/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 -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/04-mutex_25-single_acc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 03:15:51,674 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 03:15:51,761 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 03:15:51,766 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 03:15:51,766 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 03:15:51,795 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 03:15:51,796 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 03:15:51,796 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 03:15:51,797 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 03:15:51,797 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 03:15:51,797 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 03:15:51,798 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 03:15:51,798 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 03:15:51,798 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 03:15:51,799 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 03:15:51,799 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 03:15:51,799 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 03:15:51,800 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 03:15:51,800 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 03:15:51,800 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 03:15:51,800 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 03:15:51,805 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 03:15:51,805 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 03:15:51,805 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 03:15:51,805 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 03:15:51,806 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 03:15:51,806 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 03:15:51,806 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 03:15:51,806 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 03:15:51,807 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 03:15:51,807 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 03:15:51,807 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 03:15:51,807 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 03:15:51,807 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 03:15:51,808 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 03:15:51,808 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 03:15:52,115 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 03:15:52,131 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 03:15:52,133 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 03:15:52,134 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 03:15:52,134 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 03:15:52,136 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/04-mutex_25-single_acc.i [2023-08-25 03:15:53,313 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 03:15:53,630 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 03:15:53,630 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/04-mutex_25-single_acc.i [2023-08-25 03:15:53,650 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c09959ea/c381ae40fb2c436eb60d5a11a34932a0/FLAGf446a9e56 [2023-08-25 03:15:53,665 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c09959ea/c381ae40fb2c436eb60d5a11a34932a0 [2023-08-25 03:15:53,669 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 03:15:53,671 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 03:15:53,672 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 03:15:53,672 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 03:15:53,674 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 03:15:53,675 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 03:15:53" (1/1) ... [2023-08-25 03:15:53,676 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10b5fc4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:15:53, skipping insertion in model container [2023-08-25 03:15:53,676 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 03:15:53" (1/1) ... [2023-08-25 03:15:53,719 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 03:15:53,934 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 03:15:53,942 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 03:15:53,960 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-25 03:15:53,961 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-25 03:15:53,976 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 03:15:54,004 INFO L206 MainTranslator]: Completed translation [2023-08-25 03:15:54,005 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:15:54 WrapperNode [2023-08-25 03:15:54,005 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 03:15:54,006 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 03:15:54,006 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 03:15:54,006 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 03:15:54,011 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:15:54" (1/1) ... [2023-08-25 03:15:54,022 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:15:54" (1/1) ... [2023-08-25 03:15:54,040 INFO L138 Inliner]: procedures = 159, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 30 [2023-08-25 03:15:54,041 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 03:15:54,043 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 03:15:54,043 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 03:15:54,043 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 03:15:54,049 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:15:54" (1/1) ... [2023-08-25 03:15:54,049 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:15:54" (1/1) ... [2023-08-25 03:15:54,062 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:15:54" (1/1) ... [2023-08-25 03:15:54,062 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:15:54" (1/1) ... [2023-08-25 03:15:54,065 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:15:54" (1/1) ... [2023-08-25 03:15:54,066 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:15:54" (1/1) ... [2023-08-25 03:15:54,067 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:15:54" (1/1) ... [2023-08-25 03:15:54,068 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:15:54" (1/1) ... [2023-08-25 03:15:54,069 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 03:15:54,070 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 03:15:54,070 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 03:15:54,070 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 03:15:54,071 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:15:54" (1/1) ... [2023-08-25 03:15:54,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 03:15:54,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 03:15:54,105 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 03:15:54,127 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 03:15:54,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 03:15:54,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 03:15:54,151 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-25 03:15:54,152 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-25 03:15:54,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 03:15:54,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 03:15:54,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 03:15:54,153 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 03:15:54,247 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 03:15:54,249 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 03:15:54,343 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 03:15:54,348 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 03:15:54,348 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-25 03:15:54,349 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 03:15:54 BoogieIcfgContainer [2023-08-25 03:15:54,350 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 03:15:54,352 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 03:15:54,352 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 03:15:54,354 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 03:15:54,354 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 03:15:53" (1/3) ... [2023-08-25 03:15:54,355 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dad32d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 03:15:54, skipping insertion in model container [2023-08-25 03:15:54,355 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 03:15:54" (2/3) ... [2023-08-25 03:15:54,355 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dad32d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 03:15:54, skipping insertion in model container [2023-08-25 03:15:54,355 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 03:15:54" (3/3) ... [2023-08-25 03:15:54,368 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_25-single_acc.i [2023-08-25 03:15:54,384 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 03:15:54,384 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-25 03:15:54,384 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 03:15:54,462 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-25 03:15:54,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 57 transitions, 124 flow [2023-08-25 03:15:54,546 INFO L124 PetriNetUnfolderBase]: 0/55 cut-off events. [2023-08-25 03:15:54,546 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 03:15:54,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 55 events. 0/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 71 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-08-25 03:15:54,549 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 57 transitions, 124 flow [2023-08-25 03:15:54,553 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 55 transitions, 116 flow [2023-08-25 03:15:54,556 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 03:15:54,570 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 55 transitions, 116 flow [2023-08-25 03:15:54,578 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 55 transitions, 116 flow [2023-08-25 03:15:54,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 55 transitions, 116 flow [2023-08-25 03:15:54,602 INFO L124 PetriNetUnfolderBase]: 0/55 cut-off events. [2023-08-25 03:15:54,602 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 03:15:54,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 55 events. 0/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 71 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-08-25 03:15:54,604 INFO L119 LiptonReduction]: Number of co-enabled transitions 1064 [2023-08-25 03:15:55,607 INFO L134 LiptonReduction]: Checked pairs total: 2517 [2023-08-25 03:15:55,607 INFO L136 LiptonReduction]: Total number of compositions: 34 [2023-08-25 03:15:55,622 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 03:15:55,630 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;@3f5db2b9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 03:15:55,630 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-08-25 03:15:55,632 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 03:15:55,632 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-08-25 03:15:55,632 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 03:15:55,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:15:55,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-25 03:15:55,633 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-25 03:15:55,637 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:15:55,638 INFO L85 PathProgramCache]: Analyzing trace with hash 5477118, now seen corresponding path program 1 times [2023-08-25 03:15:55,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:15:55,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248101925] [2023-08-25 03:15:55,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:15:55,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:15:55,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 03:15:55,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 03:15:55,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 03:15:55,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248101925] [2023-08-25 03:15:55,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248101925] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 03:15:55,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 03:15:55,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 03:15:55,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852289738] [2023-08-25 03:15:55,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 03:15:55,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 03:15:55,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 03:15:55,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 03:15:55,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 03:15:55,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 91 [2023-08-25 03:15:55,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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) [2023-08-25 03:15:55,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 03:15:55,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 91 [2023-08-25 03:15:55,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 03:15:56,022 INFO L124 PetriNetUnfolderBase]: 162/341 cut-off events. [2023-08-25 03:15:56,023 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-08-25 03:15:56,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 664 conditions, 341 events. 162/341 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1558 event pairs, 76 based on Foata normal form. 0/284 useless extension candidates. Maximal degree in co-relation 654. Up to 170 conditions per place. [2023-08-25 03:15:56,030 INFO L140 encePairwiseOnDemand]: 83/91 looper letters, 26 selfloop transitions, 6 changer transitions 0/35 dead transitions. [2023-08-25 03:15:56,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 35 transitions, 143 flow [2023-08-25 03:15:56,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 03:15:56,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 03:15:56,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 163 transitions. [2023-08-25 03:15:56,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5970695970695971 [2023-08-25 03:15:56,043 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 163 transitions. [2023-08-25 03:15:56,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 163 transitions. [2023-08-25 03:15:56,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 03:15:56,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 163 transitions. [2023-08-25 03:15:56,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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) [2023-08-25 03:15:56,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 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) [2023-08-25 03:15:56,056 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 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) [2023-08-25 03:15:56,058 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 48 flow. Second operand 3 states and 163 transitions. [2023-08-25 03:15:56,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 35 transitions, 143 flow [2023-08-25 03:15:56,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 35 transitions, 140 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 03:15:56,062 INFO L231 Difference]: Finished difference. Result has 30 places, 27 transitions, 98 flow [2023-08-25 03:15:56,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=30, PETRI_TRANSITIONS=27} [2023-08-25 03:15:56,067 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 2 predicate places. [2023-08-25 03:15:56,067 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 27 transitions, 98 flow [2023-08-25 03:15:56,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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) [2023-08-25 03:15:56,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:15:56,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 03:15:56,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 03:15:56,068 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-25 03:15:56,069 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:15:56,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1233893638, now seen corresponding path program 1 times [2023-08-25 03:15:56,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:15:56,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926012635] [2023-08-25 03:15:56,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:15:56,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:15:56,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 03:15:56,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 03:15:56,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 03:15:56,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926012635] [2023-08-25 03:15:56,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926012635] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 03:15:56,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 03:15:56,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 03:15:56,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762940570] [2023-08-25 03:15:56,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 03:15:56,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 03:15:56,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 03:15:56,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 03:15:56,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 03:15:56,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 91 [2023-08-25 03:15:56,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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) [2023-08-25 03:15:56,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 03:15:56,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 91 [2023-08-25 03:15:56,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 03:15:56,230 INFO L124 PetriNetUnfolderBase]: 158/329 cut-off events. [2023-08-25 03:15:56,230 INFO L125 PetriNetUnfolderBase]: For 152/158 co-relation queries the response was YES. [2023-08-25 03:15:56,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 814 conditions, 329 events. 158/329 cut-off events. For 152/158 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1415 event pairs, 104 based on Foata normal form. 2/294 useless extension candidates. Maximal degree in co-relation 804. Up to 260 conditions per place. [2023-08-25 03:15:56,233 INFO L140 encePairwiseOnDemand]: 86/91 looper letters, 28 selfloop transitions, 6 changer transitions 1/38 dead transitions. [2023-08-25 03:15:56,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 38 transitions, 208 flow [2023-08-25 03:15:56,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 03:15:56,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 03:15:56,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 152 transitions. [2023-08-25 03:15:56,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5567765567765568 [2023-08-25 03:15:56,235 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 152 transitions. [2023-08-25 03:15:56,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 152 transitions. [2023-08-25 03:15:56,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 03:15:56,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 152 transitions. [2023-08-25 03:15:56,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 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) [2023-08-25 03:15:56,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 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) [2023-08-25 03:15:56,237 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 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) [2023-08-25 03:15:56,237 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 98 flow. Second operand 3 states and 152 transitions. [2023-08-25 03:15:56,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 38 transitions, 208 flow [2023-08-25 03:15:56,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 38 transitions, 190 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 03:15:56,240 INFO L231 Difference]: Finished difference. Result has 31 places, 31 transitions, 128 flow [2023-08-25 03:15:56,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=31, PETRI_TRANSITIONS=31} [2023-08-25 03:15:56,241 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 3 predicate places. [2023-08-25 03:15:56,241 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 31 transitions, 128 flow [2023-08-25 03:15:56,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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) [2023-08-25 03:15:56,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:15:56,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 03:15:56,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 03:15:56,242 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-25 03:15:56,242 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:15:56,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1729642656, now seen corresponding path program 1 times [2023-08-25 03:15:56,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:15:56,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789700733] [2023-08-25 03:15:56,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:15:56,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:15:56,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 03:15:56,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 03:15:56,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 03:15:56,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789700733] [2023-08-25 03:15:56,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789700733] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 03:15:56,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 03:15:56,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 03:15:56,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356731677] [2023-08-25 03:15:56,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 03:15:56,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 03:15:56,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 03:15:56,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 03:15:56,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 03:15:56,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 91 [2023-08-25 03:15:56,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 31 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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) [2023-08-25 03:15:56,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 03:15:56,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 91 [2023-08-25 03:15:56,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 03:15:56,372 INFO L124 PetriNetUnfolderBase]: 144/311 cut-off events. [2023-08-25 03:15:56,372 INFO L125 PetriNetUnfolderBase]: For 179/213 co-relation queries the response was YES. [2023-08-25 03:15:56,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 817 conditions, 311 events. 144/311 cut-off events. For 179/213 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1343 event pairs, 80 based on Foata normal form. 2/284 useless extension candidates. Maximal degree in co-relation 806. Up to 234 conditions per place. [2023-08-25 03:15:56,375 INFO L140 encePairwiseOnDemand]: 86/91 looper letters, 25 selfloop transitions, 7 changer transitions 6/41 dead transitions. [2023-08-25 03:15:56,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 41 transitions, 244 flow [2023-08-25 03:15:56,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 03:15:56,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 03:15:56,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 151 transitions. [2023-08-25 03:15:56,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5531135531135531 [2023-08-25 03:15:56,377 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 151 transitions. [2023-08-25 03:15:56,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 151 transitions. [2023-08-25 03:15:56,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 03:15:56,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 151 transitions. [2023-08-25 03:15:56,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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) [2023-08-25 03:15:56,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 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) [2023-08-25 03:15:56,380 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 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) [2023-08-25 03:15:56,380 INFO L175 Difference]: Start difference. First operand has 31 places, 31 transitions, 128 flow. Second operand 3 states and 151 transitions. [2023-08-25 03:15:56,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 41 transitions, 244 flow [2023-08-25 03:15:56,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 41 transitions, 236 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 03:15:56,383 INFO L231 Difference]: Finished difference. Result has 33 places, 31 transitions, 149 flow [2023-08-25 03:15:56,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=149, PETRI_PLACES=33, PETRI_TRANSITIONS=31} [2023-08-25 03:15:56,384 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 5 predicate places. [2023-08-25 03:15:56,384 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 31 transitions, 149 flow [2023-08-25 03:15:56,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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) [2023-08-25 03:15:56,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 03:15:56,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 03:15:56,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 03:15:56,385 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-25 03:15:56,385 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 03:15:56,385 INFO L85 PathProgramCache]: Analyzing trace with hash -536329364, now seen corresponding path program 1 times [2023-08-25 03:15:56,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 03:15:56,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892187473] [2023-08-25 03:15:56,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 03:15:56,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 03:15:56,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 03:15:56,403 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 03:15:56,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 03:15:56,427 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 03:15:56,427 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 03:15:56,428 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 8 remaining) [2023-08-25 03:15:56,430 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 8 remaining) [2023-08-25 03:15:56,430 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 8 remaining) [2023-08-25 03:15:56,430 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (4 of 8 remaining) [2023-08-25 03:15:56,431 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 8 remaining) [2023-08-25 03:15:56,431 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (2 of 8 remaining) [2023-08-25 03:15:56,431 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 8 remaining) [2023-08-25 03:15:56,431 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (0 of 8 remaining) [2023-08-25 03:15:56,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 03:15:56,432 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-25 03:15:56,437 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-25 03:15:56,437 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-25 03:15:56,456 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 03:15:56 BasicIcfg [2023-08-25 03:15:56,456 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-25 03:15:56,457 INFO L158 Benchmark]: Toolchain (without parser) took 2785.52ms. Allocated memory was 356.5MB in the beginning and 432.0MB in the end (delta: 75.5MB). Free memory was 331.0MB in the beginning and 381.9MB in the end (delta: -50.8MB). Peak memory consumption was 25.1MB. Max. memory is 16.0GB. [2023-08-25 03:15:56,457 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 356.5MB. Free memory was 332.9MB in the beginning and 332.7MB in the end (delta: 144.5kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-25 03:15:56,458 INFO L158 Benchmark]: CACSL2BoogieTranslator took 333.11ms. Allocated memory is still 356.5MB. Free memory was 331.0MB in the beginning and 312.8MB in the end (delta: 18.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-25 03:15:56,458 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.31ms. Allocated memory is still 356.5MB. Free memory was 312.8MB in the beginning and 311.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 03:15:56,458 INFO L158 Benchmark]: Boogie Preprocessor took 26.58ms. Allocated memory is still 356.5MB. Free memory was 310.8MB in the beginning and 309.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 03:15:56,459 INFO L158 Benchmark]: RCFGBuilder took 279.96ms. Allocated memory is still 356.5MB. Free memory was 309.6MB in the beginning and 298.6MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-25 03:15:56,459 INFO L158 Benchmark]: TraceAbstraction took 2104.39ms. Allocated memory was 356.5MB in the beginning and 432.0MB in the end (delta: 75.5MB). Free memory was 298.2MB in the beginning and 381.9MB in the end (delta: -83.7MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-25 03:15:56,461 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 356.5MB. Free memory was 332.9MB in the beginning and 332.7MB in the end (delta: 144.5kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 333.11ms. Allocated memory is still 356.5MB. Free memory was 331.0MB in the beginning and 312.8MB in the end (delta: 18.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 35.31ms. Allocated memory is still 356.5MB. Free memory was 312.8MB in the beginning and 311.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 26.58ms. Allocated memory is still 356.5MB. Free memory was 310.8MB in the beginning and 309.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 279.96ms. Allocated memory is still 356.5MB. Free memory was 309.6MB in the beginning and 298.6MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * TraceAbstraction took 2104.39ms. Allocated memory was 356.5MB in the beginning and 432.0MB in the end (delta: 75.5MB). Free memory was 298.2MB in the beginning and 381.9MB in the end (delta: -83.7MB). There was no memory consumed. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.0s, 62 PlacesBefore, 28 PlacesAfterwards, 55 TransitionsBefore, 21 TransitionsAfterwards, 1064 CoEnabledTransitionPairs, 4 FixpointIterations, 10 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 34 TotalNumberOfCompositions, 2517 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1181, independent: 1048, independent conditional: 0, independent unconditional: 1048, dependent: 133, dependent conditional: 0, dependent unconditional: 133, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 547, independent: 519, independent conditional: 0, independent unconditional: 519, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1181, independent: 529, independent conditional: 0, independent unconditional: 529, dependent: 105, dependent conditional: 0, dependent unconditional: 105, unknown: 547, unknown conditional: 0, unknown unconditional: 547] , Statistics on independence cache: Total cache size (in pairs): 76, Positive cache size: 61, Positive conditional cache size: 0, Positive unconditional cache size: 61, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - DataRaceFoundResult [Line: 681]: Data race detected Data race detected The following path leads to a data race: [L679] 0 int x; [L685] 0 pthread_t id1, id2; [L686] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t_fun, ((void *)0)) VAL [arg={0:0}, id1={2:0}, id2={3:0}, pthread_create(&id1, ((void *)0), t_fun, ((void *)0))=-2, x=0] [L681] 1 x++ VAL [arg={0:0}, arg={0:0}, x=0] [L681] 1 x++ VAL [arg={0:0}, arg={0:0}, x++=0, x=1] [L687] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t_fun, ((void *)0)) VAL [arg={0:0}, arg={0:0}, id1={2:0}, id2={3:0}, pthread_create(&id2, ((void *)0), t_fun, ((void *)0))=-1, x++=0, x=1] [L681] 2 x++ VAL [arg={0:0}, arg={0:0}, x++=0, x++=5, x=1] Now there is a data race on ~x~0 between C: x++ [681] and C: x++ [681] - UnprovableResult [Line: 686]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 687]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 681]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 4 procedures, 75 locations, 8 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.9s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 23 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23 mSDsluCounter, 18 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 112 IncrementalHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 18 mSDtfsCounter, 112 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=149occurred in iteration=3, InterpolantAutomatonStates: 9, 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, 0.2s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 25 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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! [2023-08-25 03:15:56,489 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...