./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-data-race.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_79-equ_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_79-equ_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5ac72ff2379990464c5f55660be1e08b12557a61aceeef8401296ef66be035fc --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 17:09:51,874 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 17:09:51,978 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-14 17:09:51,983 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 17:09:51,984 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 17:09:52,012 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 17:09:52,013 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 17:09:52,014 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 17:09:52,015 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 17:09:52,018 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 17:09:52,018 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 17:09:52,019 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 17:09:52,019 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 17:09:52,019 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 17:09:52,019 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 17:09:52,020 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 17:09:52,020 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 17:09:52,020 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 17:09:52,020 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 17:09:52,021 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 17:09:52,022 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 17:09:52,022 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 17:09:52,022 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-14 17:09:52,023 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 17:09:52,023 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 17:09:52,023 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 17:09:52,023 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 17:09:52,024 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 17:09:52,024 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 17:09:52,025 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 17:09:52,025 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 17:09:52,026 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 17:09:52,026 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 17:09:52,026 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 17:09:52,027 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 17:09:52,027 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 17:09:52,027 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 17:09:52,027 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 17:09:52,027 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 17:09:52,027 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 17:09:52,028 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 17:09:52,028 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ac72ff2379990464c5f55660be1e08b12557a61aceeef8401296ef66be035fc [2024-10-14 17:09:52,272 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 17:09:52,299 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 17:09:52,302 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 17:09:52,303 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 17:09:52,303 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 17:09:52,304 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_79-equ_racefree.i [2024-10-14 17:09:53,695 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 17:09:53,963 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 17:09:53,963 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_79-equ_racefree.i [2024-10-14 17:09:53,982 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d918c754/8aa7062347bd439491b5e0634fe85375/FLAGfda645019 [2024-10-14 17:09:54,279 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d918c754/8aa7062347bd439491b5e0634fe85375 [2024-10-14 17:09:54,282 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 17:09:54,283 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 17:09:54,287 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 17:09:54,289 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 17:09:54,295 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 17:09:54,296 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:09:54" (1/1) ... [2024-10-14 17:09:54,299 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e62b03d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:09:54, skipping insertion in model container [2024-10-14 17:09:54,299 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:09:54" (1/1) ... [2024-10-14 17:09:54,347 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 17:09:54,784 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 17:09:54,800 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 17:09:54,856 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 17:09:54,904 INFO L204 MainTranslator]: Completed translation [2024-10-14 17:09:54,904 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:09:54 WrapperNode [2024-10-14 17:09:54,904 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 17:09:54,905 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 17:09:54,906 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 17:09:54,906 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 17:09:54,912 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:09:54" (1/1) ... [2024-10-14 17:09:54,937 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:09:54" (1/1) ... [2024-10-14 17:09:54,984 INFO L138 Inliner]: procedures = 272, calls = 65, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 299 [2024-10-14 17:09:54,985 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 17:09:54,985 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 17:09:54,986 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 17:09:54,986 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 17:09:54,996 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:09:54" (1/1) ... [2024-10-14 17:09:54,997 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:09:54" (1/1) ... [2024-10-14 17:09:55,001 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:09:54" (1/1) ... [2024-10-14 17:09:55,002 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:09:54" (1/1) ... [2024-10-14 17:09:55,021 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:09:54" (1/1) ... [2024-10-14 17:09:55,028 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:09:54" (1/1) ... [2024-10-14 17:09:55,032 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:09:54" (1/1) ... [2024-10-14 17:09:55,034 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:09:54" (1/1) ... [2024-10-14 17:09:55,039 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 17:09:55,040 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 17:09:55,040 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 17:09:55,040 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 17:09:55,044 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:09:54" (1/1) ... [2024-10-14 