-(300,50)        2989       7104    0.0    0.1     0.0    0.1
+           meld                        Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:(269,1)-(271,46)        2993       3539    0.0    0.0     0.0    0.0
+          tip                          Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:265:1-28                2988       3565    0.0    0.0     0.0    0.0
+      sieve.crossoff                   Example                           src/Example.hs:43:5-68                                2963       2757    0.0    0.1     0.3    0.3
+       insert                          Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:150:1-21                2964       2757    0.3    0.0     0.3    0.1
+        insert'                        Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:(169,1)-(172,59)        2965       2757    0.0    0.0     0.0    0.1
+         incr                          Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:(297,1)-(300,50)        2978       5508    0.0    0.1     0.0    0.1
+          meld                         Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:(269,1)-(271,46)        2979       2751    0.0    0.0     0.0    0.0
+         tip                           Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:265:1-28                2977       2757    0.0    0.0     0.0    0.0
+     sieve.crossoff                    Example                           src/Example.hs:43:5-68                                2958          1    0.0    0.0     0.0    0.0
+      insert                           Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:150:1-21                2959          1    0.0    0.0     0.0    0.0
+       insert'                         Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:(169,1)-(172,59)        2960          1    0.0    0.0     0.0    0.0
+        singleton                      Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:145:1-31                2962          1    0.0    0.0     0.0    0.0
+     sieve.nextComposite               Example                           src/Example.hs:45:5-36                                2954          0    0.0    0.0     0.0    0.0
+      findMin                          Data.PQueue.Prio.Min              Data/PQueue/Prio/Min.hs:189:1-78                      2956          0    0.0    0.0     0.0    0.0
+       getMin                          Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:(190,1)-(191,32)        2957       5716    0.0    0.0     0.0    0.0
+ CAF:primesTo_$sprimes                 Example                           src/Example.hs:61:1-6                                 2815          0    0.0    0.0     0.0    0.0
+  primes                               Example                           src/Example.hs:(61,1)-(117,55)                        2922          1    0.0    0.0     0.0    0.0
+   primes.large                        Example                           src/Example.hs:65:5-37                                2938          1    0.0    0.0     0.0    0.0
+   primes.small                        Example                           src/Example.hs:63:5-24                                2923          1    0.0    0.0     0.0    0.0
+ CAF:primesTo_wheel2357                Example                           src/Example.hs:67:5-13                                2809          0    0.0    0.0     0.0    0.0
+  primes                               Example                           src/Example.hs:(61,1)-(117,55)                        2946          0    0.0    0.0     0.0    0.0
+   primes.wheel2357                    Example                           src/Example.hs:(67,5)-(115,11)                        2947          1    0.0    0.0     0.0    0.0
+ CAF:primesTo_xs'                      Example                           <no location info>                                    2808          0    0.0    0.0     0.0    0.0
+  primes                               Example                           src/Example.hs:(61,1)-(117,55)                        2948          0    0.0    0.0     0.0    0.0
+   primes.wheel2357                    Example                           src/Example.hs:(67,5)-(115,11)                        2949          0    0.0    0.0     0.0    0.0
+ CAF:run1                              Main                              <no location info>                                    2861          0    0.0    0.0     0.0    0.0
+  run                                  Main                              app/Main.hs:(13,1)-(24,17)                            2869          0    0.0    0.0     0.0    0.0
+   profile                             Main                              app/Main.hs:27:1-65                                   2870          1    0.0    0.0     0.0    0.0
+ CAF:run2                              Main                              <no location info>                                    2860          0    0.0    0.0     0.0    0.0
+  run                                  Main                              app/Main.hs:(13,1)-(24,17)                            2872          0    0.0    0.0     0.0    0.0
+   profile                             Main                              app/Main.hs:27:1-65                                   2873          0    0.0    0.0     0.0    0.0
+ CAF:run32                             Main                              <no location info>                                    2858          0    0.0    0.0     5.3    5.4
+  run                                  Main                              app/Main.hs:(13,1)-(24,17)                            2877          0    0.0    0.0     5.3    5.4
+   countSemiprimes                     Example                           src/Example.hs:(12,1)-(17,22)                         2880          1    0.0    0.0     5.3    5.4
+    countSemiprimes.noOfSemiprimes     Example                           src/Example.hs:(15,5)-(17,22)                         2885          1    1.7    1.3     5.3    5.4
+     >>=                               Data.Vector.Fusion.Util           Data/Vector/Fusion/Util.hs:36:3-18                    3021     200011    0.3    1.7     2.7    2.8
+      fmap                             Data.Vector.Fusion.Stream.Monadic Data/Vector/Fusion/Stream/Monadic.hs:(133,3)-(135,20) 3024      50004    0.7    0.6     2.3    1.0
+       basicUnsafeWrite                Data.Vector.Unboxed.Base          Data/Vector/Unboxed/Base.hs:241:1480-1538             3025      50002    0.0    0.0     1.7    0.4
+        basicUnsafeWrite               Data.Vector.Primitive.Mutable     Data/Vector/Primitive/Mutable.hs:124:3-69             3026      50002    1.3    0.4     1.7    0.4
+         primitive                     Control.Monad.Primitive           Control/Monad/Primitive.hs:205:3-16                   3030          0    0.3    0.0     0.3    0.0
+          writeByteArray#              Data.Primitive.Types              Data/Primitive/Types.hs:263:433-499                   3031      50002    0.0    0.0     0.0    0.0
+      countSemiprimes.noOfSemiprimes.\ Example                           src/Example.hs:16:40-64                               3041      50001    0.0    0.0     0.0    0.0
+     unId                              Data.Vector.Fusion.Util           Data/Vector/Fusion/Util.hs:25:21-24                   3020      50004    0.0    0.0     0.0    0.0
+     basicUnsafeSlice                  Data.Vector.Unboxed.Base          Data/Vector/Unboxed/Base.hs:241:1016-1084             3027      50003    0.0    0.0     0.0    0.3
+      basicUnsafeSlice                 Data.Vector.Primitive.Mutable     Data/Vector/Primitive/Mutable.hs:(94,3)-(95,25)       3028      50003    0.0    0.3     0.0    0.3
+     basicUnsafeIndexM                 Data.Vector.Unboxed.Base          Data/Vector/Unboxed/Base.hs:376:3-73                  3035      50001    0.0    0.0     1.0    0.7
+      >>=                              Data.Vector.Fusion.Util           Data/Vector/Fusion/Util.hs:50:3-19                    3040      50001    0.7    0.4     0.7    0.4
+      basicUnsafeIndexM                Data.Vector.Primitive             Data/Vector/Primitive.hs:234:3-75                     3036      50001    0.3    0.3     0.3    0.3
+       indexByteArray#                 Data.Primitive.Types              Data/Primitive/Types.hs:251:220-288                   3037      50001    0.0    0.0     0.0    0.0
+     +                                 Data.Vector.Fusion.Bundle.Size    Data/Vector/Fusion/Bundle/Size.hs:(26,3)-(32,29)      3008          1    0.0    0.0     0.0    0.0
+     basicLength                       Data.Vector.Unboxed.Base          Data/Vector/Unboxed/Base.hs:374:3-42                  3004          1    0.0    0.0     0.0    0.0
+      basicLength                      Data.Vector.Primitive             Data/Vector/Primitive.hs:228:3-32                     3005          1    0.0    0.0     0.0    0.0
+     basicUnsafeFreeze                 Data.Vector.Unboxed.Base          Data/Vector/Unboxed/Base.hs:242:508-575               3050          1    0.0    0.0     0.0    0.0
+      basicUnsafeFreeze                Data.Vector.Primitive             Data/Vector/Primitive.hs:(220,3)-(221,51)             3051          1    0.0    0.0     0.0    0.0
+       primitive                       Control.Monad.Primitive           Control/Monad/Primitive.hs:205:3-16                   3052          1    0.0    0.0     0.0    0.0
+     basicUnsafeNew                    Data.Vector.Unboxed.Base          Data/Vector/Unboxed/Base.hs:241:1176-1228             3010          1    0.0    0.0     0.0    0.1
+      basicUnsafeNew                   Data.Vector.Primitive.Mutable     Data/Vector/Primitive/Mutable.hs:(105,3)-(111,37)     3011          1    0.0    0.0     0.0    0.1
+       basicUnsafeNew.mx               Data.Vector.Primitive.Mutable     Data/Vector/Primitive/Mutable.hs:111:7-37             3012          1    0.0    0.0     0.0    0.0
+       basicUnsafeNew.size             Data.Vector.Primitive.Mutable     Data/Vector/Primitive/Mutable.hs:110:7-36             3013          1    0.0    0.0     0.0    0.0
