/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/weaver/chl-node-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 08:49:21,221 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 08:49:21,305 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 [2023-08-26 08:49:21,310 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 08:49:21,310 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 08:49:21,340 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 08:49:21,341 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 08:49:21,341 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 08:49:21,342 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 08:49:21,345 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 08:49:21,345 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 08:49:21,345 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 08:49:21,346 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 08:49:21,347 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 08:49:21,347 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 08:49:21,347 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 08:49:21,347 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 08:49:21,348 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 08:49:21,348 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 08:49:21,348 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 08:49:21,348 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 08:49:21,349 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 08:49:21,349 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 08:49:21,350 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 08:49:21,350 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 08:49:21,350 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 08:49:21,350 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 08:49:21,350 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 08:49:21,351 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 08:49:21,351 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 08:49:21,352 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 08:49:21,352 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 08:49:21,352 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 08:49:21,352 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 08:49:21,352 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 08:49:21,352 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-26 08:49:21,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 08:49:21,691 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 08:49:21,693 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 08:49:21,694 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 08:49:21,694 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 08:49:21,695 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-node-trans.wvr.c [2023-08-26 08:49:22,718 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 08:49:22,941 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 08:49:22,941 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-trans.wvr.c [2023-08-26 08:49:22,950 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/791ac7d40/869505f2a2c3445fa89daa74d551e54a/FLAG2d9c1e303 [2023-08-26 08:49:22,965 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/791ac7d40/869505f2a2c3445fa89daa74d551e54a [2023-08-26 08:49:22,970 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 08:49:22,971 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 08:49:22,974 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 08:49:22,974 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 08:49:22,976 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 08:49:22,977 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 08:49:22" (1/1) ... [2023-08-26 08:49:22,978 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34b8dcd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:49:22, skipping insertion in model container [2023-08-26 08:49:22,978 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 08:49:22" (1/1) ... [2023-08-26 08:49:23,011 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 08:49:23,242 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 08:49:23,249 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 08:49:23,289 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 08:49:23,304 INFO L206 MainTranslator]: Completed translation [2023-08-26 08:49:23,305 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:49:23 WrapperNode [2023-08-26 08:49:23,305 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 08:49:23,306 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 08:49:23,306 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 08:49:23,306 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 08:49:23,311 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:49:23" (1/1) ... [2023-08-26 08:49:23,333 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:49:23" (1/1) ... [2023-08-26 08:49:23,391 INFO L138 Inliner]: procedures = 27, calls = 67, calls flagged for inlining = 23, calls inlined = 35, statements flattened = 821 [2023-08-26 08:49:23,392 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 08:49:23,393 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 08:49:23,393 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 08:49:23,393 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 08:49:23,401 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:49:23" (1/1) ... [2023-08-26 08:49:23,401 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:49:23" (1/1) ... [2023-08-26 08:49:23,408 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:49:23" (1/1) ... [2023-08-26 08:49:23,408 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:49:23" (1/1) ... [2023-08-26 08:49:23,445 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:49:23" (1/1) ... [2023-08-26 08:49:23,451 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:49:23" (1/1) ... [2023-08-26 08:49:23,454 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:49:23" (1/1) ... [2023-08-26 08:49:23,457 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:49:23" (1/1) ... [2023-08-26 08:49:23,462 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 08:49:23,462 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 08:49:23,463 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 08:49:23,463 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 08:49:23,463 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:49:23" (1/1) ... [2023-08-26 08:49:23,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 08:49:23,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 08:49:23,523 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) [2023-08-26 08:49:23,542 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 [2023-08-26 08:49:23,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 08:49:23,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 08:49:23,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 08:49:23,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 08:49:23,558 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-26 08:49:23,559 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-26 08:49:23,560 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-26 08:49:23,560 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-26 08:49:23,560 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-26 08:49:23,560 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-26 08:49:23,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 08:49:23,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-26 08:49:23,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 08:49:23,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 08:49:23,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 08:49:23,562 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 08:49:23,705 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 08:49:23,706 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 08:49:24,626 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 08:49:24,641 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 08:49:24,642 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-26 08:49:24,645 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 08:49:24 BoogieIcfgContainer [2023-08-26 08:49:24,645 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 08:49:24,647 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 08:49:24,647 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 08:49:24,650 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 08:49:24,650 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 08:49:22" (1/3) ... [2023-08-26 08:49:24,650 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eb9036d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 08:49:24, skipping insertion in model container [2023-08-26 08:49:24,651 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:49:23" (2/3) ... [2023-08-26 08:49:24,651 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eb9036d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 08:49:24, skipping insertion in model container [2023-08-26 08:49:24,651 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 08:49:24" (3/3) ... [2023-08-26 08:49:24,652 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-trans.wvr.c [2023-08-26 08:49:24,665 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 08:49:24,666 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 118 error locations. [2023-08-26 08:49:24,666 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 08:49:24,817 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-26 08:49:24,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 976 places, 1014 transitions, 2052 flow [2023-08-26 08:49:25,272 INFO L124 PetriNetUnfolderBase]: 48/1011 cut-off events. [2023-08-26 08:49:25,273 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-26 08:49:25,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1024 conditions, 1011 events. 