17:09:55,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 17:09:55,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:09:55,079 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 17:09:55,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 17:09:55,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-14 17:09:55,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-14 17:09:55,140 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-14 17:09:55,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-14 17:09:55,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-14 17:09:55,141 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-14 17:09:55,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 17:09:55,142 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-14 17:09:55,142 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-14 17:09:55,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-14 17:09:55,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 17:09:55,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 17:09:55,144 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 17:09:55,290 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 17:09:55,292 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 17:09:55,722 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 17:09:55,722 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 17:09:55,771 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 17:09:55,774 INFO L314 CfgBuilder]: Removed 22 assume(true) statements. [2024-10-14 17:09:55,774 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:09:55 BoogieIcfgContainer [2024-10-14 17:09:55,775 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 17:09:55,777 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 17:09:55,778 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 17:09:55,781 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 17:09:55,782 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:09:54" (1/3) ... [2024-10-14 17:09:55,783 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@290d9855 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:09:55, skipping insertion in model container [2024-10-14 17:09:55,783 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:09:54" (2/3) ... [2024-10-14 17:09:55,783 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@290d9855 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:09:55, skipping insertion in model container [2024-10-14 17:09:55,783 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:09:55" (3/3) ... [2024-10-14 17:09:55,785 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_79-equ_racefree.i [2024-10-14 17:09:55,802 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 17:09:55,802 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-10-14 17:09:55,802 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 17:09:55,949 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-14 17:09:56,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 271 places, 299 transitions, 605 flow [2024-10-14 17:09:56,147 INFO L124 PetriNetUnfolderBase]: 46/428 cut-off events. [2024-10-14 17:09:56,147 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-14 17:09:56,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 433 conditions, 428 events. 46/428 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1728 event pairs, 0 based on Foata normal form. 0/360 useless extension candidates. Maximal degree in co-relation 232. Up to 8 conditions per place. [2024-10-14 17:09:56,161 INFO L82 GeneralOperation]: Start removeDead. Operand has 271 places, 299 transitions, 605 flow [2024-10-14 17:09:56,173 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 270 places, 297 transitions, 601 flow [2024-10-14 17:09:56,186 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 17:09:56,195 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@380bf406, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 17:09:56,197 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-10-14 17:09:56,220 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 17:09:56,220 INFO L124 PetriNetUnfolderBase]: 6/92 cut-off events. [2024-10-14 17:09:56,221 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 17:09:56,221 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:09:56,221 INFO L204 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, 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] [2024-10-14 17:09:56,222 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2024-10-14 17:09:56,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:09:56,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1730315664, now seen corresponding path program 1 times [2024-10-14 17:09:56,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:09:56,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563284758] [2024-10-14 17:09:56,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:09:56,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:09:56,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:09:57,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:09:57,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:09:57,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563284758] [2024-10-14 17:09:57,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563284758] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:09:57,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:09:57,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 17:09:57,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041479356] [2024-10-14 17:09:57,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:09:57,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 17:09:57,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:09:57,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 17:09:57,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-14 17:09:57,571 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 299 [2024-10-14 17:09:57,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 297 transitions, 601 flow. Second operand has 6 states, 6 states have (on average 196.5) internal successors, (1179), 6 states have internal predecessors, (1179), 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) [2024-10-14 17:09:57,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:09:57,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 299 [2024-10-14 17:09:57,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:09:58,725 INFO L124 PetriNetUnfolderBase]: 1365/5254 cut-off events. [2024-10-14 17:09:58,726 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-14 17:09:58,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8026 conditions, 5254 events. 1365/5254 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 46694 event pairs, 997 based on Foata normal form. 733/5522 useless extension candidates. Maximal degree in co-relation 7770. Up to 2548 conditions per place. [2024-10-14 17:09:58,761 INFO L140 encePairwiseOnDemand]: 246/299 looper letters, 107 selfloop transitions, 86 changer transitions 0/384 dead transitions. [2024-10-14 17:09:58,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 384 transitions, 1161 flow [2024-10-14 17:09:58,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 17:09:58,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 17:09:58,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1438 transitions. [2024-10-14 17:09:58,784 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8015607580824972 [2024-10-14 17:09:58,786 INFO L175 Difference]: Start difference. First operand has 270 places, 297 transitions, 601 flow. Second operand 6 states and 1438 transitions. [2024-10-14 17:09:58,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 384 transitions, 1161 flow [2024-10-14 17:09:58,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 384 transitions, 1161 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 17:09:58,802 INFO L231 Difference]: Finished difference. Result has 276 places, 352 transitions, 1107 flow [2024-10-14 17:09:58,805 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=541, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1107, PETRI_PLACES=276, PETRI_TRANSITIONS=352} [2024-10-14 17:09:58,809 INFO L277 CegarLoopForPetriNet]: 270 programPoint places, 6 predicate places. [2024-10-14 17:09:58,810 INFO L471 AbstractCegarLoop]: Abstraction has has 276 places, 352 transitions, 1107 flow [2024-10-14 17:09:58,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 196.5) internal successors, (1179), 6 states have internal predecessors, (1179), 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) [2024-10-14 17:09:58,811 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:09:58,812 INFO L204 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, 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] [2024-10-14 17:09:58,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 17:09:58,812 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2024-10-14 17:09:58,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:09:58,813 INFO L85 PathProgramCache]: Analyzing trace with hash 57065284, now seen corresponding path program 1 times [2024-10-14 17:09:58,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:09:58,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446925658] [2024-10-14 17:09:58,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:09:58,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:09:58,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:09:58,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:09:58,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:09:58,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446925658] [2024-10-14 17:09:58,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446925658] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:09:58,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:09:58,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 17:09:58,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120743013] [2024-10-14 17:09:58,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:09:58,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:09:58,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:09:58,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:09:58,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:09:58,898 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 299 [2024-10-14 17:09:58,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 352 transitions, 1107 flow. Second operand has 3 states, 3 states have (on average 249.0) internal successors, (747), 3 states have internal predecessors, (747), 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) [2024-10-14 17:09:58,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:09:58,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 299 [2024-10-14 17:09:58,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:09:59,269 INFO L124 PetriNetUnfolderBase]: 261/1913 cut-off events. [2024-10-14 17:09:59,269 INFO L125 PetriNetUnfolderBase]: For 149/165 co-relation queries the response was YES. [2024-10-14 17:09:59,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2800 conditions, 1913 events. 261/1913 cut-off events. For 149/165 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 14771 event pairs, 77 based on Foata normal form. 1/1764 useless extension candidates. Maximal degree in co-relation 2663. Up to 235 conditions per place. [2024-10-14 17:09:59,282 INFO L140 encePairwiseOnDemand]: 296/299 looper letters, 30 selfloop transitions, 3 changer transitions 0/360 dead transitions. [2024-10-14 17:09:59,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 360 transitions, 1189 flow [2024-10-14 17:09:59,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:09:59,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 17:09:59,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 774 transitions. [2024-10-14 17:09:59,285 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.862876254180602 [2024-10-14 17:09:59,285 INFO L175 Difference]: Start difference. First operand has 276 places, 352 transitions, 1107 flow. Second operand 3 states and 774 transitions. [2024-10-14 17:09:59,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 360 transitions, 1189 flow [2024-10-14 17:09:59,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 360 transitions, 1189 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 17:09:59,295 INFO L231 Difference]: Finished difference. Result has 279 places, 352 transitions, 1118 flow [2024-10-14 17:09:59,296 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=1107, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1118, PETRI_PLACES=279, PETRI_TRANSITIONS=352} [2024-10-14 17:09:59,297 INFO L277 CegarLoopForPetriNet]: 270 programPoint places, 9 predicate places. [2024-10-14 17:09:59,297 INFO L471 AbstractCegarLoop]: Abstraction has has 279 places, 352 transitions, 1118 flow [2024-10-14 17:09:59,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 249.0) internal successors, (747), 3 states have internal predecessors, (747), 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) [2024-10-14 17:09:59,297 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:09:59,298 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:09:59,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 17:09:59,298 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2024-10-14 17:09:59,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:09:59,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1491645423, now seen corresponding path program 1 times [2024-10-14 17:09:59,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:09:59,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875382145] [2024-10-14 17:09:59,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:09:59,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:09:59,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 17:09:59,329 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 17:09:59,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 17:09:59,383 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 17:09:59,384 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 17:09:59,384 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2024-10-14 17:09:59,387 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (16 of 18 remaining) [2024-10-14 17:09:59,387 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (15 of 18 remaining) [2024-10-14 17:09:59,387 