+        sizeOf                         Data.Primitive.Types              Data/Primitive/Types.hs:131:1-25                      3014          1    0.0    0.0     0.0    0.0
+         sizeOf#                       Data.Primitive.Types              Data/Primitive/Types.hs:263:68-95                     3015          1    0.0    0.0     0.0    0.0
+          unI#                         Data.Primitive.Types              Data/Primitive/Types.hs:246:1-17                      3016          1    0.0    0.0     0.0    0.0
+       primitive                       Control.Monad.Primitive           Control/Monad/Primitive.hs:205:3-16                   3018          1    0.0    0.1     0.0    0.1
+     isNSemiprime                      Example                           src/Example.hs:(20,1)-(25,25)                         2886          1    0.0    0.0     0.0    0.2
+      isNSemiprime.\                   Example                           src/Example.hs:24:30-57                               2925      12110    0.0    0.0     0.0    0.1
+       basicUnsafeWrite                Data.Vector.Unboxed.Base          Data/Vector/Unboxed/Base.hs:358:3-72                  2926      12110    0.0    0.0     0.0    0.1
+        basicUnsafeWrite               Data.Vector.Primitive.Mutable     Data/Vector/Primitive/Mutable.hs:124:3-69             2927      12110    0.0    0.1     0.0    0.1
+         primitive                     Control.Monad.Primitive           Control/Monad/Primitive.hs:205:3-16                   2928      12110    0.0    0.0     0.0    0.0
+          writeByteArray#              Data.Primitive.Types              Data/Primitive/Types.hs:251:445-514                   2929      12110    0.0    0.0     0.0    0.0
+      basicInitialize                  Data.Vector.Unboxed.Base          Data/Vector/Unboxed/Base.hs:355:3-51                  2908          1    0.0    0.0     0.0    0.0
+       basicInitialize                 Data.Vector.Primitive.Mutable     Data/Vector/Primitive/Mutable.hs:(114,3)-(117,36)     2909          1    0.0    0.0     0.0    0.0
+        basicInitialize.size           Data.Vector.Primitive.Mutable     Data/Vector/Primitive/Mutable.hs:117:7-36             2910          1    0.0    0.0     0.0    0.0
+         sizeOf                        Data.Primitive.Types              Data/Primitive/Types.hs:131:1-25                      2911          1    0.0    0.0     0.0    0.0
+          sizeOf#                      Data.Primitive.Types              Data/Primitive/Types.hs:251:70-99                     2912          1    0.0    0.0     0.0    0.0
+           unI#                        Data.Primitive.Types              Data/Primitive/Types.hs:246:1-17                      2913          1    0.0    0.0     0.0    0.0
+        primitive                      Control.Monad.Primitive           Control/Monad/Primitive.hs:205:3-16                   2914          1    0.0    0.0     0.0    0.0
+         setByteArray#                 Data.Primitive.Types              Data/Primitive/Types.hs:251:521-878                   2915          1    0.0    0.0     0.0    0.0
+          internal                     Control.Monad.Primitive           Control/Monad/Primitive.hs:96:3-21                    2916          1    0.0    0.0     0.0    0.0
+          setByteArray#.i              Data.Primitive.Types              Data/Primitive/Types.hs:251:596-619                   2917          1    0.0    0.0     0.0    0.0
+          setByteArray#.n              Data.Primitive.Types              Data/Primitive/Types.hs:251:660-683                   2918          1    0.0    0.0     0.0    0.0
+      basicUnsafeFreeze                Data.Vector.Unboxed.Base          Data/Vector/Unboxed/Base.hs:372:3-70                  3001          1    0.0    0.0     0.0    0.0
+       basicUnsafeFreeze               Data.Vector.Primitive             Data/Vector/Primitive.hs:(220,3)-(221,51)             3002          1    0.0    0.0     0.0    0.0
+        primitive                      Control.Monad.Primitive           Control/Monad/Primitive.hs:205:3-16                   3003          1    0.0    0.0     0.0    0.0
+      basicUnsafeNew                   Data.Vector.Unboxed.Base          Data/Vector/Unboxed/Base.hs:354:3-55                  2888          1    0.0    0.0     0.0    0.0
+       basicUnsafeNew                  Data.Vector.Primitive.Mutable     Data/Vector/Primitive/Mutable.hs:(105,3)-(111,37)     2889          1    0.0    0.0     0.0    0.0
+        basicUnsafeNew.mx              Data.Vector.Primitive.Mutable     Data/Vector/Primitive/Mutable.hs:111:7-37             2890          1    0.0    0.0     0.0    0.0
+        primitive                      Control.Monad.Primitive           Control/Monad/Primitive.hs:205:3-16                   2907          1    0.0    0.0     0.0    0.0
+      isNSemiprime.nSemiprimes         Example                           src/Example.hs:23:9-40                                2919          1    0.0    0.0     0.0    0.1
+       semiprimesTo                    Example                           src/Example.hs:28:1-52                                2920          1    0.0    0.1     0.0    0.1
+     sChunks                           Data.Vector.Fusion.Bundle.Monadic Data/Vector/Fusion/Bundle/Monadic.hs:122:30-36        3019          1    0.0    0.0     0.0    0.0
+     sSize                             Data.Vector.Fusion.Bundle.Monadic Data/Vector/Fusion/Bundle/Monadic.hs:124:30-34        3007          1    0.0    0.0     0.0    0.0
+     upperBound                        Data.Vector.Fusion.Bundle.Size    Data/Vector/Fusion/Bundle/Size.hs:(126,1)-(128,30)    3006          1    0.0    0.0     0.0    0.0
+   profile                             Main                              app/Main.hs:27:1-65                                   2878          0    0.0    0.0     0.0    0.0
+    program                            Main                              app/Main.hs:27:63-65                                  2879          0    0.0    0.0     0.0    0.0
+ CAF:run37                             Main                              <no location info>                                    2862          0    0.0    0.0     0.0    0.0
+ CAF:run_x                             Main                              <no location info>                                    2859          0    0.0    0.0     0.0    0.0
+  run                                  Main                              app/Main.hs:(13,1)-(24,17)                            2874          0    0.0    0.0     0.0    0.0
+   countSemiprimes                     Example                           src/Example.hs:(12,1)-(17,22)                         2881          0    0.0    0.0     0.0    0.0
+    countSemiprimes.\                  Example                           src/Example.hs:13:23-67                               2882          9    0.0    0.0     0.0    0.0
+     unId                              Data.Vector.Fusion.Util           Data/Vector/Fusion/Util.hs:25:21-24                   2884         36    0.0    0.0     0.0    0.0
+     basicLength                       Data.Vector.Unboxed.Base          Data/Vector/Unboxed/Base.hs:242:664-703               3053         18    0.0    0.0     0.0    0.0
+      basicLength                      Data.Vector.Primitive             Data/Vector/Primitive.hs:228:3-32                     3054         18    0.0    0.0     0.0    0.0
+     basicUnsafeIndexM                 Data.Vector.Unboxed.Base          Data/Vector/Unboxed/Base.hs:242:817-872               3055         18    0.0    0.0     0.0    0.0
+      basicUnsafeIndexM                Data.Vector.Primitive             Data/Vector/Primitive.hs:234:3-75                     3056         18    0.0    0.0     0.0    0.0
+       indexByteArray#                 Data.Primitive.Types              Data/Primitive/Types.hs:263:214-279                   3057         18    0.0    0.0     0.0    0.0
+   profile                             Main                              app/Main.hs:27:1-65                                   2875          0    0.0    0.0     0.0    0.0
+    program                            Main                              app/Main.hs:27:63-65                                  2876          1    0.0    0.0     0.0    0.0
+ CAF:sIZEOF_INT                        Data.Primitive.MachDeps           Data/Primitive/MachDeps.hs:71:1-10                    2178          0    0.0    0.0     0.0    0.0
+  sIZEOF_INT                           Data.Primitive.MachDeps           Data/Primitive/MachDeps.hs:71:1-14                    3017          1    0.0    0.0     0.0    0.0
+ CAF:sIZEOF_WORD8                      Data.Primitive.MachDeps           Data/Primitive/MachDeps.hs:95:1-12                    2194          0    0.0    0.0     0.0    0.0
+  sIZEOF_WORD8                         Data.Primitive.MachDeps           Data/Primitive/MachDeps.hs:95:1-16                    2906          1    0.0    0.0     0.0    0.0
+ CAF:semiprimes_$ssemiprimes           Example                           src/Example.hs:31:1-10                                2817          0    0.0    0.0    93.7   92.5
+  semiprimes                           Example                           src/Example.hs:(31,1)-(33,51)                         2921          1    0.0    0.1    93.7   92.5
+   semiprimes.\                        Example                           src/Example.hs:31:29-58                               2924       2763    0.0    0.0    93.7   92.4
+    semiprimes.facts                   Example                           src/Example.hs:33:5-51                                2933       2762    0.0    0.3     0.0    0.5
+     primesTo                          Example                           src/Example.hs:36:1-44                                2934       2762    0.0    0.2     0.0    0.2
+    union                              Data.List.Ordered                 Data/List/Ordered.hs:231:1-23                         2930       2762   22.3    0.0    93.7   91.9
+     unionBy                           Data.List.Ordered                 Data/List/Ordered.hs:(235,1)-(243,34)                 2931       2762    0.0    0.0    71.4   91.9
+      unionBy.loop                     Data.List.Ordered                 Data/List/Ordered.hs:(237,6)-(243,34)                 2932    7246750   71.4   91.9    71.4   91.9
+ CAF:size48_rfui                       Example                           <no location info>                                    2819          0    0.0    0.0     0.0    0.0
+  countSemiprimes                      Example                           src/Example.hs:(12,1)-(17,22)                         2897          0    0.0    0.0     0.0    0.0
+   countSemiprimes.noOfSemiprimes      Example                           src/Example.hs:(15,5)-(17,22)                         2898          0    0.0    0.0     0.0    0.0
+    isNSemiprime                       Example                           src/Example.hs:(20,1)-(25,25)                         2899          0    0.0    0.0     0.0    0.0
+     basicUnsafeNew                    Data.Vector.Unboxed.Base          Data/Vector/Unboxed/Base.hs:354:3-55                  2900          0    0.0    0.0     0.0    0.0
+      basicUnsafeNew                   Data.Vector.Primitive.Mutable     Data/Vector/Primitive/Mutable.hs:(105,3)-(111,37)     2901          0    0.0    0.0     0.0    0.0
+       basicUnsafeNew.size             Data.Vector.Primitive.Mutable     Data/Vector/Primitive/Mutable.hs:110:7-36             2902          1    0.0    0.0     0.0    0.0
+        sizeOf                         Data.Primitive.Types              Data/Primitive/Types.hs:131:1-25                      2903          1    0.0    0.0     0.0    0.0
+         sizeOf#                       Data.Primitive.Types              Data/Primitive/Types.hs:251:70-99                     2904          1    0.0    0.0     0.0    0.0
+          unI#                         Data.Primitive.Types              Data/Primitive/Types.hs:246:1-17                      2905          1    0.0    0.0     0.0    0.0
+ main                                  Main                              app/Main.hs:10:1-22                                   2867          0    0.0    0.0     0.0    0.0
+  run                                  Main                              app/Main.hs:(13,1)-(24,17)                            2868          1    0.0    0.0     0.0    0.0
+   profile                             Main                              app/Main.hs:27:1-65                                   2871          0    0.0    0.0     0.0    0.0
diff --git a/test/prof_files/no_data.prof b/test/prof_files/no_data.prof
new file mode 100644
--- /dev/null
+++ b/test/prof_files/no_data.prof
@@ -0,0 +1,7 @@
+	Sun May 24 18:56 2020 Time and Allocation Profiling Report  (Final)
+
+	   prog-exe +RTS -i0.001 -ki64k -posemiprimes -s -P -RTS semiprimes
+
+	total time  =        0.28 secs   (276 ticks @ 1000 us, 1 processor)
+	total alloc = 487,091,392 bytes  (excludes profiling overheads)
+
diff --git a/test/prof_files/no_header.prof b/test/prof_files/no_header.prof
new file mode 100644
--- /dev/null
+++ b/test/prof_files/no_header.prof
@@ -0,0 +1,11 @@
+	Sun May 24 18:56 2020 Time and Allocation Profiling Report  (Final)
+
+	   prog-exe +RTS -i0.001 -ki64k -posemiprimes -s -P -RTS semiprimes
+
+	total time  =        0.28 secs   (276 ticks @ 1000 us, 1 processor)
+	total alloc = 487,091,392 bytes  (excludes profiling overheads)
+
+COST CENTRE      MODULE            SRC                                    %time %alloc  ticks     bytes
+
+unionBy.loop     Data.List.Ordered Data/List/Ordered.hs:(237,6)-(243,34)   94.2   95.2    260 463788928
+semiprimes.facts Example           src/Example.hs:33:5-51                   1.4    0.4      4   1814960
diff --git a/test/prof_files/semiprimes.prof b/test/prof_files/semiprimes.prof
new file mode 100644
--- /dev/null
+++ b/test/prof_files/semiprimes.prof
@@ -0,0 +1,137 @@
+	Sun May 24 18:56 2020 Time and Allocation Profiling Report  (Final)
+
+	   prog-exe +RTS -i0.001 -ki64k -posemiprimes -s -P -RTS semiprimes
+
+	total time  =        0.28 secs   (276 ticks @ 1000 us, 1 processor)
+	total alloc = 487,091,392 bytes  (excludes profiling overheads)
+
+COST CENTRE      MODULE            SRC                                    %time %alloc  ticks     bytes
+
+unionBy.loop     Data.List.Ordered Data/List/Ordered.hs:(237,6)-(243,34)   94.2   95.2    260 463788928
+semiprimes.facts Example           src/Example.hs:33:5-51                   1.4    0.4      4   1814960
+
+
+                                                                                                                                   individual      inherited
+COST CENTRE                          MODULE                     SRC                                            no.      entries  %time %alloc   %time %alloc  ticks     bytes
+
+MAIN                                 MAIN                       <built-in>                                     1433          0    0.0    0.0   100.0  100.0      0    150808
+ CAF                                 GHC.Conc.Signal            <entire-module>                                1547          0    0.0    0.0     0.0    0.0      0       656
+ CAF                                 GHC.IO.Encoding            <entire-module>                                1531          0    0.0    0.0     0.0    0.0      0      3168
+ CAF                                 GHC.IO.Encoding.Iconv      <entire-module>                                1529          0    0.0    0.0     0.0    0.0      0       200
+ CAF                                 GHC.IO.Handle.FD           <entire-module>                                1521          0    0.4    0.0     0.4    0.0      1     34704
+ CAF                                 GHC.Event.Thread           <entire-module>                                1481          0    0.0    0.0     0.0    0.0      0      1216
+ CAF                                 GHC.Event.Poll             <entire-module>                                1451          0    0.0    0.0     0.0    0.0      0        48
+ CAF:empty                           Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:131:1-5          1596          0    0.0    0.0     0.0    0.0      0         0
+  empty                              Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:131:1-13         2905          1    0.0    0.0     0.0    0.0      0         0
+ CAF:findMin                         Data.PQueue.Prio.Min       Data/PQueue/Prio/Min.hs:189:1-7                1628          0    0.0    0.0     0.0    0.0      0        16
+  findMin                            Data.PQueue.Prio.Min       Data/PQueue/Prio/Min.hs:189:1-78               2899          1    0.0    0.0     0.0    0.0      0         0
+ CAF:main1                           Main                       <no location info>                             2864          0    0.0    0.0     0.0    0.0      0        16
+  main                               Main                       app/Main.hs:10:1-22                            2866          1    0.0    0.0     0.0    0.0      0         0
+ CAF:nextComposite_rfu0              Example                    src/Example.hs:45:5-17                         2811          0    0.0    0.0     0.0    0.0      0         0
+  primes                             Example                    src/Example.hs:(61,1)-(117,55)                 2894          0    0.0    0.0     0.0    0.0      0         0
+   primes.large                      Example                    src/Example.hs:65:5-37                         2895          0    0.0    0.0     0.0    0.0      0         0
+    sieve                            Example                    src/Example.hs:(40,1)-(58,53)                  2896          0    0.0    0.0     0.0    0.0      0        16
+     sieve.nextComposite             Example                    src/Example.hs:45:5-36                         2897          1    0.0    0.0     0.0    0.0      0         0
+ CAF:run33                           Main                       <no location info>                             2856          0    0.0    0.0     0.0    0.0      0         0
+  run                                Main                       app/Main.hs:(13,1)-(24,17)                     2869          0    0.0    0.0     0.0    0.0      0        16
+   profile                           Main                       app/Main.hs:27:1-65                            2870          1    0.0    0.0     0.0    0.0      0         0
+ CAF:run34                           Main                       <no location info>                             2855          0    0.0    0.0     0.0    0.0      0         0
+  run                                Main                       app/Main.hs:(13,1)-(24,17)                     2872          0    0.0    0.0     0.0    0.0      0         0
+   profile                           Main                       app/Main.hs:27:1-65                            2873          0    0.0    0.0     0.0    0.0      0        16
+ CAF:run35                           Main                       <no location info>                             2857          0    0.0    0.0     0.0    0.0      0       720
+ CAF:run37                           Main                       <no location info>                             2862          0    0.0    0.0     0.0    0.0      0        72
+ CAF:run_x1                          Main                       <no location info>                             2854          0    0.0    0.0    99.6  100.0      0         0
+  run                                Main                       app/Main.hs:(13,1)-(24,17)                     2874          0    0.0    0.0    99.6  100.0      0         0
+   profile                           Main                       app/Main.hs:27:1-65                            2875          0    0.0    0.0    99.6  100.0      0         0
+    program                          Main                       app/Main.hs:27:63-65                           2876          1    0.0    0.0    99.6  100.0      0        48
+     semiprimesTo                    Example                    src/Example.hs:28:1-52                         2877          1    0.4    0.1    99.6  100.0      1    678352
+      semiprimes                     Example                    src/Example.hs:(31,1)-(33,51)                  2878          1    0.0    0.1    99.3   99.8      0    442264