48/1011 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 2139 event pairs, 0 based on Foata normal form. 0/845 useless extension candidates. Maximal degree in co-relation 801. Up to 2 conditions per place. [2023-08-26 08:49:25,291 INFO L82 GeneralOperation]: Start removeDead. Operand has 976 places, 1014 transitions, 2052 flow [2023-08-26 08:49:25,309 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 962 places, 1000 transitions, 2018 flow [2023-08-26 08:49:25,312 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 08:49:25,323 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 962 places, 1000 transitions, 2018 flow [2023-08-26 08:49:25,325 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 962 places, 1000 transitions, 2018 flow [2023-08-26 08:49:25,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 962 places, 1000 transitions, 2018 flow [2023-08-26 08:49:25,597 INFO L124 PetriNetUnfolderBase]: 48/1000 cut-off events. [2023-08-26 08:49:25,597 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-26 08:49:25,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1013 conditions, 1000 events. 48/1000 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 2129 event pairs, 0 based on Foata normal form. 0/835 useless extension candidates. Maximal degree in co-relation 801. Up to 2 conditions per place. [2023-08-26 08:49:25,654 INFO L119 LiptonReduction]: Number of co-enabled transitions 148920 [2023-08-26 08:49:47,738 INFO L134 LiptonReduction]: Checked pairs total: 1074713 [2023-08-26 08:49:47,738 INFO L136 LiptonReduction]: Total number of compositions: 1006 [2023-08-26 08:49:47,750 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 08:49:47,755 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;@2ecf3e49, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 08:49:47,755 INFO L358 AbstractCegarLoop]: Starting to check reachability of 196 error locations. [2023-08-26 08:49:47,756 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 08:49:47,756 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 08:49:47,756 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 08:49:47,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:49:47,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 08:49:47,757 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 192 more)] === [2023-08-26 08:49:47,761 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:49:47,761 INFO L85 PathProgramCache]: Analyzing trace with hash 3650, now seen corresponding path program 1 times [2023-08-26 08:49:47,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:49:47,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124596851] [2023-08-26 08:49:47,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:49:47,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:49:47,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:49:47,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 08:49:47,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:49:47,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124596851] [2023-08-26 08:49:47,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124596851] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 08:49:47,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 08:49:47,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 08:49:47,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021018595] [2023-08-26 08:49:47,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:49:47,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 08:49:47,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:49:47,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 08:49:47,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 08:49:47,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 978 out of 2020 [2023-08-26 08:49:47,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 320 transitions, 658 flow. Second operand has 2 states, 2 states have (on average 978.5) internal successors, (1957), 2 states have internal predecessors, (1957), 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) [2023-08-26 08:49:47,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:49:47,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 978 of 2020 [2023-08-26 08:49:47,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:49:52,256 INFO L124 PetriNetUnfolderBase]: 11567/38387 cut-off events. [2023-08-26 08:49:52,256 INFO L125 PetriNetUnfolderBase]: For 539/539 co-relation queries the response was YES. [2023-08-26 08:49:52,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54756 conditions, 38387 events. 11567/38387 cut-off events. For 539/539 co-relation queries the response was YES. Maximal size of possible extension queue 989. Compared 488850 event pairs, 9493 based on Foata normal form. 2148/32380 useless extension candidates. Maximal degree in co-relation 51306. Up to 15933 conditions per place. [2023-08-26 08:49:52,624 INFO L140 encePairwiseOnDemand]: 1959/2020 looper letters, 66 selfloop transitions, 0 changer transitions 0/259 dead transitions. [2023-08-26 08:49:52,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 259 transitions, 668 flow [2023-08-26 08:49:52,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 08:49:52,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 08:49:52,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 2083 transitions. [2023-08-26 08:49:52,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5155940594059406 [2023-08-26 08:49:52,647 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 2083 transitions. [2023-08-26 08:49:52,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 2083 transitions. [2023-08-26 08:49:52,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:49:52,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 2083 transitions. [2023-08-26 08:49:52,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 1041.5) internal successors, (2083), 2 states have internal predecessors, (2083), 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) [2023-08-26 08:49:52,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 2020.0) internal successors, (6060), 3 states have internal predecessors, (6060), 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) [2023-08-26 08:49:52,676 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 2020.0) internal successors, (6060), 3 states have internal predecessors, (6060), 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) [2023-08-26 08:49:52,678 INFO L175 Difference]: Start difference. First operand has 317 places, 320 transitions, 658 flow. Second operand 2 states and 2083 transitions. [2023-08-26 08:49:52,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 259 transitions, 668 flow [2023-08-26 08:49:52,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 259 transitions, 656 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-26 08:49:52,705 INFO L231 Difference]: Finished difference. Result has 252 places, 259 transitions, 524 flow [2023-08-26 08:49:52,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2020, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=524, PETRI_PLACES=252, PETRI_TRANSITIONS=259} [2023-08-26 08:49:52,709 INFO L281 CegarLoopForPetriNet]: 317 programPoint places, -65 predicate places. [2023-08-26 08:49:52,710 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 259 transitions, 524 flow [2023-08-26 08:49:52,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 978.5) internal successors, (1957), 2 states have internal predecessors, (1957), 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) [2023-08-26 08:49:52,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:49:52,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 08:49:52,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 08:49:52,712 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 192 more)] === [2023-08-26 08:49:52,712 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:49:52,712 INFO L85 PathProgramCache]: Analyzing trace with hash 458460679, now seen corresponding path program 1 times [2023-08-26 08:49:52,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:49:52,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491322157] [2023-08-26 08:49:52,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:49:52,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:49:52,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:49:52,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 08:49:52,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:49:52,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491322157] [2023-08-26 08:49:52,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491322157] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 08:49:52,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 08:49:52,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 08:49:52,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280310327] [2023-08-26 08:49:52,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:49:52,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 08:49:52,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:49:52,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 08:49:52,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 08:49:52,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 963 out of 2020 [2023-08-26 08:49:52,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 259 transitions, 524 flow. Second operand has 3 states, 3 states have (on average 966.3333333333334) internal successors, (2899), 3 states have internal predecessors, (2899), 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) [2023-08-26 08:49:52,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:49:52,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 963 of 2020 [2023-08-26 08:49:52,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:49:56,685 INFO L124 PetriNetUnfolderBase]: 16787/44630 cut-off events. [2023-08-26 08:49:56,685 INFO L125 PetriNetUnfolderBase]: For 101/101 co-relation queries the response was YES. [2023-08-26 08:49:56,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67932 conditions, 44630 events. 16787/44630 cut-off events. For 101/101 co-relation queries the response was YES. Maximal size of possible extension queue 1101. Compared 524810 event pairs, 5005 based on Foata normal form. 0/37527 useless extension candidates. Maximal degree in co-relation 67929. Up to 23054 conditions per place. [2023-08-26 08:49:56,971 INFO L140 encePairwiseOnDemand]: 2014/2020 looper letters, 88 selfloop transitions, 2 changer transitions 0/273 dead transitions. [2023-08-26 08:49:56,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 273 transitions, 734 flow [2023-08-26 08:49:56,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 08:49:56,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 08:49:56,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2983 transitions. [2023-08-26 08:49:56,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49224422442244226 [2023-08-26 08:49:56,979 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2983 transitions. [2023-08-26 08:49:56,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2983 transitions. [2023-08-26 08:49:56,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:49:56,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2983 transitions. [2023-08-26 08:49:56,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 994.3333333333334) internal successors, (2983), 3 states have internal predecessors, (2983), 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) [2023-08-26 08:49:56,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2020.0) internal successors, (8080), 4 states have internal predecessors, (8080), 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) [2023-08-26 08:49:57,003 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2020.0) internal successors, (8080), 4 states have internal predecessors, (8080), 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) [2023-08-26 08:49:57,003 INFO L175 Difference]: Start difference. First operand has 252 places, 259 transitions, 524 flow. Second operand 3 states and 2983 transitions. [2023-08-26 08:49:57,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 273 transitions, 734 flow [2023-08-26 08:49:57,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 273 transitions, 734 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 08:49:57,009 INFO L231 Difference]: Finished difference. Result has 251 places, 257 transitions, 530 flow [2023-08-26 08:49:57,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2020, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=530, PETRI_PLACES=251, PETRI_TRANSITIONS=257} [2023-08-26 08:49:57,010 INFO L281 CegarLoopForPetriNet]: 317 programPoint places, -66 predicate places. [2023-08-26 08:49:57,010 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 257 transitions, 530 flow [2023-08-26 08:49:57,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 966.3333333333334) internal successors, (2899), 3 states have internal predecessors, (2899), 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) [2023-08-26 08:49:57,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:49:57,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 08:49:57,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 08:49:57,015 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 192 more)] === [2023-08-26 08:49:57,017 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:49:57,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1800846487, now seen corresponding path program 1 times [2023-08-26 08:49:57,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:49:57,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334586860] [2023-08-26 08:49:57,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:49:57,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:49:57,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:49:57,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 08:49:57,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:49:57,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334586860] [2023-08-26 08:49:57,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334586860] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 08:49:57,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 08:49:57,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 08:49:57,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665387363] [2023-08-26 08:49:57,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:49:57,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 08:49:57,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:49:57,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 08:49:57,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 08:49:57,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 945 out of 2020 [2023-08-26 08:49:57,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 257 transitions, 530 flow. Second operand has 3 states, 3 states have (on average 948.3333333333334) internal successors, (2845), 3 states have internal predecessors, (2845), 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) [2023-08-26 08:49:57,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:49:57,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 945 of 2020 [2023-08-26 08:49:57,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:50:02,916 INFO L124 PetriNetUnfolderBase]: 23689/73233 cut-off events. [2023-08-26 08:50:02,917 INFO L125 PetriNetUnfolderBase]: For 156/156 co-relation queries the response was YES. [2023-08-26 08:50:03,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106277 conditions, 73233 events. 23689/73233 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 1660. Compared 990170 event pairs, 20141 based on Foata normal form. 0/60843 useless extension candidates. Maximal degree in co-relation 106273. Up to 32836 conditions per place. [2023-08-26 08:50:03,454 INFO L140 encePairwiseOnDemand]: 2013/2020 looper letters, 77 selfloop transitions, 1 changer transitions 0/251 dead transitions. [2023-08-26 08:50:03,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 251 transitions, 674 flow [2023-08-26 08:50:03,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 08:50:03,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 08:50:03,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2919 transitions. [2023-08-26 08:50:03,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48168316831683167 [2023-08-26 08:50:03,462 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2919 transitions. [2023-08-26 08:50:03,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2919 transitions. [2023-08-26 08:50:03,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:50:03,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2919 transitions. [2023-08-26 08:50:03,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 973.0) internal successors, (2919), 3 states have internal predecessors, (2919), 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) [2023-08-26 08:50:03,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2020.0) internal successors, (8080), 4 states have internal predecessors, (8080), 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) [2023-08-26 08:50:03,482 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2020.0) internal successors, (8080), 4 states have internal predecessors, (8080), 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) [2023-08-26 08:50:03,482 INFO L175 Difference]: Start difference. First operand has 251 places, 257 transitions, 530 flow. Second operand 3 states and 2919 transitions. [2023-08-26 08:50:03,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 251 transitions, 674 flow [2023-08-26 08:50:03,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 251 transitions, 674 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 08:50:03,487 INFO L231 Difference]: Finished difference. Result has 247 places, 251 transitions, 520 flow [2023-08-26 08:50:03,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2020, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=520, PETRI_PLACES=247, PETRI_TRANSITIONS=251} [2023-08-26 08:50:03,489 INFO L281 CegarLoopForPetriNet]: 317 programPoint places, -70 predicate places. [2023-08-26 08:50:03,489 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 251 transitions, 520 flow [2023-08-26 08:50:03,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 948.3333333333334) internal successors, (2845), 3 states