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (14 of 18 remaining) [2024-10-14 17:09:59,387 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (13 of 18 remaining) [2024-10-14 17:09:59,388 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (12 of 18 remaining) [2024-10-14 17:09:59,388 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (11 of 18 remaining) [2024-10-14 17:09:59,388 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (10 of 18 remaining) [2024-10-14 17:09:59,389 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 18 remaining) [2024-10-14 17:09:59,389 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 18 remaining) [2024-10-14 17:09:59,389 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 18 remaining) [2024-10-14 17:09:59,390 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 18 remaining) [2024-10-14 17:09:59,390 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 18 remaining) [2024-10-14 17:09:59,390 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 18 remaining) [2024-10-14 17:09:59,391 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 18 remaining) [2024-10-14 17:09:59,391 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 18 remaining) [2024-10-14 17:09:59,391 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 18 remaining) [2024-10-14 17:09:59,392 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 18 remaining) [2024-10-14 17:09:59,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 17:09:59,392 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-10-14 17:09:59,395 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 17:09:59,397 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-14 17:09:59,447 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-14 17:09:59,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 361 places, 401 transitions, 818 flow [2024-10-14 17:09:59,566 INFO L124 PetriNetUnfolderBase]: 77/687 cut-off events. [2024-10-14 17:09:59,566 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-14 17:09:59,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 699 conditions, 687 events. 77/687 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3325 event pairs, 0 based on Foata normal form. 0/574 useless extension candidates. Maximal degree in co-relation 430. Up to 12 conditions per place. [2024-10-14 17:09:59,577 INFO L82 GeneralOperation]: Start removeDead. Operand has 361 places, 401 transitions, 818 flow [2024-10-14 17:09:59,585 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 360 places, 399 transitions, 814 flow [2024-10-14 17:09:59,585 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 17:09:59,586 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@380bf406, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 17:09:59,586 INFO L334 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2024-10-14 17:09:59,593 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 17:09:59,593 INFO L124 PetriNetUnfolderBase]: 6/92 cut-off events. [2024-10-14 17:09:59,593 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 17:09:59,593 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:09:59,593 INFO L204 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, 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] [2024-10-14 17:09:59,593 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-14 17:09:59,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:09:59,594 INFO L85 PathProgramCache]: Analyzing trace with hash 840518032, now seen corresponding path program 1 times [2024-10-14 17:09:59,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:09:59,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565739096] [2024-10-14 17:09:59,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:09:59,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:09:59,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:09:59,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:09:59,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:09:59,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565739096] [2024-10-14 17:09:59,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565739096] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:09:59,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:09:59,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 17:09:59,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676283647] [2024-10-14 17:09:59,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:09:59,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 17:09:59,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:09:59,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 17:09:59,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-14 17:10:00,320 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 401 [2024-10-14 17:10:00,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 399 transitions, 814 flow. Second operand has 6 states, 6 states have (on average 255.5) internal successors, (1533), 6 states have internal predecessors, (1533), 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) [2024-10-14 17:10:00,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:10:00,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 401 [2024-10-14 17:10:00,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:10:23,567 INFO L124 PetriNetUnfolderBase]: 83151/198020 cut-off events. [2024-10-14 17:10:23,567 INFO L125 PetriNetUnfolderBase]: For 1038/1038 co-relation queries the response was YES. [2024-10-14 17:10:24,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 323235 conditions, 198020 events. 83151/198020 cut-off events. For 1038/1038 co-relation queries the response was YES. Maximal size of possible extension queue 3616. Compared 2614815 event pairs, 59498 based on Foata normal form. 36322/221012 useless extension candidates. Maximal degree in co-relation 214679. Up to 117106 conditions per place. [2024-10-14 17:10:25,245 INFO L140 encePairwiseOnDemand]: 316/401 looper letters, 170 selfloop transitions, 166 changer transitions 0/585 dead transitions. [2024-10-14 17:10:25,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 585 transitions, 1863 flow [2024-10-14 17:10:25,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 17:10:25,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 17:10:25,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1995 transitions. [2024-10-14 17:10:25,252 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8291770573566085 [2024-10-14 17:10:25,252 INFO L175 Difference]: Start difference. First operand has 360 places, 399 transitions, 814 flow. Second operand 6 states and 1995 transitions. [2024-10-14 17:10:25,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 585 transitions, 1863 flow [2024-10-14 17:10:25,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 585 transitions, 1863 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 17:10:25,283 INFO L231 Difference]: Finished difference. Result has 364 places, 520 transitions, 1812 flow [2024-10-14 17:10:25,284 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=401, PETRI_DIFFERENCE_MINUEND_FLOW=726, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1812, PETRI_PLACES=364, PETRI_TRANSITIONS=520} [2024-10-14 17:10:25,285 INFO L277 CegarLoopForPetriNet]: 360 programPoint places, 4 predicate places. [2024-10-14 17:10:25,286 INFO L471 AbstractCegarLoop]: Abstraction has has 364 places, 520 transitions, 1812 flow [2024-10-14 17:10:25,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 255.5) internal successors, (1533), 6 states have internal predecessors, (1533), 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) [2024-10-14 17:10:25,288 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:10:25,288 INFO L204 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, 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] [2024-10-14 17:10:25,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 17:10:25,288 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-14 17:10:25,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:10:25,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1179713956, now seen corresponding path program 1 times [2024-10-14 17:10:25,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:10:25,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739925327] [2024-10-14 17:10:25,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:10:25,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:10:25,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:10:25,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:10:25,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:10:25,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739925327] [2024-10-14 17:10:25,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739925327] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:10:25,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:10:25,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 17:10:25,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339513787] [2024-10-14 17:10:25,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:10:25,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:10:25,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:10:25,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:10:25,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:10:25,386 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 401 [2024-10-14 17:10:25,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 520 transitions, 1812 flow. Second operand has 3 states, 3 states have (on average 328.0) internal successors, (984), 3 states have internal predecessors, (984), 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) [2024-10-14 17:10:25,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:10:25,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 401 [2024-10-14 17:10:25,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:10:34,909 INFO L124 PetriNetUnfolderBase]: 20518/79782 cut-off events. [2024-10-14 17:10:34,909 INFO L125 PetriNetUnfolderBase]: For 8296/8966 co-relation queries the response was YES. [2024-10-14 17:10:35,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129089 conditions, 79782 events. 20518/79782 cut-off events. For 8296/8966 co-relation queries the response was YES. Maximal size of possible extension queue 1651. Compared 1149650 event pairs, 10595 based on Foata normal form. 1/72121 useless extension candidates. Maximal degree in co-relation 55877. Up to 22784 conditions per place. [2024-10-14 17:10:35,651 INFO L140 encePairwiseOnDemand]: 398/401 looper letters, 42 selfloop transitions, 3 changer transitions 0/530 dead transitions. [2024-10-14 17:10:35,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 530 transitions, 1928 flow [2024-10-14 17:10:35,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:10:35,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 17:10:35,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1022 transitions. [2024-10-14 17:10:35,654 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8495428096425602 [2024-10-14 17:10:35,654 INFO L175 Difference]: Start difference. First operand has 364 places, 520 transitions, 1812 flow. Second operand 3 states and 1022 transitions. [2024-10-14 17:10:35,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 530 transitions, 1928 flow [2024-10-14 17:10:35,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 530 transitions, 1928 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 17:10:35,886 INFO L231 Difference]: Finished difference. Result has 367 places, 522 transitions, 1837 flow [2024-10-14 17:10:35,888 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=401, PETRI_DIFFERENCE_MINUEND_FLOW=1812, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=517, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1837, PETRI_PLACES=367, PETRI_TRANSITIONS=522} [2024-10-14 17:10:35,889 INFO L277 CegarLoopForPetriNet]: 360 programPoint places, 7 predicate places. [2024-10-14 17:10:35,890 INFO L471 AbstractCegarLoop]: Abstraction has has 367 places, 522 transitions, 1837 flow [2024-10-14 17:10:35,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 328.0) internal successors, (984), 3 states have internal predecessors, (984), 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) [2024-10-14 17:10:35,891 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:10:35,891 INFO L204 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:10:35,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 17:10:35,891 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-14 17:10:35,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:10:35,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1133418014, now seen corresponding path program 1 times [2024-10-14 17:10:35,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:10:35,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792399816] [2024-10-14 17:10:35,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:10:35,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:10:35,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:10:36,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:10:36,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:10:36,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792399816] [2024-10-14 17:10:36,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792399816] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:10:36,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:10:36,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 17:10:36,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948534118] [2024-10-14 17:10:36,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:10:36,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 17:10:36,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:10:36,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 17:10:36,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-14 17:10:36,845 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 401 [2024-10-14 17:10:36,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 522 transitions, 1837 flow. Second operand has 6 states, 6 states have (on average 265.1666666666667) internal successors, (1591), 6 states have internal predecessors, (1591), 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) [2024-10-14 17:10:36,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:10:36,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 401 [2024-10-14 17:10:36,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand