/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/goblint-regression/28-race_reach_51-mutexptr_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 07:49:46,777 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 07:49:46,855 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 07:49:46,860 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 07:49:46,860 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 07:49:46,897 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 07:49:46,898 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 07:49:46,899 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 07:49:46,899 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 07:49:46,903 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 07:49:46,903 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 07:49:46,904 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 07:49:46,904 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 07:49:46,905 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 07:49:46,905 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 07:49:46,905 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 07:49:46,906 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 07:49:46,906 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 07:49:46,906 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 07:49:46,906 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 07:49:46,906 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 07:49:46,907 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 07:49:46,907 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 07:49:46,908 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 07:49:46,908 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 07:49:46,908 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 07:49:46,908 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 07:49:46,908 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 07:49:46,909 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 07:49:46,909 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 07:49:46,910 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 07:49:46,910 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 07:49:46,910 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 07:49:46,910 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 07:49:46,911 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 07:49:46,911 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-26 07:49:47,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 07:49:47,270 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 07:49:47,272 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 07:49:47,273 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 07:49:47,273 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 07:49:47,274 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_51-mutexptr_racefree.i [2023-08-26 07:49:48,530 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 07:49:48,752 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 07:49:48,753 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_51-mutexptr_racefree.i [2023-08-26 07:49:48,774 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/142be6688/c37686a9b6fe41d99a2ee35d5396f584/FLAGe0562ecf5 [2023-08-26 07:49:49,092 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/142be6688/c37686a9b6fe41d99a2ee35d5396f584 [2023-08-26 07:49:49,094 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 07:49:49,096 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 07:49:49,098 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 07:49:49,098 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 07:49:49,100 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 07:49:49,101 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 07:49:49" (1/1) ... [2023-08-26 07:49:49,102 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a93c768 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:49:49, skipping insertion in model container [2023-08-26 07:49:49,102 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 07:49:49" (1/1) ... [2023-08-26 07:49:49,146 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 07:49:49,510 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 07:49:49,526 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 07:49:49,558 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 07:49:49,560 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 07:49:49,594 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 07:49:49,638 INFO L206 MainTranslator]: Completed translation [2023-08-26 07:49:49,639 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:49:49 WrapperNode [2023-08-26 07:49:49,639 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 07:49:49,640 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 07:49:49,640 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 07:49:49,640 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 07:49:49,646 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:49:49" (1/1) ... [2023-08-26 07:49:49,679 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:49:49" (1/1) ... [2023-08-26 07:49:49,711 INFO L138 Inliner]: procedures = 170, calls = 38, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 111 [2023-08-26 07:49:49,711 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 07:49:49,713 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 07:49:49,713 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 07:49:49,713 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 07:49:49,720 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:49:49" (1/1) ... [2023-08-26 07:49:49,721 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:49:49" (1/1) ... [2023-08-26 07:49:49,733 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:49:49" (1/1) ... [2023-08-26 07:49:49,734 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:49:49" (1/1) ... [2023-08-26 07:49:49,742 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:49:49" (1/1) ... [2023-08-26 07:49:49,757 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:49:49" (1/1) ... [2023-08-26 07:49:49,759 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:49:49" (1/1) ... [2023-08-26 07:49:49,760 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:49:49" (1/1) ... [2023-08-26 07:49:49,763 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 07:49:49,763 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 07:49:49,763 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 07:49:49,764 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 07:49:49,764 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:49:49" (1/1) ... [2023-08-26 07:49:49,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 07:49:49,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:49:49,793 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 07:49:49,796 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 07:49:49,825 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 07:49:49,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 07:49:49,826 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 07:49:49,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 07:49:49,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 07:49:49,826 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 07:49:49,826 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 07:49:49,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 07:49:49,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 07:49:49,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 07:49:49,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 07:49:49,828 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 07:49:49,936 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 07:49:49,937 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 07:49:50,249 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 07:49:50,256 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 07:49:50,257 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-26 07:49:50,259 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 07:49:50 BoogieIcfgContainer [2023-08-26 07:49:50,259 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 07:49:50,261 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 07:49:50,261 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 07:49:50,264 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 07:49:50,264 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 07:49:49" (1/3) ... [2023-08-26 07:49:50,265 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18458f93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 07:49:50, skipping insertion in model container [2023-08-26 07:49:50,265 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:49:49" (2/3) ... [2023-08-26 07:49:50,265 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18458f93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 07:49:50, skipping insertion in model container [2023-08-26 07:49:50,265 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 07:49:50" (3/3) ... [2023-08-26 07:49:50,266 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_51-mutexptr_racefree.i [2023-08-26 07:49:50,282 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 07:49:50,282 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-08-26 07:49:50,282 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 07:49:50,344 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-26 07:49:50,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 186 transitions, 380 flow [2023-08-26 07:49:50,493 INFO L124 PetriNetUnfolderBase]: 19/246 cut-off events. [2023-08-26 07:49:50,494 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 07:49:50,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 246 events. 19/246 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 756 event pairs, 0 based on Foata normal form. 0/207 useless extension candidates. Maximal degree in co-relation 134. Up to 4 conditions per place. [2023-08-26 07:49:50,504 INFO L82 GeneralOperation]: Start removeDead. Operand has 176 places, 186 transitions, 380 flow [2023-08-26 07:49:50,510 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 176 places, 186 transitions, 380 flow [2023-08-26 07:49:50,514 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 07:49:50,526 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 176 places, 186 transitions, 380 flow [2023-08-26 07:49:50,530 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 176 places, 186 transitions, 380 flow [2023-08-26 07:49:50,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 186 transitions, 380 flow [2023-08-26 07:49:50,581 INFO L124 PetriNetUnfolderBase]: 19/246 cut-off events. [2023-08-26 07:49:50,581 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 07:49:50,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 246 events. 19/246 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 756 event pairs, 0 based on Foata normal form. 0/207 useless extension candidates. Maximal degree in co-relation 134. Up to 4 conditions per place. [2023-08-26 07:49:50,590 INFO L119 LiptonReduction]: Number of co-enabled transitions 9108 [2023-08-26 07:49:53,953 INFO L134 LiptonReduction]: Checked pairs total: 42775 [2023-08-26 07:49:53,953 INFO L136 LiptonReduction]: Total number of compositions: 126 [2023-08-26 07:49:53,972 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 07:49:53,979 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;@3f9946c8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 07:49:53,979 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-08-26 07:49:53,981 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 07:49:53,981 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 07:49:53,981 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:49:53,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:49:53,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 07:49:53,983 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-08-26 07:49:53,988 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:49:53,988 INFO L85 PathProgramCache]: Analyzing trace with hash 655, now seen corresponding path program 1 times [2023-08-26 07:49:53,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:49:53,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991008162] [2023-08-26 07:49:53,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:49:53,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:49:54,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:49:54,084 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 07:49:54,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:49:54,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991008162] [2023-08-26 07:49:54,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991008162] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:49:54,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:49:54,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 07:49:54,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996860457] [2023-08-26 07:49:54,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:49:54,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 07:49:54,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:49:54,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 07:49:54,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 07:49:54,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 312 [2023-08-26 07:49:54,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 83 transitions, 174 flow. Second operand has 2 states, 2 states have (on average 171.5) internal successors, (343), 2 states have internal predecessors, (343), 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 07:49:54,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:49:54,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 312 [2023-08-26 07:49:54,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:49:54,254 INFO L124 PetriNetUnfolderBase]: 169/713 cut-off events. [2023-08-26 07:49:54,255 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 07:49:54,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1101 conditions, 713 events. 