remove optimin

11 files changed, 3 insertions, 979 deletions

diff --git a/.gitmodules b/.gitmodules
index 8ba1c39d..18fda27e 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -10,9 +10,6 @@
 [submodule "custom_mutators/gramatron/json-c"]
 	path = custom_mutators/gramatron/json-c
 	url = https://github.com/json-c/json-c
-[submodule "utils/optimin/EvalMaxSAT"]
-	path = utils/optimin/EvalMaxSAT
-	url = https://github.com/FlorentAvellaneda/EvalMaxSAT
 [submodule "coresight_mode/patchelf"]
 	path = coresight_mode/patchelf
 	url = https://github.com/NixOS/patchelf.git
diff --git a/docs/Changelog.md b/docs/Changelog.md
index b18bf30f..6269e3b1 100644
--- a/docs/Changelog.md
+++ b/docs/Changelog.md
@@ -41,6 +41,9 @@ sending a mail to <afl-users+subscribe@googlegroups.com>.
     - update to new frida release, handles now c++ throw/catch
   - unicorn_mode:
     - update unicorn engine, fix C example
+  - utils:
+    - removed optimin because it looses coverage due a bug and is
+      unmaintained :-(
 
 
 ### Version ++4.00c (release)
diff --git a/utils/README.md b/utils/README.md
index debc86e8..62d79193 100644
--- a/utils/README.md
+++ b/utils/README.md
@@ -56,8 +56,6 @@ Here's a quick overview of the stuff you can find in this directory:
 
   - libpng_no_checksum   - a sample patch for removing CRC checks in libpng.
 
-  - optimin              - An optimal corpus minimizer.
-
   - persistent_mode      - an example of how to use the LLVM persistent process
                            mode to speed up certain fuzzing jobs.
 
diff --git a/utils/optimin/.gitignore b/utils/optimin/.gitignore
deleted file mode 100644
index 46f42f8f..00000000
--- a/utils/optimin/.gitignore
+++ /dev/null
@@ -1,11 +0,0 @@
-CMakeLists.txt.user
-CMakeCache.txt
-CMakeFiles
-CMakeScripts
-Testing
-Makefile
-cmake_install.cmake
-install_manifest.txt
-compile_commands.json
-CTestTestfile.cmake
-_deps
diff --git a/utils/optimin/CMakeLists.txt b/utils/optimin/CMakeLists.txt
deleted file mode 100644
index b45dd004..00000000
--- a/utils/optimin/CMakeLists.txt
+++ /dev/null
@@ -1,22 +0,0 @@
-cmake_minimum_required(VERSION 3.10)
-
-project(optimin
-    LANGUAGES CXX
-    DESCRIPTION "MaxSAT-based fuzzing corpus minimizer"
-)
-
-set(CMAKE_CXX_STANDARD 17)
-set(CMAKE_CXX_STANDARD_REQUIRED ON)
-set(CMAKE_CXX_EXTENSIONS OFF)
-
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra")
-
-# Add LLVM
-find_package(LLVM REQUIRED CONFIG)
-message(STATUS "Found LLVM ${LLVM_PACKAGE_VERSION}")
-
-include_directories(${LLVM_INCLUDE_DIRS})
-add_definitions(${LLVM_DEFINITIONS} -DNDEBUG)
-
-add_subdirectory(EvalMaxSAT)
-add_subdirectory(src)
diff --git a/utils/optimin/EVALMAXSAT_VERSION b/utils/optimin/EVALMAXSAT_VERSION
deleted file mode 100644
index d836ff1c..00000000
--- a/utils/optimin/EVALMAXSAT_VERSION
+++ /dev/null
@@ -1 +0,0 @@
-440bf90edf88f6ab940934129e3c5b3b93764295
diff --git a/utils/optimin/EvalMaxSAT b/utils/optimin/EvalMaxSAT
deleted file mode 160000
-Subproject 440bf90edf88f6ab940934129e3c5b3b9376429
diff --git a/utils/optimin/README.md b/utils/optimin/README.md
deleted file mode 100644
index 340022b8..00000000
--- a/utils/optimin/README.md
+++ /dev/null
@@ -1,94 +0,0 @@
-# OptiMin
-
-OptiMin is a corpus minimizer that uses a
-[MaxSAT](https://en.wikipedia.org/wiki/Maximum_satisfiability_problem) solver
-to identify a subset of functionally distinct files that exercise different code
-paths in a target program.
-
-Unlike most corpus minimizers, such as `afl-cmin`, OptiMin does not rely on
-heuristic and/or greedy algorithms to identify these functionally distinct
-files. This means that minimized corpora are generally much smaller than those
-produced by other tools.
-
-## Building
-
-To build the `optimin` just execute the `build_optimin.sh` script.
-
-## Running
-
-Running `optimin` is the same as running `afl-cmin`:
-
-```
-./optimin -h
-OVERVIEW: Optimal corpus minimizer
-USAGE: optimin [options] <target program> [target args...]
-
-OPTIONS:
-
-Color Options:
-
-  --color     - Use colors in output (default=autodetect)
-
-General options:
-
-  -C          - Keep crashing inputs, reject everything else
-  -O          - Use binary-only instrumentation (FRIDA mode)
-  -Q          - Use binary-only instrumentation (QEMU mode)
-  -U          - Use unicorn-based instrumentation (unicorn mode)
-  -f          - Include edge hit counts
-  -i dir      - Input directory
-  -m megs     - Memory limit for child process (default=none)
-  -o dir      - Output directory
-  -p          - Display progress bar
-  -t msec     - Run time limit for child process (default=5000)
-  -w csv      - Weights file
-
-Generic Options:
-
-  --help      - Display available options (--help-hidden for more)
-  --help-list - Display list of available options (--help-list-hidden for more)
-  --version   - Display the version of this program
-```
-
-Example: `optimin -i files -o seeds -- ./target @@`
-
-### Weighted Minimizations
-
-OptiMin allows for weighted minimizations. For examples, seeds can be weighted
-by file size (or execution time), thus preferencing the selection of smaller (or
-faster) seeds.
-
-To perform a weighted minimization, supply a CSV file with the `-w` option. This
-CSV file is formatted as follows:
-
-```
-SEED_1,WEIGHT_1
-SEED_2,WEIGHT_2
-...
-SEED_N,WEIGHT_N
-```
-
-Where `SEED_N` is the file name (**not** path) of a seed in the input directory,
-and `WEIGHT_N` is an integer weight.
-
-## Further Details and Citation
-
-For more details, see the paper
-[Seed Selection for Successful Fuzzing](https://dl.acm.org/doi/10.1145/3460319.3464795).
-If you use OptiMin in your research, please cite this paper.
-
-BibTeX:
-
-```bibtex
-@inproceedings{Herrera:2021:FuzzSeedSelection,
-  author = {Adrian Herrera and Hendra Gunadi and Shane Magrath and Michael Norrish and Mathias Payer and Antony L. Hosking},
-  title = {Seed Selection for Successful Fuzzing},
-  booktitle = {30th ACM SIGSOFT International Symposium on Software Testing and Analysis},
-  series = {ISSTA},
-  year = {2021},
-  pages = {230--243},
-  numpages = {14},
-  location = {Virtual, Denmark},
-  publisher = {Association for Computing Machinery},
-}
-```
\ No newline at end of file
diff --git a/utils/optimin/build_optimin.sh b/utils/optimin/build_optimin.sh
deleted file mode 100755
index aee5d0c3..00000000
--- a/utils/optimin/build_optimin.sh
+++ /dev/null
@@ -1,131 +0,0 @@
-#!/bin/sh
-#
-# american fuzzy lop++ - optimin build script
-# ------------------------------------------------
-#
-# Originally written by Nathan Voss <njvoss99@gmail.com>
-#
-# Adapted from code by Andrew Griffiths <agriffiths@google.com> and
-#                      Michal Zalewski
-#
-# Adapted for AFLplusplus by Dominik Maier <mail@dmnk.co>
-#
-# Copyright 2017 Battelle Memorial Institute. All rights reserved.
-# Copyright 2019-2022 AFLplusplus Project. All rights reserved.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at:
-#
-#   http://www.apache.org/licenses/LICENSE-2.0
-#
-# This script builds the OptiMin corpus minimizer.
-
-EVALMAXSAT_VERSION="$(cat ./EVALMAXSAT_VERSION)"
-EVALMAXSAT_REPO="https://github.com/FlorentAvellaneda/EvalMaxSAT"
-
-echo "================================================="
-echo "OptiMin build script"
-echo "================================================="
-echo
-
-echo "[*] Performing basic sanity checks..."
-
-PLT=`uname -s`
-
-if [ ! -f "../../config.h" ]; then
-
-  echo "[-] Error: key files not found - wrong working directory?"