+       semiprimes.\                  Example                    src/Example.hs:31:29-58                        2881       2763    0.0    0.0    97.1   97.2      0    154704
+        semiprimes.facts             Example                    src/Example.hs:33:5-51                         2885       2762    1.4    0.4     2.9    2.0      4   1814960
+         primesTo                    Example                    src/Example.hs:36:1-44                         2886       2762    0.4    0.3     1.4    1.6      1   1360448
+          primes                     Example                    src/Example.hs:(61,1)-(117,55)                 2887       2762    0.0    0.2     1.1    1.3      0   1104424
+           primes.small              Example                    src/Example.hs:63:5-24                         2888       2762    0.0    0.0     0.0    0.0      0    138848
+           primes.large              Example                    src/Example.hs:65:5-37                         2910        911    0.0    0.0     0.7    0.8      0    116608
+            primes.spin              Example                    src/Example.hs:117:5-55                        2911       6344    0.0    0.2     0.0    0.2      0    956208
+            sieve                    Example                    src/Example.hs:(40,1)-(58,53)                  2912        911    0.0    0.0     0.7    0.6      0    133936
+             sieve.sieve'            Example                    src/Example.hs:(49,5)-(52,46)                  2913       5433    0.0    0.2     0.4    0.5      0    862928
+              sieve.crossoff         Example                    src/Example.hs:43:5-68                         2922       4672    0.4    0.1     0.4    0.3      1    632696
+               insert                Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:150:1-21         2923       4672    0.0    0.1     0.0    0.2      0    566928
+                insert'              Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(169,1)-(172,59) 2924       4672    0.0    0.0     0.0    0.1      0         0
+                 incr                Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(297,1)-(300,50) 2960       3360    0.0    0.1     0.0    0.1      0    287232
+                  meld               Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(269,1)-(271,46) 2961       1592    0.0    0.0     0.0    0.0      0         0
+                 tip                 Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:265:1-28         2959       1768    0.0    0.0     0.0    0.0      0         0
+              sieve.adjust           Example                    src/Example.hs:(54,5)-(58,53)                  2948        300    0.0    0.0     0.0    0.0      0     50400
+               sieve.adjust.(...)    Example                    src/Example.hs:58:9-53                         2950        300    0.0    0.0     0.0    0.0      0         0
+                deleteFindMin        Data.PQueue.Prio.Min       Data/PQueue/Prio/Min.hs:198:1-98               2951        300    0.0    0.0     0.0    0.0      0         0
+                 minViewWithKey      Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(209,1)-(210,70) 2952        300    0.0    0.0     0.0    0.0      0         0
+                  extractHeap        Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(312,1)-(314,48) 2957        150    0.0    0.0     0.0    0.0      0      6000
+                   extractForest     Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(354,1)-(363,27) 2958        955    0.0    0.0     0.0    0.0      0     69720
+                    incrExtract      Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(345,1)-(348,54) 2963        546    0.0    0.0     0.0    0.0      0      5320
+                     incr            Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(297,1)-(300,50) 2968        305    0.0    0.0     0.0    0.0      0     28712
+                      meld           Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(269,1)-(271,46) 2969        172    0.0    0.0     0.0    0.0      0         0
+                     meld            Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(269,1)-(271,46) 2967        133    0.0    0.0     0.0    0.0      0         0
+                    extractForest.<? Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:363:5-27         2962        315    0.0    0.0     0.0    0.0      0         0
+               sieve.adjust.n        Example                    src/Example.hs:58:9-53                         2949        300    0.0    0.0     0.0    0.0      0         0
+               sieve.adjust.facts    Example                    src/Example.hs:58:9-53                         2964        150    0.0    0.0     0.0    0.0      0         0
+               sieve.adjust.table'   Example                    src/Example.hs:58:9-53                         2956        150    0.0    0.0     0.0    0.0      0         0
+               sieve.reinsert        Example                    src/Example.hs:47:5-56                         2953        150    0.0    0.0     0.0    0.0      0     14400
+                insert               Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:150:1-21         2954        150    0.0    0.0     0.0    0.0      0     18000
+                 insert'             Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(169,1)-(172,59) 2955        150    0.0    0.0     0.0    0.0      0         0
+                  incr               Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(297,1)-(300,50) 2966        111    0.0    0.0     0.0    0.0      0      6072
+                   meld              Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(269,1)-(271,46) 2970         17    0.0    0.0     0.0    0.0      0         0
+                  tip                Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:265:1-28         2965         94    0.0    0.0     0.0    0.0      0         0
+             sieve.crossoff          Example                    src/Example.hs:43:5-68                         2918        611    0.4    0.0     0.4    0.0      1     97024
+              insert                 Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:150:1-21         2919        611    0.0    0.0     0.0    0.0      0     19552
+               insert'               Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(169,1)-(172,59) 2920        611    0.0    0.0     0.0    0.0      0     24440
+                singleton            Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:145:1-31         2921        611    0.0    0.0     0.0    0.0      0         0
+             sieve.nextComposite     Example                    src/Example.hs:45:5-36                         2915          0    0.0    0.0     0.0    0.0      0         0
+              findMin                Data.PQueue.Prio.Min       Data/PQueue/Prio/Min.hs:189:1-78               2916          0    0.0    0.0     0.0    0.0      0    130392
+               getMin                Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(190,1)-(191,32) 2917       5433    0.0    0.0     0.0    0.0      0         0
+           primes.wheel2357          Example                    src/Example.hs:(67,5)-(115,11)                 2914        611    0.4    0.2     0.4    0.2      1   1105808
+        union                        Data.List.Ordered          Data/List/Ordered.hs:231:1-23                  2882       2762    0.0    0.0    94.2   95.2      0         0
+         unionBy                     Data.List.Ordered          Data/List/Ordered.hs:(235,1)-(243,34)          2883       2762    0.0    0.0    94.2   95.2      0     44192
+          unionBy.loop               Data.List.Ordered          Data/List/Ordered.hs:(237,6)-(243,34)          2884    7246750   94.2   95.2    94.2   95.2    260 463788928
+       primes                        Example                    src/Example.hs:(61,1)-(117,55)                 2879          1    0.0    0.0     2.2    2.5      0       464
+        primes.large                 Example                    src/Example.hs:65:5-37                         2889          1    0.0    0.0     2.2    2.5      0       128
+         primes.spin                 Example                    src/Example.hs:117:5-55                        2890       5717    0.0    0.2     0.0    0.2      0   1006016
+         sieve                       Example                    src/Example.hs:(40,1)-(58,53)                  2891          1    0.0    0.0     2.2    2.3      0       176
+          sieve.sieve'               Example                    src/Example.hs:(49,5)-(52,46)                  2892       5716    0.4    0.1     1.8    2.3      1    652616
+           sieve.adjust              Example                    src/Example.hs:(54,5)-(58,53)                  2925       6524    0.4    0.2     1.1    1.8      1   1120352
+            sieve.adjust.(...)       Example                    src/Example.hs:58:9-53                         2927       6524    0.0    0.0     0.4    1.3      0         0
+             deleteFindMin           Data.PQueue.Prio.Min       Data/PQueue/Prio/Min.hs:198:1-98               2928       6524    0.0    0.0     0.4    1.3      0         0
+              minViewWithKey         Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(209,1)-(210,70) 2929       6524    0.0    0.0     0.4    1.3      0         0
+               extractHeap           Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(312,1)-(314,48) 2934       3566    0.0    0.0     0.4    1.3      0    142640
+                extractForest        Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(354,1)-(363,27) 2935      42471    0.4    0.8     0.4    1.3      1   3681120
+                 incrExtract         Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(345,1)-(348,54) 2940      31818    0.0    0.1     0.0    0.5      0    477360
+                  incr               Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(297,1)-(300,50) 2945      23574    0.0    0.4     0.0    0.4      0   2060400
+                   meld              Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(269,1)-(271,46) 2946      11640    0.0    0.0     0.0    0.0      0         0
