/usr/bin/java -Xmx16000000000 -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-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_09-ptrmunge_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 18:02:21,868 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 18:02:21,945 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-25 18:02:21,951 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 18:02:21,952 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 18:02:21,994 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 18:02:21,995 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 18:02:21,995 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 18:02:21,996 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 18:02:22,000 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 18:02:22,000 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 18:02:22,001 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 18:02:22,001 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 18:02:22,002 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 18:02:22,002 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 18:02:22,003 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 18:02:22,003 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 18:02:22,003 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 18:02:22,003 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 18:02:22,004 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 18:02:22,004 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 18:02:22,005 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 18:02:22,005 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 18:02:22,005 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 18:02:22,006 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 18:02:22,006 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 18:02:22,006 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 18:02:22,007 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 18:02:22,007 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 18:02:22,007 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 18:02:22,007 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 18:02:22,008 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 18:02:22,008 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 18:02:22,008 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 18:02:22,008 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 18:02:22,009 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 18:02:22,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 18:02:22,402 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 18:02:22,404 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 18:02:22,405 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 18:02:22,406 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 18:02:22,407 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_09-ptrmunge_racing.i [2023-08-25 18:02:23,638 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 18:02:23,962 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 18:02:23,962 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_09-ptrmunge_racing.i [2023-08-25 18:02:23,980 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5c47c052/89572e77dc4e4b4e81c91f5b699327d9/FLAGd565ad8e4 [2023-08-25 18:02:24,001 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5c47c052/89572e77dc4e4b4e81c91f5b699327d9 [2023-08-25 18:02:24,006 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 18:02:24,009 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 18:02:24,012 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 18:02:24,012 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 18:02:24,016 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 18:02:24,018 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 06:02:24" (1/1) ... [2023-08-25 18:02:24,019 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@541e46ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:02:24, skipping insertion in model container [2023-08-25 18:02:24,019 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 06:02:24" (1/1) ... [2023-08-25 18:02:24,069 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 18:02:24,436 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 18:02:24,453 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 18:02:24,478 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-25 18:02:24,480 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-25 18:02:24,516 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 18:02:24,560 INFO L206 MainTranslator]: Completed translation [2023-08-25 18:02:24,560 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:02:24 WrapperNode [2023-08-25 18:02:24,560 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 18:02:24,562 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 18:02:24,562 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 18:02:24,562 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 18:02:24,568 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:02:24" (1/1) ... [2023-08-25 18:02:24,603 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:02:24" (1/1) ... [2023-08-25 18:02:24,646 INFO L138 Inliner]: procedures = 172, calls = 51, calls flagged for inlining = 6, calls inlined = 8, statements flattened = 296 [2023-08-25 18:02:24,646 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 18:02:24,647 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 18:02:24,647 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 18:02:24,647 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 18:02:24,656 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:02:24" (1/1) ... [2023-08-25 18:02:24,656 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:02:24" (1/1) ... [2023-08-25 18:02:24,675 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:02:24" (1/1) ... [2023-08-25 18:02:24,676 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:02:24" (1/1) ... [2023-08-25 18:02:24,698 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:02:24" (1/1) ... [2023-08-25 18:02:24,703 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:02:24" (1/1) ... [2023-08-25 18:02:24,706 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:02:24" (1/1) ... [2023-08-25 18:02:24,708 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:02:24" (1/1) ... [2023-08-25 18:02:24,711 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 18:02:24,713 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 18:02:24,713 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 18:02:24,717 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 18:02:24,718 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:02:24" (1/1) ... [2023-08-25 18:02:24,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 18:02:24,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 18:02:24,751 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) [2023-08-25 18:02:24,753 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 [2023-08-25 18:02:24,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 18:02:24,776 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-25 18:02:24,776 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-25 18:02:24,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 18:02:24,776 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-25 18:02:24,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 18:02:24,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 18:02:24,777 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-25 18:02:24,777 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-25 18:02:24,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 18:02:24,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 18:02:24,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 18:02:24,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 18:02:24,779 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-25 18:02:24,899 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 18:02:24,907 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 18:02:25,431 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 18:02:25,440 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 18:02:25,440 INFO L302 CfgBuilder]: Removed 24 assume(true) statements. [2023-08-25 18:02:25,443 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 06:02:25 BoogieIcfgContainer [2023-08-25 18:02:25,443 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 18:02:25,446 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 18:02:25,447 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 18:02:25,449 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 18:02:25,450 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 06:02:24" (1/3) ... [2023-08-25 18:02:25,451 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bd59e04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 06:02:25, skipping insertion in model container [2023-08-25 18:02:25,451 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:02:24" (2/3) ... [2023-08-25 18:02:25,452 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bd59e04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 06:02:25, skipping insertion in model container [2023-08-25 18:02:25,452 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 06:02:25" (3/3) ... [2023-08-25 18:02:25,453 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_09-ptrmunge_racing.i [2023-08-25 18:02:25,468 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 18:02:25,468 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-08-25 18:02:25,468 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 18:02:25,586 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-25 18:02:25,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 278 places, 307 transitions, 636 flow [2023-08-25 18:02:25,832 INFO L124 PetriNetUnfolderBase]: 61/556 cut-off events. [2023-08-25 18:02:25,833 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-25 18:02:25,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 576 conditions, 556 events. 61/556 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2855 event pairs, 0 based on Foata normal form. 0/463 useless extension candidates. Maximal degree in co-relation 310. Up to 8 conditions per place. [2023-08-25 18:02:25,851 INFO L82 GeneralOperation]: Start removeDead. Operand has 278 places, 307 transitions, 636 flow [2023-08-25 18:02:25,863 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 278 places, 307 transitions, 636 flow [2023-08-25 18:02:25,866 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 18:02:25,879 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 278 places, 307 transitions, 636 flow [2023-08-25 18:02:25,883 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 278 places, 307 transitions, 636 flow [2023-08-25 18:02:25,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 278 places, 307 transitions, 636 flow [2023-08-25 18:02:26,004 INFO L124 PetriNetUnfolderBase]: 61/556 cut-off events. [2023-08-25 18:02:26,005 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-25 18:02:26,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 576 conditions, 556 events. 61/556 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2855 event pairs, 0 based on Foata normal form. 0/463 useless extension candidates. Maximal degree in co-relation 310. Up to 8 conditions per place. [2023-08-25 18:02:26,045 INFO L119 LiptonReduction]: Number of co-enabled transitions 44154 [2023-08-25 18:02:30,654 INFO L134 LiptonReduction]: Checked pairs total: 183979 [2023-08-25 18:02:30,654 INFO L136 LiptonReduction]: Total number of compositions: 188 [2023-08-25 18:02:30,668 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-25 18:02:30,674 INFO L357 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=false, mAutomataTypeConcurrency=PETRI_NET, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3c2b1b04, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 18:02:30,675 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-25 18:02:30,679 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 18:02:30,679 INFO L124 PetriNetUnfolderBase]: 1/23 cut-off events. [2023-08-25 18:02:30,679 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 18:02:30,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 18:02:30,680 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-25 18:02:30,680 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-25 18:02:30,684 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 18:02:30,685 INFO L85 PathProgramCache]: Analyzing trace with hash 46535008, now seen corresponding path program 1 times [2023-08-25 18:02:30,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 18:02:30,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771501565] [2023-08-25 18:02:30,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 18:02:30,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 18:02:30,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 18:02:30,803 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 18:02:30,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 18:02:30,844 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 18:02:30,846 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 18:02:30,847 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-25 18:02:30,849 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-25 18:02:30,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 18:02:30,849 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-25 18:02:30,852 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-25 18:02:30,853 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 18:02:30,853 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-25 18:02:30,933 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-25 18:02:30,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 456 places, 511 transitions, 1070 flow [2023-08-25 18:02:31,416 INFO L124 PetriNetUnfolderBase]: 205/1643 cut-off events. [2023-08-25 18:02:31,417 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-25 18:02:31,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1740 conditions, 1643 events. 205/1643 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 11636 event pairs, 1 based on Foata normal form. 0/1371 useless extension candidates. Maximal degree in co-relation 989. Up to 32 conditions per place. [2023-08-25 18:02:31,468 INFO L82 GeneralOperation]: Start removeDead. Operand has 456 places, 511 transitions, 1070 flow [2023-08-25 18:02:31,489 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 456 places, 511 transitions, 1070 flow [2023-08-25 18:02:31,489 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 18:02:31,489 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 456 places, 511 transitions, 1070 flow [2023-08-25 18:02:31,490 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 456 places, 511 transitions, 1070 flow [2023-08-25 18:02:31,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 456 places, 511 transitions, 1070 flow [2023-08-25 18:02:31,916 INFO L124 PetriNetUnfolderBase]: 205/1643 cut-off events. [2023-08-25 18:02:31,916 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-25 18:02:31,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1740 conditions, 1643 events. 205/1643 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 11636 event pairs, 1 based on Foata normal form. 0/1371 useless extension candidates. Maximal degree in co-relation 989. Up to 32 conditions per place. [2023-08-25 18:02:32,058 INFO L119 LiptonReduction]: Number of co-enabled transitions 170676 [2023-08-25 18:02:37,768 INFO L134 LiptonReduction]: Checked pairs total: 705639 [2023-08-25 18:02:37,768 INFO L136 LiptonReduction]: Total number of compositions: 309 [2023-08-25 18:02:37,770 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-25 18:02:37,772 INFO L357 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=false, mAutomataTypeConcurrency=PETRI_NET, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3c2b1b04, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 18:02:37,772 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-25 18:02:37,785 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 18:02:37,785 INFO L124 PetriNetUnfolderBase]: 22/153 cut-off events. [2023-08-25 18:02:37,785 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-08-25 18:02:37,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 18:02:37,786 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-25 18:02:37,786 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-25 18:02:37,786 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 18:02:37,786 INFO L85 PathProgramCache]: Analyzing trace with hash -888787278, now seen corresponding path program 1 times [2023-08-25 18:02:37,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 18:02:37,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132369682] [2023-08-25 18:02:37,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 18:02:37,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 18:02:37,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 18:02:37,812 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 18:02:37,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 18:02:37,844 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 18:02:37,844 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 18:02:37,845 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-25 18:02:37,845 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-25 18:02:37,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 18:02:37,845 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-25 18:02:37,846 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-25 18:02:37,846 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 18:02:37,846 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-25 18:02:37,937 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-08-25 18:02:37,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 634 places, 715 transitions, 1508 flow [2023-08-25 18:02:39,743 INFO L124 PetriNetUnfolderBase]: 679/4588 cut-off events. [2023-08-25 18:02:39,744 INFO L125 PetriNetUnfolderBase]: For 419/419 co-relation queries the response was YES. [2023-08-25 18:02:39,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5039 conditions, 4588 events. 679/4588 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 38682 event pairs, 32 based on Foata normal form. 0/3879 useless extension candidates. Maximal degree in co-relation 2884. Up to 192 conditions per place. [2023-08-25 18:02:39,885 INFO L82 GeneralOperation]: Start removeDead. Operand has 634 places, 715 transitions, 1508 flow [2023-08-25 18:02:40,007 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 634 places, 715 transitions, 1508 flow [2023-08-25 18:02:40,008 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 18:02:40,008 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 634 places, 715 transitions, 1508 flow [2023-08-25 18:02:40,009 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 634 places, 715 transitions, 1508 flow [2023-08-25 18:02:40,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 634 places, 715 transitions, 1508 flow [2023-08-25 18:02:41,292 INFO L124 PetriNetUnfolderBase]: 679/4588 cut-off events. [2023-08-25 18:02:41,293 INFO L125 PetriNetUnfolderBase]: For 419/419 co-relation queries the response was YES. [2023-08-25 18:02:41,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5039 conditions, 4588 events. 679/4588 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 38682 event pairs, 32 based on Foata normal form. 0/3879 useless extension candidates. Maximal degree in co-relation 2884. Up to 192 conditions per place. [2023-08-25 18:02:41,825 INFO L119 LiptonReduction]: Number of co-enabled transitions 379566 [2023-08-25 18:02:48,573 INFO L134 LiptonReduction]: Checked pairs total: 1807242 [2023-08-25 18:02:48,574 INFO L136 LiptonReduction]: Total number of compositions: 423 [2023-08-25 18:02:48,575 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-25 18:02:48,576 INFO L357 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=false, mAutomataTypeConcurrency=PETRI_NET, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3c2b1b04, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 18:02:48,576 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-25 18:02:48,596 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 18:02:48,597 INFO L124 PetriNetUnfolderBase]: 48/340 cut-off events. [2023-08-25 18:02:48,597 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-08-25 18:02:48,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 18:02:48,597 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-25 18:02:48,597 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-25 18:02:48,598 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 18:02:48,598 INFO L85 PathProgramCache]: Analyzing trace with hash 755585724, now seen corresponding path program 1 times [2023-08-25 18:02:48,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 18:02:48,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154946469] [2023-08-25 18:02:48,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 18:02:48,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 18:02:48,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 18:02:48,626 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 18:02:48,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 18:02:48,654 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 18:02:48,654 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 18:02:48,654 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-25 18:02:48,655 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-25 18:02:48,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 18:02:48,655 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-25 18:02:48,656 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-25 18:02:48,656 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 18:02:48,656 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-25 18:02:48,744 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2023-08-25 18:02:48,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 812 places, 919 transitions, 1950 flow [2023-08-25 18:02:55,570 INFO L124 PetriNetUnfolderBase]: 2671/14575 cut-off events. [2023-08-25 18:02:55,571 INFO L125 PetriNetUnfolderBase]: For 2144/2144 co-relation queries the response was YES. [2023-08-25 18:02:56,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16740 conditions, 14575 events. 2671/14575 cut-off events. For 2144/2144 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 148948 event pairs, 313 based on Foata normal form. 0/12523 useless extension candidates. Maximal degree in co-relation 8960. Up to 1024 conditions per place. [2023-08-25 18:02:56,455 INFO L82 GeneralOperation]: Start removeDead. Operand has 812 places, 919 transitions, 1950 flow [2023-08-25 18:02:56,968 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 812 places, 919 transitions, 1950 flow [2023-08-25 18:02:56,968 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 18:02:56,968 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 812 places, 919 transitions, 1950 flow [2023-08-25 18:02:56,969 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 812 places, 919 transitions, 1950 flow [2023-08-25 18:02:56,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 812 places, 919 transitions, 1950 flow [2023-08-25 18:03:03,339 INFO L124 PetriNetUnfolderBase]: 2671/14575 cut-off events. [2023-08-25 18:03:03,339 INFO L125 PetriNetUnfolderBase]: For 2144/2144 co-relation queries the response was YES. [2023-08-25 18:03:04,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16740 conditions, 14575 events. 2671/14575 cut-off events. For 2144/2144 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 148948 event pairs, 313 based on Foata normal form. 0/12523 useless extension candidates. Maximal degree in co-relation 8960. Up to 1024 conditions per place. [2023-08-25 18:03:05,883 INFO L119 LiptonReduction]: Number of co-enabled transitions 670824 [2023-08-25 18:03:14,415 INFO L134 LiptonReduction]: Checked pairs total: 2930110 [2023-08-25 18:03:14,416 INFO L136 LiptonReduction]: Total number of compositions: 531 [2023-08-25 18:03:14,418 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-25 18:03:14,419 INFO L357 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=false, mAutomataTypeConcurrency=PETRI_NET, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3c2b1b04, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 18:03:14,419 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-25 18:03:14,461 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 18:03:14,462 INFO L124 PetriNetUnfolderBase]: 85/611 cut-off events. [2023-08-25 18:03:14,462 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2023-08-25 18:03:14,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 18:03:14,462 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-25 18:03:14,462 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-25 18:03:14,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 18:03:14,463 INFO L85 PathProgramCache]: Analyzing trace with hash -327163861, now seen corresponding path program 1 times [2023-08-25 18:03:14,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 18:03:14,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345718416] [2023-08-25 18:03:14,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 18:03:14,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 18:03:14,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 18:03:14,511 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 18:03:14,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 18:03:14,541 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 18:03:14,541 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 18:03:14,542 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-25 18:03:14,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-25 18:03:14,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 18:03:14,542 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-25 18:03:14,543 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-25 18:03:14,543 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 18:03:14,543 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-25 18:03:14,653 INFO L144 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2023-08-25 18:03:14,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 990 places, 1123 transitions, 2396 flow [2023-08-25 18:03:45,487 INFO L124 PetriNetUnfolderBase]: 11797/53204 cut-off events. [2023-08-25 18:03:45,487 INFO L125 PetriNetUnfolderBase]: For 10450/10450 co-relation queries the response was YES. [2023-08-25 18:03:52,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63630 conditions, 53204 events. 11797/53204 cut-off events. For 10450/10450 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 658291 event pairs, 2148 based on Foata normal form. 0/46311 useless extension candidates. Maximal degree in co-relation 32174. Up to 5120 conditions per place. [2023-08-25 18:03:52,095 INFO L82 GeneralOperation]: Start removeDead. Operand has 990 places, 1123 transitions, 2396 flow [2023-08-25 18:03:53,849 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 990 places, 1123 transitions, 2396 flow [2023-08-25 18:03:53,850 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 18:03:53,850 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 990 places, 1123 transitions, 2396 flow [2023-08-25 18:03:53,850 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 990 places, 1123 transitions, 2396 flow [2023-08-25 18:03:53,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 990 places, 1123 transitions, 2396 flow [2023-08-25 18:04:23,834 INFO L124 PetriNetUnfolderBase]: 11797/53204 cut-off events. [2023-08-25 18:04:23,835 INFO L125 PetriNetUnfolderBase]: For 10450/10450 co-relation queries the response was YES. [2023-08-25 18:04:29,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63630 conditions, 53204 events. 11797/53204 cut-off events. For 10450/10450 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 658291 event pairs, 2148 based on Foata normal form. 0/46311 useless extension candidates. Maximal degree in co-relation 32174. Up to 5120 conditions per place. [2023-08-25 18:04:39,808 INFO L119 LiptonReduction]: Number of co-enabled transitions 1044450 [2023-08-25 18:04:50,236 INFO L134 LiptonReduction]: Checked pairs total: 5134337 [2023-08-25 18:04:50,236 INFO L136 LiptonReduction]: Total number of compositions: 653 [2023-08-25 18:04:50,239 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-25 18:04:50,240 INFO L357 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=false, mAutomataTypeConcurrency=PETRI_NET, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3c2b1b04, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 18:04:50,240 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-25 18:04:50,462 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 18:04:50,462 INFO L124 PetriNetUnfolderBase]: 141/991 cut-off events. [2023-08-25 18:04:50,462 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2023-08-25 18:04:50,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 18:04:50,462 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 18:04:50,462 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-25 18:04:50,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 18:04:50,463 INFO L85 PathProgramCache]: Analyzing trace with hash -110379834, now seen corresponding path program 1 times [2023-08-25 18:04:50,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 18:04:50,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87834355] [2023-08-25 18:04:50,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 18:04:50,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 18:04:50,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 18:04:50,503 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 18:04:50,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 18:04:50,533 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 18:04:50,533 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 18:04:50,533 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-25 18:04:50,533 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-25 18:04:50,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-25 18:04:50,534 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-25 18:04:50,534 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-25 18:04:50,534 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 18:04:50,534 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-25 18:04:50,646 INFO L144 ThreadInstanceAdder]: Constructed 24 joinOtherThreadTransitions. [2023-08-25 18:04:50,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1168 places, 1327 transitions, 2846 flow