-  exit 1
-
-fi
-
-LLVM_CONFIG="${LLVM_CONFIG:-llvm-config}"
-CMAKECMD=cmake
-MAKECMD=make
-TARCMD=tar
-
-if [ "$PLT" = "Darwin" ]; then
-  CORES=`sysctl -n hw.ncpu`
-  TARCMD=tar
-fi
-
-if [ "$PLT" = "FreeBSD" ]; then
-  MAKECMD=gmake
-  CORES=`sysctl -n hw.ncpu`
-  TARCMD=gtar
-fi
-
-if [ "$PLT" = "NetBSD" ] || [ "$PLT" = "OpenBSD" ]; then
-  MAKECMD=gmake
-  CORES=`sysctl -n hw.ncpu`
-  TARCMD=gtar
-fi
-
-PREREQ_NOTFOUND=
-for i in git $CMAKECMD $MAKECMD $TARCMD; do
-
-  T=`command -v "$i" 2>/dev/null`
-
-  if [ "$T" = "" ]; then
-
-    echo "[-] Error: '$i' not found. Run 'sudo apt-get install $i' or similar."
-    PREREQ_NOTFOUND=1
-
-  fi
-
-done
-
-if echo "$CC" | grep -qF /afl-; then
-
-  echo "[-] Error: do not use afl-gcc or afl-clang to compile this tool."
-  PREREQ_NOTFOUND=1
-
-fi
-
-if [ "$PREREQ_NOTFOUND" = "1" ]; then
-  exit 1
-fi
-
-echo "[+] All checks passed!"
-
-echo "[*] Making sure EvalMaxSAT is checked out"
-
-git status 1>/dev/null 2>/dev/null
-if [ $? -eq 0 ]; then
-  echo "[*] initializing EvalMaxSAT submodule"
-  git submodule init || exit 1
-  git submodule update ./EvalMaxSAT 2>/dev/null # ignore errors
-else
-  echo "[*] cloning EvalMaxSAT"
-  test -d EvalMaxSAT || {
-    CNT=1
-    while [ '!' -d EvalMaxSAT -a "$CNT" -lt 4 ]; do
-      echo "Trying to clone EvalMaxSAT (attempt $CNT/3)"
-      git clone "$EVALMAXSAT_REPO"
-      CNT=`expr "$CNT" + 1`
-    done
-  }
-fi
-
-test -d EvalMaxSAT || { echo "[-] not checked out, please install git or check your internet connection." ; exit 1 ; }
-echo "[+] Got EvalMaxSAT."
-
-cd "EvalMaxSAT" || exit 1
-echo "[*] Checking out $EVALMAXSAT_VERSION"
-sh -c 'git stash && git stash drop' 1>/dev/null 2>/dev/null
-git checkout "$EVALMAXSAT_VERSION" || exit 1
-cd ..
-
-echo
-echo
-echo "[+] EvalMaxSAT successfully prepared!"
-echo "[+] Building OptiMin now."
-mkdir -p build
-cd build || exit 1
-cmake .. -DLLVM_DIR=`$LLVM_CONFIG --cmakedir` || exit 1
-make -j$CORES || exit 1
-cd ..
-echo
-cp -fv build/src/optimin . || exit 1
-echo "[+] OptiMin successfully built!"
diff --git a/utils/optimin/src/CMakeLists.txt b/utils/optimin/src/CMakeLists.txt
deleted file mode 100644
index 693f63f2..00000000
--- a/utils/optimin/src/CMakeLists.txt
+++ /dev/null
@@ -1,13 +0,0 @@
-add_executable(optimin OptiMin.cpp)
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-rtti")
-
-foreach(LIB MaLib EvalMaxSAT glucose)
-    target_include_directories(optimin PRIVATE
-        "${CMAKE_SOURCE_DIR}/EvalMaxSAT/lib/${LIB}/src")
-    target_link_libraries(optimin ${LIB})
-endforeach(LIB)
-
-llvm_map_components_to_libnames(LLVM_LIBS support)
-target_link_libraries(optimin ${LLVM_LIBS})
-
-install(TARGETS optimin RUNTIME DESTINATION bin)
diff --git a/utils/optimin/src/OptiMin.cpp b/utils/optimin/src/OptiMin.cpp
deleted file mode 100644
index b0082d14..00000000
--- a/utils/optimin/src/OptiMin.cpp
+++ /dev/null
@@ -1,702 +0,0 @@
-/*
- * OptiMin, an optimal fuzzing corpus minimizer.
- *
- * Author: Adrian Herrera
- */
-
-#include <cstdint>
-#include <cstdlib>
-#include <vector>
-
-#include <llvm/ADT/DenseSet.h>
-#include <llvm/ADT/DenseMap.h>
-#include <llvm/ADT/SmallVector.h>
-#include <llvm/ADT/StringExtras.h>
-#include <llvm/ADT/StringMap.h>
-#include <llvm/Support/Chrono.h>
-#include <llvm/Support/CommandLine.h>
-#include <llvm/Support/Error.h>
-#include <llvm/Support/FileSystem.h>
-#include <llvm/Support/MemoryBuffer.h>
-#include <llvm/Support/Path.h>
-#include <llvm/Support/Program.h>
-#include <llvm/Support/WithColor.h>
-
-#include "EvalMaxSAT.h"
-
-using namespace llvm;
-
-namespace {
-
-// -------------------------------------------------------------------------- //
-// Classes
-// -------------------------------------------------------------------------- //
-
-/// Ensure seed weights default to 1
-class Weight {
-
- public:
-  Weight() : Weight(1){};
-  Weight(uint32_t V) : Value(V){};
-
-  operator unsigned() const {
-
-    return Value;
-
-  }
-
- private:
-  const unsigned Value;
-
-};
-
-// -------------------------------------------------------------------------- //
-// Typedefs
-// -------------------------------------------------------------------------- //
-
-/// AFL tuple (edge) ID
-using AFLTupleID = uint32_t;
-
-/// Pair of tuple ID and hit count
-using AFLTuple = std::pair<AFLTupleID, /* Frequency */ unsigned>;
-
-/// Coverage for a given seed file
-using AFLCoverageVector = std::vector<AFLTuple>;
-
-/// Map seed file paths to its coverage vector
-using AFLCoverageMap = StringMap<AFLCoverageVector>;
-
-/// Map seed file paths to a weight
-using WeightsMap = StringMap<Weight>;
-
-/// A seed identifier in the MaxSAT solver
-using SeedID = int;
-
-/// Associates seed identifiers to seed files
-using MaxSATSeeds =
-    SmallVector<std::pair<SeedID, /* Seed file */ std::string>, 0>;
-
-/// Set of literal identifiers
-using MaxSATSeedSet = DenseSet<SeedID>;
-
-/// Maps tuple IDs to the literal identifiers that "cover" that tuple
-using MaxSATCoverageMap = DenseMap<AFLTupleID, MaxSATSeedSet>;
-
-// -------------------------------------------------------------------------- //
-// Global variables
-// -------------------------------------------------------------------------- //
-
-// This is based on the human class count in `count_class_human[256]` in
-// `afl-showmap.c`
-static constexpr uint32_t MAX_EDGE_FREQ = 8;
-
-// The maximum number of failures allowed when parsing a weights file
-static constexpr unsigned MAX_WEIGHT_FAILURES = 5;
-
-static sys::TimePoint<>     StartTime, EndTime;
-static std::chrono::seconds Duration;
-
-static std::string ShowmapPath;
-static bool        TargetArgsHasAtAt = false;
-static bool        KeepTraces = false;
-static bool        SkipBinCheck = false;
-
-static const auto ErrMsg = [] {
-
-  return WithColor(errs(), raw_ostream::RED, /*Bold=*/true) << "[-] ";
-
-};
-
-static const auto WarnMsg = [] {
-
-  return WithColor(errs(), raw_ostream::MAGENTA, /*Bold=*/true) << "[-] ";
-
-};
-
-static const auto SuccMsg = [] {
-
-  return WithColor(outs(), raw_ostream::GREEN, /*Bold=*/true) << "[+] ";
-
-};
-
-static const auto StatMsg = [] {
-
-  return WithColor(outs(), raw_ostream::BLUE, /*Bold=*/true) << "[*] ";
-
-};
-
-static cl::opt<std::string> InputDir("i", cl::desc("Input directory"),
-                                     cl::value_desc("dir"), cl::Required);
-static cl::opt<std::string> OutputDir("o", cl::desc("Output directory"),
-                                      cl::value_desc("dir"), cl::Required);
-
-static cl::opt<bool>        EdgesOnly("f", cl::desc("Include edge hit counts"),
-                               cl::init(true));
-static cl::opt<std::string> WeightsFile("w", cl::desc("Weights file"),
-                                        cl::value_desc("csv"));
-
-static cl::opt<std::string>  TargetProg(cl::Positional,
-                                       cl::desc("<target program>"),
-                                       cl::Required);
-static cl::list<std::string> TargetArgs(cl::ConsumeAfter,
-                                        cl::desc("[target args...]"));
-
-static cl::opt<std::string> MemLimit(
-    "m", cl::desc("Memory limit for child process (default=none)"),
-    cl::value_desc("megs"), cl::init("none"));
-static cl::opt<std::string> Timeout(
-    "t", cl::desc("Run time limit for child process (default=5000)"),
-    cl::value_desc("msec"), cl::init("5000"));
-
-static cl::opt<bool> CrashMode(
-    "C", cl::desc("Keep crashing inputs, reject everything else"));
-static cl::opt<bool> FridaMode(
-    "O", cl::desc("Use binary-only instrumentation (FRIDA mode)"));
-static cl::opt<bool> QemuMode(
-    "Q", cl::desc("Use binary-only instrumentation (QEMU mode)"));
-static cl::opt<bool> UnicornMode(
-    "U", cl::desc("Use unicorn-based instrumentation (unicorn mode)"));
-
-}  // anonymous namespace
-
-// -------------------------------------------------------------------------- //
-// Helper functions
-// -------------------------------------------------------------------------- //
-
-static void GetWeights(const MemoryBuffer &MB, WeightsMap &Weights) {
-
-  SmallVector<StringRef, 0> Lines;
-  MB.getBuffer().trim().split(Lines, '\n');
-
-  unsigned FailureCount = 0;
-  unsigned Weight = 0;
-
-  for (const auto &Line : Lines) {
-
-    const auto &[Seed, WeightStr] = Line.split(',');
-
-    if (to_integer(WeightStr, Weight, 10)) {
-
-      Weights.try_emplace(Seed, Weight);
-
-    } else {
-
-      if (FailureCount >= MAX_WEIGHT_FAILURES) {
-        ErrMsg() << "Too many failures. Aborting\n";
-        std::exit(1);
-      }
-
-      WarnMsg() << "Failed to read weight for '" << Seed << "'. Skipping...\n";
-      FailureCount++;
-
-    }
-
-  }
-
-}
-
-static std::error_code readCov(const StringRef Trace, AFLCoverageVector &Cov) {
-
-  const auto CovOrErr = MemoryBuffer::getFile(Trace);
-  if (const auto EC = CovOrErr.getError()) return EC;
-
-  SmallVector<StringRef, 0> Lines;
-  CovOrErr.get()->getBuffer().trim().split(Lines, '\n');
-
-  AFLTupleID Edge = 0;
-  unsigned   Freq = 0;
-
-  for (const auto &Line : Lines) {
-
-    const auto &[EdgeStr, FreqStr] = Line.split(':');
-
-    to_integer(EdgeStr, Edge, 10);
-    to_integer(FreqStr, Freq, 10);
-    Cov.push_back({Edge, Freq});
-
-  }
-
-  return std::error_code();
-
-}
-
-static Error runShowmap(AFLCoverageMap &CovMap, const StringRef Input,
-                        bool BinCheck = false) {
-
-  const bool          InputIsFile = !sys::fs::is_directory(Input);
-  Optional<StringRef> Redirects[] = {None, None, None};
-
-  SmallString<32> TraceDir{OutputDir};
-  sys::path::append(TraceDir, ".traces");
-
-  SmallString<32> Output{TraceDir};
-  SmallString<32> StdinFile{TraceDir};
-
-  // ------------------------------------------------------------------------ //
-  // Prepare afl-showmap arguments
-  //
-  // If the given input is a file, then feed this directly into stdin.
-  // Otherwise, if it is a directory, specify this on the afl-showmap command
-  // line.
-  // ------------------------------------------------------------------------ //
-
-  SmallVector<StringRef, 12> ShowmapArgs{ShowmapPath, "-q",
-                                         "-m",        MemLimit,
-                                         "-t",        Timeout};
-
-  if (InputIsFile) {
-
-    StdinFile = Input;
-    sys::path::append(Output,
-                      BinCheck ? ".run_test" : sys::path::filename(Input));
-
-  } else {
-
-    sys::path::append(StdinFile, ".cur_input");
-    ShowmapArgs.append({"-i", Input});
-
-  }
-
-
-  if (TargetArgsHasAtAt) {
-
-    ShowmapArgs.append({"-H", StdinFile});
-    Redirects[/* stdin */ 0] = "/dev/null";
-
-  } else if (InputIsFile) {
-
-    Redirects[/* stdin */ 0] = Input;
-
-  }
-
-  if (FridaMode) ShowmapArgs.push_back("-O");
-  if (QemuMode) ShowmapArgs.push_back("-Q");
-  if (UnicornMode) ShowmapArgs.push_back("-U");
-
-  ShowmapArgs.append({"-o", Output, "--", TargetProg});
-  ShowmapArgs.append(TargetArgs.begin(), TargetArgs.end());
-
-  // ------------------------------------------------------------------------ //
-  // Run afl-showmap
-  // ------------------------------------------------------------------------ //
-
-  const int RC = sys::ExecuteAndWait(ShowmapPath, ShowmapArgs,
-                                     /*env=*/None, Redirects);
-  if (RC && !CrashMode) {
-
-    ErrMsg() << "Exit code " << RC << " != 0 received from afl-showmap\n";
-    return createStringError(inconvertibleErrorCode(), "afl-showmap failed");
-
-  }
-
-  // ------------------------------------------------------------------------ //
-  // Parse afl-showmap output
-  // ------------------------------------------------------------------------ //
-
-  AFLCoverageVector    Cov;
-  std::error_code      EC;
-  sys::fs::file_status Status;
-
-  if (InputIsFile) {
-
-    // Read a single output coverage file
-    if ((EC = readCov(Output, Cov))) {
-
-      sys::fs::remove(Output);
-      return errorCodeToError(EC);
-
-    }
-
-    CovMap.try_emplace(sys::path::filename(Input), Cov);
-    if (!KeepTraces) sys::fs::remove(Output);
-
-  } else {
-
-    // Read a directory of output coverage files
-    for (sys::fs::recursive_directory_iterator Dir(TraceDir, EC), DirEnd;
-         Dir != DirEnd && !EC; Dir.increment(EC)) {
-
-      if (EC) return errorCodeToError(EC);
-
-      const auto &Path = Dir->path();
-      if ((EC = sys::fs::status(Path, Status))) return errorCodeToError(EC);
-
-      switch (Status.type()) {
-
-        case sys::fs::file_type::regular_file:
-        case sys::fs::file_type::symlink_file:
-        case sys::fs::file_type::type_unknown:
-          Cov.clear();
-          if ((EC = readCov(Path, Cov))) {
-
-            sys::fs::remove(Path);
-            return errorCodeToError(EC);
-
-          }
-
-          CovMap.try_emplace(sys::path::filename(Path), Cov);
-        default:
-          // Ignore
-          break;
-
-      }
-
-    }
-
-    if (!KeepTraces) sys::fs::remove_directories(TraceDir);
-
-  }
-
-  return Error::success();
-
-}
-
-static inline void StartTimer() {
-
-  StartTime = std::chrono::system_clock::now();
-
-}
-
-static inline void EndTimer() {
-
-  EndTime = std::chrono::system_clock::now();
-  Duration =
-      std::chrono::duration_cast<std::chrono::seconds>(EndTime - StartTime);
-
-  SuccMsg() << "  Completed in " << Duration.count() << " s\n";
-
-}
-
-// -------------------------------------------------------------------------- //
-// Main function
-// -------------------------------------------------------------------------- //
-
-int main(int argc, char *argv[]) {
-
-  WeightsMap      Weights;
-  std::error_code EC;
-
-  // ------------------------------------------------------------------------ //
-  // Parse command-line options and environment variables
-  //
-  // Also check the target arguments, as this determines how we run afl-showmap.
-  // ------------------------------------------------------------------------ //
-
-  cl::ParseCommandLineOptions(argc, argv, "Optimal corpus minimizer");
-
-  KeepTraces = !!std::getenv("AFL_KEEP_TRACES");
-  SkipBinCheck = !!std::getenv("AFL_SKIP_BIN_CHECK");
-  const auto AFLPath = std::getenv("AFL_PATH");
-
-  if (CrashMode) ::setenv("AFL_CMIN_CRASHES_ONLY", "1", /*overwrite=*/true);
-
-  for (const auto &Arg : TargetArgs)
-    if (Arg == "@@") TargetArgsHasAtAt = true;
-
-  // ------------------------------------------------------------------------ //
-  // Find afl-showmap
-  // ------------------------------------------------------------------------ //
-
-  SmallVector<StringRef, 16> EnvPaths;
-
-  if (const char *PathEnv = std::getenv("PATH"))
-    SplitString(PathEnv, EnvPaths, ":");
-  if (AFLPath) EnvPaths.push_back(AFLPath);
-
-  const auto ShowmapOrErr = sys::findProgramByName("afl-showmap", EnvPaths);
-  if (ShowmapOrErr.getError()) {
-
-    ErrMsg() << "Failed to find afl-showmap. Check your PATH\n";
-    return 1;
-
-  }
-
-  ShowmapPath = *ShowmapOrErr;
-
-  // ------------------------------------------------------------------------ //
-  // Parse weights
-  //
-  // Weights are stored in CSV file mapping a seed file name to an integer
-  // greater than zero.
-  // ------------------------------------------------------------------------ //
-
-  if (WeightsFile != "") {
-
-    StatMsg() << "Reading weights from '" << WeightsFile << "'...\n";
-    StartTimer();
-
-    const auto WeightsOrErr = MemoryBuffer::getFile(WeightsFile);
-    if ((EC = WeightsOrErr.getError())) {
-
-      ErrMsg() << "Failed to read weights from '" << WeightsFile
-               << "': " << EC.message() << '\n';
-      return 1;
-
-    }
-
-    GetWeights(*WeightsOrErr.get(), Weights);
-
-    EndTimer();
-
-  }
-
-  // ------------------------------------------------------------------------ //
-  // Traverse input directory
-  //
-  // Find the seed files inside this directory (and subdirectories).
-  // ------------------------------------------------------------------------ //
-
-  StatMsg() << "Locating seeds in '" << InputDir << "'...\n";
-  StartTimer();
-
-  bool IsDirResult;
-  if ((EC = sys::fs::is_directory(InputDir, IsDirResult))) {
-
-    ErrMsg() << "Invalid input directory '" << InputDir << "': " << EC.message()
-             << '\n';
-    return 1;
-
-  }
-
-  sys::fs::file_status   Status;
-  StringMap<std::string> SeedFiles;
-
-  for (sys::fs::recursive_directory_iterator Dir(InputDir, EC), DirEnd;
-       Dir != DirEnd && !EC; Dir.increment(EC)) {
-
-    if (EC) {
-
-      ErrMsg() << "Failed to traverse input directory '" << InputDir
-               << "': " << EC.message() << '\n';
-      return 1;
-
-    }
-
-    const auto &Path = Dir->path();
-    if ((EC = sys::fs::status(Path, Status))) {
-
-      ErrMsg() << "Failed to access '" << Path << "': " << EC.message() << '\n';
-      return 1;
-
-    }
-
-    switch (Status.type()) {
-
-      case sys::fs::file_type::regular_file:
-      case sys::fs::file_type::symlink_file:
-      case sys::fs::file_type::type_unknown:
-        SeedFiles.try_emplace(sys::path::filename(Path),
-                              sys::path::parent_path(Path));
-      default:
-        /* Ignore */
-        break;
-
-    }
-
-  }
-
-  EndTimer();
-
-  if (SeedFiles.empty()) {
-
-    ErrMsg() << "Failed to find any seed files in '" << InputDir << "'\n";
-    return 1;
-
-  }
-
-  // ------------------------------------------------------------------------ //
-  // Setup output directory
-  // ------------------------------------------------------------------------ //
-
-  SmallString<32> TraceDir{OutputDir};
-  sys::path::append(TraceDir, ".traces");
-
-  if ((EC = sys::fs::remove_directories(TraceDir))) {
-
-    ErrMsg() << "Failed to remove existing trace directory in '" << OutputDir
-             << "': " << EC.message() << '\n';
-    return 1;
-
-  }
-
-  if ((EC = sys::fs::create_directories(TraceDir))) {
-
-    ErrMsg() << "Failed to create output directory '" << OutputDir
-             << "': " << EC.message() << '\n';
-    return 1;
-
-  }
-
-  // ------------------------------------------------------------------------ //
-  // Test the target binary
-  // ------------------------------------------------------------------------ //
-
-  AFLCoverageMap CovMap;
-
-  if (!SkipBinCheck) {
-
-    const auto      It = SeedFiles.begin();
-    SmallString<32> TestSeed{It->second};
-    sys::path::append(TestSeed, It->first());
-
-    StatMsg() << "Testing the target binary with '" << TestSeed << "`...\n";
-    StartTimer();
-
-    if (auto Err = runShowmap(CovMap, TestSeed, /*BinCheck=*/true)) {
-
-      ErrMsg() << "No instrumentation output detected \n";
-      return 1;
-
-    }
-
-    EndTimer();
-    SuccMsg() << "OK, " << CovMap.begin()->second.size()
-              << " tuples recorded\n";
-
-  }
-
-  // ------------------------------------------------------------------------ //
-  // Generate seed coverage
-  //
-  // Iterate over the corpus directory, which should contain seed files. Execute
-  // these seeds in the target program to generate coverage information, and
-  // then store this coverage information in the appropriate data structures.
-  // ------------------------------------------------------------------------ //
-
-  StatMsg() << "Running afl-showmap on " << SeedFiles.size() << " seeds...\n";
-  StartTimer();
-
-  MaxSATSeeds       SeedVars;
-  MaxSATCoverageMap SeedCoverage;
-  EvalMaxSAT        Solver(/*nbMinimizeThread=*/0);
-
-  CovMap.clear();
-  if (auto Err = runShowmap(CovMap, InputDir)) {
-
-    ErrMsg() << "Failed to generate coverage: " << Err << '\n';
-    return 1;
-
-  }
-
-  for (const auto &SeedCov : CovMap) {
-
-    // Create a variable to represent the seed
-    const SeedID Var = Solver.newVar();
-    SeedVars.emplace_back(Var, SeedCov.first());
-
-    // Record the set of seeds that cover a particular edge
-    for (auto &[Edge, Freq] : SeedCov.second) {
-
-      if (EdgesOnly) {
-
-        // Ignore edge frequency
-        SeedCoverage[Edge].insert(Var);
-
-      } else {
-
-        // Executing edge `E` `N` times means that it was executed `N - 1` times
-        for (unsigned I = 0; I < Freq; ++I)
-          SeedCoverage[MAX_EDGE_FREQ * Edge + I].insert(Var);
-
-      }
-
-    }
-
-  }
-
-  EndTimer();
-
-  // ------------------------------------------------------------------------ //
-  // Set the hard and soft constraints in the solver
-  // ------------------------------------------------------------------------ //
-
-  StatMsg() << "Generating constraints...\n";
-  StartTimer();
-
-  size_t SeedCount = 0;
-
-  // Ensure that at least one seed is selected that covers a particular edge
-  // (hard constraint)
-  std::vector<SeedID> Clauses;
-  for (const auto &[_, Seeds] : SeedCoverage) {
-
-    if (Seeds.empty()) continue;
-
-    Clauses.clear();
-    for (const auto &Seed : Seeds)
-      Clauses.push_back(Seed);
-
-    Solver.addClause(Clauses);
-
-  }
-
-  // Select the minimum number of seeds that cover a particular set of edges
-  // (soft constraint)
-  for (const auto &[Var, Seed] : SeedVars)
-    Solver.addWeightedClause({-Var}, Weights[sys::path::filename(Seed)]);
-
-  EndTimer();
-
-  // ------------------------------------------------------------------------ //
-  // Generate a solution
-  // ------------------------------------------------------------------------ //
-
-  StatMsg() << "Solving...\n";
-  StartTimer();
-
-  const bool Solved = Solver.solve();
-
-  EndTimer();
-
-  // ------------------------------------------------------------------------ //
-  // Save the solution
-  //
-  // This will copy the selected seeds to the given output directory.
-  // ------------------------------------------------------------------------ //
-
-  SmallVector<StringRef, 64> Solution;
-  SmallString<32>            InputSeed, OutputSeed;
-
-  if (Solved) {
-
-    for (const auto &[Var, Seed] : SeedVars)
-      if (Solver.getValue(Var) > 0) Solution.push_back(Seed);
-
-  } else {
-
-    ErrMsg() << "Failed to find an optimal solution for '" << InputDir << "'\n";
-    return 1;
-
-  }
-
-  StatMsg() << "Copying " << Solution.size() << " seeds to '" << OutputDir
-            << "'...\n";
-  StartTimer();
-
-  SeedCount = 0;
-
-  for (const auto &Seed : Solution) {
-
-    InputSeed = SeedFiles[Seed];
-    sys::path::append(InputSeed, Seed);
-
-    OutputSeed = OutputDir;
-    sys::path::append(OutputSeed, Seed);
-
-    if ((EC = sys::fs::copy_file(InputSeed, OutputSeed))) {
-
-      ErrMsg() << "Failed to copy '" << Seed << "' to '" << OutputDir
-               << "': " << EC.message() << '\n';
-      return 1;
-
-    }
-
-  }
-
-  EndTimer();
-  SuccMsg() << "Done!\n";
-
-  return 0;
-
-}
-