+                  meld               Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(269,1)-(271,46) 2944      11934    0.0    0.0     0.0    0.0      0         0
+                 extractForest.<?    Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:363:5-27         2939      16714    0.0    0.0     0.0    0.0      0         0
+            sieve.adjust.n           Example                    src/Example.hs:58:9-53                         2926       6524    0.0    0.0     0.0    0.0      0         0
+            sieve.adjust.facts       Example                    src/Example.hs:58:9-53                         2941       3566    0.0    0.0     0.0    0.0      0         0
+            sieve.adjust.table'      Example                    src/Example.hs:58:9-53                         2933       3566    0.0    0.0     0.0    0.0      0         0
+            sieve.reinsert           Example                    src/Example.hs:47:5-56                         2930       3566    0.0    0.1     0.4    0.3      0    339024
+             insert                  Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:150:1-21         2931       3566    0.4    0.1     0.4    0.2      1    431232
+              insert'                Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(169,1)-(172,59) 2932       3566    0.0    0.0     0.0    0.1      0         0
+               incr                  Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(297,1)-(300,50) 2943       7104    0.0    0.1     0.0    0.1      0    623904
+                meld                 Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(269,1)-(271,46) 2947       3539    0.0    0.0     0.0    0.0      0         0
+               tip                   Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:265:1-28         2942       3565    0.0    0.0     0.0    0.0      0         0
+           sieve.crossoff            Example                    src/Example.hs:43:5-68                         2907       2757    0.0    0.1     0.4    0.3      0    689872
+            insert                   Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:150:1-21         2908       2757    0.0    0.1     0.4    0.2      0    333576
+             insert'                 Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(169,1)-(172,59) 2909       2757    0.0    0.0     0.4    0.1      0         0
+              incr                   Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(297,1)-(300,50) 2937       5508    0.4    0.1     0.4    0.1      1    484416
+               meld                  Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(269,1)-(271,46) 2938       2751    0.0    0.0     0.0    0.0      0         0
+              tip                    Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:265:1-28         2936       2757    0.0    0.0     0.0    0.0      0         0
+          sieve.crossoff             Example                    src/Example.hs:43:5-68                         2902          1    0.0    0.0     0.0    0.0      0     54136
+           insert                    Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:150:1-21         2903          1    0.0    0.0     0.0    0.0      0        48
+            insert'                  Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(169,1)-(172,59) 2904          1    0.0    0.0     0.0    0.0      0        40
+             singleton               Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:145:1-31         2906          1    0.0    0.0     0.0    0.0      0         0
+          sieve.nextComposite        Example                    src/Example.hs:45:5-36                         2898          0    0.4    0.0     0.4    0.0      1        16
+           findMin                   Data.PQueue.Prio.Min       Data/PQueue/Prio/Min.hs:189:1-78               2900          0    0.0    0.0     0.0    0.0      0    137184
+            getMin                   Data.PQueue.Prio.Internals Data/PQueue/Prio/Internals.hs:(190,1)-(191,32) 2901       5716    0.0    0.0     0.0    0.0      0         0
+        primes.small                 Example                    src/Example.hs:63:5-24                         2880          1    0.0    0.0     0.0    0.0      0        64
+        primes.wheel2357             Example                    src/Example.hs:(67,5)-(115,11)                 2893          1    0.0    0.0     0.0    0.0      0      4040
+ main                                Main                       app/Main.hs:10:1-22                            2867          0    0.0    0.0     0.0    0.0      0      1288
+  run                                Main                       app/Main.hs:(13,1)-(24,17)                     2868          1    0.0    0.0     0.0    0.0      0        48
+   profile                           Main                       app/Main.hs:27:1-65                            2871          0    0.0    0.0     0.0    0.0      0        16
diff --git a/test/prof_files/unicode.prof b/test/prof_files/unicode.prof
new file mode 100644
--- /dev/null
+++ b/test/prof_files/unicode.prof
@@ -0,0 +1,219 @@
+	Sun May 24 19:22 2020 Time and Allocation Profiling Report  (Final)
+
+	   prog-exe +RTS -i0.001 -ki64k -pocountSemiprimes -s -p -RTS countSemiprimes
+
+	total time  =        0.30 secs   (301 ticks @ 1000 us, 1 processor)
+	total alloc = 504,592,280 bytes  (excludes profiling overheads)
+
+COST CENTRE                    MODULE                        SRC                                        %time %alloc
+
+unionBy.loop                   Data.List.Ordered             Data/List/Ordered.hs:(237,6)-(243,34)       71.4   91.9
+union                          Data.List.Ordered             Data/List/Ordered.hs:231:1-23               22.3    0.0
+countSemiprimes.noOfSemiprimes Example                       источники/Example.hs:(15,5)-(17,22)                1.7    1.3
+basicUnsafeWrite               Data.Vector.Primitive.Mutable Data/Vector/Primitive/Mutable.hs:124:3-69    1.3    0.5
+>>=                            Data.Vector.Fusion.Util       Data/Vector/Fusion/Util.hs:36:3-18           0.3    1.7
+
+
+                                                                                                                                                   individual      inherited
+COST CENTRE                            MODULE                            SRC                                                   no.      entries  %time %alloc   %time %alloc
+
+MAIN                                   MAIN                              <built-in>                                            1433          0    0.0    0.0   100.0  100.0
+ CAF                                   GHC.Conc.Signal                   <entire-module>                                       1547          0    0.0    0.0     0.0    0.0
+ CAF                                   GHC.IO.Encoding                   <entire-module>                                       1531          0    0.0    0.0     0.0    0.0
+ CAF                                   GHC.IO.Encoding.Iconv             <entire-module>                                       1529          0    0.0    0.0     0.0    0.0
+ CAF                                   GHC.IO.Handle.FD                  <entire-module>                                       1521          0    0.0    0.0     0.0    0.0
+ CAF                                   GHC.Event.Thread                  <entire-module>                                       1481          0    0.0    0.0     0.0    0.0
+ CAF                                   GHC.Event.Poll                    <entire-module>                                       1451          0    0.0    0.0     0.0    0.0
+ CAF:$fApplicativeBox_$cpure           Data.Vector.Fusion.Util           Data/Vector/Fusion/Util.hs:45:3-6                     2783          0    0.0    0.0     0.0    0.0
+  pure                                 Data.Vector.Fusion.Util           Data/Vector/Fusion/Util.hs:45:3-12                    3039          1    0.0    0.0     0.0    0.0
+ CAF:$fApplicativeId4                  Data.Vector.Fusion.Util           <no location info>                                    2780          0    0.0    0.0     0.0    0.0
+  pure                                 Data.Vector.Fusion.Util           Data/Vector/Fusion/Util.hs:31:3-11                    3023          1    0.0    0.0     0.0    0.0
+ CAF:$fMonadBox_$creturn               Data.Vector.Fusion.Util           Data/Vector/Fusion/Util.hs:49:3-8                     2784          0    0.0    0.0     0.0    0.0
+  return                               Data.Vector.Fusion.Util           Data/Vector/Fusion/Util.hs:49:3-15                    3038          1    0.0    0.0     0.0    0.0
+ CAF:$fMonadId1                        Data.Vector.Fusion.Util           <no location info>                                    2782          0    0.0    0.0     0.0    0.0
+  return                               Data.Vector.Fusion.Util           Data/Vector/Fusion/Util.hs:35:3-15                    3022          1    0.0    0.0     0.0    0.0
+ CAF:$fPrimMonadST1_r5gX               Control.Monad.Primitive           <no location info>                                    2209          0    0.0    0.0     0.0    0.0
+  primitive                            Control.Monad.Primitive           Control/Monad/Primitive.hs:205:3-16                   3029          1    0.0    0.0     0.0    0.0
+ CAF:doBoundsChecks                    Data.Vector.Internal.Check        Data/Vector/Internal/Check.hs:55:1-14                 2785          0    0.0    0.0     0.0    0.0
+  doBoundsChecks                       Data.Vector.Internal.Check        Data/Vector/Internal/Check.hs:55:1-21                 2883          1    0.0    0.0     0.0    0.0
+ CAF:doInternalChecks                  Data.Vector.Internal.Check        Data/Vector/Internal/Check.hs:71:1-16                 2787          0    0.0    0.0     0.0    0.0
+  doInternalChecks                     Data.Vector.Internal.Check        Data/Vector/Internal/Check.hs:71:1-24                 3009          1    0.0    0.0     0.0    0.0
+ CAF:doUnsafeChecks                    Data.Vector.Internal.Check        Data/Vector/Internal/Check.hs:64:1-14                 2786          0    0.0    0.0     0.0    0.0
+  doUnsafeChecks                       Data.Vector.Internal.Check        Data/Vector/Internal/Check.hs:64:1-22                 2887          1    0.0    0.0     0.0    0.0
+ CAF:empty                             Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:131:1-5                 1596          0    0.0    0.0     0.0    0.0
+  empty                                Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:131:1-13                2961          1    0.0    0.0     0.0    0.0
+ CAF:findMin                           Data.PQueue.Prio.Min              Data/PQueue/Prio/Min.hs:189:1-7                       1628          0    0.0    0.0     0.0    0.0
+  findMin                              Data.PQueue.Prio.Min              Data/PQueue/Prio/Min.hs:189:1-78                      2955          1    0.0    0.0     0.0    0.0
+ CAF:lvl60_rful                        Example                           <no location info>                                    2820          0    0.0    0.0     0.0    0.0
+  countSemiprimes                      Example                           источники/Example.hs:(12,1)-(17,22)                   2891          0    0.0    0.0     0.0    0.0
+   countSemiprimes.noOfSemiprimes      Example                           источники/Example.hs:(15,5)-(17,22)                   2892          0    0.0    0.0     0.0    0.0
+    isNSemiprime                       Example                           источники/Example.hs:(20,1)-(25,25)                   2893          0    0.0    0.0     0.0    0.0
+     basicUnsafeNew                    Data.Vector.Unboxed.Base          Data/Vector/Unboxed/Base.hs:354:3-55                  2894          0    0.0    0.0     0.0    0.0
+      basicUnsafeNew                   Data.Vector.Primitive.Mutable     Data/Vector/Primitive/Mutable.hs:(105,3)-(111,37)     2895          0    0.0    0.0     0.0    0.0
+       basicUnsafeNew.mx               Data.Vector.Primitive.Mutable     Data/Vector/Primitive/Mutable.hs:111:7-37             2896          0    0.0    0.0     0.0    0.0
+ CAF:main1                             Main                              <no location info>                                    2864          0    0.0    0.0     0.0    0.0
+  main                                 Main                              app/Main.hs:10:1-22                                   2866          1    0.0    0.0     0.0    0.0
+ CAF:nextComposite_rfu0                Example                           источники/Example.hs:45:5-17                          2811          0    0.0    0.0     0.0    0.0
+  primes                               Example                           источники/Example.hs:(61,1)-(117,55)                  2950          0    0.0    0.0     0.0    0.0
+   primes.large                        Example                           источники/Example.hs:65:5-37                          2951          0    0.0    0.0     0.0    0.0
+    sieve                              Example                           источники/Example.hs:(40,1)-(58,53)                   2952          0    0.0    0.0     0.0    0.0
+     sieve.nextComposite               Example                           источники/Example.hs:45:5-36                          2953          1    0.0    0.0     0.0    0.0
+ CAF:primesTo10                        Example                           <no location info>                                    2810          0    0.0    0.0     0.0    0.1
+  primes                               Example                           источники/Example.hs:(61,1)-(117,55)                  2942          0    0.0    0.0     0.0    0.1
+   primes.large                        Example                           источники/Example.hs:65:5-37                          2943          0    0.0    0.0     0.0    0.1
+    primes.spin                        Example                           источники/Example.hs:117:5-55                         2944       5717    0.0    0.1     0.0    0.1
+ CAF:primesTo8                         Example                           <no location info>                                    2814          0    0.0    0.0     1.0    1.9
+  primes                               Example                           источники/Example.hs:(61,1)-(117,55)                  2939          0    0.0    0.0     1.0    1.9
+   primes.large                        Example                           источники/Example.hs:65:5-37                          2940          0    0.0    0.0     1.0    1.9
+    sieve                              Example                           источники/Example.hs:(40,1)-(58,53)                   2941          1    0.0    0.0     1.0    1.9
+     sieve.sieve'                      Example                           источники/Example.hs:(49,5)-(52,46)                   2945       5716    0.0    0.1     1.0    1.9
+      sieve.adjust                     Example                           источники/Example.hs:(54,5)-(58,53)                   2966       6524    0.3    0.0     0.7    1.5
+       sieve.adjust.(...)              Example                           источники/Example.hs:58:9-53                          2968       6524    0.0    0.0     0.3    1.3
+        deleteFindMin                  Data.PQueue.Prio.Min              Data/PQueue/Prio/Min.hs:198:1-98                      2969       6524    0.0    0.0     0.3    1.3
+         minViewWithKey                Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:(209,1)-(210,70)        2970       6524    0.0    0.0     0.3    1.3
+          extractHeap                  Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:(312,1)-(314,48)        2975       3566    0.0    0.0     0.3    1.3
+           extractForest               Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:(354,1)-(363,27)        2976      42471    0.3    0.7     0.3    1.2
+            incrExtract                Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:(345,1)-(348,54)        2986      31818    0.0    0.1     0.0    0.5
+             incr                      Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:(297,1)-(300,50)        2991      23574    0.0    0.4     0.0    0.4
+              meld                     Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:(269,1)-(271,46)        2992      11640    0.0    0.0     0.0    0.0
+             meld                      Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:(269,1)-(271,46)        2990      11934    0.0    0.0     0.0    0.0
+            extractForest.<?           Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:363:5-27                2985      16714    0.0    0.0     0.0    0.0
+       sieve.adjust.n                  Example                           источники/Example.hs:58:9-53                          2967       6524    0.0    0.0     0.0    0.0
+       sieve.adjust.facts              Example                           источники/Example.hs:58:9-53                          2987       3566    0.0    0.0     0.0    0.0
+       sieve.adjust.table'             Example                           источники/Example.hs:58:9-53                          2974       3566    0.0    0.0     0.0    0.0
+       sieve.reinsert                  Example                           источники/Example.hs:47:5-56                          2971       3566    0.0    0.0     0.0    0.2
+        insert                         Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:150:1-21                2972       3566    0.0    0.1     0.0    0.2
+         insert'                       Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:(169,1)-(172,59)        2973       3566    0.0    0.0     0.0    0.1
+          incr                         Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:(297,1)-(300,50)        2989       7104    0.0    0.1     0.0    0.1
+           meld                        Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:(269,1)-(271,46)        2993       3539    0.0    0.0     0.0    0.0
+          tip                          Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:265:1-28                2988       3565    0.0    0.0     0.0    0.0
+      sieve.crossoff                   Example                           источники/Example.hs:43:5-68                          2963       2757    0.0    0.1     0.3    0.3
+       insert                          Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:150:1-21                2964       2757    0.3    0.0     0.3    0.1
+        insert'                        Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:(169,1)-(172,59)        2965       2757    0.0    0.0     0.0    0.1
+         incr                          Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:(297,1)-(300,50)        2978       5508    0.0    0.1     0.0    0.1
+          meld                         Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:(269,1)-(271,46)        2979       2751    0.0    0.0     0.0    0.0
+         tip                           Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:265:1-28                2977       2757    0.0    0.0     0.0    0.0
+     sieve.crossoff                    Example                           источники/Example.hs:43:5-68                          2958          1    0.0    0.0     0.0    0.0
+      insert                           Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:150:1-21                2959          1    0.0    0.0     0.0    0.0
+       insert'                         Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:(169,1)-(172,59)        2960          1    0.0    0.0     0.0    0.0
+        singleton                      Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:145:1-31                2962          1    0.0    0.0     0.0    0.0
+     sieve.nextComposite               Example                           источники/Example.hs:45:5-36                          2954          0    0.0    0.0     0.0    0.0
+      findMin                          Data.PQueue.Prio.Min              Data/PQueue/Prio/Min.hs:189:1-78                      2956          0    0.0    0.0     0.0    0.0
+       getMin                          Data.PQueue.Prio.Internals        Data/PQueue/Prio/Internals.hs:(190,1)-(191,32)        2957       5716    0.0    0.0     0.0    0.0
+ CAF:primesTo_$sprimes                 Example                           источники/Example.hs:61:1-6                           2815          0    0.0    0.0     0.0    0.0
+  primes                               Example                           источники/Example.hs:(61,1)-(117,55)                  2922          1    0.0    0.0     0.0    0.0
+   primes.large                        Example                           источники/Example.hs:65:5-37                          2938          1    0.0    0.0     0.0    0.0
+   primes.small                        Example                           источники/Example.hs:63:5-24                          2923          1    0.0    0.0     0.0    0.0
+ CAF:primesTo_wheel2357                Example                           источники/Example.hs:67:5-13                          2809          0    0.0    0.0     0.0    0.0
+  primes                               Example                           источники/Example.hs:(61,1)-(117,55)                  2946          0    0.0    0.0     0.0    0.0
+   primes.wheel2357                    Example                           источники/Example.hs:(67,5)-(115,11)                  2947          1    0.0    0.0     0.0    0.0
+ CAF:primesTo_xs'                      Example                           <no location info>                                    2808          0    0.0    0.0     0.0    0.0
+  primes                               Example                           источники/Example.hs:(61,1)-(117,55)                  2948          0    0.0    0.0     0.0    0.0
+   primes.wheel2357                    Example                           источники/Example.hs:(67,5)-(115,11)                  2949          0    0.0    0.0     0.0    0.0
+ CAF:run1                              Main                              <no location info>                                    2861          0    0.0    0.0     0.0    0.0
+  run                                  Main                              app/Main.hs:(13,1)-(24,17)                            2869          0    0.0    0.0     0.0    0.0
+   profile                             Main                              app/Main.hs:27:1-65                                   2870          1    0.0    0.0     0.0    0.0
+ CAF:run2                              Main                              <no location info>                                    2860          0    0.0    0.0     0.0    0.0
+  run                                  Main                              app/Main.hs:(13,1)-(24,17)                            2872          0    0.0    0.0     0.0    0.0
+   profile                             Main                              app/Main.hs:27:1-65                                   2873          0    0.0    0.0     0.0    0.0
+ CAF:run32                             Main                              <no location info>                                    2858          0    0.0    0.0     5.3    5.4
+  run                                  Main                              app/Main.hs:(13,1)-(24,17)                            2877          0    0.0    0.0     5.3    5.4
+   countSemiprimes                     Example                           источники/Example.hs:(12,1)-(17,22)                   2880          1    0.0    0.0     5.3    5.4
+    countSemiprimes.noOfSemiprimes     Example                           источники/Example.hs:(15,5)-(17,22)                   2885          1    1.7    1.3     5.3    5.4
+     >>=                               Data.Vector.Fusion.Util           Data/Vector/Fusion/Util.hs:36:3-18                    3021     200011    0.3    1.7     2.7    2.8
+      fmap                             Data.Vector.Fusion.Stream.Monadic Data/Vector/Fusion/Stream/Monadic.hs:(133,3)-(135,20) 3024      50004    0.7    0.6     2.3    1.0
+       basicUnsafeWrite                Data.Vector.Unboxed.Base          Data/Vector/Unboxed/Base.hs:241:1480-1538             3025      50002    0.0    0.0     1.7    0.4
+        basicUnsafeWrite               Data.Vector.Primitive.Mutable     Data/Vector/Primitive/Mutable.hs:124:3-69             3026      50002    1.3    0.4     1.7    0.4
+         primitive                     Control.Monad.Primitive           Control/Monad/Primitive.hs:205:3-16                   3030          0    0.3    0.0     0.3    0.0
+          writeByteArray#              Data.Primitive.Types              Data/Primitive/Types.hs:263:433-499                   3031      50002    0.0    0.0     0.0    0.0
+      countSemiprimes.noOfSemiprimes.λ Example                           источники/Example.hs:16:40-64                         3041      50001    0.0    0.0     0.0    0.0
+     unId                              Data.Vector.Fusion.Util           Data/Vector/Fusion/Util.hs:25:21-24                   3020      50004    0.0    0.0     0.0    0.0
+     basicUnsafeSlice                  Data.Vector.Unboxed.Base          Data/Vector/Unboxed/Base.hs:241:1016-1084             3027      50003    0.0    0.0     0.0    0.3
+      basicUnsafeSlice                 Data.Vector.Primitive.Mutable     Data/Vector/Primitive/Mutable.hs:(94,3)-(95,25)       3028      50003    0.0    0.3     0.0    0.3
+     basicUnsafeIndexM                 Data.Vector.Unboxed.Base          Data/Vector/Unboxed/Base.hs:376:3-73                  3035      50001    0.0    0.0     1.0    0.7
+      >>=                              Data.Vector.Fusion.Util           Data/Vector/Fusion/Util.hs:50:3-19                    3040      50001    0.7    0.4     0.7    0.4
+      basicUnsafeIndexM                Data.Vector.Primitive             Data/Vector/Primitive.hs:234:3-75                     3036      50001    0.3    0.3     0.3    0.3
+       indexByteArray#                 Data.Primitive.Types              Data/Primitive/Types.hs:251:220-288                   3037      50001    0.0    0.0     0.0    0.0
+     +                                 Data.Vector.Fusion.Bundle.Size    Data/Vector/Fusion/Bundle/Size.hs:(26,3)-(32,29)      3008          1    0.0    0.0     0.0    0.0
+     basicLength                       Data.Vector.Unboxed.Base          Data/Vector/Unboxed/Base.hs:374:3-42                  3004          1    0.0    0.0     0.0    0.0
+      basicLength                      Data.Vector.Primitive             Data/Vector/Primitive.hs:228:3-32                     3005          1    0.0    0.0     0.0    0.0
+     basicUnsafeFreeze                 Data.Vector.Unboxed.Base          Data/Vector/Unboxed/Base.hs:242:508-575               3050          1    0.0    0.0     0.0    0.0
+      basicUnsafeFreeze                Data.Vector.Primitive             Data/Vector/Primitive.hs:(220,3)-(221,51)             3051          1    0.0    0.0     0.0    0.0
+       primitive                       Control.Monad.Primitive           Control/Monad/Primitive.hs:205:3-16                   3052          1    0.0    0.0     0.0    0.0
+     basicUnsafeNew                    Data.Vector.Unboxed.Base          Data/Vector/Unboxed/Base.hs:241:1176-1228             3010          1    0.0    0.0     0.0    0.1
+      basicUnsafeNew                   Data.Vector.Primitive.Mutable     Data/Vector/Primitive/Mutable.hs:(105,3)-(111,37)     3011          1    0.0    0.0     0.0    0.1
+       basicUnsafeNew.mx               Data.Vector.Primitive.Mutable     Data/Vector/Primitive/Mutable.hs:111:7-37             3012          1    0.0    0.0     0.0    0.0
+       basicUnsafeNew.size             Data.Vector.Primitive.Mutable     Data/Vector/Primitive/Mutable.hs:110:7-36             3013          1    0.0    0.0     0.0    0.0
+        sizeOf                         Data.Primitive.Types              Data/Primitive/Types.hs:131:1-25                      3014          1    0.0    0.0     0.0    0.0
+         sizeOf#                       Data.Primitive.Types              Data/Primitive/Types.hs:263:68-95                     3015          1    0.0    0.0     0.0    0.0
+          unI#                         Data.Primitive.Types              Data/Primitive/Types.hs:246:1-17                      3016          1    0.0    0.0     0.0    0.0
+       primitive                       Control.Monad.Primitive           Control/Monad/Primitive.hs:205:3-16                   3018          1    0.0    0.1     0.0    0.1
+     isNSemiprime                      Example                           источники/Example.hs:(20,1)-(25,25)                   2886          1    0.0    0.0     0.0    0.2
+      isNSemiprime.λ                   Example                           источники/Example.hs:24:30-57                         2925      12110    0.0    0.0     0.0    0.1
+       basicUnsafeWrite                Data.Vector.Unboxed.Base          Data/Vector/Unboxed/Base.hs:358:3-72                  2926      12110    0.0    0.0     0.0    0.1
+        basicUnsafeWrite               Data.Vector.Primitive.Mutable     Data/Vector/Primitive/Mutable.hs:124:3-69             2927      12110    0.0    0.1     0.0    0.1
+         primitive                     Control.Monad.Primitive           Control/Monad/Primitive.hs:205:3-16                   2928      12110    0.0    0.0     0.0    0.0
+          writeByteArray#              Data.Primitive.Types              Data/Primitive/Types.hs:251:445-514                   2929      12110    0.0    0.0     0.0    0.0
+      basicInitialize                  Data.Vector.Unboxed.Base          Data/Vector/Unboxed/Base.hs:355:3-51                  2908          1    0.0    0.0     0.0    0.0
+       basicInitialize                 Data.Vector.Primitive.Mutable     Data/Vector/Primitive/Mutable.hs:(114,3)-(117,36)     2909          1    0.0    0.0     0.0    0.0
+        basicInitialize.size           Data.Vector.Primitive.Mutable     Data/Vector/Primitive/Mutable.hs:117:7-36             2910          1    0.0    0.0     0.0    0.0
+         sizeOf                        Data.Primitive.Types              Data/Primitive/Types.hs:131:1-25                      2911          1    0.0    0.0     0.0    0.0
+          sizeOf#                      Data.Primitive.Types              Data/Primitive/Types.hs:251:70-99                     2912          1    0.0    0.0     0.0    0.0
+           unI#                        Data.Primitive.Types              Data/Primitive/Types.hs:246:1-17                      2913          1    0.0    0.0     0.0    0.0
+        primitive                      Control.Monad.Primitive           Control/Monad/Primitive.hs:205:3-16                   2914          1    0.0    0.0     0.0    0.0
+         setByteArray#                 Data.Primitive.Types              Data/Primitive/Types.hs:251:521-878                   2915          1    0.0    0.0     0.0    0.0
+          internal                     Control.Monad.Primitive           Control/Monad/Primitive.hs:96:3-21                    2916          1    0.0    0.0     0.0    0.0
+          setByteArray#.i              Data.Primitive.Types              Data/Primitive/Types.hs:251:596-619                   2917          1    0.0    0.0     0.0    0.0
+          setByteArray#.n              Data.Primitive.Types              Data/Primitive/Types.hs:251:660-683                   2918          1    0.0    0.0     0.0    0.0
+      basicUnsafeFreeze                Data.Vector.Unboxed.Base          Data/Vector/Unboxed/Base.hs:372:3-70                  3001          1    0.0    0.0     0.0    0.0
+       basicUnsafeFreeze               Data.Vector.Primitive             Data/Vector/Primitive.hs:(220,3)-(221,51)             3002          1    0.0    0.0     0.0    0.0
+        primitive                      Control.Monad.Primitive           Control/Monad/Primitive.hs:205:3-16                   3003          1    0.0    0.0     0.0    0.0
+      basicUnsafeNew                   Data.Vector.Unboxed.Base          Data/Vector/Unboxed/Base.hs:354:3-55                  2888          1    0.0    0.0     0.0    0.0
+       basicUnsafeNew                  Data.Vector.Primitive.Mutable     Data/Vector/Primitive/Mutable.hs:(105,3)-(111,37)     2889          1    0.0    0.0     0.0    0.0
+        basicUnsafeNew.mx              Data.Vector.Primitive.Mutable     Data/Vector/Primitive/Mutable.hs:111:7-37             2890          1    0.0    0.0     0.0    0.0
+        primitive                      Control.Monad.Primitive           Control/Monad/Primitive.hs:205:3-16                   2907          1    0.0    0.0     0.0    0.0
+      isNSemiprime.nSemiprimes         Example                           источники/Example.hs:23:9-40                          2919          1    0.0    0.0     0.0    0.1
+       semiprimesTo                    Example                           источники/Example.hs:28:1-52                          2920          1    0.0    0.1     0.0    0.1
+     sChunks                           Data.Vector.Fusion.Bundle.Monadic Data/Vector/Fusion/Bundle/Monadic.hs:122:30-36        3019          1    0.0    0.0     0.0    0.0
+     sSize                             Data.Vector.Fusion.Bundle.Monadic Data/Vector/Fusion/Bundle/Monadic.hs:124:30-34        3007          1    0.0    0.0     0.0    0.0
+     upperBound                        Data.Vector.Fusion.Bundle.Size    Data/Vector/Fusion/Bundle/Size.hs:(126,1)-(128,30)    3006          1    0.0    0.0     0.0    0.0
+   profile                             Main                              app/Main.hs:27:1-65                                   2878          0    0.0    0.0     0.0    0.0
+    program                            Main                              app/Main.hs:27:63-65                                  2879          0    0.0    0.0     0.0    0.0
+ CAF:run37                             Main                              <no location info>                                    2862          0    0.0    0.0     0.0    0.0
+ CAF:run_x                             Main                              <no location info>                                    2859          0    0.0    0.0     0.0    0.0
+  run                                  Main                              app/Main.hs:(13,1)-(24,17)                            2874          0    0.0    0.0     0.0    0.0
+   countSemiprimes                     Example                           источники/Example.hs:(12,1)-(17,22)                   2881          0    0.0    0.0     0.0    0.0
+    countSemiprimes.λ                  Example                           источники/Example.hs:13:23-67                         2882          9    0.0    0.0     0.0    0.0
+     unId                              Data.Vector.Fusion.Util           Data/Vector/Fusion/Util.hs:25:21-24                   2884         36    0.0    0.0     0.0    0.0
+     basicLength                       Data.Vector.Unboxed.Base          Data/Vector/Unboxed/Base.hs:242:664-703               3053         18    0.0    0.0     0.0    0.0
+      basicLength                      Data.Vector.Primitive             Data/Vector/Primitive.hs:228:3-32                     3054         18    0.0    0.0     0.0    0.0
+     basicUnsafeIndexM                 Data.Vector.Unboxed.Base          Data/Vector/Unboxed/Base.hs:242:817-872               3055         18    0.0    0.0     0.0    0.0
+      basicUnsafeIndexM                Data.Vector.Primitive             Data/Vector/Primitive.hs:234:3-75                     3056         18    0.0    0.0     0.0    0.0
+       indexByteArray#                 Data.Primitive.Types              Data/Primitive/Types.hs:263:214-279                   3057         18    0.0    0.0     0.0    0.0
+   profile                             Main                              app/Main.hs:27:1-65                                   2875          0    0.0    0.0     0.0    0.0
+    program                            Main                              app/Main.hs:27:63-65                                  2876          1    0.0    0.0     0.0    0.0
+ CAF:sIZEOF_INT                        Data.Primitive.MachDeps           Data/Primitive/MachDeps.hs:71:1-10                    2178          0    0.0    0.0     0.0    0.0
+  sIZEOF_INT                           Data.Primitive.MachDeps           Data/Primitive/MachDeps.hs:71:1-14                    3017          1    0.0    0.0     0.0    0.0
+ CAF:sIZEOF_WORD8                      Data.Primitive.MachDeps           Data/Primitive/MachDeps.hs:95:1-12                    2194          0    0.0    0.0     0.0    0.0
+  sIZEOF_WORD8                         Data.Primitive.MachDeps           Data/Primitive/MachDeps.hs:95:1-16                    2906          1    0.0    0.0     0.0    0.0
+ CAF:semiprimes_$ssemiprimes           Example                           источники/Example.hs:31:1-10                          2817          0    0.0    0.0    93.7   92.5
+  semiprimes                           Example                           источники/Example.hs:(31,1)-(33,51)                   2921          1    0.0    0.1    93.7   92.5
+   semiprimes.λ                        Example                           источники/Example.hs:31:29-58                         2924       2763    0.0    0.0    93.7   92.4
+    semiprimes.facts                   Example                           источники/Example.hs:33:5-51                          2933       2762    0.0    0.3     0.0    0.5
+     primesTo                          Example                           источники/Example.hs:36:1-44                          2934       2762    0.0    0.2     0.0    0.2
+    union                              Data.List.Ordered                 Data/List/Ordered.hs:231:1-23                         2930       2762   22.3    0.0    93.7   91.9
+     unionBy                           Data.List.Ordered                 Data/List/Ordered.hs:(235,1)-(243,34)                 2931       2762    0.0    0.0    71.4   91.9
+      unionBy.loop                     Data.List.Ordered                 Data/List/Ordered.hs:(237,6)-(243,34)                 2932    7246750   71.4   91.9    71.4   91.9
+ CAF:size48_rfui                       Example                           <no location info>                                    2819          0    0.0    0.0     0.0    0.0
+  countSemiprimes                      Example                           источники/Example.hs:(12,1)-(17,22)                   2897          0    0.0    0.0     0.0    0.0
+   countSemiprimes.noOfSemiprimes      Example                           источники/Example.hs:(15,5)-(17,22)                   2898          0    0.0    0.0     0.0    0.0
+    isNSemiprime                       Example                           источники/Example.hs:(20,1)-(25,25)                   2899          0    0.0    0.0     0.0    0.0
+     basicUnsafeNew                    Data.Vector.Unboxed.Base          Data/Vector/Unboxed/Base.hs:354:3-55                  2900          0    0.0    0.0     0.0    0.0
+      basicUnsafeNew                   Data.Vector.Primitive.Mutable     Data/Vector/Primitive/Mutable.hs:(105,3)-(111,37)     2901          0    0.0    0.0     0.0    0.0
+       basicUnsafeNew.size             Data.Vector.Primitive.Mutable     Data/Vector/Primitive/Mutable.hs:110:7-36             2902          1    0.0    0.0     0.0    0.0
+        sizeOf                         Data.Primitive.Types              Data/Primitive/Types.hs:131:1-25                      2903          1    0.0    0.0     0.0    0.0
+         sizeOf#                       Data.Primitive.Types              Data/Primitive/Types.hs:251:70-99                     2904          1    0.0    0.0     0.0    0.0
+          unI#                         Data.Primitive.Types              Data/Primitive/Types.hs:246:1-17                      2905          1    0.0    0.0     0.0    0.0
+ main                                  Main                              app/Main.hs:10:1-22                                   2867          0    0.0    0.0     0.0    0.0
+  run                                  Main                              app/Main.hs:(13,1)-(24,17)                            2868          1    0.0    0.0     0.0    0.0
+   profile                             Main                              app/Main.hs:27:1-65                                   2871          0    0.0    0.0     0.0    0.0