169/713 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 4105 event pairs, 168 based on Foata normal form. 29/654 useless extension candidates. Maximal degree in co-relation 1039. Up to 378 conditions per place. [2023-08-26 07:49:54,260 INFO L140 encePairwiseOnDemand]: 303/312 looper letters, 30 selfloop transitions, 0 changer transitions 0/74 dead transitions. [2023-08-26 07:49:54,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 74 transitions, 216 flow [2023-08-26 07:49:54,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 07:49:54,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 07:49:54,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 381 transitions. [2023-08-26 07:49:54,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6105769230769231 [2023-08-26 07:49:54,273 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 381 transitions. [2023-08-26 07:49:54,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 381 transitions. [2023-08-26 07:49:54,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:49:54,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 381 transitions. [2023-08-26 07:49:54,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 190.5) internal successors, (381), 2 states have internal predecessors, (381), 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 07:49:54,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 312.0) internal successors, (936), 3 states have internal predecessors, (936), 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 07:49:54,283 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 312.0) internal successors, (936), 3 states have internal predecessors, (936), 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 07:49:54,285 INFO L175 Difference]: Start difference. First operand has 77 places, 83 transitions, 174 flow. Second operand 2 states and 381 transitions. [2023-08-26 07:49:54,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 74 transitions, 216 flow [2023-08-26 07:49:54,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 74 transitions, 216 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 07:49:54,289 INFO L231 Difference]: Finished difference. Result has 77 places, 74 transitions, 156 flow [2023-08-26 07:49:54,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=156, PETRI_PLACES=77, PETRI_TRANSITIONS=74} [2023-08-26 07:49:54,294 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 0 predicate places. [2023-08-26 07:49:54,294 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 74 transitions, 156 flow [2023-08-26 07:49:54,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 171.5) internal successors, (343), 2 states have internal predecessors, (343), 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 07:49:54,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:49:54,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 07:49:54,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 07:49:54,295 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-08-26 07:49:54,295 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:49:54,295 INFO L85 PathProgramCache]: Analyzing trace with hash 649045, now seen corresponding path program 1 times [2023-08-26 07:49:54,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:49:54,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44176390] [2023-08-26 07:49:54,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:49:54,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:49:54,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:49:54,393 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 07:49:54,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:49:54,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44176390] [2023-08-26 07:49:54,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44176390] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:49:54,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:49:54,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:49:54,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831915299] [2023-08-26 07:49:54,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:49:54,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:49:54,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:49:54,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:49:54,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:49:54,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 312 [2023-08-26 07:49:54,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 74 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 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 07:49:54,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:49:54,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 312 [2023-08-26 07:49:54,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:49:54,530 INFO L124 PetriNetUnfolderBase]: 168/713 cut-off events. [2023-08-26 07:49:54,530 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 07:49:54,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1091 conditions, 713 events. 168/713 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 4020 event pairs, 143 based on Foata normal form. 0/628 useless extension candidates. Maximal degree in co-relation 1087. Up to 353 conditions per place. [2023-08-26 07:49:54,534 INFO L140 encePairwiseOnDemand]: 309/312 looper letters, 43 selfloop transitions, 2 changer transitions 0/89 dead transitions. [2023-08-26 07:49:54,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 89 transitions, 276 flow [2023-08-26 07:49:54,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:49:54,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:49:54,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 535 transitions. [2023-08-26 07:49:54,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5715811965811965 [2023-08-26 07:49:54,538 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 535 transitions. [2023-08-26 07:49:54,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 535 transitions. [2023-08-26 07:49:54,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:49:54,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 535 transitions. [2023-08-26 07:49:54,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 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 07:49:54,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 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 07:49:54,543 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 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 07:49:54,543 INFO L175 Difference]: Start difference. First operand has 77 places, 74 transitions, 156 flow. Second operand 3 states and 535 transitions. [2023-08-26 07:49:54,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 89 transitions, 276 flow [2023-08-26 07:49:54,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 89 transitions, 276 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 07:49:54,546 INFO L231 Difference]: Finished difference. Result has 80 places, 74 transitions, 164 flow [2023-08-26 07:49:54,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=80, PETRI_TRANSITIONS=74} [2023-08-26 07:49:54,547 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 3 predicate places. [2023-08-26 07:49:54,547 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 74 transitions, 164 flow [2023-08-26 07:49:54,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 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 07:49:54,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:49:54,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 07:49:54,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 07:49:54,549 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-08-26 07:49:54,549 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:49:54,549 INFO L85 PathProgramCache]: Analyzing trace with hash 623754625, now seen corresponding path program 1 times [2023-08-26 07:49:54,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:49:54,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088140959] [2023-08-26 07:49:54,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:49:54,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:49:54,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:49:54,597 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 07:49:54,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:49:54,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088140959] [2023-08-26 07:49:54,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088140959] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:49:54,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:49:54,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:49:54,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136478084] [2023-08-26 07:49:54,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:49:54,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:49:54,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:49:54,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:49:54,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:49:54,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 312 [2023-08-26 07:49:54,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 74 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 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 07:49:54,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:49:54,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 312 [2023-08-26 07:49:54,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:49:54,719 INFO L124 PetriNetUnfolderBase]: 208/775 cut-off events. [2023-08-26 07:49:54,719 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2023-08-26 07:49:54,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1289 conditions, 775 events. 208/775 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 4236 event pairs, 165 based on Foata normal form. 0/720 useless extension candidates. Maximal degree in co-relation 1283. Up to 447 conditions per place. [2023-08-26 07:49:54,723 INFO L140 encePairwiseOnDemand]: 306/312 looper letters, 35 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-08-26 07:49:54,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 74 transitions, 243 flow [2023-08-26 07:49:54,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:49:54,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:49:54,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 509 transitions. [2023-08-26 07:49:54,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5438034188034188 [2023-08-26 07:49:54,725 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 509 transitions. [2023-08-26 07:49:54,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 509 transitions. [2023-08-26 07:49:54,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:49:54,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 509 transitions. [2023-08-26 07:49:54,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 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 07:49:54,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 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 07:49:54,729 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 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 07:49:54,730 INFO L175 Difference]: Start difference. First operand has 80 places, 74 transitions, 164 flow. Second operand 3 states and 509 transitions. [2023-08-26 07:49:54,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 74 transitions, 243 flow [2023-08-26 07:49:54,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 74 transitions, 237 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:49:54,732 INFO L231 Difference]: Finished difference. Result has 77 places, 72 transitions, 168 flow [2023-08-26 07:49:54,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=77, PETRI_TRANSITIONS=72} [2023-08-26 07:49:54,733 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 0 predicate places. [2023-08-26 07:49:54,733 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 72 transitions, 168 flow [2023-08-26 07:49:54,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 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 07:49:54,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:49:54,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:49:54,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 07:49:54,734 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-08-26 07:49:54,735 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:49:54,735 INFO L85 PathProgramCache]: Analyzing trace with hash 602878754, now seen corresponding path program 1 times [2023-08-26 07:49:54,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:49:54,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096625182] [2023-08-26 07:49:54,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:49:54,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:49:54,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:49:55,077 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 07:49:55,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:49:55,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096625182] [2023-08-26 07:49:55,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096625182] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:49:55,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:49:55,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 07:49:55,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261454028] [2023-08-26 07:49:55,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:49:55,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 07:49:55,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:49:55,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 07:49:55,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 07:49:55,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 312 [2023-08-26 07:49:55,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 72 transitions, 168 flow. Second operand has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 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 07:49:55,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:49:55,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 312 [2023-08-26 07:49:55,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:49:55,701 INFO L124 PetriNetUnfolderBase]: 1380/3004 cut-off events. [2023-08-26 07:49:55,701 INFO L125 PetriNetUnfolderBase]: For 124/124 co-relation queries the response was YES. [2023-08-26 07:49:55,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6062 conditions, 3004 events. 1380/3004 cut-off events. For 124/124 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 17780 event pairs, 273 based on Foata normal form. 0/2566 useless extension candidates. Maximal degree in co-relation 6056. Up to 1192 conditions per place. [2023-08-26 07:49:55,715 INFO L140 encePairwiseOnDemand]: 285/312 looper letters, 221 selfloop transitions, 40 changer transitions 0/267 dead transitions. [2023-08-26 07:49:55,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 267 transitions, 1111 flow [2023-08-26 07:49:55,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 07:49:55,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 07:49:55,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1024 transitions. [2023-08-26 07:49:55,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5470085470085471 [2023-08-26 07:49:55,718 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1024 transitions. [2023-08-26 07:49:55,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1024 transitions. [2023-08-26 07:49:55,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:49:55,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1024 transitions. [2023-08-26 07:49:55,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 170.66666666666666) internal successors, (1024), 6 states have internal predecessors, (1024), 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 07:49:55,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 312.0) internal successors, (2184), 7 states have internal predecessors, (2184), 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 07:49:55,725 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 312.0) internal successors, (2184), 7 states have internal predecessors, (2184), 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 07:49:55,725 INFO L175 Difference]: Start difference. First operand has 77 places, 72 transitions, 168 flow. Second operand 6 states and 1024 transitions. [2023-08-26 07:49:55,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 267 transitions, 1111 flow [2023-08-26 07:49:55,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 267 transitions, 1111 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 07:49:55,730 INFO L231 Difference]: Finished difference. Result has 85 places, 112 transitions, 466 flow [2023-08-26 07:49:55,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=466, PETRI_PLACES=85, PETRI_TRANSITIONS=112} [2023-08-26 07:49:55,731 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 8 predicate places. [2023-08-26 07:49:55,731 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 112 transitions, 466 flow [2023-08-26 07:49:55,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 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 07:49:55,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:49:55,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:49:55,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 07:49:55,732 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONASSERT === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-08-26 07:49:55,733 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:49:55,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1772247075, now seen corresponding path program 1 times [2023-08-26 07:49:55,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:49:55,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186521137] [2023-08-26 07:49:55,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:49:55,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:49:55,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:49:55,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:49:55,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:49:55,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186521137] [2023-08-26 07:49:55,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186521137] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:49:55,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404082600] [2023-08-26 07:49:55,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:49:55,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:49:55,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:49:55,781 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 07:49:55,810 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 07:49:55,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:49:55,891 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 07:49:55,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:49:55,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:49:55,941 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 07:49:55,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:49:55,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404082600] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 07:49:55,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 07:49:55,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-26 07:49:55,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396885734] [2023-08-26 07:49:55,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 07:49:55,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 07:49:55,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:49:55,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 07:49:55,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 07:49:55,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 312 [2023-08-26 07:49:55,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 112 transitions, 466 flow. Second operand has 7 states, 7 states have (on average 165.57142857142858) internal successors, (1159), 7 states have internal predecessors, (1159), 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 07:49:55,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:49:55,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 312 [2023-08-26 07:49:55,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:49:56,013 INFO L124 PetriNetUnfolderBase]: 28/144 cut-off events. [2023-08-26 07:49:56,013 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2023-08-26 07:49:56,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 345 conditions, 144 events. 28/144 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 278 event pairs, 13 based on Foata normal form. 15/159 useless extension candidates. Maximal degree in co-relation 334. Up to 58 conditions per place. [2023-08-26 07:49:56,014 INFO L140 encePairwiseOnDemand]: 309/312 looper letters, 23 selfloop transitions, 2 changer transitions 9/57 dead transitions. [2023-08-26 07:49:56,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 57 transitions, 261 flow [2023-08-26 07:49:56,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 07:49:56,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 07:49:56,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 686 transitions. [2023-08-26 07:49:56,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5496794871794872 [2023-08-26 07:49:56,017 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 686 transitions. [2023-08-26 07:49:56,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 686 transitions. [2023-08-26 07:49:56,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:49:56,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 686 transitions. [2023-08-26 07:49:56,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 171.5) internal successors, (686), 4 states have internal predecessors, (686), 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 07:49:56,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 312.0) internal successors, (1560), 5 states have internal predecessors, (1560), 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 07:49:56,022 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 312.0) internal successors, (1560), 5 states have internal predecessors, (1560), 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 07:49:56,022 INFO L175 Difference]: Start difference. First operand has 85 places, 112 transitions, 466 flow. Second operand 4 states and 686 transitions. [2023-08-26 07:49:56,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 57 transitions, 261 flow [2023-08-26 07:49:56,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 57 transitions, 189 flow, removed 12 selfloop flow, removed 12 redundant places. [2023-08-26 07:49:56,026 INFO L231 Difference]: Finished difference. Result has 51 places, 37 transitions, 85 flow [2023-08-26 07:49:56,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=85, PETRI_PLACES=51, PETRI_TRANSITIONS=37} [2023-08-26 07:49:56,028 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -26 predicate places. [2023-08-26 07:49:56,029 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 37 transitions, 85 flow [2023-08-26 07:49:56,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 165.57142857142858) internal successors, (1159), 7 states have internal predecessors, (1159), 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 07:49:56,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:49:56,030 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 07:49:56,039 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 07:49:56,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:49:56,236 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-08-26 07:49:56,236 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:49:56,236 INFO L85 PathProgramCache]: Analyzing trace with hash -922026797, now seen corresponding path program 1 times [2023-08-26 07:49:56,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:49:56,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214195818] [2023-08-26 07:49:56,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:49:56,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:49:56,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:49:56,532 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 07:49:56,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:49:56,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214195818] [2023-08-26 07:49:56,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214195818] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:49:56,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:49:56,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 07:49:56,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046555268] [2023-08-26 07:49:56,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:49:56,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 07:49:56,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:49:56,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 07:49:56,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 07:49:56,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 312 [2023-08-26 07:49:56,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 37 transitions, 85 flow. Second operand has 6 states, 6 states have (on average 128.0) internal successors, (768), 6 states have internal predecessors, (768), 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 07:49:56,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:49:56,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 312 [2023-08-26 07:49:56,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:49:56,599 INFO L124 PetriNetUnfolderBase]: 58/156 cut-off events. [2023-08-26 07:49:56,599 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-08-26 07:49:56,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 156 events. 58/156 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 264 event pairs, 48 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 349. Up to 126 conditions per place. [2023-08-26 07:49:56,600 INFO L140 encePairwiseOnDemand]: 306/312 looper letters, 36 selfloop transitions, 5 changer transitions 0/44 dead transitions. [2023-08-26 07:49:56,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 44 transitions, 189 flow [2023-08-26 07:49:56,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 07:49:56,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 07:49:56,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 792 transitions. [2023-08-26 07:49:56,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4230769230769231 [2023-08-26 07:49:56,603 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 792 transitions. [2023-08-26 07:49:56,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 792 transitions. [2023-08-26 07:49:56,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:49:56,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 792 transitions. [2023-08-26 07:49:56,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 132.0) internal successors, (792), 6 states have internal predecessors, (792), 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 07:49:56,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 312.0) internal successors, (2184), 7 states have internal predecessors, (2184), 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 07:49:56,608 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 312.0) internal successors, (2184), 7 states have internal predecessors, (2184), 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 07:49:56,608 INFO L175 Difference]: Start difference. First operand has 51 places, 37 transitions, 85 flow. Second operand 6 states and 792 transitions. [2023-08-26 07:49:56,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 44 transitions, 189 flow [2023-08-26 07:49:56,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 44 transitions, 182 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:49:56,610 INFO L231 Difference]: Finished difference. Result has 48 places, 36 transitions, 90 flow [2023-08-26 07:49:56,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=90, PETRI_PLACES=48, PETRI_TRANSITIONS=36} [2023-08-26 07:49:56,610 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -29 predicate places. [2023-08-26 07:49:56,610 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 36 transitions, 90 flow [2023-08-26 07:49:56,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 128.0) internal successors, (768), 6 states have internal predecessors, (768), 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 07:49:56,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:49:56,611 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:49:56,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 07:49:56,611 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-08-26 07:49:56,612 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:49:56,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1576167059, now seen corresponding path program 1 times [2023-08-26 07:49:56,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:49:56,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038449719] [2023-08-26 07:49:56,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:49:56,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:49:56,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:49:57,029 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 07:49:57,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:49:57,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038449719] [2023-08-26 07:49:57,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038449719] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:49:57,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:49:57,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 07:49:57,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453973830] [2023-08-26 07:49:57,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:49:57,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 07:49:57,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:49:57,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 07:49:57,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 07:49:57,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 312 [2023-08-26 07:49:57,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 36 transitions, 90 flow. Second operand has 6 states, 6 states have (on average 130.33333333333334) internal successors, (782), 6 states have internal predecessors, (782), 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 07:49:57,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:49:57,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 312 [2023-08-26 07:49:57,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:49:57,114 INFO L124 PetriNetUnfolderBase]: 56/151 cut-off events. [2023-08-26 07:49:57,114 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:49:57,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 357 conditions, 151 events. 56/151 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 256 event pairs, 48 based on Foata normal form. 3/152 useless extension candidates. Maximal degree in co-relation 352. Up to 126 conditions per place. [2023-08-26 07:49:57,115 INFO L140 encePairwiseOnDemand]: 307/312 looper letters, 0 selfloop transitions, 0 changer transitions 43/43 dead transitions. [2023-08-26 07:49:57,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 43 transitions, 188 flow [2023-08-26 07:49:57,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 07:49:57,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 07:49:57,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 791 transitions. [2023-08-26 07:49:57,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42254273504273504 [2023-08-26 07:49:57,117 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 791 transitions. [2023-08-26 07:49:57,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 791 transitions. [2023-08-26 07:49:57,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:49:57,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 791 transitions. [2023-08-26 07:49:57,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 131.83333333333334) internal successors, (791), 6 states have internal predecessors, (791), 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 07:49:57,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 312.0) internal successors, (2184), 7 states have internal predecessors, (2184), 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 07:49:57,122 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 312.0) internal successors, (2184), 7 states have internal predecessors, (2184), 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 07:49:57,122 INFO L175 Difference]: Start difference. First operand has 48 places, 36 transitions, 90 flow. Second operand 6 states and 791 transitions. [2023-08-26 07:49:57,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 43 transitions, 188 flow [2023-08-26 07:49:57,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 43 transitions, 178 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-26 07:49:57,124 INFO L231 Difference]: Finished difference. Result has 47 places, 0 transitions, 0 flow [2023-08-26 07:49:57,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=47, PETRI_TRANSITIONS=0} [2023-08-26 07:49:57,124 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -30 predicate places. [2023-08-26 07:49:57,124 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 0 transitions, 0 flow [2023-08-26 07:49:57,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 130.33333333333334) internal successors, (782), 6 states have internal predecessors, (782), 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 07:49:57,127 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (17 of 18 remaining) [2023-08-26 07:49:57,127 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (16 of 18 remaining) [2023-08-26 07:49:57,127 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (15 of 18 remaining) [2023-08-26 07:49:57,128 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (14 of 18 remaining) [2023-08-26 07:49:57,128 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (13 of 18 remaining) [2023-08-26 07:49:57,128 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 18 remaining) [2023-08-26 07:49:57,128 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (11 of 18 remaining) [2023-08-26 07:49:57,128 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (10 of 18 remaining) [2023-08-26 07:49:57,128 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (9 of 18 remaining) [2023-08-26 07:49:57,128 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (8 of 18 remaining) [2023-08-26 07:49:57,128 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (7 of 18 remaining) [2023-08-26 07:49:57,129 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 18 remaining) [2023-08-26 07:49:57,129 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 18 remaining) [2023-08-26 07:49:57,129 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (4 of 18 remaining) [2023-08-26 07:49:57,129 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (3 of 18 remaining) [2023-08-26 07:49:57,129 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (2 of 18 remaining) [2023-08-26 07:49:57,129 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONASSERT (1 of 18 remaining) [2023-08-26 07:49:57,129 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 18 remaining) [2023-08-26 07:49:57,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 07:49:57,130 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:49:57,131 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-26 07:49:57,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 186 transitions, 380 flow [2023-08-26 07:49:57,155 INFO L124 PetriNetUnfolderBase]: 19/246 cut-off events. [2023-08-26 07:49:57,155 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 07:49:57,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 246 events. 19/246 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 756 event pairs, 0 based on Foata normal form. 0/207 useless extension candidates. Maximal degree in co-relation 134. Up to 4 conditions per place. [2023-08-26 07:49:57,156 INFO L82 GeneralOperation]: Start removeDead. Operand has 176 places, 186 transitions, 380 flow [2023-08-26 07:49:57,157 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 171 places, 180 transitions, 365 flow [2023-08-26 07:49:57,157 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 07:49:57,157 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 171 places, 180 transitions, 365 flow [2023-08-26 07:49:57,158 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 171 places, 180 transitions, 365 flow [2023-08-26 07:49:57,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 171 places, 180 transitions, 365 flow [2023-08-26 07:49:57,175 INFO L124 PetriNetUnfolderBase]: 18/240 cut-off events. [2023-08-26 07:49:57,175 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:49:57,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 240 events. 18/240 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 736 event pairs, 0 based on Foata normal form. 0/202 useless extension candidates. Maximal degree in co-relation 134. Up to 4 conditions per place. [2023-08-26 07:49:57,180 INFO L119 LiptonReduction]: Number of co-enabled transitions 9108 [2023-08-26 07:50:00,263 INFO L134 LiptonReduction]: Checked pairs total: 43544 [2023-08-26 07:50:00,263 INFO L136 LiptonReduction]: Total number of compositions: 117 [2023-08-26 07:50:00,265 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 07:50:00,265 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;@3f9946c8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 07:50:00,266 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 07:50:00,268 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 07:50:00,268 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2023-08-26 07:50:00,268 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:50:00,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:50:00,268 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-26 07:50:00,269 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 07:50:00,269 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:50:00,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1326749420, now seen corresponding path program 1 times [2023-08-26 07:50:00,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:50:00,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642333606] [2023-08-26 07:50:00,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:50:00,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:50:00,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 07:50:00,288 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 07:50:00,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 07:50:00,345 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 07:50:00,345 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 07:50:00,345 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 07:50:00,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 07:50:00,346 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 07:50:00,347 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-26 07:50:00,348 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 07:50:00,348 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-26 07:50:00,387 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-26 07:50:00,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 242 places, 257 transitions, 532 flow [2023-08-26 07:50:00,432 INFO L124 PetriNetUnfolderBase]: 34/408 cut-off events. [2023-08-26 07:50:00,432 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 07:50:00,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 422 conditions, 408 events. 34/408 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1633 event pairs, 0 based on Foata normal form. 0/341 useless extension candidates. Maximal degree in co-relation 248. Up to 8 conditions per place. [2023-08-26 07:50:00,436 INFO L82 GeneralOperation]: Start removeDead. Operand has 242 places, 257 transitions, 532 flow [2023-08-26 07:50:00,439 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 242 places, 257 transitions, 532 flow [2023-08-26 07:50:00,439 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 07:50:00,439 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 242 places, 257 transitions, 532 flow [2023-08-26 07:50:00,439 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 242 places, 257 transitions, 532 flow [2023-08-26 07:50:00,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 242 places, 257 transitions, 532 flow [2023-08-26 07:50:00,478 INFO L124 PetriNetUnfolderBase]: 34/408 cut-off events. [2023-08-26 07:50:00,479 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 07:50:00,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 422 conditions, 408 events. 34/408 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1633 event pairs, 0 based on Foata normal form. 0/341 useless extension candidates. Maximal degree in co-relation 248. Up to 8 conditions per place. [2023-08-26 07:50:00,497 INFO L119 LiptonReduction]: Number of co-enabled transitions 29256 [2023-08-26 07:50:03,739 INFO L134 LiptonReduction]: Checked pairs total: 152993 [2023-08-26 07:50:03,739 INFO L136 LiptonReduction]: Total number of compositions: 150 [2023-08-26 07:50:03,741 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 07:50:03,741 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;@3f9946c8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 07:50:03,741 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2023-08-26 07:50:03,742 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 07:50:03,742 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-08-26 07:50:03,742 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:50:03,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:50:03,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 07:50:03,743 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-26 07:50:03,743 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:50:03,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1251, now seen corresponding path program 1 times [2023-08-26 07:50:03,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:50:03,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113406456] [2023-08-26 07:50:03,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:50:03,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:50:03,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:50:03,748 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 07:50:03,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:50:03,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113406456] [2023-08-26 07:50:03,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113406456] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:50:03,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:50:03,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 07:50:03,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793416075] [2023-08-26 07:50:03,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:50:03,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 07:50:03,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:50:03,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 07:50:03,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 07:50:03,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 407 [2023-08-26 07:50:03,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 134 transitions, 286 flow. Second operand has 2 states, 2 states have (on average 234.5) internal successors, (469), 2 states have internal predecessors, (469), 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 07:50:03,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:50:03,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 407 [2023-08-26 07:50:03,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:50:05,143 INFO L124 PetriNetUnfolderBase]: 6273/15755 cut-off events. [2023-08-26 07:50:05,144 INFO L125 PetriNetUnfolderBase]: For 94/94 co-relation queries the response was YES. [2023-08-26 07:50:05,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25757 conditions, 15755 events. 6273/15755 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 151452 event pairs, 6255 based on Foata normal form. 1404/15436 useless extension candidates. Maximal degree in co-relation 16550. Up to 9903 conditions per place. [2023-08-26 07:50:05,243 INFO L140 encePairwiseOnDemand]: 392/407 looper letters, 48 selfloop transitions, 0 changer transitions 0/119 dead transitions. [2023-08-26 07:50:05,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 119 transitions, 352 flow [2023-08-26 07:50:05,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 07:50:05,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 07:50:05,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 531 transitions. [2023-08-26 07:50:05,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6523341523341524 [2023-08-26 07:50:05,246 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 531 transitions. [2023-08-26 07:50:05,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 531 transitions. [2023-08-26 07:50:05,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:50:05,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 531 transitions. [2023-08-26 07:50:05,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 265.5) internal successors, (531), 2 states have internal predecessors, (531), 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 07:50:05,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 407.0) internal successors, (1221), 3 states have internal predecessors, (1221), 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 07:50:05,250 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 407.0) internal successors, (1221), 3 states have internal predecessors, (1221), 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 07:50:05,250 INFO L175 Difference]: Start difference. First operand has 123 places, 134 transitions, 286 flow. Second operand 2 states and 531 transitions. [2023-08-26 07:50:05,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 119 transitions, 352 flow [2023-08-26 07:50:05,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 119 transitions, 352 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 07:50:05,253 INFO L231 Difference]: Finished difference. Result has 123 places, 119 transitions, 256 flow [2023-08-26 07:50:05,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=256, PETRI_PLACES=123, PETRI_TRANSITIONS=119} [2023-08-26 07:50:05,256 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, 0 predicate places. [2023-08-26 07:50:05,257 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 119 transitions, 256 flow [2023-08-26 07:50:05,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 234.5) internal successors, (469), 2 states have internal predecessors, (469), 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 07:50:05,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:50:05,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 07:50:05,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 07:50:05,257 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-26 07:50:05,258 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:50:05,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1238948, now seen corresponding path program 1 times [2023-08-26 07:50:05,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:50:05,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605064999] [2023-08-26 07:50:05,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:50:05,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:50:05,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:50:05,275 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 07:50:05,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:50:05,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605064999] [2023-08-26 07:50:05,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605064999] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:50:05,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:50:05,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:50:05,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993157104] [2023-08-26 07:50:05,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:50:05,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:50:05,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:50:05,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:50:05,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:50:05,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 407 [2023-08-26 07:50:05,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 119 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 226.66666666666666) internal successors, (680), 3 states have internal predecessors, (680), 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 07:50:05,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:50:05,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 407 [2023-08-26 07:50:05,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:50:06,582 INFO L124 PetriNetUnfolderBase]: 6272/15725 cut-off events. [2023-08-26 07:50:06,583 INFO L125 PetriNetUnfolderBase]: For 84/84 co-relation queries the response was YES. [2023-08-26 07:50:06,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25720 conditions, 15725 events. 6272/15725 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 151558 event pairs, 5360 based on Foata normal form. 0/13990 useless extension candidates. Maximal degree in co-relation 25715. Up to 9877 conditions per place. [2023-08-26 07:50:06,668 INFO L140 encePairwiseOnDemand]: 404/407 looper letters, 63 selfloop transitions, 2 changer transitions 0/136 dead transitions. [2023-08-26 07:50:06,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 136 transitions, 420 flow [2023-08-26 07:50:06,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:50:06,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:50:06,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 744 transitions. [2023-08-26 07:50:06,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6093366093366094 [2023-08-26 07:50:06,672 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 744 transitions. [2023-08-26 07:50:06,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 744 transitions. [2023-08-26 07:50:06,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:50:06,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 744 transitions. [2023-08-26 07:50:06,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 248.0) internal successors, (744), 3 states have internal predecessors, (744), 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 07:50:06,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 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 07:50:06,676 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 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 07:50:06,676 INFO L175 Difference]: Start difference. First operand has 123 places, 119 transitions, 256 flow. Second operand 3 states and 744 transitions. [2023-08-26 07:50:06,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 136 transitions, 420 flow [2023-08-26 07:50:06,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 136 transitions, 420 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 07:50:06,680 INFO L231 Difference]: Finished difference. Result has 126 places, 120 transitions, 268 flow [2023-08-26 07:50:06,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=268, PETRI_PLACES=126, PETRI_TRANSITIONS=120} [2023-08-26 07:50:06,681 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, 3 predicate places. [2023-08-26 07:50:06,681 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 120 transitions, 268 flow [2023-08-26 07:50:06,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 226.66666666666666) internal successors, (680), 3 states have internal predecessors, (680), 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 07:50:06,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:50:06,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 07:50:06,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 07:50:06,682 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-26 07:50:06,683 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:50:06,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1190885617, now seen corresponding path program 1 times [2023-08-26 07:50:06,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:50:06,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320802677] [2023-08-26 07:50:06,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:50:06,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:50:06,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:50:06,700 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 07:50:06,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:50:06,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320802677] [2023-08-26 07:50:06,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320802677] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:50:06,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:50:06,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:50:06,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031329810] [2023-08-26 07:50:06,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:50:06,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:50:06,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:50:06,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:50:06,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:50:06,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 407 [2023-08-26 07:50:06,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 120 transitions, 268 flow. Second operand has 3 states, 3 states have (on average 214.66666666666666) internal successors, (644), 3 states have internal predecessors, (644), 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 07:50:06,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:50:06,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 407 [2023-08-26 07:50:06,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:50:07,915 INFO L124 PetriNetUnfolderBase]: 7650/17239 cut-off events. [2023-08-26 07:50:07,915 INFO L125 PetriNetUnfolderBase]: For 706/706 co-relation queries the response was YES. [2023-08-26 07:50:07,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29992 conditions, 17239 events. 7650/17239 cut-off events. For 706/706 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 157172 event pairs, 6745 based on Foata normal form. 0/16039 useless extension candidates. Maximal degree in co-relation 29985. Up to 12017 conditions per place. [2023-08-26 07:50:07,992 INFO L140 encePairwiseOnDemand]: 398/407 looper letters, 56 selfloop transitions, 3 changer transitions 0/121 dead transitions. [2023-08-26 07:50:07,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 121 transitions, 400 flow [2023-08-26 07:50:07,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:50:07,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:50:07,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 702 transitions. [2023-08-26 07:50:07,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5749385749385749 [2023-08-26 07:50:07,995 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 702 transitions. [2023-08-26 07:50:07,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 702 transitions. [2023-08-26 07:50:07,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:50:07,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 702 transitions. [2023-08-26 07:50:07,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 234.0) internal successors, (702), 3 states have internal predecessors, (702), 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 07:50:07,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 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 07:50:08,000 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 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 07:50:08,000 INFO L175 Difference]: Start difference. First operand has 126 places, 120 transitions, 268 flow. Second operand 3 states and 702 transitions. [2023-08-26 07:50:08,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 121 transitions, 400 flow [2023-08-26 07:50:08,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 121 transitions, 397 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 07:50:08,003 INFO L231 Difference]: Finished difference. Result has 122 places, 117 transitions, 277 flow [2023-08-26 07:50:08,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=277, PETRI_PLACES=122, PETRI_TRANSITIONS=117} [2023-08-26 07:50:08,004 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, -1 predicate places. [2023-08-26 07:50:08,004 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 117 transitions, 277 flow [2023-08-26 07:50:08,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 214.66666666666666) internal successors, (644), 3 states have internal predecessors, (644), 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 07:50:08,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:50:08,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:50:08,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 07:50:08,005 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-26 07:50:08,005 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:50:08,005 INFO L85 PathProgramCache]: Analyzing trace with hash -999722278, now seen corresponding path program 1 times [2023-08-26 07:50:08,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:50:08,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104475062] [2023-08-26 07:50:08,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:50:08,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:50:08,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:50:08,144 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 07:50:08,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:50:08,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104475062] [2023-08-26 07:50:08,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104475062] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:50:08,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:50:08,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 07:50:08,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078762905] [2023-08-26 07:50:08,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:50:08,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 07:50:08,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:50:08,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 07:50:08,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 07:50:08,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 407 [2023-08-26 07:50:08,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 117 transitions, 277 flow. Second operand has 6 states, 6 states have (on average 163.16666666666666) internal successors, (979), 6 states have internal predecessors, (979), 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 07:50:08,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:50:08,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 407 [2023-08-26 07:50:08,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:50:23,614 INFO L124 PetriNetUnfolderBase]: 152798/241153 cut-off events. [2023-08-26 07:50:23,614 INFO L125 PetriNetUnfolderBase]: For 12792/12792 co-relation queries the response was YES. [2023-08-26 07:50:23,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 487590 conditions, 241153 events. 152798/241153 cut-off events. For 12792/12792 co-relation queries the response was YES. Maximal size of possible extension queue 2792. Compared 2049968 event pairs, 28798 based on Foata normal form. 0/208378 useless extension candidates. Maximal degree in co-relation 487583. Up to 81441 conditions per place. [2023-08-26 07:50:24,865 INFO L140 encePairwiseOnDemand]: 356/407 looper letters, 404 selfloop transitions, 96 changer transitions 0/512 dead transitions. [2023-08-26 07:50:24,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 512 transitions, 2159 flow [2023-08-26 07:50:24,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 07:50:24,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 07:50:24,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1463 transitions. [2023-08-26 07:50:24,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5990990990990991 [2023-08-26 07:50:24,869 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1463 transitions. [2023-08-26 07:50:24,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1463 transitions. [2023-08-26 07:50:24,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:50:24,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1463 transitions. [2023-08-26 07:50:24,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 243.83333333333334) internal successors, (1463), 6 states have internal predecessors, (1463), 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 07:50:24,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 407.0) internal successors, (2849), 7 states have internal predecessors, (2849), 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 07:50:24,877 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 407.0) internal successors, (2849), 7 states have internal predecessors, (2849), 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 07:50:24,877 INFO L175 Difference]: Start difference. First operand has 122 places, 117 transitions, 277 flow. Second operand 6 states and 1463 transitions. [2023-08-26 07:50:24,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 512 transitions, 2159 flow [2023-08-26 07:50:24,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 512 transitions, 2159 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 07:50:24,894 INFO L231 Difference]: Finished difference. Result has 132 places, 221 transitions, 995 flow [2023-08-26 07:50:24,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=995, PETRI_PLACES=132, PETRI_TRANSITIONS=221} [2023-08-26 07:50:24,895 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, 9 predicate places. [2023-08-26 07:50:24,895 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 221 transitions, 995 flow [2023-08-26 07:50:24,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 163.16666666666666) internal successors, (979), 6 states have internal predecessors, (979), 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 07:50:24,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:50:24,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:50:24,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 07:50:24,896 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONASSERT === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-26 07:50:24,896 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:50:24,896 INFO L85 PathProgramCache]: Analyzing trace with hash -341511962, now seen corresponding path program 1 times [2023-08-26 07:50:24,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:50:24,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158869742] [2023-08-26 07:50:24,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:50:24,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:50:24,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:50:24,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:50:24,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:50:24,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158869742] [2023-08-26 07:50:24,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158869742] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:50:24,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504722040] [2023-08-26 07:50:24,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:50:24,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:50:24,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:50:24,928 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 07:50:24,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-26 07:50:25,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:50:25,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 07:50:25,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:50:25,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:50:25,039 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 07:50:25,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:50:25,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504722040] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 07:50:25,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 07:50:25,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-26 07:50:25,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493728220] [2023-08-26 07:50:25,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 07:50:25,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 07:50:25,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:50:25,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 07:50:25,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 07:50:25,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 407 [2023-08-26 07:50:25,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 221 transitions, 995 flow. Second operand has 7 states, 7 states have (on average 228.57142857142858) internal successors, (1600), 7 states have internal predecessors, (1600), 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 07:50:25,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:50:25,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 407 [2023-08-26 07:50:25,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:50:25,834 INFO L124 PetriNetUnfolderBase]: 3799/9584 cut-off events. [2023-08-26 07:50:25,834 INFO L125 PetriNetUnfolderBase]: For 6253/6525 co-relation queries the response was YES. [2023-08-26 07:50:25,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23432 conditions, 9584 events. 3799/9584 cut-off events. For 6253/6525 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 83685 event pairs, 1465 based on Foata normal form. 714/9956 useless extension candidates. Maximal degree in co-relation 23420. Up to 3697 conditions per place. [2023-08-26 07:50:25,884 INFO L140 encePairwiseOnDemand]: 404/407 looper letters, 156 selfloop transitions, 3 changer transitions 0/265 dead transitions. [2023-08-26 07:50:25,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 265 transitions, 1503 flow [2023-08-26 07:50:25,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 07:50:25,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 07:50:25,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1215 transitions. [2023-08-26 07:50:25,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.597051597051597 [2023-08-26 07:50:25,887 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1215 transitions. [2023-08-26 07:50:25,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1215 transitions. [2023-08-26 07:50:25,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:50:25,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1215 transitions. [2023-08-26 07:50:25,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 243.0) internal successors, (1215), 5 states have internal predecessors, (1215), 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 07:50:25,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 407.0) internal successors, (2442), 6 states have internal predecessors, (2442), 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 07:50:25,893 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 407.0) internal successors, (2442), 6 states have internal predecessors, (2442), 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 07:50:25,893 INFO L175 Difference]: Start difference. First operand has 132 places, 221 transitions, 995 flow. Second operand 5 states and 1215 transitions. [2023-08-26 07:50:25,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 265 transitions, 1503 flow [2023-08-26 07:50:25,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 265 transitions, 1501 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-26 07:50:25,901 INFO L231 Difference]: Finished difference. Result has 110 places, 180 transitions, 840 flow [2023-08-26 07:50:25,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=834, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=840, PETRI_PLACES=110, PETRI_TRANSITIONS=180} [2023-08-26 07:50:25,902 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, -13 predicate places. [2023-08-26 07:50:25,902 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 180 transitions, 840 flow [2023-08-26 07:50:25,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 228.57142857142858) internal successors, (1600), 7 states have internal predecessors, (1600), 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 07:50:25,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:50:25,903 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 07:50:25,914 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-26 07:50:26,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-26 07:50:26,109 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-26 07:50:26,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:50:26,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1458741593, now seen corresponding path program 1 times [2023-08-26 07:50:26,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:50:26,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134405597] [2023-08-26 07:50:26,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:50:26,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:50:26,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:50:26,441 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 07:50:26,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:50:26,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134405597] [2023-08-26 07:50:26,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134405597] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:50:26,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:50:26,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 07:50:26,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958165920] [2023-08-26 07:50:26,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:50:26,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 07:50:26,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:50:26,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 07:50:26,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 07:50:26,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 407 [2023-08-26 07:50:26,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 180 transitions, 840 flow. Second operand has 6 states, 6 states have (on average 162.16666666666666) internal successors, (973), 6 states have internal predecessors, (973), 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 07:50:26,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:50:26,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 407 [2023-08-26 07:50:26,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:50:28,261 INFO L124 PetriNetUnfolderBase]: 12684/21181 cut-off events. [2023-08-26 07:50:28,261 INFO L125 PetriNetUnfolderBase]: For 16108/16108 co-relation queries the response was YES. [2023-08-26 07:50:28,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62062 conditions, 21181 events. 12684/21181 cut-off events. For 16108/16108 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 142846 event pairs, 7720 based on Foata normal form. 159/21324 useless extension candidates. Maximal degree in co-relation 62049. Up to 17320 conditions per place. [2023-08-26 07:50:28,391 INFO L140 encePairwiseOnDemand]: 380/407 looper letters, 285 selfloop transitions, 86 changer transitions 0/379 dead transitions. [2023-08-26 07:50:28,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 379 transitions, 2370 flow [2023-08-26 07:50:28,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 07:50:28,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 07:50:28,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1204 transitions. [2023-08-26 07:50:28,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49303849303849306 [2023-08-26 07:50:28,394 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1204 transitions. [2023-08-26 07:50:28,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1204 transitions. [2023-08-26 07:50:28,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:50:28,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1204 transitions. [2023-08-26 07:50:28,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 200.66666666666666) internal successors, (1204), 6 states have internal predecessors, (1204), 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 07:50:28,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 407.0) internal successors, (2849), 7 states have internal predecessors, (2849), 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 07:50:28,401 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 407.0) internal successors, (2849), 7 states have internal predecessors, (2849), 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 07:50:28,401 INFO L175 Difference]: Start difference. First operand has 110 places, 180 transitions, 840 flow. Second operand 6 states and 1204 transitions. [2023-08-26 07:50:28,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 379 transitions, 2370 flow [2023-08-26 07:50:28,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 379 transitions, 2347 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-08-26 07:50:28,416 INFO L231 Difference]: Finished difference. Result has 117 places, 271 transitions, 1705 flow [2023-08-26 07:50:28,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=833, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1705, PETRI_PLACES=117, PETRI_TRANSITIONS=271} [2023-08-26 07:50:28,417 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, -6 predicate places. [2023-08-26 07:50:28,417 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 271 transitions, 1705 flow [2023-08-26 07:50:28,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 162.16666666666666) internal successors, (973), 6 states have internal predecessors, (973), 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 07:50:28,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:50:28,418 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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 07:50:28,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-26 07:50:28,418 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-26 07:50:28,418 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:50:28,418 INFO L85 PathProgramCache]: Analyzing trace with hash 136523131, now seen corresponding path program 1 times [2023-08-26 07:50:28,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:50:28,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452136570] [2023-08-26 07:50:28,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:50:28,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:50:28,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:50:28,604 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 07:50:28,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:50:28,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452136570] [2023-08-26 07:50:28,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452136570] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:50:28,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:50:28,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 07:50:28,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395042174] [2023-08-26 07:50:28,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:50:28,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 07:50:28,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:50:28,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 07:50:28,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 07:50:28,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 407 [2023-08-26 07:50:28,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 271 transitions, 1705 flow. Second operand has 6 states, 6 states have (on average 162.33333333333334) internal successors, (974), 6 states have internal predecessors, (974), 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 07:50:28,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:50:28,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 407 [2023-08-26 07:50:28,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:50:31,040 INFO L124 PetriNetUnfolderBase]: 13729/22934 cut-off events. [2023-08-26 07:50:31,041 INFO L125 PetriNetUnfolderBase]: For 24093/24093 co-relation queries the response was YES. [2023-08-26 07:50:31,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73285 conditions, 22934 events. 13729/22934 cut-off events. For 24093/24093 co-relation queries the response was YES. Maximal size of possible extension queue 587. Compared 158082 event pairs, 8380 based on Foata normal form. 174/23092 useless extension candidates. Maximal degree in co-relation 73269. Up to 19789 conditions per place. [2023-08-26 07:50:31,217 INFO L140 encePairwiseOnDemand]: 381/407 looper letters, 373 selfloop transitions, 88 changer transitions 0/469 dead transitions. [2023-08-26 07:50:31,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 469 transitions, 3531 flow [2023-08-26 07:50:31,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 07:50:31,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 07:50:31,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1204 transitions. [2023-08-26 07:50:31,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49303849303849306 [2023-08-26 07:50:31,221 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1204 transitions. [2023-08-26 07:50:31,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1204 transitions. [2023-08-26 07:50:31,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:50:31,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1204 transitions. [2023-08-26 07:50:31,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 200.66666666666666) internal successors, (1204), 6 states have internal predecessors, (1204), 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 07:50:31,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 407.0) internal successors, (2849), 7 states have internal predecessors, (2849), 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 07:50:31,228 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 407.0) internal successors, (2849), 7 states have internal predecessors, (2849), 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 07:50:31,228 INFO L175 Difference]: Start difference. First operand has 117 places, 271 transitions, 1705 flow. Second operand 6 states and 1204 transitions. [2023-08-26 07:50:31,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 469 transitions, 3531 flow [2023-08-26 07:50:31,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 469 transitions, 3515 flow, removed 8 selfloop flow, removed 0 redundant places. [2023-08-26 07:50:31,290 INFO L231 Difference]: Finished difference. Result has 126 places, 354 transitions, 2586 flow [2023-08-26 07:50:31,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=1689, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2586, PETRI_PLACES=126, PETRI_TRANSITIONS=354} [2023-08-26 07:50:31,290 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, 3 predicate places. [2023-08-26 07:50:31,290 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 354 transitions, 2586 flow [2023-08-26 07:50:31,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 162.33333333333334) internal successors, (974), 6 states have internal predecessors, (974), 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 07:50:31,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:50:31,291 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 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 07:50:31,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-26 07:50:31,291 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-26 07:50:31,292 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:50:31,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1790233361, now seen corresponding path program 1 times [2023-08-26 07:50:31,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:50:31,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441242740] [2023-08-26 07:50:31,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:50:31,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:50:31,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:50:31,427 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 07:50:31,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:50:31,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441242740] [2023-08-26 07:50:31,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441242740] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:50:31,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160245573] [2023-08-26 07:50:31,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:50:31,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:50:31,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:50:31,429 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 07:50:31,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-26 07:50:31,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:50:31,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-26 07:50:31,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:50:31,602 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-26 07:50:31,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:50:31,651 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-26 07:50:31,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 07:50:31,674 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 07:50:31,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160245573] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:50:31,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 07:50:31,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2023-08-26 07:50:31,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883317551] [2023-08-26 07:50:31,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:50:31,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 07:50:31,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:50:31,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 07:50:31,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-08-26 07:50:31,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 407 [2023-08-26 07:50:31,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 354 transitions, 2586 flow. Second operand has 5 states, 5 states have (on average 210.2) internal successors, (1051), 5 states have internal predecessors, (1051), 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 07:50:31,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:50:31,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 407 [2023-08-26 07:50:31,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:50:32,038 INFO L124 PetriNetUnfolderBase]: 876/2545 cut-off events. [2023-08-26 07:50:32,038 INFO L125 PetriNetUnfolderBase]: For 2334/2334 co-relation queries the response was YES. [2023-08-26 07:50:32,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7282 conditions, 2545 events. 876/2545 cut-off events. For 2334/2334 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 15926 event pairs, 273 based on Foata normal form. 108/2652 useless extension candidates. Maximal degree in co-relation 7261. Up to 1038 conditions per place. [2023-08-26 07:50:32,051 INFO L140 encePairwiseOnDemand]: 398/407 looper letters, 45 selfloop transitions, 9 changer transitions 0/96 dead transitions. [2023-08-26 07:50:32,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 96 transitions, 556 flow [2023-08-26 07:50:32,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 07:50:32,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 07:50:32,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 882 transitions. [2023-08-26 07:50:32,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5417690417690417 [2023-08-26 07:50:32,054 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 882 transitions. [2023-08-26 07:50:32,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 882 transitions. [2023-08-26 07:50:32,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:50:32,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 882 transitions. [2023-08-26 07:50:32,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 220.5) internal successors, (882), 4 states have internal predecessors, (882), 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 07:50:32,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 407.0) internal successors, (2035), 5 states have internal predecessors, (2035), 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 07:50:32,059 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 407.0) internal successors, (2035), 5 states have internal predecessors, (2035), 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 07:50:32,059 INFO L175 Difference]: Start difference. First operand has 126 places, 354 transitions, 2586 flow. Second operand 4 states and 882 transitions. [2023-08-26 07:50:32,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 96 transitions, 556 flow [2023-08-26 07:50:32,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 96 transitions, 338 flow, removed 50 selfloop flow, removed 29 redundant places. [2023-08-26 07:50:32,075 INFO L231 Difference]: Finished difference. Result has 94 places, 82 transitions, 207 flow [2023-08-26 07:50:32,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=207, PETRI_PLACES=94, PETRI_TRANSITIONS=82} [2023-08-26 07:50:32,075 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, -29 predicate places. [2023-08-26 07:50:32,076 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 82 transitions, 207 flow [2023-08-26 07:50:32,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 210.2) internal successors, (1051), 5 states have internal predecessors, (1051), 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 07:50:32,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:50:32,076 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:50:32,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-26 07:50:32,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:50:32,282 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-26 07:50:32,283 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:50:32,283 INFO L85 PathProgramCache]: Analyzing trace with hash 50858081, now seen corresponding path program 1 times [2023-08-26 07:50:32,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:50:32,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610682562] [2023-08-26 07:50:32,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:50:32,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:50:32,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:50:32,568 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 07:50:32,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:50:32,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610682562] [2023-08-26 07:50:32,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610682562] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:50:32,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:50:32,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 07:50:32,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349813091] [2023-08-26 07:50:32,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:50:32,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 07:50:32,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:50:32,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 07:50:32,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 07:50:32,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 407 [2023-08-26 07:50:32,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 82 transitions, 207 flow. Second operand has 6 states, 6 states have (on average 164.5) internal successors, (987), 6 states have internal predecessors, (987), 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 07:50:32,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:50:32,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 407 [2023-08-26 07:50:32,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:50:32,999 INFO L124 PetriNetUnfolderBase]: 1953/3712 cut-off events. [2023-08-26 07:50:32,999 INFO L125 PetriNetUnfolderBase]: For 840/840 co-relation queries the response was YES. [2023-08-26 07:50:33,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8214 conditions, 3712 events. 1953/3712 cut-off events. For 840/840 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 18931 event pairs, 1687 based on Foata normal form. 0/3681 useless extension candidates. Maximal degree in co-relation 8207. Up to 3169 conditions per place. [2023-08-26 07:50:33,007 INFO L140 encePairwiseOnDemand]: 401/407 looper letters, 92 selfloop transitions, 5 changer transitions 13/117 dead transitions. [2023-08-26 07:50:33,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 117 transitions, 539 flow [2023-08-26 07:50:33,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 07:50:33,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 07:50:33,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1057 transitions. [2023-08-26 07:50:33,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43284193284193284 [2023-08-26 07:50:33,010 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1057 transitions. [2023-08-26 07:50:33,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1057 transitions. [2023-08-26 07:50:33,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:50:33,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1057 transitions. [2023-08-26 07:50:33,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 176.16666666666666) internal successors, (1057), 6 states have internal predecessors, (1057), 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 07:50:33,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 407.0) internal successors, (2849), 7 states have internal predecessors, (2849), 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 07:50:33,015 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 407.0) internal successors, (2849), 7 states have internal predecessors, (2849), 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 07:50:33,016 INFO L175 Difference]: Start difference. First operand has 94 places, 82 transitions, 207 flow. Second operand 6 states and 1057 transitions. [2023-08-26 07:50:33,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 117 transitions, 539 flow [2023-08-26 07:50:33,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 117 transitions, 530 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:50:33,018 INFO L231 Difference]: Finished difference. Result has 96 places, 76 transitions, 195 flow [2023-08-26 07:50:33,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=195, PETRI_PLACES=96, PETRI_TRANSITIONS=76} [2023-08-26 07:50:33,019 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, -27 predicate places. [2023-08-26 07:50:33,019 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 76 transitions, 195 flow [2023-08-26 07:50:33,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 164.5) internal successors, (987), 6 states have internal predecessors, (987), 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 07:50:33,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:50:33,019 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:50:33,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-26 07:50:33,020 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-26 07:50:33,020 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:50:33,020 INFO L85 PathProgramCache]: Analyzing trace with hash 700490489, now seen corresponding path program 1 times [2023-08-26 07:50:33,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:50:33,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460517759] [2023-08-26 07:50:33,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:50:33,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:50:33,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:50:33,251 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 07:50:33,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:50:33,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460517759] [2023-08-26 07:50:33,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460517759] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:50:33,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:50:33,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 07:50:33,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187259402] [2023-08-26 07:50:33,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:50:33,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 07:50:33,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:50:33,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 07:50:33,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 07:50:33,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 407 [2023-08-26 07:50:33,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 76 transitions, 195 flow. Second operand has 6 states, 6 states have (on average 164.5) internal successors, (987), 6 states have internal predecessors, (987), 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 07:50:33,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:50:33,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 407 [2023-08-26 07:50:33,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:50:33,503 INFO L124 PetriNetUnfolderBase]: 1468/2777 cut-off events. [2023-08-26 07:50:33,503 INFO L125 PetriNetUnfolderBase]: For 683/683 co-relation queries the response was YES. [2023-08-26 07:50:33,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6265 conditions, 2777 events. 1468/2777 cut-off events. For 683/683 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 13482 event pairs, 1275 based on Foata normal form. 24/2797 useless extension candidates. Maximal degree in co-relation 6258. Up to 2415 conditions per place. [2023-08-26 07:50:33,509 INFO L140 encePairwiseOnDemand]: 402/407 looper letters, 0 selfloop transitions, 0 changer transitions 103/103 dead transitions. [2023-08-26 07:50:33,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 103 transitions, 457 flow [2023-08-26 07:50:33,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 07:50:33,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 07:50:33,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1048 transitions. [2023-08-26 07:50:33,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42915642915642915 [2023-08-26 07:50:33,513 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1048 transitions. [2023-08-26 07:50:33,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1048 transitions. [2023-08-26 07:50:33,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:50:33,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1048 transitions. [2023-08-26 07:50:33,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 174.66666666666666) internal successors, (1048), 6 states have internal predecessors, (1048), 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 07:50:33,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 407.0) internal successors, (2849), 7 states have internal predecessors, (2849), 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 07:50:33,518 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 407.0) internal successors, (2849), 7 states have internal predecessors, (2849), 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 07:50:33,519 INFO L175 Difference]: Start difference. First operand has 96 places, 76 transitions, 195 flow. Second operand 6 states and 1048 transitions. [2023-08-26 07:50:33,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 103 transitions, 457 flow [2023-08-26 07:50:33,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 103 transitions, 447 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-26 07:50:33,521 INFO L231 Difference]: Finished difference. Result has 90 places, 0 transitions, 0 flow [2023-08-26 07:50:33,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=90, PETRI_TRANSITIONS=0} [2023-08-26 07:50:33,521 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, -33 predicate places. [2023-08-26 07:50:33,521 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 0 transitions, 0 flow [2023-08-26 07:50:33,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 164.5) internal successors, (987), 6 states have internal predecessors, (987), 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 07:50:33,522 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (23 of 24 remaining) [2023-08-26 07:50:33,522 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (22 of 24 remaining) [2023-08-26 07:50:33,522 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (21 of 24 remaining) [2023-08-26 07:50:33,522 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (20 of 24 remaining) [2023-08-26 07:50:33,522 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (19 of 24 remaining) [2023-08-26 07:50:33,522 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (18 of 24 remaining) [2023-08-26 07:50:33,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (17 of 24 remaining) [2023-08-26 07:50:33,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (16 of 24 remaining) [2023-08-26 07:50:33,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (15 of 24 remaining) [2023-08-26 07:50:33,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (14 of 24 remaining) [2023-08-26 07:50:33,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 24 remaining) [2023-08-26 07:50:33,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 24 remaining) [2023-08-26 07:50:33,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 24 remaining) [2023-08-26 07:50:33,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (10 of 24 remaining) [2023-08-26 07:50:33,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (9 of 24 remaining) [2023-08-26 07:50:33,524 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 24 remaining) [2023-08-26 07:50:33,524 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (7 of 24 remaining) [2023-08-26 07:50:33,524 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (6 of 24 remaining) [2023-08-26 07:50:33,524 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONASSERT (5 of 24 remaining) [2023-08-26 07:50:33,524 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (4 of 24 remaining) [2023-08-26 07:50:33,524 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (3 of 24 remaining) [2023-08-26 07:50:33,524 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 24 remaining) [2023-08-26 07:50:33,524 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 24 remaining) [2023-08-26 07:50:33,524 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (0 of 24 remaining) [2023-08-26 07:50:33,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-26 07:50:33,525 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:50:33,525 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-26 07:50:33,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 242 places, 257 transitions, 532 flow [2023-08-26 07:50:33,561 INFO L124 PetriNetUnfolderBase]: 34/408 cut-off events. [2023-08-26 07:50:33,561 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 07:50:33,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 422 conditions, 408 events. 34/408 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1633 event pairs, 0 based on Foata normal form. 0/341 useless extension candidates. Maximal degree in co-relation 248. Up to 8 conditions per place. [2023-08-26 07:50:33,564 INFO L82 GeneralOperation]: Start removeDead. Operand has 242 places, 257 transitions, 532 flow [2023-08-26 07:50:33,566 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 241 places, 256 transitions, 530 flow [2023-08-26 07:50:33,566 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 07:50:33,566 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 241 places, 256 transitions, 530 flow [2023-08-26 07:50:33,567 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 241 places, 256 transitions, 530 flow [2023-08-26 07:50:33,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 241 places, 256 transitions, 530 flow [2023-08-26 07:50:33,598 INFO L124 PetriNetUnfolderBase]: 34/407 cut-off events. [2023-08-26 07:50:33,598 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 07:50:33,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 421 conditions, 407 events. 34/407 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1633 event pairs, 0 based on Foata normal form. 0/341 useless extension candidates. Maximal degree in co-relation 247. Up to 8 conditions per place. [2023-08-26 07:50:33,611 INFO L119 LiptonReduction]: Number of co-enabled transitions 29256 [2023-08-26 07:50:36,672 INFO L134 LiptonReduction]: Checked pairs total: 152643 [2023-08-26 07:50:36,672 INFO L136 LiptonReduction]: Total number of compositions: 145 [2023-08-26 07:50:36,673 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 07:50:36,674 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3f9946c8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 07:50:36,674 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 07:50:36,678 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 07:50:36,678 INFO L124 PetriNetUnfolderBase]: 5/68 cut-off events. [2023-08-26 07:50:36,678 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 07:50:36,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:50:36,678 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-26 07:50:36,678 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 07:50:36,678 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:50:36,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1971508040, now seen corresponding path program 1 times [2023-08-26 07:50:36,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:50:36,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971253403] [2023-08-26 07:50:36,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:50:36,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:50:36,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 07:50:36,690 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 07:50:36,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 07:50:36,700 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 07:50:36,700 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 07:50:36,700 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 07:50:36,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-26 07:50:36,701 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 07:50:36,701 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-26 07:50:36,701 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 07:50:36,701 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-26 07:50:36,728 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-26 07:50:36,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 308 places, 328 transitions, 686 flow [2023-08-26 07:50:36,796 INFO L124 PetriNetUnfolderBase]: 54/615 cut-off events. [2023-08-26 07:50:36,797 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 07:50:36,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 643 conditions, 615 events. 54/615 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2755 event pairs, 1 based on Foata normal form. 0/514 useless extension candidates. Maximal degree in co-relation 416. Up to 16 conditions per place. [2023-08-26 07:50:36,804 INFO L82 GeneralOperation]: Start removeDead. Operand has 308 places, 328 transitions, 686 flow [2023-08-26 07:50:36,808 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 308 places, 328 transitions, 686 flow [2023-08-26 07:50:36,809 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 07:50:36,809 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 308 places, 328 transitions, 686 flow [2023-08-26 07:50:36,809 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 308 places, 328 transitions, 686 flow [2023-08-26 07:50:36,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 308 places, 328 transitions, 686 flow [2023-08-26 07:50:36,877 INFO L124 PetriNetUnfolderBase]: 54/615 cut-off events. [2023-08-26 07:50:36,878 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 07:50:36,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 643 conditions, 615 events. 54/615 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2755 event pairs, 1 based on Foata normal form. 0/514 useless extension candidates. Maximal degree in co-relation 416. Up to 16 conditions per place. [2023-08-26 07:50:36,907 INFO L119 LiptonReduction]: Number of co-enabled transitions 58788 [2023-08-26 07:50:39,937 INFO L134 LiptonReduction]: Checked pairs total: 326324 [2023-08-26 07:50:39,938 INFO L136 LiptonReduction]: Total number of compositions: 174 [2023-08-26 07:50:39,939 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 07:50:39,939 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;@3f9946c8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 07:50:39,939 INFO L358 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2023-08-26 07:50:39,940 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 07:50:39,940 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-08-26 07:50:39,940 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:50:39,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:50:39,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 07:50:39,940 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-26 07:50:39,941 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:50:39,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1969, now seen corresponding path program 1 times [2023-08-26 07:50:39,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:50:39,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554671050] [2023-08-26 07:50:39,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:50:39,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:50:39,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:50:39,945 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 07:50:39,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:50:39,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554671050] [2023-08-26 07:50:39,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554671050] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:50:39,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:50:39,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 07:50:39,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366163030] [2023-08-26 07:50:39,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:50:39,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 07:50:39,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:50:39,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 07:50:39,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 07:50:39,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 297 out of 502 [2023-08-26 07:50:39,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 184 transitions, 398 flow. Second operand has 2 states, 2 states have (on average 297.5) internal successors, (595), 2 states have internal predecessors, (595), 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 07:50:39,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:50:39,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 297 of 502 [2023-08-26 07:50:39,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:51:04,079 INFO L124 PetriNetUnfolderBase]: 156878/304390 cut-off events. [2023-08-26 07:51:04,079 INFO L125 PetriNetUnfolderBase]: For 3029/3029 co-relation queries the response was YES. [2023-08-26 07:51:04,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 522603 conditions, 304390 events. 156878/304390 cut-off events. For 3029/3029 co-relation queries the response was YES. Maximal size of possible extension queue 5181. Compared 3616431 event pairs, 156571 based on Foata normal form. 34357/307747 useless extension candidates. Maximal degree in co-relation 187328. Up to 216124 conditions per place. [2023-08-26 07:51:06,075 INFO L140 encePairwiseOnDemand]: 480/502 looper letters, 65 selfloop transitions, 0 changer transitions 0/162 dead transitions. [2023-08-26 07:51:06,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 162 transitions, 484 flow [2023-08-26 07:51:06,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 07:51:06,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 07:51:06,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 681 transitions. [2023-08-26 07:51:06,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6782868525896414 [2023-08-26 07:51:06,087 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 681 transitions. [2023-08-26 07:51:06,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 681 transitions. [2023-08-26 07:51:06,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:51:06,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 681 transitions. [2023-08-26 07:51:06,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 340.5) internal successors, (681), 2 states have internal predecessors, (681), 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 07:51:06,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 502.0) internal successors, (1506), 3 states have internal predecessors, (1506), 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 07:51:06,090 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 502.0) internal successors, (1506), 3 states have internal predecessors, (1506), 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 07:51:06,090 INFO L175 Difference]: Start difference. First operand has 167 places, 184 transitions, 398 flow. Second operand 2 states and 681 transitions. [2023-08-26 07:51:06,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 162 transitions, 484 flow [2023-08-26 07:51:06,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 162 transitions, 484 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 07:51:06,095 INFO L231 Difference]: Finished difference. Result has 167 places, 162 transitions, 354 flow [2023-08-26 07:51:06,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=502, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=354, PETRI_PLACES=167, PETRI_TRANSITIONS=162} [2023-08-26 07:51:06,096 INFO L281 CegarLoopForPetriNet]: 167 programPoint places, 0 predicate places. [2023-08-26 07:51:06,096 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 162 transitions, 354 flow [2023-08-26 07:51:06,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 297.5) internal successors, (595), 2 states have internal predecessors, (595), 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 07:51:06,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:51:06,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 07:51:06,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-26 07:51:06,097 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-26 07:51:06,097 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:51:06,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1951796, now seen corresponding path program 1 times [2023-08-26 07:51:06,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:51:06,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103290744] [2023-08-26 07:51:06,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:51:06,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:51:06,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:51:06,113 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 07:51:06,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:51:06,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103290744] [2023-08-26 07:51:06,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103290744] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:51:06,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:51:06,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:51:06,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427497115] [2023-08-26 07:51:06,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:51:06,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:51:06,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:51:06,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:51:06,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:51:06,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 289 out of 502 [2023-08-26 07:51:06,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 162 transitions, 354 flow. Second operand has 3 states, 3 states have (on average 289.6666666666667) internal successors, (869), 3 states have internal predecessors, (869), 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 07:51:06,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:51:06,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 289 of 502 [2023-08-26 07:51:06,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:51:28,169 INFO L124 PetriNetUnfolderBase]: 156877/304450 cut-off events. [2023-08-26 07:51:28,170 INFO L125 PetriNetUnfolderBase]: For 3015/3015 co-relation queries the response was YES. [2023-08-26 07:51:28,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 522656 conditions, 304450 events. 156877/304450 cut-off events. For 3015/3015 co-relation queries the response was YES. Maximal size of possible extension queue 5192. Compared 3619275 event pairs, 142044 based on Foata normal form. 0/273227 useless extension candidates. Maximal degree in co-relation 522650. Up to 216098 conditions per place. [2023-08-26 07:51:30,173 INFO L140 encePairwiseOnDemand]: 499/502 looper letters, 80 selfloop transitions, 2 changer transitions 0/179 dead transitions. [2023-08-26 07:51:30,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 179 transitions, 552 flow [2023-08-26 07:51:30,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:51:30,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:51:30,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 950 transitions. [2023-08-26 07:51:30,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6308100929614874 [2023-08-26 07:51:30,175 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 950 transitions. [2023-08-26 07:51:30,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 950 transitions. [2023-08-26 07:51:30,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:51:30,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 950 transitions. [2023-08-26 07:51:30,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 316.6666666666667) internal successors, (950), 3 states have internal predecessors, (950), 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 07:51:30,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 502.0) internal successors, (2008), 4 states have internal predecessors, (2008), 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 07:51:30,179 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 502.0) internal successors, (2008), 4 states have internal predecessors, (2008), 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 07:51:30,179 INFO L175 Difference]: Start difference. First operand has 167 places, 162 transitions, 354 flow. Second operand 3 states and 950 transitions. [2023-08-26 07:51:30,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 179 transitions, 552 flow [2023-08-26 07:51:30,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 179 transitions, 552 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 07:51:30,185 INFO L231 Difference]: Finished difference. Result has 170 places, 163 transitions, 366 flow [2023-08-26 07:51:30,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=502, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=366, PETRI_PLACES=170, PETRI_TRANSITIONS=163} [2023-08-26 07:51:30,185 INFO L281 CegarLoopForPetriNet]: 167 programPoint places, 3 predicate places. [2023-08-26 07:51:30,186 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 163 transitions, 366 flow [2023-08-26 07:51:30,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 289.6666666666667) internal successors, (869), 3 states have internal predecessors, (869), 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 07:51:30,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:51:30,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 07:51:30,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-26 07:51:30,186 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-26 07:51:30,187 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:51:30,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1875634776, now seen corresponding path program 1 times [2023-08-26 07:51:30,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:51:30,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183557679] [2023-08-26 07:51:30,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:51:30,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:51:30,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:51:30,207 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 07:51:30,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:51:30,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183557679] [2023-08-26 07:51:30,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183557679] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:51:30,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:51:30,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:51:30,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438253730] [2023-08-26 07:51:30,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:51:30,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:51:30,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:51:30,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:51:30,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:51:30,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 502 [2023-08-26 07:51:30,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 163 transitions, 366 flow. Second operand has 3 states, 3 states have (on average 271.6666666666667) internal successors, (815), 3 states have internal predecessors, (815), 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 07:51:30,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:51:30,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 502 [2023-08-26 07:51:30,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand