/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/pthread-ext/14_spin2003.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 18:29:36,575 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 18:29:36,621 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 [2023-08-24 18:29:36,625 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 18:29:36,625 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 18:29:36,653 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 18:29:36,653 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 18:29:36,654 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 18:29:36,654 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 18:29:36,655 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 18:29:36,655 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 18:29:36,655 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 18:29:36,656 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 18:29:36,656 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 18:29:36,656 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 18:29:36,657 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 18:29:36,657 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 18:29:36,657 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 18:29:36,658 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 18:29:36,658 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 18:29:36,658 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 18:29:36,659 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 18:29:36,659 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 18:29:36,660 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 18:29:36,660 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 18:29:36,660 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 18:29:36,661 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 18:29:36,661 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 18:29:36,662 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 18:29:36,662 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 18:29:36,662 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 18:29:36,663 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 18:29:36,663 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 18:29:36,663 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 18:29:36,664 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 18:29:36,664 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-24 18:29:36,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 18:29:36,995 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 18:29:36,997 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 18:29:36,999 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 18:29:37,000 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 18:29:37,002 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/14_spin2003.i [2023-08-24 18:29:38,221 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 18:29:38,475 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 18:29:38,475 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/14_spin2003.i [2023-08-24 18:29:38,501 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eecbe7068/e63872ad9fe545659a0688d9be6d9552/FLAG50465d5df [2023-08-24 18:29:38,515 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eecbe7068/e63872ad9fe545659a0688d9be6d9552 [2023-08-24 18:29:38,520 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 18:29:38,523 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 18:29:38,525 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 18:29:38,526 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 18:29:38,528 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 18:29:38,529 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 06:29:38" (1/1) ... [2023-08-24 18:29:38,530 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a50893e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:29:38, skipping insertion in model container [2023-08-24 18:29:38,530 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 06:29:38" (1/1) ... [2023-08-24 18:29:38,578 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 18:29:38,907 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 18:29:38,920 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 18:29:38,951 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [253] [2023-08-24 18:29:38,953 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [253] [2023-08-24 18:29:38,975 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 18:29:39,014 INFO L206 MainTranslator]: Completed translation [2023-08-24 18:29:39,014 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:29:39 WrapperNode [2023-08-24 18:29:39,014 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 18:29:39,015 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 18:29:39,015 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 18:29:39,015 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 18:29:39,021 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:29:39" (1/1) ... [2023-08-24 18:29:39,049 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:29:39" (1/1) ... [2023-08-24 18:29:39,065 INFO L138 Inliner]: procedures = 169, calls = 15, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 72 [2023-08-24 18:29:39,066 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 18:29:39,066 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 18:29:39,066 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 18:29:39,066 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 18:29:39,073 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:29:39" (1/1) ... [2023-08-24 18:29:39,073 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:29:39" (1/1) ... [2023-08-24 18:29:39,077 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:29:39" (1/1) ... [2023-08-24 18:29:39,078 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:29:39" (1/1) ... [2023-08-24 18:29:39,082 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:29:39" (1/1) ... [2023-08-24 18:29:39,085 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:29:39" (1/1) ... [2023-08-24 18:29:39,086 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:29:39" (1/1) ... [2023-08-24 18:29:39,087 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:29:39" (1/1) ... [2023-08-24 18:29:39,089 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 18:29:39,089 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 18:29:39,090 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 18:29:39,090 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 18:29:39,090 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:29:39" (1/1) ... [2023-08-24 18:29:39,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 18:29:39,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 18:29:39,130 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) [2023-08-24 18:29:39,151 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 [2023-08-24 18:29:39,165 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-24 18:29:39,165 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-24 18:29:39,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 18:29:39,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 18:29:39,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 18:29:39,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 18:29:39,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 18:29:39,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 18:29:39,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 18:29:39,167 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 18:29:39,282 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 18:29:39,284 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 18:29:39,396 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 18:29:39,444 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 18:29:39,444 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-24 18:29:39,446 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 06:29:39 BoogieIcfgContainer [2023-08-24 18:29:39,446 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 18:29:39,448 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 18:29:39,448 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 18:29:39,450 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 18:29:39,451 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 06:29:38" (1/3) ... [2023-08-24 18:29:39,451 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72a3aaab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 06:29:39, skipping insertion in model container [2023-08-24 18:29:39,451 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:29:39" (2/3) ... [2023-08-24 18:29:39,452 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72a3aaab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 06:29:39, skipping insertion in model container [2023-08-24 18:29:39,452 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 06:29:39" (3/3) ... [2023-08-24 18:29:39,453 INFO L112 eAbstractionObserver]: Analyzing ICFG 14_spin2003.i [2023-08-24 18:29:39,471 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 18:29:39,472 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-24 18:29:39,472 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 18:29:39,530 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 18:29:39,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 59 transitions, 123 flow [2023-08-24 18:29:39,616 INFO L124 PetriNetUnfolderBase]: 4/69 cut-off events. [2023-08-24 18:29:39,616 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 18:29:39,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 69 events. 4/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 80 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 45. Up to 4 conditions per place. [2023-08-24 18:29:39,625 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 59 transitions, 123 flow [2023-08-24 18:29:39,629 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 59 transitions, 123 flow [2023-08-24 18:29:39,632 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 18:29:39,644 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 59 transitions, 123 flow [2023-08-24 18:29:39,649 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 59 places, 59 transitions, 123 flow [2023-08-24 18:29:39,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 59 transitions, 123 flow [2023-08-24 18:29:39,680 INFO L124 PetriNetUnfolderBase]: 4/69 cut-off events. [2023-08-24 18:29:39,680 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 18:29:39,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 69 events. 4/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 80 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 45. Up to 4 conditions per place. [2023-08-24 18:29:39,683 INFO L119 LiptonReduction]: Number of co-enabled transitions 858 [2023-08-24 18:29:41,098 INFO L134 LiptonReduction]: Checked pairs total: 850 [2023-08-24 18:29:41,099 INFO L136 LiptonReduction]: Total number of compositions: 69 [2023-08-24 18:29:41,110 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 18:29:41,115 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;@3fc36ec3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 18:29:41,115 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-08-24 18:29:41,117 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 18:29:41,118 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-08-24 18:29:41,118 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 18:29:41,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:29:41,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-24 18:29:41,119 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2023-08-24 18:29:41,123 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:29:41,123 INFO L85 PathProgramCache]: Analyzing trace with hash 10108789, now seen corresponding path program 1 times [2023-08-24 18:29:41,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:29:41,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193568878] [2023-08-24 18:29:41,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:29:41,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:29:41,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:29:41,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:29:41,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:29:41,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193568878] [2023-08-24 18:29:41,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193568878] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:29:41,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:29:41,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 18:29:41,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52416966] [2023-08-24 18:29:41,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:29:41,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-24 18:29:41,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:29:41,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-24 18:29:41,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-24 18:29:41,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 128 [2023-08-24 18:29:41,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 15 transitions, 35 flow. Second operand has 2 states, 2 states have (on average 49.0) internal successors, (98), 2 states have internal predecessors, (98), 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) [2023-08-24 18:29:41,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:29:41,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 128 [2023-08-24 18:29:41,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:29:41,332 INFO L124 PetriNetUnfolderBase]: 2/11 cut-off events. [2023-08-24 18:29:41,332 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 18:29:41,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 11 events. 2/11 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 9 event pairs, 2 based on Foata normal form. 0/11 useless extension candidates. Maximal degree in co-relation 14. Up to 11 conditions per place. [2023-08-24 18:29:41,333 INFO L140 encePairwiseOnDemand]: 119/128 looper letters, 5 selfloop transitions, 0 changer transitions 0/6 dead transitions. [2023-08-24 18:29:41,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 10 places, 6 transitions, 27 flow [2023-08-24 18:29:41,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-24 18:29:41,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-24 18:29:41,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 108 transitions. [2023-08-24 18:29:41,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2023-08-24 18:29:41,345 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 108 transitions. [2023-08-24 18:29:41,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 108 transitions. [2023-08-24 18:29:41,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:29:41,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 108 transitions. [2023-08-24 18:29:41,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 54.0) internal successors, (108), 2 states have internal predecessors, (108), 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) [2023-08-24 18:29:41,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 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) [2023-08-24 18:29:41,353 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 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) [2023-08-24 18:29:41,355 INFO L175 Difference]: Start difference. First operand has 18 places, 15 transitions, 35 flow. Second operand 2 states and 108 transitions. [2023-08-24 18:29:41,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 10 places, 6 transitions, 27 flow [2023-08-24 18:29:41,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 10 places, 6 transitions, 27 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 18:29:41,358 INFO L231 Difference]: Finished difference. Result has 10 places, 6 transitions, 17 flow [2023-08-24 18:29:41,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=17, PETRI_DIFFERENCE_MINUEND_PLACES=9, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=17, PETRI_PLACES=10, PETRI_TRANSITIONS=6} [2023-08-24 18:29:41,362 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, -8 predicate places. [2023-08-24 18:29:41,362 INFO L495 AbstractCegarLoop]: Abstraction has has 10 places, 6 transitions, 17 flow [2023-08-24 18:29:41,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 49.0) internal successors, (98), 2 states have internal predecessors, (98), 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) [2023-08-24 18:29:41,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:29:41,363 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-24 18:29:41,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 18:29:41,364 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2023-08-24 18:29:41,364 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:29:41,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1124624432, now seen corresponding path program 1 times [2023-08-24 18:29:41,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:29:41,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434031182] [2023-08-24 18:29:41,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:29:41,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:29:41,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 18:29:41,385 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 18:29:41,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 18:29:41,410 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 18:29:41,410 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 18:29:41,412 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-08-24 18:29:41,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2023-08-24 18:29:41,414 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2023-08-24 18:29:41,414 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2023-08-24 18:29:41,414 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2023-08-24 18:29:41,414 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2023-08-24 18:29:41,415 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2023-08-24 18:29:41,415 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2023-08-24 18:29:41,415 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONASSERT (8 of 17 remaining) [2023-08-24 18:29:41,415 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2023-08-24 18:29:41,416 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2023-08-24 18:29:41,416 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2023-08-24 18:29:41,416 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2023-08-24 18:29:41,416 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2023-08-24 18:29:41,416 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2023-08-24 18:29:41,417 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2023-08-24 18:29:41,417 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONASSERT (0 of 17 remaining) [2023-08-24 18:29:41,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 18:29:41,417 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-24 18:29:41,420 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 18:29:41,420 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-24 18:29:41,440 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 18:29:41,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 93 transitions, 198 flow [2023-08-24 18:29:41,483 INFO L124 PetriNetUnfolderBase]: 7/115 cut-off events. [2023-08-24 18:29:41,483 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 18:29:41,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 115 events. 7/115 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 237 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 78. Up to 6 conditions per place. [2023-08-24 18:29:41,485 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 93 transitions, 198 flow [2023-08-24 18:29:41,487 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 93 transitions, 198 flow [2023-08-24 18:29:41,487 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 18:29:41,487 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 93 transitions, 198 flow [2023-08-24 18:29:41,487 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 93 places, 93 transitions, 198 flow [2023-08-24 18:29:41,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 93 transitions, 198 flow [2023-08-24 18:29:41,516 INFO L124 PetriNetUnfolderBase]: 7/115 cut-off events. [2023-08-24 18:29:41,517 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 18:29:41,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 115 events. 7/115 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 237 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 78. Up to 6 conditions per place. [2023-08-24 18:29:41,524 INFO L119 LiptonReduction]: Number of co-enabled transitions 3960 [2023-08-24 18:29:42,514 INFO L134 LiptonReduction]: Checked pairs total: 13975 [2023-08-24 18:29:42,514 INFO L136 LiptonReduction]: Total number of compositions: 66 [2023-08-24 18:29:42,516 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 18:29:42,517 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;@3fc36ec3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 18:29:42,517 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-08-24 18:29:42,519 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 18:29:42,519 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-08-24 18:29:42,519 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 18:29:42,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:29:42,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-24 18:29:42,519 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-24 18:29:42,520 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:29:42,520 INFO L85 PathProgramCache]: Analyzing trace with hash 16205859, now seen corresponding path program 1 times [2023-08-24 18:29:42,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:29:42,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615440392] [2023-08-24 18:29:42,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:29:42,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:29:42,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:29:42,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:29:42,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:29:42,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615440392] [2023-08-24 18:29:42,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615440392] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:29:42,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:29:42,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 18:29:42,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315242105] [2023-08-24 18:29:42,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:29:42,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-24 18:29:42,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:29:42,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-24 18:29:42,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-24 18:29:42,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 159 [2023-08-24 18:29:42,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 46 transitions, 104 flow. Second operand has 2 states, 2 states have (on average 73.0) internal successors, (146), 2 states have internal predecessors, (146), 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) [2023-08-24 18:29:42,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:29:42,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 159 [2023-08-24 18:29:42,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:29:42,647 INFO L124 PetriNetUnfolderBase]: 224/558 cut-off events. [2023-08-24 18:29:42,647 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2023-08-24 18:29:42,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1013 conditions, 558 events. 224/558 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3198 event pairs, 224 based on Foata normal form. 18/503 useless extension candidates. Maximal degree in co-relation 152. Up to 407 conditions per place. [2023-08-24 18:29:42,653 INFO L140 encePairwiseOnDemand]: 150/159 looper letters, 20 selfloop transitions, 0 changer transitions 0/37 dead transitions. [2023-08-24 18:29:42,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 37 transitions, 126 flow [2023-08-24 18:29:42,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-24 18:29:42,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-24 18:29:42,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 171 transitions. [2023-08-24 18:29:42,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5377358490566038 [2023-08-24 18:29:42,659 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 171 transitions. [2023-08-24 18:29:42,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 171 transitions. [2023-08-24 18:29:42,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:29:42,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 171 transitions. [2023-08-24 18:29:42,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 85.5) internal successors, (171), 2 states have internal predecessors, (171), 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) [2023-08-24 18:29:42,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 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) [2023-08-24 18:29:42,666 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 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) [2023-08-24 18:29:42,666 INFO L175 Difference]: Start difference. First operand has 51 places, 46 transitions, 104 flow. Second operand 2 states and 171 transitions. [2023-08-24 18:29:42,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 37 transitions, 126 flow [2023-08-24 18:29:42,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 37 transitions, 124 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-24 18:29:42,669 INFO L231 Difference]: Finished difference. Result has 43 places, 37 transitions, 84 flow [2023-08-24 18:29:42,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=84, PETRI_PLACES=43, PETRI_TRANSITIONS=37} [2023-08-24 18:29:42,670 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -8 predicate places. [2023-08-24 18:29:42,670 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 37 transitions, 84 flow [2023-08-24 18:29:42,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 73.0) internal successors, (146), 2 states have internal predecessors, (146), 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) [2023-08-24 18:29:42,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:29:42,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:29:42,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 18:29:42,671 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-24 18:29:42,671 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:29:42,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1752903796, now seen corresponding path program 1 times [2023-08-24 18:29:42,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:29:42,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32005875] [2023-08-24 18:29:42,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:29:42,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:29:42,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:29:42,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:29:42,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:29:42,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32005875] [2023-08-24 18:29:42,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32005875] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:29:42,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:29:42,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 18:29:42,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551748443] [2023-08-24 18:29:42,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:29:42,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 18:29:42,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:29:42,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 18:29:42,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 18:29:42,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 159 [2023-08-24 18:29:42,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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) [2023-08-24 18:29:42,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:29:42,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 159 [2023-08-24 18:29:42,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:29:42,868 INFO L124 PetriNetUnfolderBase]: 713/1262 cut-off events. [2023-08-24 18:29:42,868 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2023-08-24 18:29:42,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2559 conditions, 1262 events. 713/1262 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 7116 event pairs, 637 based on Foata normal form. 0/997 useless extension candidates. Maximal degree in co-relation 2554. Up to 1168 conditions per place. [2023-08-24 18:29:42,875 INFO L140 encePairwiseOnDemand]: 153/159 looper letters, 46 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2023-08-24 18:29:42,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 55 transitions, 227 flow [2023-08-24 18:29:42,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 18:29:42,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 18:29:42,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 205 transitions. [2023-08-24 18:29:42,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.429769392033543 [2023-08-24 18:29:42,877 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 205 transitions. [2023-08-24 18:29:42,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 205 transitions. [2023-08-24 18:29:42,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:29:42,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 205 transitions. [2023-08-24 18:29:42,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 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) [2023-08-24 18:29:42,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 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) [2023-08-24 18:29:42,879 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 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) [2023-08-24 18:29:42,880 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 84 flow. Second operand 3 states and 205 transitions. [2023-08-24 18:29:42,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 55 transitions, 227 flow [2023-08-24 18:29:42,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 55 transitions, 227 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 18:29:42,881 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 117 flow [2023-08-24 18:29:42,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2023-08-24 18:29:42,882 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -5 predicate places. [2023-08-24 18:29:42,882 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 117 flow [2023-08-24 18:29:42,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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) [2023-08-24 18:29:42,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:29:42,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:29:42,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 18:29:42,883 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-24 18:29:42,883 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:29:42,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1748643924, now seen corresponding path program 1 times [2023-08-24 18:29:42,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:29:42,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604786238] [2023-08-24 18:29:42,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:29:42,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:29:42,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:29:42,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:29:42,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:29:42,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604786238] [2023-08-24 18:29:42,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604786238] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:29:42,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:29:42,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 18:29:42,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253605738] [2023-08-24 18:29:42,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:29:42,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 18:29:42,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:29:42,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 18:29:42,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 18:29:42,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 159 [2023-08-24 18:29:42,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 117 flow. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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) [2023-08-24 18:29:42,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:29:42,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 159 [2023-08-24 18:29:42,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:29:43,106 INFO L124 PetriNetUnfolderBase]: 776/1368 cut-off events. [2023-08-24 18:29:43,110 INFO L125 PetriNetUnfolderBase]: For 207/207 co-relation queries the response was YES. [2023-08-24 18:29:43,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3028 conditions, 1368 events. 776/1368 cut-off events. For 207/207 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 7826 event pairs, 594 based on Foata normal form. 0/1096 useless extension candidates. Maximal degree in co-relation 3021. Up to 1173 conditions per place. [2023-08-24 18:29:43,120 INFO L140 encePairwiseOnDemand]: 152/159 looper letters, 50 selfloop transitions, 6 changer transitions 0/60 dead transitions. [2023-08-24 18:29:43,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 60 transitions, 278 flow [2023-08-24 18:29:43,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 18:29:43,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 18:29:43,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 206 transitions. [2023-08-24 18:29:43,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43186582809224316 [2023-08-24 18:29:43,121 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 206 transitions. [2023-08-24 18:29:43,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 206 transitions. [2023-08-24 18:29:43,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:29:43,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 206 transitions. [2023-08-24 18:29:43,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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) [2023-08-24 18:29:43,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 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) [2023-08-24 18:29:43,124 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 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) [2023-08-24 18:29:43,124 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 117 flow. Second operand 3 states and 206 transitions. [2023-08-24 18:29:43,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 60 transitions, 278 flow [2023-08-24 18:29:43,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 60 transitions, 273 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 18:29:43,127 INFO L231 Difference]: Finished difference. Result has 49 places, 46 transitions, 164 flow [2023-08-24 18:29:43,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=49, PETRI_TRANSITIONS=46} [2023-08-24 18:29:43,127 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -2 predicate places. [2023-08-24 18:29:43,127 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 46 transitions, 164 flow [2023-08-24 18:29:43,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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) [2023-08-24 18:29:43,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:29:43,128 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-24 18:29:43,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 18:29:43,128 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-24 18:29:43,128 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:29:43,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1649166149, now seen corresponding path program 1 times [2023-08-24 18:29:43,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:29:43,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650883048] [2023-08-24 18:29:43,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:29:43,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:29:43,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 18:29:43,153 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 18:29:43,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 18:29:43,174 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 18:29:43,174 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 18:29:43,174 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2023-08-24 18:29:43,174 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 25 remaining) [2023-08-24 18:29:43,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 25 remaining) [2023-08-24 18:29:43,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 25 remaining) [2023-08-24 18:29:43,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 25 remaining) [2023-08-24 18:29:43,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (19 of 25 remaining) [2023-08-24 18:29:43,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (18 of 25 remaining) [2023-08-24 18:29:43,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (17 of 25 remaining) [2023-08-24 18:29:43,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONASSERT (16 of 25 remaining) [2023-08-24 18:29:43,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 25 remaining) [2023-08-24 18:29:43,176 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 25 remaining) [2023-08-24 18:29:43,176 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 25 remaining) [2023-08-24 18:29:43,176 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 25 remaining) [2023-08-24 18:29:43,176 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (11 of 25 remaining) [2023-08-24 18:29:43,176 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (10 of 25 remaining) [2023-08-24 18:29:43,176 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (9 of 25 remaining) [2023-08-24 18:29:43,176 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONASSERT (8 of 25 remaining) [2023-08-24 18:29:43,176 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 25 remaining) [2023-08-24 18:29:43,177 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 25 remaining) [2023-08-24 18:29:43,177 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 25 remaining) [2023-08-24 18:29:43,177 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 25 remaining) [2023-08-24 18:29:43,177 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (3 of 25 remaining) [2023-08-24 18:29:43,177 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (2 of 25 remaining) [2023-08-24 18:29:43,177 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (1 of 25 remaining) [2023-08-24 18:29:43,177 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONASSERT (0 of 25 remaining) [2023-08-24 18:29:43,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 18:29:43,178 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-24 18:29:43,178 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 18:29:43,178 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-24 18:29:43,195 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 18:29:43,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 127 transitions, 275 flow [2023-08-24 18:29:43,234 INFO L124 PetriNetUnfolderBase]: 10/161 cut-off events. [2023-08-24 18:29:43,234 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-24 18:29:43,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 161 events. 10/161 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 411 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 119. Up to 8 conditions per place. [2023-08-24 18:29:43,235 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 127 transitions, 275 flow [2023-08-24 18:29:43,237 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 127 places, 127 transitions, 275 flow [2023-08-24 18:29:43,237 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 18:29:43,237 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 127 places, 127 transitions, 275 flow [2023-08-24 18:29:43,237 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 127 places, 127 transitions, 275 flow [2023-08-24 18:29:43,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 127 transitions, 275 flow [2023-08-24 18:29:43,253 INFO L124 PetriNetUnfolderBase]: 10/161 cut-off events. [2023-08-24 18:29:43,253 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-24 18:29:43,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 161 events. 10/161 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 411 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 119. Up to 8 conditions per place. [2023-08-24 18:29:43,259 INFO L119 LiptonReduction]: Number of co-enabled transitions 9306 [2023-08-24 18:29:44,299 INFO L134 LiptonReduction]: Checked pairs total: 41337 [2023-08-24 18:29:44,300 INFO L136 LiptonReduction]: Total number of compositions: 87 [2023-08-24 18:29:44,301 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 18:29:44,302 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;@3fc36ec3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 18:29:44,302 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2023-08-24 18:29:44,304 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 18:29:44,304 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-08-24 18:29:44,304 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 18:29:44,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:29:44,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-24 18:29:44,304 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-08-24 18:29:44,305 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:29:44,305 INFO L85 PathProgramCache]: Analyzing trace with hash 23898214, now seen corresponding path program 1 times [2023-08-24 18:29:44,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:29:44,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648331012] [2023-08-24 18:29:44,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:29:44,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:29:44,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:29:44,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:29:44,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:29:44,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648331012] [2023-08-24 18:29:44,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648331012] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:29:44,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:29:44,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 18:29:44,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360279614] [2023-08-24 18:29:44,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:29:44,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-24 18:29:44,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:29:44,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-24 18:29:44,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-24 18:29:44,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 214 [2023-08-24 18:29:44,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 68 transitions, 157 flow. Second operand has 2 states, 2 states have (on average 97.0) internal successors, (194), 2 states have internal predecessors, (194), 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) [2023-08-24 18:29:44,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:29:44,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 214 [2023-08-24 18:29:44,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:29:44,809 INFO L124 PetriNetUnfolderBase]: 3464/6492 cut-off events. [2023-08-24 18:29:44,809 INFO L125 PetriNetUnfolderBase]: For 595/595 co-relation queries the response was YES. [2023-08-24 18:29:44,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12050 conditions, 6492 events. 3464/6492 cut-off events. For 595/595 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 49713 event pairs, 3464 based on Foata normal form. 0/5430 useless extension candidates. Maximal degree in co-relation 1318. Up to 5105 conditions per place. [2023-08-24 18:29:44,854 INFO L140 encePairwiseOnDemand]: 199/214 looper letters, 29 selfloop transitions, 0 changer transitions 0/53 dead transitions. [2023-08-24 18:29:44,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 53 transitions, 185 flow [2023-08-24 18:29:44,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-24 18:29:44,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-24 18:29:44,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 234 transitions. [2023-08-24 18:29:44,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5467289719626168 [2023-08-24 18:29:44,856 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 234 transitions. [2023-08-24 18:29:44,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 234 transitions. [2023-08-24 18:29:44,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:29:44,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 234 transitions. [2023-08-24 18:29:44,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 117.0) internal successors, (234), 2 states have internal predecessors, (234), 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) [2023-08-24 18:29:44,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 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) [2023-08-24 18:29:44,858 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 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) [2023-08-24 18:29:44,859 INFO L175 Difference]: Start difference. First operand has 73 places, 68 transitions, 157 flow. Second operand 2 states and 234 transitions. [2023-08-24 18:29:44,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 53 transitions, 185 flow [2023-08-24 18:29:44,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 53 transitions, 179 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-24 18:29:44,861 INFO L231 Difference]: Finished difference. Result has 61 places, 53 transitions, 121 flow [2023-08-24 18:29:44,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=121, PETRI_PLACES=61, PETRI_TRANSITIONS=53} [2023-08-24 18:29:44,862 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -12 predicate places. [2023-08-24 18:29:44,862 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 121 flow [2023-08-24 18:29:44,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 97.0) internal successors, (194), 2 states have internal predecessors, (194), 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) [2023-08-24 18:29:44,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:29:44,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:29:44,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 18:29:44,863 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-08-24 18:29:44,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:29:44,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1012131152, now seen corresponding path program 1 times [2023-08-24 18:29:44,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:29:44,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057292523] [2023-08-24 18:29:44,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:29:44,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:29:44,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:29:44,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:29:44,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:29:44,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057292523] [2023-08-24 18:29:44,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057292523] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:29:44,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:29:44,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 18:29:44,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790698903] [2023-08-24 18:29:44,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:29:44,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 18:29:44,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:29:44,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 18:29:44,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 18:29:44,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 214 [2023-08-24 18:29:44,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 53 transitions, 121 flow. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 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) [2023-08-24 18:29:44,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:29:44,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 214 [2023-08-24 18:29:44,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:29:47,143 INFO L124 PetriNetUnfolderBase]: 21097/30438 cut-off events. [2023-08-24 18:29:47,144 INFO L125 PetriNetUnfolderBase]: For 833/833 co-relation queries the response was YES. [2023-08-24 18:29:47,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61651 conditions, 30438 events. 21097/30438 cut-off events. For 833/833 co-relation queries the response was YES. Maximal size of possible extension queue 1136. Compared 202325 event pairs, 19209 based on Foata normal form. 0/23729 useless extension candidates. Maximal degree in co-relation 61645. Up to 28702 conditions per place. [2023-08-24 18:29:47,352 INFO L140 encePairwiseOnDemand]: 205/214 looper letters, 76 selfloop transitions, 8 changer transitions 0/87 dead transitions. [2023-08-24 18:29:47,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 87 transitions, 367 flow [2023-08-24 18:29:47,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 18:29:47,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 18:29:47,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 283 transitions. [2023-08-24 18:29:47,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.440809968847352 [2023-08-24 18:29:47,354 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 283 transitions. [2023-08-24 18:29:47,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 283 transitions. [2023-08-24 18:29:47,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:29:47,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 283 transitions. [2023-08-24 18:29:47,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 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) [2023-08-24 18:29:47,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 214.0) internal successors, (856), 4 states have internal predecessors, (856), 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) [2023-08-24 18:29:47,357 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 214.0) internal successors, (856), 4 states have internal predecessors, (856), 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) [2023-08-24 18:29:47,357 INFO L175 Difference]: Start difference. First operand has 61 places, 53 transitions, 121 flow. Second operand 3 states and 283 transitions. [2023-08-24 18:29:47,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 87 transitions, 367 flow [2023-08-24 18:29:47,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 87 transitions, 367 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 18:29:47,362 INFO L231 Difference]: Finished difference. Result has 64 places, 60 transitions, 175 flow [2023-08-24 18:29:47,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=175, PETRI_PLACES=64, PETRI_TRANSITIONS=60} [2023-08-24 18:29:47,363 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -9 predicate places. [2023-08-24 18:29:47,363 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 60 transitions, 175 flow [2023-08-24 18:29:47,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 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) [2023-08-24 18:29:47,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:29:47,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:29:47,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-24 18:29:47,364 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-08-24 18:29:47,364 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:29:47,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1724832330, now seen corresponding path program 1 times [2023-08-24 18:29:47,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:29:47,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698132105] [2023-08-24 18:29:47,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:29:47,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:29:47,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:29:47,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:29:47,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:29:47,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698132105] [2023-08-24 18:29:47,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698132105] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:29:47,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:29:47,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 18:29:47,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502855602] [2023-08-24 18:29:47,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:29:47,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 18:29:47,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:29:47,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 18:29:47,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 18:29:47,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 214 [2023-08-24 18:29:47,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 60 transitions, 175 flow. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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) [2023-08-24 18:29:47,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:29:47,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 214 [2023-08-24 18:29:47,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:29:49,639 INFO L124 PetriNetUnfolderBase]: 23480/33826 cut-off events. [2023-08-24 18:29:49,639 INFO L125 PetriNetUnfolderBase]: For 5349/5349 co-relation queries the response was YES. [2023-08-24 18:29:49,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75069 conditions, 33826 events. 23480/33826 cut-off events. For 5349/5349 co-relation queries the response was YES. Maximal size of possible extension queue 1297. Compared 229574 event pairs, 19000 based on Foata normal form. 0/26613 useless extension candidates. Maximal degree in co-relation 75061. Up to 29951 conditions per place. [2023-08-24 18:29:49,867 INFO L140 encePairwiseOnDemand]: 204/214 looper letters, 83 selfloop transitions, 9 changer transitions 0/95 dead transitions. [2023-08-24 18:29:49,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 95 transitions, 451 flow [2023-08-24 18:29:49,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 18:29:49,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 18:29:49,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 284 transitions. [2023-08-24 18:29:49,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4423676012461059 [2023-08-24 18:29:49,869 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 284 transitions. [2023-08-24 18:29:49,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 284 transitions. [2023-08-24 18:29:49,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:29:49,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 284 transitions. [2023-08-24 18:29:49,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 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) [2023-08-24 18:29:49,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 214.0) internal successors, (856), 4 states have internal predecessors, (856), 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) [2023-08-24 18:29:49,873 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 214.0) internal successors, (856), 4 states have internal predecessors, (856), 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) [2023-08-24 18:29:49,873 INFO L175 Difference]: Start difference. First operand has 64 places, 60 transitions, 175 flow. Second operand 3 states and 284 transitions. [2023-08-24 18:29:49,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 95 transitions, 451 flow [2023-08-24 18:29:49,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 95 transitions, 443 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 18:29:49,881 INFO L231 Difference]: Finished difference. Result has 67 places, 68 transitions, 249 flow [2023-08-24 18:29:49,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=249, PETRI_PLACES=67, PETRI_TRANSITIONS=68} [2023-08-24 18:29:49,882 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -6 predicate places. [2023-08-24 18:29:49,882 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 68 transitions, 249 flow [2023-08-24 18:29:49,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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) [2023-08-24 18:29:49,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:29:49,883 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:29:49,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-24 18:29:49,883 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-08-24 18:29:49,883 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:29:49,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1172350414, now seen corresponding path program 1 times [2023-08-24 18:29:49,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:29:49,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053276383] [2023-08-24 18:29:49,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:29:49,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:29:49,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:29:49,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 18:29:49,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:29:49,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053276383] [2023-08-24 18:29:49,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053276383] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:29:49,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:29:49,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 18:29:49,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749303763] [2023-08-24 18:29:49,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:29:49,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 18:29:49,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:29:49,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 18:29:49,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 18:29:49,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 214 [2023-08-24 18:29:49,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 68 transitions, 249 flow. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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) [2023-08-24 18:29:49,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:29:49,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 214 [2023-08-24 18:29:49,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:29:51,842 INFO L124 PetriNetUnfolderBase]: 24536/35353 cut-off events. [2023-08-24 18:29:51,842 INFO L125 PetriNetUnfolderBase]: For 15388/15388 co-relation queries the response was YES. [2023-08-24 18:29:51,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86477 conditions, 35353 events. 24536/35353 cut-off events. For 15388/15388 co-relation queries the response was YES. Maximal size of possible extension queue 1369. Compared 240116 event pairs, 19700 based on Foata normal form. 0/28507 useless extension candidates. Maximal degree in co-relation 86468. Up to 33505 conditions per place. [2023-08-24 18:29:52,078 INFO L140 encePairwiseOnDemand]: 205/214 looper letters, 88 selfloop transitions, 14 changer transitions 0/105 dead transitions. [2023-08-24 18:29:52,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 105 transitions, 584 flow [2023-08-24 18:29:52,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 18:29:52,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 18:29:52,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 282 transitions. [2023-08-24 18:29:52,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4392523364485981 [2023-08-24 18:29:52,081 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 282 transitions. [2023-08-24 18:29:52,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 282 transitions. [2023-08-24 18:29:52,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:29:52,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 282 transitions. [2023-08-24 18:29:52,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 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) [2023-08-24 18:29:52,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 214.0) internal successors, (856), 4 states have internal predecessors, (856), 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) [2023-08-24 18:29:52,084 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 214.0) internal successors, (856), 4 states have internal predecessors, (856), 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) [2023-08-24 18:29:52,084 INFO L175 Difference]: Start difference. First operand has 67 places, 68 transitions, 249 flow. Second operand 3 states and 282 transitions. [2023-08-24 18:29:52,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 105 transitions, 584 flow [2023-08-24 18:29:52,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 105 transitions, 536 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-08-24 18:29:52,211 INFO L231 Difference]: Finished difference. Result has 68 places, 79 transitions, 333 flow [2023-08-24 18:29:52,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=333, PETRI_PLACES=68, PETRI_TRANSITIONS=79} [2023-08-24 18:29:52,213 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -5 predicate places. [2023-08-24 18:29:52,214 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 79 transitions, 333 flow [2023-08-24 18:29:52,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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) [2023-08-24 18:29:52,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:29:52,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:29:52,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-24 18:29:52,214 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err4ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-08-24 18:29:52,215 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:29:52,215 INFO L85 PathProgramCache]: Analyzing trace with hash 293530368, now seen corresponding path program 1 times [2023-08-24 18:29:52,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:29:52,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782303245] [2023-08-24 18:29:52,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:29:52,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:29:52,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:29:52,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:29:52,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:29:52,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782303245] [2023-08-24 18:29:52,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782303245] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:29:52,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:29:52,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 18:29:52,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623160695] [2023-08-24 18:29:52,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:29:52,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 18:29:52,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:29:52,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 18:29:52,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 18:29:52,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 214 [2023-08-24 18:29:52,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 79 transitions, 333 flow. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 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) [2023-08-24 18:29:52,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:29:52,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 214 [2023-08-24 18:29:52,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:29:54,966 INFO L124 PetriNetUnfolderBase]: 32600/47415 cut-off events. [2023-08-24 18:29:54,966 INFO L125 PetriNetUnfolderBase]: For 28103/28103 co-relation queries the response was YES. [2023-08-24 18:29:55,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121983 conditions, 47415 events. 32600/47415 cut-off events. For 28103/28103 co-relation queries the response was YES. Maximal size of possible extension queue 2035. Compared 347539 event pairs, 12990 based on Foata normal form. 0/38577 useless extension candidates. Maximal degree in co-relation 121973. Up to 24985 conditions per place. [2023-08-24 18:29:55,238 INFO L140 encePairwiseOnDemand]: 199/214 looper letters, 111 selfloop transitions, 33 changer transitions 0/147 dead transitions. [2023-08-24 18:29:55,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 147 transitions, 912 flow [2023-08-24 18:29:55,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 18:29:55,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 18:29:55,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 302 transitions. [2023-08-24 18:29:55,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.470404984423676 [2023-08-24 18:29:55,240 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 302 transitions. [2023-08-24 18:29:55,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 302 transitions. [2023-08-24 18:29:55,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:29:55,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 302 transitions. [2023-08-24 18:29:55,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 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) [2023-08-24 18:29:55,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 214.0) internal successors, (856), 4 states have internal predecessors, (856), 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) [2023-08-24 18:29:55,242 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 214.0) internal successors, (856), 4 states have internal predecessors, (856), 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) [2023-08-24 18:29:55,243 INFO L175 Difference]: Start difference. First operand has 68 places, 79 transitions, 333 flow. Second operand 3 states and 302 transitions. [2023-08-24 18:29:55,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 147 transitions, 912 flow [2023-08-24 18:29:55,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 147 transitions, 887 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 18:29:55,297 INFO L231 Difference]: Finished difference. Result has 71 places, 111 transitions, 701 flow [2023-08-24 18:29:55,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=701, PETRI_PLACES=71, PETRI_TRANSITIONS=111} [2023-08-24 18:29:55,298 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -2 predicate places. [2023-08-24 18:29:55,298 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 111 transitions, 701 flow [2023-08-24 18:29:55,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 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) [2023-08-24 18:29:55,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:29:55,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:29:55,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-24 18:29:55,299 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err5ASSERT_VIOLATIONASSERT === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-08-24 18:29:55,299 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:29:55,299 INFO L85 PathProgramCache]: Analyzing trace with hash 509507571, now seen corresponding path program 1 times [2023-08-24 18:29:55,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:29:55,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447911850] [2023-08-24 18:29:55,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:29:55,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:29:55,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:29:55,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:29:55,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:29:55,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447911850] [2023-08-24 18:29:55,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447911850] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:29:55,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:29:55,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 18:29:55,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895090925] [2023-08-24 18:29:55,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:29:55,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 18:29:55,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:29:55,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 18:29:55,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 18:29:55,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 214 [2023-08-24 18:29:55,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 111 transitions, 701 flow. Second operand has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 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) [2023-08-24 18:29:55,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:29:55,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 214 [2023-08-24 18:29:55,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:29:56,580 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([699] L702-4-->L703-1: Formula: (= |v_#race~x~0_120| 0) InVars {} OutVars{#race~x~0=|v_#race~x~0_120|, thr1Thread1of3ForFork0_#t~nondet6#1=|v_thr1Thread1of3ForFork0_#t~nondet6#1_15|} AuxVars[] AssignedVars[#race~x~0, thr1Thread1of3ForFork0_#t~nondet6#1][117], [130#true, thr1Thread3of3ForFork0InUse, 114#L703-1true, 157#(= ~x~0 1), Black: 135#(= |#race~x~0| |thr1Thread1of3ForFork0_#t~nondet5#1|), 151#(= |#race~x~0| 0), Black: 140#(= |#race~x~0| |thr1Thread1of3ForFork0_#t~nondet6#1|), Black: 146#(= |thr1Thread2of3ForFork0_#t~nondet5#1| |#race~x~0|), 46#L702-2true, 98#L703-2true, Black: 149#true, 13#L710-5true, thr1Thread1of3ForFork0InUse, thr1Thread2of3ForFork0InUse]) [2023-08-24 18:29:56,580 INFO L294 olderBase$Statistics]: this new event has 33 ancestors and is cut-off event [2023-08-24 18:29:56,581 INFO L297 olderBase$Statistics]: existing Event has 33 ancestors and is cut-off event [2023-08-24 18:29:56,581 INFO L297 olderBase$Statistics]: existing Event has 33 ancestors and is cut-off event [2023-08-24 18:29:56,581 INFO L297 olderBase$Statistics]: existing Event has 33 ancestors and is cut-off event [2023-08-24 18:29:56,587 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([640] L702-2-->L702-3: Formula: (= |v_#race~x~0_4| |v_thr1Thread2of3ForFork0_#t~nondet6#1_3|) InVars {thr1Thread2of3ForFork0_#t~nondet6#1=|v_thr1Thread2of3ForFork0_#t~nondet6#1_3|} OutVars{thr1Thread2of3ForFork0_#t~nondet6#1=|v_thr1Thread2of3ForFork0_#t~nondet6#1_3|, #race~x~0=|v_#race~x~0_4|} AuxVars[] AssignedVars[#race~x~0][152], [130#true, thr1Thread3of3ForFork0InUse, 157#(= ~x~0 1), Black: 135#(= |#race~x~0| |thr1Thread1of3ForFork0_#t~nondet5#1|), 50#L702-3true, 149#true, 87#L702-4true, Black: 140#(= |#race~x~0| |thr1Thread1of3ForFork0_#t~nondet6#1|), Black: 146#(= |thr1Thread2of3ForFork0_#t~nondet5#1| |#race~x~0|), Black: 151#(= |#race~x~0| 0), 13#L710-5true, 98#L703-2true, thr1Thread1of3ForFork0InUse, thr1Thread2of3ForFork0InUse]) [2023-08-24 18:29:56,587 INFO L294 olderBase$Statistics]: this new event has 33 ancestors and is cut-off event [2023-08-24 18:29:56,587 INFO L297 olderBase$Statistics]: existing Event has 33 ancestors and is cut-off event [2023-08-24 18:29:56,587 INFO L297 olderBase$Statistics]: existing Event has 33 ancestors and is cut-off event [2023-08-24 18:29:56,587 INFO L297 olderBase$Statistics]: existing Event has 33 ancestors and is cut-off event [2023-08-24 18:29:56,886 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([699] L702-4-->L703-1: Formula: (= |v_#race~x~0_120| 0) InVars {} OutVars{#race~x~0=|v_#race~x~0_120|, thr1Thread1of3ForFork0_#t~nondet6#1=|v_thr1Thread1of3ForFork0_#t~nondet6#1_15|} AuxVars[] AssignedVars[#race~x~0, thr1Thread1of3ForFork0_#t~nondet6#1][24], [130#true, thr1Thread3of3ForFork0InUse, 114#L703-1true, 157#(= ~x~0 1), Black: 135#(= |#race~x~0| |thr1Thread1of3ForFork0_#t~nondet5#1|), 151#(= |#race~x~0| 0), Black: 140#(= |#race~x~0| |thr1Thread1of3ForFork0_#t~nondet6#1|), Black: 146#(= |thr1Thread2of3ForFork0_#t~nondet5#1| |#race~x~0|), 15#thr1EXITtrue, 46#L702-2true, Black: 149#true, 13#L710-5true, thr1Thread1of3ForFork0InUse, thr1Thread2of3ForFork0InUse]) [2023-08-24 18:29:56,886 INFO L294 olderBase$Statistics]: this new event has 35 ancestors and is cut-off event [2023-08-24 18:29:56,886 INFO L297 olderBase$Statistics]: existing Event has 35 ancestors and is cut-off event [2023-08-24 18:29:56,886 INFO L297 olderBase$Statistics]: existing Event has 35 ancestors and is cut-off event [2023-08-24 18:29:56,886 INFO L297 olderBase$Statistics]: existing Event has 35 ancestors and is cut-off event [2023-08-24 18:29:56,995 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([699] L702-4-->L703-1: Formula: (= |v_#race~x~0_120| 0) InVars {} OutVars{#race~x~0=|v_#race~x~0_120|, thr1Thread1of3ForFork0_#t~nondet6#1=|v_thr1Thread1of3ForFork0_#t~nondet6#1_15|} AuxVars[] AssignedVars[#race~x~0, thr1Thread1of3ForFork0_#t~nondet6#1][117], [130#true, thr1Thread3of3ForFork0InUse, 114#L703-1true, 157#(= ~x~0 1), Black: 135#(= |#race~x~0| |thr1Thread1of3ForFork0_#t~nondet5#1|), 151#(= |#race~x~0| 0), Black: 140#(= |#race~x~0| |thr1Thread1of3ForFork0_#t~nondet6#1|), Black: 146#(= |thr1Thread2of3ForFork0_#t~nondet5#1| |#race~x~0|), 76#L710-4true, 46#L702-2true, Black: 149#true, 98#L703-2true, thr1Thread1of3ForFork0InUse, thr1Thread2of3ForFork0InUse]) [2023-08-24 18:29:56,995 INFO L294 olderBase$Statistics]: this new event has 36 ancestors and is cut-off event [2023-08-24 18:29:56,995 INFO L297 olderBase$Statistics]: existing Event has 36 ancestors and is cut-off event [2023-08-24 18:29:56,995 INFO L297 olderBase$Statistics]: existing Event has 36 ancestors and is cut-off event [2023-08-24 18:29:56,995 INFO L297 olderBase$Statistics]: existing Event has 36 ancestors and is cut-off event [2023-08-24 18:29:57,002 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([640] L702-2-->L702-3: Formula: (= |v_#race~x~0_4| |v_thr1Thread2of3ForFork0_#t~nondet6#1_3|) InVars {thr1Thread2of3ForFork0_#t~nondet6#1=|v_thr1Thread2of3ForFork0_#t~nondet6#1_3|} OutVars{thr1Thread2of3ForFork0_#t~nondet6#1=|v_thr1Thread2of3ForFork0_#t~nondet6#1_3|, #race~x~0=|v_#race~x~0_4|} AuxVars[] AssignedVars[#race~x~0][152], [130#true, thr1Thread3of3ForFork0InUse, 157#(= ~x~0 1), Black: 135#(= |#race~x~0| |thr1Thread1of3ForFork0_#t~nondet5#1|), 50#L702-3true, 149#true, 87#L702-4true, Black: 140#(= |#race~x~0| |thr1Thread1of3ForFork0_#t~nondet6#1|), Black: 146#(= |thr1Thread2of3ForFork0_#t~nondet5#1| |#race~x~0|), Black: 151#(= |#race~x~0| 0), 76#L710-4true, 98#L703-2true, thr1Thread1of3ForFork0InUse, thr1Thread2of3ForFork0InUse]) [2023-08-24 18:29:57,002 INFO L294 olderBase$Statistics]: this new event has 36 ancestors and is cut-off event [2023-08-24 18:29:57,002 INFO L297 olderBase$Statistics]: existing Event has 36 ancestors and is cut-off event [2023-08-24 18:29:57,002 INFO L297 olderBase$Statistics]: existing Event has 36 ancestors and is cut-off event [2023-08-24 18:29:57,002 INFO L297 olderBase$Statistics]: existing Event has 36 ancestors and is cut-off event [2023-08-24 18:29:57,136 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([699] L702-4-->L703-1: Formula: (= |v_#race~x~0_120| 0) InVars {} OutVars{#race~x~0=|v_#race~x~0_120|, thr1Thread1of3ForFork0_#t~nondet6#1=|v_thr1Thread1of3ForFork0_#t~nondet6#1_15|} AuxVars[] AssignedVars[#race~x~0, thr1Thread1of3ForFork0_#t~nondet6#1][24], [130#true, thr1Thread3of3ForFork0InUse, 114#L703-1true, 157#(= ~x~0 1), Black: 135#(= |#race~x~0| |thr1Thread1of3ForFork0_#t~nondet5#1|), 151#(= |#race~x~0| 0), Black: 140#(= |#race~x~0| |thr1Thread1of3ForFork0_#t~nondet6#1|), Black: 146#(= |thr1Thread2of3ForFork0_#t~nondet5#1| |#race~x~0|), 15#thr1EXITtrue, 76#L710-4true, 46#L702-2true, Black: 149#true, thr1Thread1of3ForFork0InUse, thr1Thread2of3ForFork0InUse]) [2023-08-24 18:29:57,136 INFO L294 olderBase$Statistics]: this new event has 38 ancestors and is cut-off event [2023-08-24 18:29:57,136 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2023-08-24 18:29:57,136 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2023-08-24 18:29:57,136 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2023-08-24 18:29:57,343 INFO L124 PetriNetUnfolderBase]: 18610/32296 cut-off events. [2023-08-24 18:29:57,343 INFO L125 PetriNetUnfolderBase]: For 63006/70038 co-relation queries the response was YES. [2023-08-24 18:29:57,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96379 conditions, 32296 events. 18610/32296 cut-off events. For 63006/70038 co-relation queries the response was YES. Maximal size of possible extension queue 1752. Compared 298080 event pairs, 5622 based on Foata normal form. 1089/29431 useless extension candidates. Maximal degree in co-relation 96368. Up to 14186 conditions per place. [2023-08-24 18:29:57,765 INFO L140 encePairwiseOnDemand]: 204/214 looper letters, 88 selfloop transitions, 7 changer transitions 0/155 dead transitions. [2023-08-24 18:29:57,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 155 transitions, 1145 flow [2023-08-24 18:29:57,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 18:29:57,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 18:29:57,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 302 transitions. [2023-08-24 18:29:57,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.470404984423676 [2023-08-24 18:29:57,766 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 302 transitions. [2023-08-24 18:29:57,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 302 transitions. [2023-08-24 18:29:57,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:29:57,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 302 transitions. [2023-08-24 18:29:57,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 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) [2023-08-24 18:29:57,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 214.0) internal successors, (856), 4 states have internal predecessors, (856), 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) [2023-08-24 18:29:57,769 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 214.0) internal successors, (856), 4 states have internal predecessors, (856), 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) [2023-08-24 18:29:57,769 INFO L175 Difference]: Start difference. First operand has 71 places, 111 transitions, 701 flow. Second operand 3 states and 302 transitions. [2023-08-24 18:29:57,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 155 transitions, 1145 flow [2023-08-24 18:29:57,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 155 transitions, 1055 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 18:29:57,965 INFO L231 Difference]: Finished difference. Result has 73 places, 117 transitions, 693 flow [2023-08-24 18:29:57,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=635, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=693, PETRI_PLACES=73, PETRI_TRANSITIONS=117} [2023-08-24 18:29:57,966 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 0 predicate places. [2023-08-24 18:29:57,966 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 117 transitions, 693 flow [2023-08-24 18:29:57,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 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) [2023-08-24 18:29:57,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:29:57,966 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:29:57,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-24 18:29:57,966 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-08-24 18:29:57,967 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:29:57,967 INFO L85 PathProgramCache]: Analyzing trace with hash 214811327, now seen corresponding path program 1 times [2023-08-24 18:29:57,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:29:57,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730538793] [2023-08-24 18:29:57,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:29:57,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:29:57,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:29:58,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 18:29:58,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:29:58,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730538793] [2023-08-24 18:29:58,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730538793] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:29:58,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:29:58,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 18:29:58,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018753570] [2023-08-24 18:29:58,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:29:58,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 18:29:58,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:29:58,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 18:29:58,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 18:29:58,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 214 [2023-08-24 18:29:58,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 117 transitions, 693 flow. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 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) [2023-08-24 18:29:58,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:29:58,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 214 [2023-08-24 18:29:58,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:29:58,097 INFO L124 PetriNetUnfolderBase]: 159/575 cut-off events. [2023-08-24 18:29:58,098 INFO L125 PetriNetUnfolderBase]: For 652/652 co-relation queries the response was YES. [2023-08-24 18:29:58,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1648 conditions, 575 events. 159/575 cut-off events. For 652/652 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 3343 event pairs, 17 based on Foata normal form. 168/714 useless extension candidates. Maximal degree in co-relation 1636. Up to 336 conditions per place. [2023-08-24 18:29:58,100 INFO L140 encePairwiseOnDemand]: 208/214 looper letters, 23 selfloop transitions, 6 changer transitions 0/50 dead transitions. [2023-08-24 18:29:58,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 50 transitions, 307 flow [2023-08-24 18:29:58,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 18:29:58,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 18:29:58,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 314 transitions. [2023-08-24 18:29:58,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48909657320872274 [2023-08-24 18:29:58,102 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 314 transitions. [2023-08-24 18:29:58,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 314 transitions. [2023-08-24 18:29:58,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:29:58,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 314 transitions. [2023-08-24 18:29:58,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 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) [2023-08-24 18:29:58,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 214.0) internal successors, (856), 4 states have internal predecessors, (856), 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) [2023-08-24 18:29:58,105 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 214.0) internal successors, (856), 4 states have internal predecessors, (856), 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) [2023-08-24 18:29:58,105 INFO L175 Difference]: Start difference. First operand has 73 places, 117 transitions, 693 flow. Second operand 3 states and 314 transitions. [2023-08-24 18:29:58,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 50 transitions, 307 flow [2023-08-24 18:29:58,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 50 transitions, 201 flow, removed 31 selfloop flow, removed 10 redundant places. [2023-08-24 18:29:58,108 INFO L231 Difference]: Finished difference. Result has 56 places, 47 transitions, 139 flow [2023-08-24 18:29:58,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=56, PETRI_TRANSITIONS=47} [2023-08-24 18:29:58,109 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -17 predicate places. [2023-08-24 18:29:58,109 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 47 transitions, 139 flow [2023-08-24 18:29:58,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 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) [2023-08-24 18:29:58,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:29:58,109 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:29:58,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-24 18:29:58,109 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-08-24 18:29:58,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:29:58,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1181207651, now seen corresponding path program 1 times [2023-08-24 18:29:58,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:29:58,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442730689] [2023-08-24 18:29:58,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:29:58,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:29:58,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:29:58,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 18:29:58,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:29:58,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442730689] [2023-08-24 18:29:58,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442730689] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:29:58,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:29:58,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 18:29:58,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386342581] [2023-08-24 18:29:58,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:29:58,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 18:29:58,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:29:58,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 18:29:58,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 18:29:58,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 214 [2023-08-24 18:29:58,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 139 flow. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 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) [2023-08-24 18:29:58,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:29:58,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 214 [2023-08-24 18:29:58,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:29:58,226 INFO L124 PetriNetUnfolderBase]: 255/684 cut-off events. [2023-08-24 18:29:58,226 INFO L125 PetriNetUnfolderBase]: For 175/175 co-relation queries the response was YES. [2023-08-24 18:29:58,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1650 conditions, 684 events. 255/684 cut-off events. For 175/175 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 4063 event pairs, 229 based on Foata normal form. 0/662 useless extension candidates. Maximal degree in co-relation 1642. Up to 602 conditions per place. [2023-08-24 18:29:58,229 INFO L140 encePairwiseOnDemand]: 211/214 looper letters, 43 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2023-08-24 18:29:58,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 48 transitions, 236 flow [2023-08-24 18:29:58,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 18:29:58,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 18:29:58,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 241 transitions. [2023-08-24 18:29:58,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37538940809968846 [2023-08-24 18:29:58,232 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 241 transitions. [2023-08-24 18:29:58,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 241 transitions. [2023-08-24 18:29:58,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:29:58,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 241 transitions. [2023-08-24 18:29:58,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 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) [2023-08-24 18:29:58,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 214.0) internal successors, (856), 4 states have internal predecessors, (856), 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) [2023-08-24 18:29:58,234 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 214.0) internal successors, (856), 4 states have internal predecessors, (856), 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) [2023-08-24 18:29:58,234 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 139 flow. Second operand 3 states and 241 transitions. [2023-08-24 18:29:58,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 48 transitions, 236 flow [2023-08-24 18:29:58,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 48 transitions, 230 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 18:29:58,236 INFO L231 Difference]: Finished difference. Result has 56 places, 46 transitions, 135 flow [2023-08-24 18:29:58,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=56, PETRI_TRANSITIONS=46} [2023-08-24 18:29:58,237 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -17 predicate places. [2023-08-24 18:29:58,237 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 135 flow [2023-08-24 18:29:58,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 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) [2023-08-24 18:29:58,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:29:58,238 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-24 18:29:58,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-24 18:29:58,238 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-08-24 18:29:58,238 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:29:58,238 INFO L85 PathProgramCache]: Analyzing trace with hash 260702702, now seen corresponding path program 1 times [2023-08-24 18:29:58,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:29:58,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259626301] [2023-08-24 18:29:58,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:29:58,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:29:58,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 18:29:58,256 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 18:29:58,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 18:29:58,274 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 18:29:58,274 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 18:29:58,274 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (32 of 33 remaining) [2023-08-24 18:29:58,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (31 of 33 remaining) [2023-08-24 18:29:58,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (30 of 33 remaining) [2023-08-24 18:29:58,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (29 of 33 remaining) [2023-08-24 18:29:58,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (28 of 33 remaining) [2023-08-24 18:29:58,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (27 of 33 remaining) [2023-08-24 18:29:58,276 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (26 of 33 remaining) [2023-08-24 18:29:58,276 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (25 of 33 remaining) [2023-08-24 18:29:58,276 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONASSERT (24 of 33 remaining) [2023-08-24 18:29:58,276 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 33 remaining) [2023-08-24 18:29:58,276 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 33 remaining) [2023-08-24 18:29:58,276 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 33 remaining) [2023-08-24 18:29:58,276 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 33 remaining) [2023-08-24 18:29:58,276 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (19 of 33 remaining) [2023-08-24 18:29:58,277 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (18 of 33 remaining) [2023-08-24 18:29:58,277 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (17 of 33 remaining) [2023-08-24 18:29:58,277 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONASSERT (16 of 33 remaining) [2023-08-24 18:29:58,277 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 33 remaining) [2023-08-24 18:29:58,277 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 33 remaining) [2023-08-24 18:29:58,277 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 33 remaining) [2023-08-24 18:29:58,277 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 33 remaining) [2023-08-24 18:29:58,277 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (11 of 33 remaining) [2023-08-24 18:29:58,277 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (10 of 33 remaining) [2023-08-24 18:29:58,278 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (9 of 33 remaining) [2023-08-24 18:29:58,278 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONASSERT (8 of 33 remaining) [2023-08-24 18:29:58,278 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 33 remaining) [2023-08-24 18:29:58,278 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 33 remaining) [2023-08-24 18:29:58,278 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 33 remaining) [2023-08-24 18:29:58,278 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 33 remaining) [2023-08-24 18:29:58,278 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (3 of 33 remaining) [2023-08-24 18:29:58,279 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (2 of 33 remaining) [2023-08-24 18:29:58,279 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (1 of 33 remaining) [2023-08-24 18:29:58,279 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONASSERT (0 of 33 remaining) [2023-08-24 18:29:58,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-24 18:29:58,279 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:29:58,280 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 18:29:58,280 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-24 18:29:58,311 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 18:29:58,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 161 transitions, 354 flow [2023-08-24 18:29:58,337 INFO L124 PetriNetUnfolderBase]: 13/207 cut-off events. [2023-08-24 18:29:58,337 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-08-24 18:29:58,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 207 events. 13/207 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 606 event pairs, 0 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 169. Up to 10 conditions per place. [2023-08-24 18:29:58,339 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 161 transitions, 354 flow [2023-08-24 18:29:58,343 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 161 places, 161 transitions, 354 flow [2023-08-24 18:29:58,344 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 18:29:58,344 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 161 places, 161 transitions, 354 flow [2023-08-24 18:29:58,344 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 161 places, 161 transitions, 354 flow [2023-08-24 18:29:58,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 161 transitions, 354 flow [2023-08-24 18:29:58,363 INFO L124 PetriNetUnfolderBase]: 13/207 cut-off events. [2023-08-24 18:29:58,363 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-08-24 18:29:58,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 207 events. 13/207 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 606 event pairs, 0 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 169. Up to 10 conditions per place. [2023-08-24 18:29:58,374 INFO L119 LiptonReduction]: Number of co-enabled transitions 16896 [2023-08-24 18:29:59,569 INFO L134 LiptonReduction]: Checked pairs total: 65961 [2023-08-24 18:29:59,569 INFO L136 LiptonReduction]: Total number of compositions: 104 [2023-08-24 18:29:59,570 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 18:29:59,571 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;@3fc36ec3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 18:29:59,571 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2023-08-24 18:29:59,572 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 18:29:59,572 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-08-24 18:29:59,572 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 18:29:59,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:29:59,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-24 18:29:59,572 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2023-08-24 18:29:59,573 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:29:59,573 INFO L85 PathProgramCache]: Analyzing trace with hash 33128031, now seen corresponding path program 1 times [2023-08-24 18:29:59,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:29:59,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141545850] [2023-08-24 18:29:59,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:29:59,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:29:59,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:29:59,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:29:59,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:29:59,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141545850] [2023-08-24 18:29:59,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141545850] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:29:59,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:29:59,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 18:29:59,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941626932] [2023-08-24 18:29:59,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:29:59,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-24 18:29:59,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:29:59,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-24 18:29:59,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-24 18:29:59,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 265 [2023-08-24 18:29:59,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 90 transitions, 212 flow. Second operand has 2 states, 2 states have (on average 121.0) internal successors, (242), 2 states have internal predecessors, (242), 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) [2023-08-24 18:29:59,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:29:59,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 265 [2023-08-24 18:29:59,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:30:03,566 INFO L124 PetriNetUnfolderBase]: 44288/70312 cut-off events. [2023-08-24 18:30:03,566 INFO L125 PetriNetUnfolderBase]: For 8960/8960 co-relation queries the response was YES. [2023-08-24 18:30:03,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134230 conditions, 70312 events. 44288/70312 cut-off events. For 8960/8960 co-relation queries the response was YES. Maximal size of possible extension queue 2378. Compared 611305 event pairs, 44288 based on Foata normal form. 4716/64585 useless extension candidates. Maximal degree in co-relation 12004. Up to 59051 conditions per place. [2023-08-24 18:30:04,150 INFO L140 encePairwiseOnDemand]: 244/265 looper letters, 38 selfloop transitions, 0 changer transitions 0/69 dead transitions. [2023-08-24 18:30:04,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 69 transitions, 246 flow [2023-08-24 18:30:04,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-24 18:30:04,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-24 18:30:04,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 297 transitions. [2023-08-24 18:30:04,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.560377358490566 [2023-08-24 18:30:04,152 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 297 transitions. [2023-08-24 18:30:04,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 297 transitions. [2023-08-24 18:30:04,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:30:04,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 297 transitions. [2023-08-24 18:30:04,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 148.5) internal successors, (297), 2 states have internal predecessors, (297), 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) [2023-08-24 18:30:04,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 265.0) internal successors, (795), 3 states have internal predecessors, (795), 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) [2023-08-24 18:30:04,155 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 265.0) internal successors, (795), 3 states have internal predecessors, (795), 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) [2023-08-24 18:30:04,155 INFO L175 Difference]: Start difference. First operand has 95 places, 90 transitions, 212 flow. Second operand 2 states and 297 transitions. [2023-08-24 18:30:04,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 69 transitions, 246 flow [2023-08-24 18:30:04,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 69 transitions, 234 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-08-24 18:30:04,163 INFO L231 Difference]: Finished difference. Result has 79 places, 69 transitions, 158 flow [2023-08-24 18:30:04,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=158, PETRI_PLACES=79, PETRI_TRANSITIONS=69} [2023-08-24 18:30:04,163 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, -16 predicate places. [2023-08-24 18:30:04,163 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 69 transitions, 158 flow [2023-08-24 18:30:04,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 121.0) internal successors, (242), 2 states have internal predecessors, (242), 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) [2023-08-24 18:30:04,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:30:04,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:30:04,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-24 18:30:04,164 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2023-08-24 18:30:04,164 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:30:04,164 INFO L85 PathProgramCache]: Analyzing trace with hash -924400135, now seen corresponding path program 1 times [2023-08-24 18:30:04,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:30:04,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692938927] [2023-08-24 18:30:04,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:30:04,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:30:04,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:30:04,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:30:04,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:30:04,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692938927] [2023-08-24 18:30:04,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692938927] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:30:04,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:30:04,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 18:30:04,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108208266] [2023-08-24 18:30:04,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:30:04,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 18:30:04,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:30:04,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 18:30:04,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 18:30:04,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 265 [2023-08-24 18:30:04,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 69 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 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) [2023-08-24 18:30:04,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:30:04,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 265 [2023-08-24 18:30:04,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:30:31,498 INFO L124 PetriNetUnfolderBase]: 345421/457082 cut-off events. [2023-08-24 18:30:31,498 INFO L125 PetriNetUnfolderBase]: For 10754/10754 co-relation queries the response was YES. [2023-08-24 18:30:32,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 921695 conditions, 457082 events. 345421/457082 cut-off events. For 10754/10754 co-relation queries the response was YES. Maximal size of possible extension queue 12698. Compared 3316922 event pairs, 315251 based on Foata normal form. 0/342203 useless extension candidates. Maximal degree in co-relation 921688. Up to 428672 conditions per place. [2023-08-24 18:30:34,209 INFO L140 encePairwiseOnDemand]: 253/265 looper letters, 96 selfloop transitions, 11 changer transitions 0/115 dead transitions. [2023-08-24 18:30:34,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 115 transitions, 479 flow [2023-08-24 18:30:34,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 18:30:34,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 18:30:34,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 351 transitions. [2023-08-24 18:30:34,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44150943396226416 [2023-08-24 18:30:34,210 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 351 transitions. [2023-08-24 18:30:34,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 351 transitions. [2023-08-24 18:30:34,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:30:34,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 351 transitions. [2023-08-24 18:30:34,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 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) [2023-08-24 18:30:34,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 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) [2023-08-24 18:30:34,213 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 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) [2023-08-24 18:30:34,213 INFO L175 Difference]: Start difference. First operand has 79 places, 69 transitions, 158 flow. Second operand 3 states and 351 transitions. [2023-08-24 18:30:34,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 115 transitions, 479 flow [2023-08-24 18:30:34,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 115 transitions, 479 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 18:30:34,231 INFO L231 Difference]: Finished difference. Result has 82 places, 79 transitions, 233 flow [2023-08-24 18:30:34,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=233, PETRI_PLACES=82, PETRI_TRANSITIONS=79} [2023-08-24 18:30:34,231 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, -13 predicate places. [2023-08-24 18:30:34,232 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 79 transitions, 233 flow [2023-08-24 18:30:34,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 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) [2023-08-24 18:30:34,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:30:34,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:30:34,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-24 18:30:34,232 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2023-08-24 18:30:34,232 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:30:34,232 INFO L85 PathProgramCache]: Analyzing trace with hash 530404142, now seen corresponding path program 1 times [2023-08-24 18:30:34,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:30:34,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784053374] [2023-08-24 18:30:34,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:30:34,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:30:34,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:30:34,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:30:34,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:30:34,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784053374] [2023-08-24 18:30:34,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784053374] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:30:34,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:30:34,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 18:30:34,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975063246] [2023-08-24 18:30:34,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:30:34,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 18:30:34,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:30:34,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 18:30:34,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 18:30:34,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 265 [2023-08-24 18:30:34,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 79 transitions, 233 flow. Second operand has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 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) [2023-08-24 18:30:34,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:30:34,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 265 [2023-08-24 18:30:34,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:31:07,068 INFO L124 PetriNetUnfolderBase]: 389195/514178 cut-off events. [2023-08-24 18:31:07,068 INFO L125 PetriNetUnfolderBase]: For 94415/94535 co-relation queries the response was YES. [2023-08-24 18:31:08,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1147734 conditions, 514178 events. 389195/514178 cut-off events. For 94415/94535 co-relation queries the response was YES. Maximal size of possible extension queue 14323. Compared 3813925 event pairs, 318117 based on Foata normal form. 0/388570 useless extension candidates. Maximal degree in co-relation 1147725. Up to 454414 conditions per place. [2023-08-24 18:31:10,605 INFO L140 encePairwiseOnDemand]: 252/265 looper letters, 106 selfloop transitions, 12 changer transitions 0/126 dead transitions. [2023-08-24 18:31:10,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 126 transitions, 596 flow [2023-08-24 18:31:10,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 18:31:10,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 18:31:10,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 352 transitions. [2023-08-24 18:31:10,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4427672955974843 [2023-08-24 18:31:10,607 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 352 transitions. [2023-08-24 18:31:10,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 352 transitions. [2023-08-24 18:31:10,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:31:10,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 352 transitions. [2023-08-24 18:31:10,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 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) [2023-08-24 18:31:10,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 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) [2023-08-24 18:31:10,610 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 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) [2023-08-24 18:31:10,610 INFO L175 Difference]: Start difference. First operand has 82 places, 79 transitions, 233 flow. Second operand 3 states and 352 transitions. [2023-08-24 18:31:10,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 126 transitions, 596 flow [2023-08-24 18:31:10,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 126 transitions, 585 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 18:31:10,649 INFO L231 Difference]: Finished difference. Result has 85 places, 90 transitions, 334 flow [2023-08-24 18:31:10,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=334, PETRI_PLACES=85, PETRI_TRANSITIONS=90} [2023-08-24 18:31:10,650 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, -10 predicate places. [2023-08-24 18:31:10,650 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 90 transitions, 334 flow [2023-08-24 18:31:10,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 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) [2023-08-24 18:31:10,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:31:10,650 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:31:10,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-24 18:31:10,650 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2023-08-24 18:31:10,651 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:31:10,651 INFO L85 PathProgramCache]: Analyzing trace with hash -366219280, now seen corresponding path program 1 times [2023-08-24 18:31:10,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:31:10,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862812291] [2023-08-24 18:31:10,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:31:10,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:31:10,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:31:10,669 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 18:31:10,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:31:10,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862812291] [2023-08-24 18:31:10,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862812291] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:31:10,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:31:10,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 18:31:10,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546366015] [2023-08-24 18:31:10,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:31:10,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 18:31:10,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:31:10,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 18:31:10,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 18:31:10,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 265 [2023-08-24 18:31:10,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 90 transitions, 334 flow. Second operand has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 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) [2023-08-24 18:31:10,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:31:10,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 265 [2023-08-24 18:31:10,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand