/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleep-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/pthreadMutex02-unsafe.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd [2022-02-15 19:00:49,314 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-15 19:00:49,315 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-15 19:00:49,339 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-15 19:00:49,339 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-15 19:00:49,340 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-15 19:00:49,341 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-15 19:00:49,343 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-15 19:00:49,344 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-15 19:00:49,345 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-15 19:00:49,346 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-15 19:00:49,346 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-15 19:00:49,347 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-15 19:00:49,347 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-15 19:00:49,348 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-15 19:00:49,349 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-15 19:00:49,350 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-15 19:00:49,352 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-15 19:00:49,355 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-15 19:00:49,356 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-15 19:00:49,357 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-15 19:00:49,385 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-15 19:00:49,385 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-15 19:00:49,386 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-15 19:00:49,388 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-15 19:00:49,390 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-15 19:00:49,400 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-15 19:00:49,401 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-15 19:00:49,402 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-15 19:00:49,402 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-15 19:00:49,402 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-15 19:00:49,403 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-15 19:00:49,403 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-15 19:00:49,403 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-15 19:00:49,404 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-15 19:00:49,404 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-15 19:00:49,407 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleep-NoLbe.epf [2022-02-15 19:00:49,432 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-15 19:00:49,432 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-15 19:00:49,432 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-15 19:00:49,432 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-15 19:00:49,433 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-15 19:00:49,433 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-15 19:00:49,434 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-15 19:00:49,434 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-15 19:00:49,434 INFO L138 SettingsManager]: * Use SBE=true [2022-02-15 19:00:49,434 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-15 19:00:49,435 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-15 19:00:49,435 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-15 19:00:49,435 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-15 19:00:49,435 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-15 19:00:49,435 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-15 19:00:49,436 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-15 19:00:49,436 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-15 19:00:49,436 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-15 19:00:49,436 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-15 19:00:49,436 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-15 19:00:49,436 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-15 19:00:49,436 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-15 19:00:49,436 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-15 19:00:49,436 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-15 19:00:49,437 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-15 19:00:49,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 19:00:49,437 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-15 19:00:49,437 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-02-15 19:00:49,437 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-15 19:00:49,437 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-15 19:00:49,437 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-15 19:00:49,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-15 19:00:49,438 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-15 19:00:49,438 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-02-15 19:00:49,438 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-15 19:00:49,438 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2022-02-15 19:00:49,438 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-15 19:00:49,615 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-15 19:00:49,634 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-15 19:00:49,636 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-15 19:00:49,637 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-15 19:00:49,638 INFO L275 PluginConnector]: CDTParser initialized [2022-02-15 19:00:49,638 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/pthreadMutex02-unsafe.c [2022-02-15 19:00:49,693 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4671c859/34278fb6fb32468797b5a22b4f5691c8/FLAG3618220f1 [2022-02-15 19:00:50,048 INFO L306 CDTParser]: Found 1 translation units. [2022-02-15 19:00:50,049 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/pthreadMutex02-unsafe.c [2022-02-15 19:00:50,049 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2022-02-15 19:00:50,050 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2022-02-15 19:00:50,087 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4671c859/34278fb6fb32468797b5a22b4f5691c8/FLAG3618220f1 [2022-02-15 19:00:50,103 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4671c859/34278fb6fb32468797b5a22b4f5691c8 [2022-02-15 19:00:50,106 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-15 19:00:50,108 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-15 19:00:50,110 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-15 19:00:50,110 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-15 19:00:50,121 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-15 19:00:50,122 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 07:00:50" (1/1) ... [2022-02-15 19:00:50,122 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8d3ab04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:00:50, skipping insertion in model container [2022-02-15 19:00:50,123 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 07:00:50" (1/1) ... [2022-02-15 19:00:50,128 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-15 19:00:50,142 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-15 19:00:50,306 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 19:00:50,314 INFO L203 MainTranslator]: Completed pre-run [2022-02-15 19:00:50,323 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 19:00:50,332 INFO L208 MainTranslator]: Completed translation [2022-02-15 19:00:50,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:00:50 WrapperNode [2022-02-15 19:00:50,333 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-15 19:00:50,333 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-15 19:00:50,333 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-15 19:00:50,333 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-15 19:00:50,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:00:50" (1/1) ... [2022-02-15 19:00:50,350 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:00:50" (1/1) ... [2022-02-15 19:00:50,366 INFO L137 Inliner]: procedures = 12, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 31 [2022-02-15 19:00:50,366 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-15 19:00:50,367 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-15 19:00:50,367 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-15 19:00:50,367 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-15 19:00:50,373 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:00:50" (1/1) ... [2022-02-15 19:00:50,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:00:50" (1/1) ... [2022-02-15 19:00:50,383 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:00:50" (1/1) ... [2022-02-15 19:00:50,383 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:00:50" (1/1) ... [2022-02-15 19:00:50,384 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:00:50" (1/1) ... [2022-02-15 19:00:50,385 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:00:50" (1/1) ... [2022-02-15 19:00:50,386 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:00:50" (1/1) ... [2022-02-15 19:00:50,386 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-15 19:00:50,387 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-15 19:00:50,387 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-15 19:00:50,387 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-15 19:00:50,388 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:00:50" (1/1) ... [2022-02-15 19:00:50,395 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 19:00:50,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 19:00:50,416 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-15 19:00:50,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-15 19:00:50,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-02-15 19:00:50,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-15 19:00:50,458 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-02-15 19:00:50,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-15 19:00:50,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-15 19:00:50,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-15 19:00:50,506 INFO L234 CfgBuilder]: Building ICFG [2022-02-15 19:00:50,507 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-15 19:00:50,568 INFO L275 CfgBuilder]: Performing block encoding [2022-02-15 19:00:50,572 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-15 19:00:50,572 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-15 19:00:50,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 07:00:50 BoogieIcfgContainer [2022-02-15 19:00:50,573 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-15 19:00:50,575 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-15 19:00:50,575 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-15 19:00:50,577 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-15 19:00:50,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 07:00:50" (1/3) ... [2022-02-15 19:00:50,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dafcca1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 07:00:50, skipping insertion in model container [2022-02-15 19:00:50,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:00:50" (2/3) ... [2022-02-15 19:00:50,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dafcca1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 07:00:50, skipping insertion in model container [2022-02-15 19:00:50,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 07:00:50" (3/3) ... [2022-02-15 19:00:50,580 INFO L111 eAbstractionObserver]: Analyzing ICFG pthreadMutex02-unsafe.c [2022-02-15 19:00:50,583 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-15 19:00:50,583 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-15 19:00:50,620 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-15 19:00:50,626 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mLazyFiniteAutomaton=true, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-15 19:00:50,626 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-15 19:00:50,636 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.2) internal successors, (6), 6 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 19:00:50,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-02-15 19:00:50,639 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 19:00:50,640 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2022-02-15 19:00:50,640 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-02-15 19:00:50,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 19:00:50,645 INFO L85 PathProgramCache]: Analyzing trace with hash 29856, now seen corresponding path program 1 times [2022-02-15 19:00:50,653 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 19:00:50,653 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840617364] [2022-02-15 19:00:50,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 19:00:50,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 19:00:50,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-15 19:00:50,746 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-15 19:00:50,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-15 19:00:50,786 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-15 19:00:50,787 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-15 19:00:50,789 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (0 of 1 remaining) [2022-02-15 19:00:50,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-15 19:00:50,795 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-02-15 19:00:50,797 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-15 19:00:50,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 07:00:50 BoogieIcfgContainer [2022-02-15 19:00:50,815 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-15 19:00:50,816 INFO L158 Benchmark]: Toolchain (without parser) took 707.25ms. Allocated memory is still 198.2MB. Free memory was 141.4MB in the beginning and 143.0MB in the end (delta: -1.6MB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-15 19:00:50,816 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 198.2MB. Free memory is still 159.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-15 19:00:50,817 INFO L158 Benchmark]: CACSL2BoogieTranslator took 223.11ms. Allocated memory is still 198.2MB. Free memory was 141.2MB in the beginning and 167.1MB in the end (delta: -25.9MB). Peak memory consumption was 10.1MB. Max. memory is 8.0GB. [2022-02-15 19:00:50,818 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.92ms. Allocated memory is still 198.2MB. Free memory was 167.1MB in the beginning and 165.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-15 19:00:50,819 INFO L158 Benchmark]: Boogie Preprocessor took 19.79ms. Allocated memory is still 198.2MB. Free memory was 165.5MB in the beginning and 164.5MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-15 19:00:50,823 INFO L158 Benchmark]: RCFGBuilder took 186.42ms. Allocated memory is still 198.2MB. Free memory was 164.5MB in the beginning and 156.1MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-02-15 19:00:50,823 INFO L158 Benchmark]: TraceAbstraction took 239.89ms. Allocated memory is still 198.2MB. Free memory was 155.6MB in the beginning and 143.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-02-15 19:00:50,828 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 198.2MB. Free memory is still 159.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 223.11ms. Allocated memory is still 198.2MB. Free memory was 141.2MB in the beginning and 167.1MB in the end (delta: -25.9MB). Peak memory consumption was 10.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 32.92ms. Allocated memory is still 198.2MB. Free memory was 167.1MB in the beginning and 165.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 19.79ms. Allocated memory is still 198.2MB. Free memory was 165.5MB in the beginning and 164.5MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 186.42ms. Allocated memory is still 198.2MB. Free memory was 164.5MB in the beginning and 156.1MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * TraceAbstraction took 239.89ms. Allocated memory is still 198.2MB. Free memory was 155.6MB in the beginning and 143.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 45]: assertion can be violated assertion can be violated We found a FailurePath: [L35] pthread_mutex_t mutex; VAL [mutex={3:0}] [L42] int ret = pthread_mutex_unlock(&mutex); [L45] CodeAnnotStmt[Assertion] VAL [mutex={3:0}, ret=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-02-15 19:00:50,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...