have internal predecessors, (2845), 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) [2023-08-26 08:50:03,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:50:03,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 08:50:03,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 08:50:03,494 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 192 more)] === [2023-08-26 08:50:03,495 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:50:03,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1765562640, now seen corresponding path program 1 times [2023-08-26 08:50:03,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:50:03,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138261198] [2023-08-26 08:50:03,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:50:03,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:50:03,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:50:03,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 08:50:03,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:50:03,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138261198] [2023-08-26 08:50:03,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138261198] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 08:50:03,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 08:50:03,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 08:50:03,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535155718] [2023-08-26 08:50:03,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:50:03,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 08:50:03,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:50:03,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 08:50:03,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 08:50:03,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 963 out of 2020 [2023-08-26 08:50:03,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 251 transitions, 520 flow. Second operand has 3 states, 3 states have (on average 967.0) internal successors, (2901), 3 states have internal predecessors, (2901), 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) [2023-08-26 08:50:03,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:50:03,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 963 of 2020 [2023-08-26 08:50:03,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:50:08,332 INFO L124 PetriNetUnfolderBase]: 19260/57231 cut-off events. [2023-08-26 08:50:08,332 INFO L125 PetriNetUnfolderBase]: For 167/167 co-relation queries the response was YES. [2023-08-26 08:50:08,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84181 conditions, 57231 events. 19260/57231 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 1263. Compared 724660 event pairs, 12103 based on Foata normal form. 0/47928 useless extension candidates. Maximal degree in co-relation 84176. Up to 26522 conditions per place. [2023-08-26 08:50:08,640 INFO L140 encePairwiseOnDemand]: 2014/2020 looper letters, 96 selfloop transitions, 2 changer transitions 0/273 dead transitions. [2023-08-26 08:50:08,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 273 transitions, 762 flow [2023-08-26 08:50:08,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 08:50:08,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 08:50:08,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2991 transitions. [2023-08-26 08:50:08,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49356435643564356 [2023-08-26 08:50:08,647 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2991 transitions. [2023-08-26 08:50:08,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2991 transitions. [2023-08-26 08:50:08,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:50:08,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2991 transitions. [2023-08-26 08:50:08,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 997.0) internal successors, (2991), 3 states have internal predecessors, (2991), 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) [2023-08-26 08:50:08,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2020.0) internal successors, (8080), 4 states have internal predecessors, (8080), 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) [2023-08-26 08:50:08,663 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2020.0) internal successors, (8080), 4 states have internal predecessors, (8080), 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) [2023-08-26 08:50:08,663 INFO L175 Difference]: Start difference. First operand has 247 places, 251 transitions, 520 flow. Second operand 3 states and 2991 transitions. [2023-08-26 08:50:08,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 273 transitions, 762 flow [2023-08-26 08:50:08,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 273 transitions, 761 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 08:50:08,667 INFO L231 Difference]: Finished difference. Result has 245 places, 249 transitions, 525 flow [2023-08-26 08:50:08,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2020, PETRI_DIFFERENCE_MINUEND_FLOW=511, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=525, PETRI_PLACES=245, PETRI_TRANSITIONS=249} [2023-08-26 08:50:08,668 INFO L281 CegarLoopForPetriNet]: 317 programPoint places, -72 predicate places. [2023-08-26 08:50:08,669 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 249 transitions, 525 flow [2023-08-26 08:50:08,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 967.0) internal successors, (2901), 3 states have internal predecessors, (2901), 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) [2023-08-26 08:50:08,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:50:08,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 08:50:08,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 08:50:08,670 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 192 more)] === [2023-08-26 08:50:08,671 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:50:08,671 INFO L85 PathProgramCache]: Analyzing trace with hash -193537966, now seen corresponding path program 1 times [2023-08-26 08:50:08,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:50:08,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644297779] [2023-08-26 08:50:08,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:50:08,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:50:08,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:50:08,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 08:50:08,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:50:08,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644297779] [2023-08-26 08:50:08,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644297779] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 08:50:08,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 08:50:08,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 08:50:08,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243316130] [2023-08-26 08:50:08,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:50:08,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 08:50:08,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:50:08,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 08:50:08,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 08:50:08,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 945 out of 2020 [2023-08-26 08:50:08,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 249 transitions, 525 flow. Second operand has 3 states, 3 states have (on average 949.0) internal successors, (2847), 3 states have internal predecessors, (2847), 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) [2023-08-26 08:50:08,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:50:08,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 945 of 2020 [2023-08-26 08:50:08,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:50:14,908 INFO L124 PetriNetUnfolderBase]: 28980/77156 cut-off events. [2023-08-26 08:50:14,908 INFO L125 PetriNetUnfolderBase]: For 800/800 co-relation queries the response was YES. [2023-08-26 08:50:15,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118614 conditions, 77156 events. 28980/77156 cut-off events. For 800/800 co-relation queries the response was YES. Maximal size of possible extension queue 1634. Compared 967746 event pairs, 25096 based on Foata normal form. 0/66613 useless extension candidates. Maximal degree in co-relation 118609. Up to 40469 conditions per place. [2023-08-26 08:50:15,562 INFO L140 encePairwiseOnDemand]: 2013/2020 looper letters, 78 selfloop transitions, 1 changer transitions 0/243 dead transitions. [2023-08-26 08:50:15,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 243 transitions, 671 flow [2023-08-26 08:50:15,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 08:50:15,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 08:50:15,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2919 transitions. [2023-08-26 08:50:15,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48168316831683167 [2023-08-26 08:50:15,568 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2919 transitions. [2023-08-26 08:50:15,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2919 transitions. [2023-08-26 08:50:15,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:50:15,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2919 transitions. [2023-08-26 08:50:15,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 973.0) internal successors, (2919), 3 states have internal predecessors, (2919), 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) [2023-08-26 08:50:15,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2020.0) internal successors, (8080), 4 states have internal predecessors, (8080), 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) [2023-08-26 08:50:15,582 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2020.0) internal successors, (8080), 4 states have internal predecessors, (8080), 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) [2023-08-26 08:50:15,582 INFO L175 Difference]: Start difference. First operand has 245 places, 249 transitions, 525 flow. Second operand 3 states and 2919 transitions. [2023-08-26 08:50:15,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 243 transitions, 671 flow [2023-08-26 08:50:15,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 243 transitions, 671 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 08:50:15,586 INFO L231 Difference]: Finished difference. Result has 241 places, 243 transitions, 515 flow [2023-08-26 08:50:15,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2020, PETRI_DIFFERENCE_MINUEND_FLOW=513, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=515, PETRI_PLACES=241, PETRI_TRANSITIONS=243} [2023-08-26 08:50:15,589 INFO L281 CegarLoopForPetriNet]: 317 programPoint places, -76 predicate places. [2023-08-26 08:50:15,589 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 243 transitions, 515 flow [2023-08-26 08:50:15,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 949.0) internal successors, (2847), 3 states have internal predecessors, (2847), 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) [2023-08-26 08:50:15,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:50:15,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 08:50:15,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 08:50:15,590 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 192 more)] === [2023-08-26 08:50:15,590 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:50:15,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1333992070, now seen corresponding path program 1 times [2023-08-26 08:50:15,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:50:15,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706953554] [2023-08-26 08:50:15,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:50:15,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:50:15,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:50:15,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 08:50:15,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:50:15,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706953554] [2023-08-26 08:50:15,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706953554] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 08:50:15,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 08:50:15,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 08:50:15,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40389213] [2023-08-26 08:50:15,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:50:15,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 08:50:15,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:50:15,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 08:50:15,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 08:50:15,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 924 out of 2020 [2023-08-26 08:50:15,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 243 transitions, 515 flow. Second operand has 3 states, 3 states have (on average 928.3333333333334) internal successors, (2785), 3 states have internal predecessors, (2785), 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) [2023-08-26 08:50:15,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:50:15,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 924 of 2020 [2023-08-26 08:50:15,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:50:19,137 INFO L124 PetriNetUnfolderBase]: 12732/40867 cut-off events. [2023-08-26 08:50:19,137 INFO L125 PetriNetUnfolderBase]: For 522/522 co-relation queries the response was YES. [2023-08-26 08:50:19,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59234 conditions, 40867 events. 12732/40867 cut-off events. For 522/522 co-relation queries the response was YES. Maximal size of possible extension queue 1000. Compared 516137 event pairs, 10432 based on Foata normal form. 0/34066 useless extension candidates. Maximal degree in co-relation 59228. Up to 17766 conditions per place. [2023-08-26 08:50:19,342 INFO L140 encePairwiseOnDemand]: 2017/2020 looper letters, 66 selfloop transitions, 2 changer transitions 0/244 dead transitions. [2023-08-26 08:50:19,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 244 transitions, 653 flow [2023-08-26 08:50:19,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 08:50:19,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 08:50:19,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2840 transitions. [2023-08-26 08:50:19,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46864686468646866 [2023-08-26 08:50:19,348 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2840 transitions. [2023-08-26 08:50:19,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2840 transitions. [2023-08-26 08:50:19,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:50:19,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2840 transitions. [2023-08-26 08:50:19,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 946.6666666666666) internal successors, (2840), 3 states have internal predecessors, (2840), 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) [2023-08-26 08:50:19,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2020.0) internal successors, (8080), 4 states have internal predecessors, (8080), 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) [2023-08-26 08:50:19,361 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2020.0) internal successors, (8080), 4 states have internal predecessors, (8080), 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) [2023-08-26 08:50:19,361 INFO L175 Difference]: Start difference. First operand has 241 places, 243 transitions, 515 flow. Second operand 3 states and 2840 transitions. [2023-08-26 08:50:19,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 244 transitions, 653 flow [2023-08-26 08:50:19,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 244 transitions, 652 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 08:50:19,365 INFO L231 Difference]: Finished difference. Result has 243 places, 244 transitions, 526 flow [2023-08-26 08:50:19,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2020, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=526, PETRI_PLACES=243, PETRI_TRANSITIONS=244} [2023-08-26 08:50:19,368 INFO L281 CegarLoopForPetriNet]: 317 programPoint places, -74 predicate places. [2023-08-26 08:50:19,369 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 244 transitions, 526 flow [2023-08-26 08:50:19,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 928.3333333333334) internal successors, (2785), 3 states have internal predecessors, (2785), 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) [2023-08-26 08:50:19,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:50:19,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 08:50:19,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 08:50:19,370 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 192 more)] === [2023-08-26 08:50:19,370 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:50:19,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1554349247, now seen corresponding path program 1 times [2023-08-26 08:50:19,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:50:19,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979637189] [2023-08-26 08:50:19,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:50:19,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:50:19,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:50:19,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 08:50:19,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:50:19,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979637189] [2023-08-26 08:50:19,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979637189] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 08:50:19,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 08:50:19,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 08:50:19,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526368404] [2023-08-26 08:50:19,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:50:19,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 08:50:19,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:50:19,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 08:50:19,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 08:50:19,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 882 out of 2020 [2023-08-26 08:50:19,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 244 transitions, 526 flow. Second operand has 4 states, 4 states have (on average 885.5) internal successors, (3542), 4 states have internal predecessors, (3542), 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) [2023-08-26 08:50:19,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:50:19,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 882 of 2020 [2023-08-26 08:50:19,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:50:31,510 INFO L124 PetriNetUnfolderBase]: 70685/141470 cut-off events. [2023-08-26 08:50:31,510 INFO L125 PetriNetUnfolderBase]: For 1363/1363 co-relation queries the response was YES. [2023-08-26 08:50:32,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242035 conditions, 141470 events. 70685/141470 cut-off events. For 1363/1363 co-relation queries the response was YES. Maximal size of possible extension queue 2599. Compared 1567918 event pairs, 63517 based on Foata normal form. 0/117267 useless extension candidates. Maximal degree in co-relation 242028. Up to 98723 conditions per place. [2023-08-26 08:50:32,491 INFO L140 encePairwiseOnDemand]: 2016/2020 looper letters, 98 selfloop transitions, 3 changer transitions 0/245 dead transitions. [2023-08-26 08:50:32,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 245 transitions, 730 flow [2023-08-26 08:50:32,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 08:50:32,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 08:50:32,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3628 transitions. [2023-08-26 08:50:32,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.449009900990099 [2023-08-26 08:50:32,498 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3628 transitions. [2023-08-26 08:50:32,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3628 transitions. [2023-08-26 08:50:32,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:50:32,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3628 transitions. [2023-08-26 08:50:32,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 907.0) internal successors, (3628), 4 states have internal predecessors, (3628), 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) [2023-08-26 08:50:32,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 2020.0) internal successors, (10100), 5 states have internal predecessors, (10100), 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) [2023-08-26 08:50:32,515 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 2020.0) internal successors, (10100), 5 states have internal predecessors, (10100), 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) [2023-08-26 08:50:32,515 INFO L175 Difference]: Start difference. First operand has 243 places, 244 transitions, 526 flow. Second operand 4 states and 3628 transitions. [2023-08-26 08:50:32,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 245 transitions, 730 flow [2023-08-26 08:50:32,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 245 transitions, 726 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-26 08:50:32,524 INFO L231 Difference]: Finished difference. Result has 246 places, 245 transitions, 536 flow [2023-08-26 08:50:32,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2020, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=536, PETRI_PLACES=246, PETRI_TRANSITIONS=245} [2023-08-26 08:50:32,525 INFO L281 CegarLoopForPetriNet]: 317 programPoint places, -71 predicate places. [2023-08-26 08:50:32,525 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 245 transitions, 536 flow [2023-08-26 08:50:32,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 885.5) internal successors, (3542), 4 states have internal predecessors, (3542), 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) [2023-08-26 08:50:32,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:50:32,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 08:50:32,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 08:50:32,526 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 192 more)] === [2023-08-26 08:50:32,526 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:50:32,527 INFO L85 PathProgramCache]: Analyzing trace with hash 873401723, now seen corresponding path program 1 times [2023-08-26 08:50:32,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:50:32,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181800] [2023-08-26 08:50:32,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:50:32,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:50:32,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:50:32,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 08:50:32,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:50:32,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181800] [2023-08-26 08:50:32,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181800] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 08:50:32,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 08:50:32,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 08:50:32,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743927644] [2023-08-26 08:50:32,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:50:32,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 08:50:32,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:50:32,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 08:50:32,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 08:50:32,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 882 out of 2020 [2023-08-26 08:50:32,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 245 transitions, 536 flow. Second operand has 4 states, 4 states have (on average 885.75) internal successors, (3543), 4 states have internal predecessors, (3543), 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) [2023-08-26 08:50:32,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:50:32,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 882 of 2020 [2023-08-26 08:50:32,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:50:41,364 INFO L124 PetriNetUnfolderBase]: 48388/100548 cut-off events. [2023-08-26 08:50:41,364 INFO L125 PetriNetUnfolderBase]: For 2059/2059 co-relation queries the response was YES. [2023-08-26 08:50:41,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170205 conditions, 100548 events. 48388/100548 cut-off events. For 2059/2059 co-relation queries the response was YES. Maximal size of possible extension queue 2343. Compared 1126729 event pairs, 42512 based on Foata normal form. 0/82893 useless extension candidates. Maximal degree in co-relation 170197. Up to 67744 conditions per place. [2023-08-26 08:50:42,088 INFO L140 encePairwiseOnDemand]: 2015/2020 looper letters, 92 selfloop transitions, 4 changer transitions 0/246 dead transitions. [2023-08-26 08:50:42,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 246 transitions, 730 flow [2023-08-26 08:50:42,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 08:50:42,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 08:50:42,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3623 transitions. [2023-08-26 08:50:42,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4483910891089109 [2023-08-26 08:50:42,098 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3623 transitions. [2023-08-26 08:50:42,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3623 transitions. [2023-08-26 08:50:42,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:50:42,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3623 transitions. [2023-08-26 08:50:42,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 905.75) internal successors, (3623), 4 states have internal predecessors, (3623), 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) [2023-08-26 08:50:42,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 2020.0) internal successors, (10100), 5 states have internal predecessors, (10100), 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) [2023-08-26 08:50:42,114 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 2020.0) internal successors, (10100), 5 states have internal predecessors, (10100), 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) [2023-08-26 08:50:42,114 INFO L175 Difference]: Start difference. First operand has 246 places, 245 transitions, 536 flow. Second operand 4 states and 3623 transitions. [2023-08-26 08:50:42,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 246 transitions, 730 flow [2023-08-26 08:50:42,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 246 transitions, 724 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-26 08:50:42,119 INFO L231 Difference]: Finished difference. Result has 248 places, 246 transitions, 548 flow [2023-08-26 08:50:42,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2020, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=548, PETRI_PLACES=248, PETRI_TRANSITIONS=246} [2023-08-26 08:50:42,120 INFO L281 CegarLoopForPetriNet]: 317 programPoint places, -69 predicate places. [2023-08-26 08:50:42,120 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 246 transitions, 548 flow [2023-08-26 08:50:42,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 885.75) internal successors, (3543), 4 states have internal predecessors, (3543), 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) [2023-08-26 08:50:42,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:50:42,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 08:50:42,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 08:50:42,122 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 192 more)] === [2023-08-26 08:50:42,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:50:42,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1085916700, now seen corresponding path program 1 times [2023-08-26 08:50:42,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:50:42,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657474421] [2023-08-26 08:50:42,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:50:42,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:50:42,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:50:42,222 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-26 08:50:42,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:50:42,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657474421] [2023-08-26 08:50:42,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657474421] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 08:50:42,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 08:50:42,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 08:50:42,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090810783] [2023-08-26 08:50:42,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:50:42,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 08:50:42,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:50:42,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 08:50:42,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 08:50:42,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 894 out of 2020 [2023-08-26 08:50:42,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 246 transitions, 548 flow. Second operand has 4 states, 4 states have (on average 898.0) internal successors, (3592), 4 states have internal predecessors, (3592), 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) [2023-08-26 08:50:42,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:50:42,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 894 of 2020 [2023-08-26 08:50:42,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:50:51,440 INFO L124 PetriNetUnfolderBase]: 44080/110407 cut-off events. [2023-08-26 08:50:51,440 INFO L125 PetriNetUnfolderBase]: For 807/807 co-relation queries the response was YES. [2023-08-26 08:50:51,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172938 conditions, 110407 events. 44080/110407 cut-off events. For 807/807 co-relation queries the response was YES. Maximal size of possible extension queue 2432. Compared 1397761 event pairs, 38348 based on Foata normal form. 0/92629 useless extension candidates. Maximal degree in co-relation 172929. Up to 61488 conditions per place. [2023-08-26 08:50:52,246 INFO L140 encePairwiseOnDemand]: 2016/2020 looper letters, 94 selfloop transitions, 3 changer transitions 0/247 dead transitions. [2023-08-26 08:50:52,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 247 transitions, 744 flow [2023-08-26 08:50:52,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 08:50:52,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 08:50:52,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3670 transitions. [2023-08-26 08:50:52,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4542079207920792 [2023-08-26 08:50:52,252 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3670 transitions. [2023-08-26 08:50:52,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3670 transitions. [2023-08-26 08:50:52,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:50:52,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3670 transitions. [2023-08-26 08:50:52,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 917.5) internal successors, (3670), 4 states have internal predecessors, (3670), 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) [2023-08-26 08:50:52,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 2020.0) internal successors, (10100), 5 states have internal predecessors, (10100), 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) [2023-08-26 08:50:52,447 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 2020.0) internal successors, (10100), 5 states have internal predecessors, (10100), 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) [2023-08-26 08:50:52,448 INFO L175 Difference]: Start difference. First operand has 248 places, 246 transitions, 548 flow. Second operand 4 states and 3670 transitions. [2023-08-26 08:50:52,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 247 transitions, 744 flow [2023-08-26 08:50:52,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 247 transitions, 740 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 08:50:52,453 INFO L231 Difference]: Finished difference. Result has 250 places, 247 transitions, 558 flow [2023-08-26 08:50:52,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2020, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=558, PETRI_PLACES=250, PETRI_TRANSITIONS=247} [2023-08-26 08:50:52,454 INFO L281 CegarLoopForPetriNet]: 317 programPoint places, -67 predicate places. [2023-08-26 08:50:52,454 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 247 transitions, 558 flow [2023-08-26 08:50:52,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 898.0) internal successors, (3592), 4 states have internal predecessors, (3592), 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) [2023-08-26 08:50:52,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:50:52,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 08:50:52,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 08:50:52,456 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 192 more)] === [2023-08-26 08:50:52,456 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:50:52,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1617779649, now seen corresponding path program 1 times [2023-08-26 08:50:52,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:50:52,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80590507] [2023-08-26 08:50:52,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:50:52,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:50:52,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:50:52,695 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-26 08:50:52,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:50:52,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80590507] [2023-08-26 08:50:52,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80590507] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 08:50:52,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841573782] [2023-08-26 08:50:52,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:50:52,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 08:50:52,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 08:50:52,700 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 08:50:52,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-26 08:50:52,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:50:52,913 INFO L262 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-26 08:50:52,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 08:50:52,960 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-26 08:50:52,960 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 08:50:52,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841573782] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 08:50:52,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 08:50:52,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-08-26 08:50:52,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521780377] [2023-08-26 08:50:52,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:50:52,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 08:50:52,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:50:52,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 08:50:52,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-26 08:50:52,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 894 out of 2020 [2023-08-26 08:50:52,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 247 transitions, 558 flow. Second operand has 4 states, 4 states have (on average 898.25) internal successors, (3593), 4 states have internal predecessors, (3593), 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) [2023-08-26 08:50:52,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:50:52,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 894 of 2020 [2023-08-26 08:50:52,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:51:04,944 INFO L124 PetriNetUnfolderBase]: 70685/141473 cut-off events. [2023-08-26 08:51:04,944 INFO L125 PetriNetUnfolderBase]: For 1366/1366 co-relation queries the response was YES. [2023-08-26 08:51:05,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242057 conditions, 141473 events. 70685/141473 cut-off events. For 1366/1366 co-relation queries the response was YES. Maximal size of possible extension queue 2599. Compared 1568368 event pairs, 63517 based on Foata normal form. 0/117273 useless extension candidates. Maximal degree in co-relation 242047. Up to 98726 conditions per place. [2023-08-26 08:51:06,259 INFO L140 encePairwiseOnDemand]: 2016/2020 looper letters, 101 selfloop transitions, 3 changer transitions 0/248 dead transitions. [2023-08-26 08:51:06,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 248 transitions, 768 flow [2023-08-26 08:51:06,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 08:51:06,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 08:51:06,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3676 transitions. [2023-08-26 08:51:06,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45495049504950497 [2023-08-26 08:51:06,264 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3676 transitions. [2023-08-26 08:51:06,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3676 transitions. [2023-08-26 08:51:06,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:51:06,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3676 transitions. [2023-08-26 08:51:06,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 919.0) internal successors, (3676), 4 states have internal predecessors, (3676), 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) [2023-08-26 08:51:06,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 2020.0) internal successors, (10100), 5 states have internal predecessors, (10100), 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) [2023-08-26 08:51:06,277 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 2020.0) internal successors, (10100), 5 states have internal predecessors, (10100), 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) [2023-08-26 08:51:06,277 INFO L175 Difference]: Start difference. First operand has 250 places, 247 transitions, 558 flow. Second operand 4 states and 3676 transitions. [2023-08-26 08:51:06,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 248 transitions, 768 flow [2023-08-26 08:51:06,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 248 transitions, 762 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-26 08:51:06,282 INFO L231 Difference]: Finished difference. Result has 252 places, 248 transitions, 566 flow [2023-08-26 08:51:06,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2020, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=566, PETRI_PLACES=252, PETRI_TRANSITIONS=248} [2023-08-26 08:51:06,285 INFO L281 CegarLoopForPetriNet]: 317 programPoint places, -65 predicate places. [2023-08-26 08:51:06,285 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 248 transitions, 566 flow [2023-08-26 08:51:06,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 898.25) internal successors, (3593), 4 states have internal predecessors, (3593), 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) [2023-08-26 08:51:06,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:51:06,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 08:51:06,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-26 08:51:06,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-26 08:51:06,491 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 192 more)] === [2023-08-26 08:51:06,492 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:51:06,492 INFO L85 PathProgramCache]: Analyzing trace with hash -327593988, now seen corresponding path program 1 times [2023-08-26 08:51:06,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:51:06,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832909141] [2023-08-26 08:51:06,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:51:06,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:51:06,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:51:06,633 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-26 08:51:06,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:51:06,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832909141] [2023-08-26 08:51:06,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832909141] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 08:51:06,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 08:51:06,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 08:51:06,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540858702] [2023-08-26 08:51:06,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:51:06,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 08:51:06,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:51:06,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 08:51:06,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 08:51:06,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 894 out of 2020 [2023-08-26 08:51:06,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 248 transitions, 566 flow. Second operand has 4 states, 4 states have (on average 898.5) internal successors, (3594), 4 states have internal predecessors, (3594), 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) [2023-08-26 08:51:06,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:51:06,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 894 of 2020 [2023-08-26 08:51:06,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:51:16,109 INFO L124 PetriNetUnfolderBase]: 48388/100551 cut-off events. [2023-08-26 08:51:16,110 INFO L125 PetriNetUnfolderBase]: For 2061/2061 co-relation queries the response was YES. [2023-08-26 08:51:16,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170226 conditions, 100551 events. 48388/100551 cut-off events. For 2061/2061 co-relation queries the response was YES. Maximal size of possible extension queue 2343. Compared 1126638 event pairs, 42512 based on Foata normal form. 0/82899 useless extension candidates. Maximal degree in co-relation 170215. Up to 67748 conditions per place. [2023-08-26 08:51:16,905 INFO L140 encePairwiseOnDemand]: 2016/2020 looper letters, 96 selfloop transitions, 3 changer transitions 0/249 dead transitions. [2023-08-26 08:51:16,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 249 transitions, 766 flow [2023-08-26 08:51:16,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 08:51:16,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 08:51:16,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3670 transitions. [2023-08-26 08:51:16,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4542079207920792 [2023-08-26 08:51:16,910 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3670 transitions. [2023-08-26 08:51:16,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3670 transitions. [2023-08-26 08:51:16,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:51:16,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3670 transitions. [2023-08-26 08:51:16,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 917.5) internal successors, (3670), 4 states have internal predecessors, (3670), 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) [2023-08-26 08:51:16,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 2020.0) internal successors, (10100), 5 states have internal predecessors, (10100), 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) [2023-08-26 08:51:16,920 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 2020.0) internal successors, (10100), 5 states have internal predecessors, (10100), 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) [2023-08-26 08:51:16,920 INFO L175 Difference]: Start difference. First operand has 252 places, 248 transitions, 566 flow. Second operand 4 states and 3670 transitions. [2023-08-26 08:51:16,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 249 transitions, 766 flow [2023-08-26 08:51:16,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 249 transitions, 760 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-26 08:51:16,923 INFO L231 Difference]: Finished difference. Result has 254 places, 249 transitions, 574 flow [2023-08-26 08:51:16,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2020, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=574, PETRI_PLACES=254, PETRI_TRANSITIONS=249} [2023-08-26 08:51:16,924 INFO L281 CegarLoopForPetriNet]: 317 programPoint places, -63 predicate places. [2023-08-26 08:51:16,925 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 249 transitions, 574 flow [2023-08-26 08:51:16,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 898.5) internal successors, (3594), 4 states have internal predecessors, (3594), 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) [2023-08-26 08:51:16,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:51:16,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 08:51:16,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 08:51:16,926 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 192 more)] === [2023-08-26 08:51:16,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:51:16,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1044677286, now seen corresponding path program 1 times [2023-08-26 08:51:16,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:51:16,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89223810] [2023-08-26 08:51:16,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:51:16,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:51:16,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:51:17,402 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 08:51:17,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:51:17,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89223810] [2023-08-26 08:51:17,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89223810] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 08:51:17,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 08:51:17,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 08:51:17,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063064921] [2023-08-26 08:51:17,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:51:17,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 08:51:17,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:51:17,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 08:51:17,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 08:51:17,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 837 out of 2020 [2023-08-26 08:51:17,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 249 transitions, 574 flow. Second operand has 6 states, 6 states have (on average 840.8333333333334) internal successors, (5045), 6 states have internal predecessors, (5045), 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) [2023-08-26 08:51:17,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:51:17,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 837 of 2020 [2023-08-26 08:51:17,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand