./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/pthread-ext/11_fmaxsymopt-race.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 4a390ef5 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/pthread-ext/11_fmaxsymopt-race.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 c885fc256284ed3b5456c69b30daa307e14001acfa6c144983451f9519cbd1fd --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 15:04:58,413 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 15:04:58,466 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-24 15:04:58,470 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 15:04:58,470 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 15:04:58,485 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 15:04:58,486 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 15:04:58,486 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 15:04:58,486 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 15:04:58,487 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 15:04:58,487 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 15:04:58,487 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 15:04:58,488 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 15:04:58,488 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 15:04:58,488 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 15:04:58,489 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 15:04:58,489 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 15:04:58,489 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 15:04:58,489 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 15:04:58,490 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 15:04:58,490 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 15:04:58,490 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 15:04:58,491 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-24 15:04:58,491 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 15:04:58,491 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 15:04:58,491 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 15:04:58,492 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 15:04:58,492 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 15:04:58,492 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 15:04:58,492 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 15:04:58,492 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 15:04:58,493 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 15:04:58,493 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 15:04:58,493 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 15:04:58,493 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 15:04:58,494 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 15:04:58,494 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 15:04:58,494 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 15:04:58,494 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 15:04:58,494 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 15:04:58,495 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 15:04:58,495 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c885fc256284ed3b5456c69b30daa307e14001acfa6c144983451f9519cbd1fd [2024-10-24 15:04:58,685 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 15:04:58,711 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 15:04:58,715 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 15:04:58,716 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 15:04:58,716 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 15:04:58,718 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/11_fmaxsymopt-race.i [2024-10-24 15:05:00,090 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 15:05:00,307 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 15:05:00,308 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/11_fmaxsymopt-race.i [2024-10-24 15:05:00,332 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d150ec4a7/165b37c407bb4e40a6902f261287ddb6/FLAGba4a35559 [2024-10-24 15:05:00,348 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d150ec4a7/165b37c407bb4e40a6902f261287ddb6 [2024-10-24 15:05:00,351 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 15:05:00,352 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 15:05:00,355 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 15:05:00,355 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 15:05:00,359 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 15:05:00,360 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:05:00" (1/1) ... [2024-10-24 15:05:00,363 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11dc6ad4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:00, skipping insertion in model container [2024-10-24 15:05:00,363 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:05:00" (1/1) ... [2024-10-24 15:05:00,401 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 15:05:00,781 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 15:05:00,793 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 15:05:00,838 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 15:05:00,872 INFO L204 MainTranslator]: Completed translation [2024-10-24 15:05:00,873 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:00 WrapperNode [2024-10-24 15:05:00,873 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 15:05:00,874 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 15:05:00,874 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 15:05:00,874 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 15:05:00,879 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:00" (1/1) ... [2024-10-24 15:05:00,888 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:00" (1/1) ... [2024-10-24 15:05:00,906 INFO L138 Inliner]: procedures = 164, calls = 27, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 111 [2024-10-24 15:05:00,906 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 15:05:00,907 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 15:05:00,907 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 15:05:00,907 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 15:05:00,916 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:00" (1/1) ... [2024-10-24 15:05:00,917 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:00" (1/1) ... [2024-10-24 15:05:00,921 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:00" (1/1) ... [2024-10-24 15:05:00,921 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:00" (1/1) ... [2024-10-24 15:05:00,927 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:00" (1/1) ... [2024-10-24 15:05:00,929 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:00" (1/1) ... [2024-10-24 15:05:00,930 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:00" (1/1) ... [2024-10-24 15:05:00,931 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:00" (1/1) ... [2024-10-24 15:05:00,933 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 15:05:00,933 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 15:05:00,934 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 15:05:00,934 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 15:05:00,934 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:00" (1/1) ... [2024-10-24 15:05:00,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 15:05:00,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 15:05:00,962 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) [2024-10-24 15:05:00,968 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 [2024-10-24 15:05:01,003 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-24 15:05:01,004 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-24 15:05:01,004 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-24 15:05:01,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-24 15:05:01,004 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-24 15:05:01,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 15:05:01,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-24 15:05:01,004 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-24 15:05:01,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 15:05:01,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 15:05:01,006 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 15:05:01,095 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 15:05:01,097 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 15:05:01,254 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 15:05:01,254 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 15:05:01,271 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 15:05:01,271 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-24 15:05:01,271 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:05:01 BoogieIcfgContainer [2024-10-24 15:05:01,271 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 15:05:01,273 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 15:05:01,273 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 15:05:01,276 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 15:05:01,276 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 03:05:00" (1/3) ... [2024-10-24 15:05:01,276 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@166b8eee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:05:01, skipping insertion in model container [2024-10-24 15:05:01,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:00" (2/3) ... [2024-10-24 15:05:01,277 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@166b8eee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:05:01, skipping insertion in model container [2024-10-24 15:05:01,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:05:01" (3/3) ... [2024-10-24 15:05:01,278 INFO L112 eAbstractionObserver]: Analyzing ICFG 11_fmaxsymopt-race.i [2024-10-24 15:05:01,290 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 15:05:01,291 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-10-24 15:05:01,291 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 15:05:01,354 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 15:05:01,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 126 transitions, 256 flow [2024-10-24 15:05:01,432 INFO L124 PetriNetUnfolderBase]: 12/135 cut-off events. [2024-10-24 15:05:01,433 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 15:05:01,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 135 events. 12/135 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 187 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 81. Up to 4 conditions per place. [2024-10-24 15:05:01,441 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 126 transitions, 256 flow [2024-10-24 15:05:01,445 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 126 transitions, 256 flow [2024-10-24 15:05:01,459 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 15:05:01,468 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;@1a7842be, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 15:05:01,468 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-10-24 15:05:01,483 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 15:05:01,484 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-10-24 15:05:01,484 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 15:05:01,484 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:05:01,485 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] [2024-10-24 15:05:01,485 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-24 15:05:01,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:05:01,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1413890492, now seen corresponding path program 1 times [2024-10-24 15:05:01,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:05:01,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776514096] [2024-10-24 15:05:01,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:01,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:05:01,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:05:02,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:05:02,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:05:02,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776514096] [2024-10-24 15:05:02,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776514096] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:05:02,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:05:02,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 15:05:02,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381802575] [2024-10-24 15:05:02,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:05:02,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 15:05:02,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:05:02,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 15:05:02,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-24 15:05:02,525 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 126 [2024-10-24 15:05:02,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 126 transitions, 256 flow. Second operand has 6 states, 6 states have (on average 99.5) internal successors, (597), 6 states have internal predecessors, (597), 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) [2024-10-24 15:05:02,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:05:02,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 126 [2024-10-24 15:05:02,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:05:02,649 INFO L124 PetriNetUnfolderBase]: 5/117 cut-off events. [2024-10-24 15:05:02,649 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-24 15:05:02,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 117 events. 5/117 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 129 event pairs, 0 based on Foata normal form. 13/119 useless extension candidates. Maximal degree in co-relation 76. Up to 14 conditions per place. [2024-10-24 15:05:02,651 INFO L140 encePairwiseOnDemand]: 113/126 looper letters, 13 selfloop transitions, 5 changer transitions 0/113 dead transitions. [2024-10-24 15:05:02,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 113 transitions, 266 flow [2024-10-24 15:05:02,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 15:05:02,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 15:05:02,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 614 transitions. [2024-10-24 15:05:02,684 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8121693121693122 [2024-10-24 15:05:02,690 INFO L175 Difference]: Start difference. First operand has 118 places, 126 transitions, 256 flow. Second operand 6 states and 614 transitions. [2024-10-24 15:05:02,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 113 transitions, 266 flow [2024-10-24 15:05:02,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 113 transitions, 266 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 15:05:02,705 INFO L231 Difference]: Finished difference. Result has 116 places, 113 transitions, 240 flow [2024-10-24 15:05:02,708 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=240, PETRI_PLACES=116, PETRI_TRANSITIONS=113} [2024-10-24 15:05:02,713 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, -2 predicate places. [2024-10-24 15:05:02,713 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 113 transitions, 240 flow [2024-10-24 15:05:02,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 99.5) internal successors, (597), 6 states have internal predecessors, (597), 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) [2024-10-24 15:05:02,714 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:05:02,714 INFO L204 CegarLoopForPetriNet]: trace histogram [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] [2024-10-24 15:05:02,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 15:05:02,715 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-24 15:05:02,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:05:02,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1553321828, now seen corresponding path program 1 times [2024-10-24 15:05:02,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:05:02,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013682022] [2024-10-24 15:05:02,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:02,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:05:02,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:05:02,769 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 15:05:02,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:05:02,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013682022] [2024-10-24 15:05:02,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013682022] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:05:02,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:05:02,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 15:05:02,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727189458] [2024-10-24 15:05:02,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:05:02,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 15:05:02,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:05:02,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 15:05:02,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 15:05:02,798 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 126 [2024-10-24 15:05:02,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 113 transitions, 240 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 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) [2024-10-24 15:05:02,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:05:02,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 126 [2024-10-24 15:05:02,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:05:02,826 INFO L124 PetriNetUnfolderBase]: 5/129 cut-off events. [2024-10-24 15:05:02,826 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-24 15:05:02,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 129 events. 5/129 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 125 event pairs, 0 based on Foata normal form. 1/120 useless extension candidates. Maximal degree in co-relation 92. Up to 9 conditions per place. [2024-10-24 15:05:02,833 INFO L140 encePairwiseOnDemand]: 123/126 looper letters, 7 selfloop transitions, 2 changer transitions 0/114 dead transitions. [2024-10-24 15:05:02,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 114 transitions, 262 flow [2024-10-24 15:05:02,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 15:05:02,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 15:05:02,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 337 transitions. [2024-10-24 15:05:02,835 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8915343915343915 [2024-10-24 15:05:02,835 INFO L175 Difference]: Start difference. First operand has 116 places, 113 transitions, 240 flow. Second operand 3 states and 337 transitions. [2024-10-24 15:05:02,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 114 transitions, 262 flow [2024-10-24 15:05:02,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 114 transitions, 250 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-24 15:05:02,841 INFO L231 Difference]: Finished difference. Result has 114 places, 114 transitions, 242 flow [2024-10-24 15:05:02,842 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=242, PETRI_PLACES=114, PETRI_TRANSITIONS=114} [2024-10-24 15:05:02,842 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, -4 predicate places. [2024-10-24 15:05:02,842 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 114 transitions, 242 flow [2024-10-24 15:05:02,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 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) [2024-10-24 15:05:02,843 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:05:02,847 INFO L204 CegarLoopForPetriNet]: trace histogram [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] [2024-10-24 15:05:02,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 15:05:02,848 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-24 15:05:02,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:05:02,848 INFO L85 PathProgramCache]: Analyzing trace with hash -582448135, now seen corresponding path program 1 times [2024-10-24 15:05:02,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:05:02,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55346770] [2024-10-24 15:05:02,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:02,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:05:02,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:05:02,936 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 15:05:02,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:05:02,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55346770] [2024-10-24 15:05:02,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55346770] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 15:05:02,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621704932] [2024-10-24 15:05:02,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:02,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 15:05:02,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 15:05:02,939 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) [2024-10-24 15:05:02,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 15:05:03,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:05:03,006 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 15:05:03,010 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 15:05:03,103 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 15:05:03,103 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 15:05:03,230 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 15:05:03,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621704932] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 15:05:03,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 15:05:03,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-24 15:05:03,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891086345] [2024-10-24 15:05:03,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 15:05:03,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 15:05:03,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:05:03,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 15:05:03,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-24 15:05:03,307 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 126 [2024-10-24 15:05:03,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 114 transitions, 242 flow. Second operand has 10 states, 10 states have (on average 107.9) internal successors, (1079), 10 states have internal predecessors, (1079), 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) [2024-10-24 15:05:03,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:05:03,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 126 [2024-10-24 15:05:03,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:05:03,398 INFO L124 PetriNetUnfolderBase]: 5/144 cut-off events. [2024-10-24 15:05:03,398 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 15:05:03,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 144 events. 5/144 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 99 event pairs, 0 based on Foata normal form. 2/136 useless extension candidates. Maximal degree in co-relation 127. Up to 9 conditions per place. [2024-10-24 15:05:03,400 INFO L140 encePairwiseOnDemand]: 120/126 looper letters, 11 selfloop transitions, 9 changer transitions 0/122 dead transitions. [2024-10-24 15:05:03,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 122 transitions, 300 flow [2024-10-24 15:05:03,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 15:05:03,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-24 15:05:03,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 976 transitions. [2024-10-24 15:05:03,404 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8606701940035273 [2024-10-24 15:05:03,404 INFO L175 Difference]: Start difference. First operand has 114 places, 114 transitions, 242 flow. Second operand 9 states and 976 transitions. [2024-10-24 15:05:03,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 122 transitions, 300 flow [2024-10-24 15:05:03,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 122 transitions, 298 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 15:05:03,407 INFO L231 Difference]: Finished difference. Result has 124 places, 120 transitions, 290 flow [2024-10-24 15:05:03,408 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=290, PETRI_PLACES=124, PETRI_TRANSITIONS=120} [2024-10-24 15:05:03,408 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 6 predicate places. [2024-10-24 15:05:03,408 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 120 transitions, 290 flow [2024-10-24 15:05:03,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 107.9) internal successors, (1079), 10 states have internal predecessors, (1079), 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) [2024-10-24 15:05:03,409 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:05:03,409 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-24 15:05:03,428 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 15:05:03,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 15:05:03,616 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-24 15:05:03,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:05:03,617 INFO L85 PathProgramCache]: Analyzing trace with hash 606994649, now seen corresponding path program 2 times [2024-10-24 15:05:03,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:05:03,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309243931] [2024-10-24 15:05:03,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:03,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:05:03,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:05:03,827 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 15:05:03,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:05:03,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309243931] [2024-10-24 15:05:03,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309243931] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 15:05:03,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316171896] [2024-10-24 15:05:03,828 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 15:05:03,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 15:05:03,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 15:05:03,834 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) [2024-10-24 15:05:03,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 15:05:03,921 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 15:05:03,921 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 15:05:03,922 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 15:05:03,924 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 15:05:03,979 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 15:05:03,979 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 15:05:04,068 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 15:05:04,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316171896] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 15:05:04,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 15:05:04,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-24 15:05:04,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550861564] [2024-10-24 15:05:04,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 15:05:04,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-24 15:05:04,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:05:04,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-24 15:05:04,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-10-24 15:05:04,144 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 126 [2024-10-24 15:05:04,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 120 transitions, 290 flow. Second operand has 15 states, 15 states have (on average 108.06666666666666) internal successors, (1621), 15 states have internal predecessors, (1621), 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) [2024-10-24 15:05:04,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:05:04,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 126 [2024-10-24 15:05:04,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:05:04,303 INFO L124 PetriNetUnfolderBase]: 5/183 cut-off events. [2024-10-24 15:05:04,303 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-10-24 15:05:04,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270 conditions, 183 events. 5/183 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 99 event pairs, 0 based on Foata normal form. 3/176 useless extension candidates. Maximal degree in co-relation 186. Up to 9 conditions per place. [2024-10-24 15:05:04,304 INFO L140 encePairwiseOnDemand]: 120/126 looper letters, 14 selfloop transitions, 18 changer transitions 0/134 dead transitions. [2024-10-24 15:05:04,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 134 transitions, 428 flow [2024-10-24 15:05:04,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-24 15:05:04,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-24 15:05:04,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1943 transitions. [2024-10-24 15:05:04,307 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8567019400352733 [2024-10-24 15:05:04,307 INFO L175 Difference]: Start difference. First operand has 124 places, 120 transitions, 290 flow. Second operand 18 states and 1943 transitions. [2024-10-24 15:05:04,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 134 transitions, 428 flow [2024-10-24 15:05:04,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 134 transitions, 416 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-10-24 15:05:04,310 INFO L231 Difference]: Finished difference. Result has 144 places, 130 transitions, 390 flow [2024-10-24 15:05:04,311 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=390, PETRI_PLACES=144, PETRI_TRANSITIONS=130} [2024-10-24 15:05:04,311 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 26 predicate places. [2024-10-24 15:05:04,311 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 130 transitions, 390 flow [2024-10-24 15:05:04,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 108.06666666666666) internal successors, (1621), 15 states have internal predecessors, (1621), 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) [2024-10-24 15:05:04,312 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:05:04,313 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2024-10-24 15:05:04,329 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 15:05:04,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-10-24 15:05:04,517 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-24 15:05:04,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:05:04,518 INFO L85 PathProgramCache]: Analyzing trace with hash 870487548, now seen corresponding path program 3 times [2024-10-24 15:05:04,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:05:04,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064154879] [2024-10-24 15:05:04,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:04,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:05:04,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:05:04,567 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 15:05:04,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:05:04,607 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 15:05:04,607 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 15:05:04,608 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2024-10-24 15:05:04,609 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2024-10-24 15:05:04,609 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2024-10-24 15:05:04,609 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2024-10-24 15:05:04,609 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2024-10-24 15:05:04,609 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2024-10-24 15:05:04,610 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2024-10-24 15:05:04,610 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2024-10-24 15:05:04,610 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2024-10-24 15:05:04,610 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2024-10-24 15:05:04,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 15:05:04,611 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-10-24 15:05:04,612 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-24 15:05:04,613 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-24 15:05:04,634 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 15:05:04,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 197 transitions, 404 flow [2024-10-24 15:05:04,651 INFO L124 PetriNetUnfolderBase]: 21/217 cut-off events. [2024-10-24 15:05:04,651 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 15:05:04,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 217 events. 21/217 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 504 event pairs, 0 based on Foata normal form. 0/184 useless extension candidates. Maximal degree in co-relation 151. Up to 6 conditions per place. [2024-10-24 15:05:04,653 INFO L82 GeneralOperation]: Start removeDead. Operand has 183 places, 197 transitions, 404 flow [2024-10-24 15:05:04,655 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 183 places, 197 transitions, 404 flow [2024-10-24 15:05:04,655 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 15:05:04,656 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;@1a7842be, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 15:05:04,656 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-10-24 15:05:04,659 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 15:05:04,659 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-10-24 15:05:04,659 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 15:05:04,659 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:05:04,659 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] [2024-10-24 15:05:04,660 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-10-24 15:05:04,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:05:04,660 INFO L85 PathProgramCache]: Analyzing trace with hash -525192223, now seen corresponding path program 1 times [2024-10-24 15:05:04,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:05:04,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296486958] [2024-10-24 15:05:04,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:04,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:05:04,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:05:04,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:05:04,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:05:04,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296486958] [2024-10-24 15:05:04,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296486958] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:05:04,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:05:04,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 15:05:04,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880270855] [2024-10-24 15:05:04,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:05:04,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 15:05:04,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:05:04,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 15:05:04,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-24 15:05:05,105 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 197 [2024-10-24 15:05:05,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 197 transitions, 404 flow. Second operand has 6 states, 6 states have (on average 158.5) internal successors, (951), 6 states have internal predecessors, (951), 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) [2024-10-24 15:05:05,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:05:05,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 197 [2024-10-24 15:05:05,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:05:05,240 INFO L124 PetriNetUnfolderBase]: 90/606 cut-off events. [2024-10-24 15:05:05,240 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-10-24 15:05:05,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 762 conditions, 606 events. 90/606 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3405 event pairs, 42 based on Foata normal form. 110/620 useless extension candidates. Maximal degree in co-relation 313. Up to 125 conditions per place. [2024-10-24 15:05:05,246 INFO L140 encePairwiseOnDemand]: 180/197 looper letters, 20 selfloop transitions, 5 changer transitions 0/178 dead transitions. [2024-10-24 15:05:05,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 178 transitions, 416 flow [2024-10-24 15:05:05,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 15:05:05,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 15:05:05,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 979 transitions. [2024-10-24 15:05:05,248 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8282571912013537 [2024-10-24 15:05:05,248 INFO L175 Difference]: Start difference. First operand has 183 places, 197 transitions, 404 flow. Second operand 6 states and 979 transitions. [2024-10-24 15:05:05,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 178 transitions, 416 flow [2024-10-24 15:05:05,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 178 transitions, 416 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 15:05:05,250 INFO L231 Difference]: Finished difference. Result has 179 places, 178 transitions, 376 flow [2024-10-24 15:05:05,251 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=376, PETRI_PLACES=179, PETRI_TRANSITIONS=178} [2024-10-24 15:05:05,252 INFO L277 CegarLoopForPetriNet]: 183 programPoint places, -4 predicate places. [2024-10-24 15:05:05,252 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 178 transitions, 376 flow [2024-10-24 15:05:05,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 158.5) internal successors, (951), 6 states have internal predecessors, (951), 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) [2024-10-24 15:05:05,253 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:05:05,253 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 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] [2024-10-24 15:05:05,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 15:05:05,253 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-10-24 15:05:05,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:05:05,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1573277030, now seen corresponding path program 1 times [2024-10-24 15:05:05,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:05:05,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617059096] [2024-10-24 15:05:05,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:05,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:05:05,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:05:05,285 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-24 15:05:05,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:05:05,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617059096] [2024-10-24 15:05:05,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617059096] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:05:05,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:05:05,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 15:05:05,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842221113] [2024-10-24 15:05:05,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:05:05,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 15:05:05,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:05:05,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 15:05:05,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 15:05:05,306 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 197 [2024-10-24 15:05:05,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 178 transitions, 376 flow. Second operand has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 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) [2024-10-24 15:05:05,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:05:05,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 197 [2024-10-24 15:05:05,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:05:05,352 INFO L124 PetriNetUnfolderBase]: 23/350 cut-off events. [2024-10-24 15:05:05,352 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-10-24 15:05:05,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 400 conditions, 350 events. 23/350 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1173 event pairs, 6 based on Foata normal form. 1/310 useless extension candidates. Maximal degree in co-relation 337. Up to 24 conditions per place. [2024-10-24 15:05:05,355 INFO L140 encePairwiseOnDemand]: 194/197 looper letters, 10 selfloop transitions, 2 changer transitions 0/179 dead transitions. [2024-10-24 15:05:05,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 179 transitions, 404 flow [2024-10-24 15:05:05,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 15:05:05,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 15:05:05,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 529 transitions. [2024-10-24 15:05:05,356 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8950930626057529 [2024-10-24 15:05:05,356 INFO L175 Difference]: Start difference. First operand has 179 places, 178 transitions, 376 flow. Second operand 3 states and 529 transitions. [2024-10-24 15:05:05,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 179 transitions, 404 flow [2024-10-24 15:05:05,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 179 transitions, 392 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-24 15:05:05,359 INFO L231 Difference]: Finished difference. Result has 177 places, 179 transitions, 378 flow [2024-10-24 15:05:05,359 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=378, PETRI_PLACES=177, PETRI_TRANSITIONS=179} [2024-10-24 15:05:05,359 INFO L277 CegarLoopForPetriNet]: 183 programPoint places, -6 predicate places. [2024-10-24 15:05:05,360 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 179 transitions, 378 flow [2024-10-24 15:05:05,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 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) [2024-10-24 15:05:05,360 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:05:05,360 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 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] [2024-10-24 15:05:05,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 15:05:05,360 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-10-24 15:05:05,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:05:05,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1381101320, now seen corresponding path program 1 times [2024-10-24 15:05:05,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:05:05,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980082568] [2024-10-24 15:05:05,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:05,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:05:05,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:05:05,408 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-24 15:05:05,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:05:05,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980082568] [2024-10-24 15:05:05,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980082568] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 15:05:05,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582595286] [2024-10-24 15:05:05,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:05,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 15:05:05,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 15:05:05,410 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) [2024-10-24 15:05:05,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 15:05:05,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:05:05,474 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 15:05:05,475 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 15:05:05,502 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-24 15:05:05,502 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 15:05:05,544 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-24 15:05:05,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582595286] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 15:05:05,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 15:05:05,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-24 15:05:05,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191198955] [2024-10-24 15:05:05,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 15:05:05,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 15:05:05,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:05:05,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 15:05:05,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-24 15:05:05,607 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 197 [2024-10-24 15:05:05,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 179 transitions, 378 flow. Second operand has 10 states, 10 states have (on average 171.0) internal successors, (1710), 10 states have internal predecessors, (1710), 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) [2024-10-24 15:05:05,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:05:05,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 197 [2024-10-24 15:05:05,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:05:05,714 INFO L124 PetriNetUnfolderBase]: 23/365 cut-off events. [2024-10-24 15:05:05,715 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-10-24 15:05:05,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 423 conditions, 365 events. 23/365 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1146 event pairs, 6 based on Foata normal form. 2/326 useless extension candidates. Maximal degree in co-relation 372. Up to 24 conditions per place. [2024-10-24 15:05:05,717 INFO L140 encePairwiseOnDemand]: 191/197 looper letters, 14 selfloop transitions, 9 changer transitions 0/187 dead transitions. [2024-10-24 15:05:05,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 187 transitions, 442 flow [2024-10-24 15:05:05,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 15:05:05,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-24 15:05:05,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1546 transitions. [2024-10-24 15:05:05,720 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8719684151156233 [2024-10-24 15:05:05,721 INFO L175 Difference]: Start difference. First operand has 177 places, 179 transitions, 378 flow. Second operand 9 states and 1546 transitions. [2024-10-24 15:05:05,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 187 transitions, 442 flow [2024-10-24 15:05:05,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 187 transitions, 440 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 15:05:05,724 INFO L231 Difference]: Finished difference. Result has 187 places, 185 transitions, 426 flow [2024-10-24 15:05:05,724 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=426, PETRI_PLACES=187, PETRI_TRANSITIONS=185} [2024-10-24 15:05:05,725 INFO L277 CegarLoopForPetriNet]: 183 programPoint places, 4 predicate places. [2024-10-24 15:05:05,725 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 185 transitions, 426 flow [2024-10-24 15:05:05,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 171.0) internal successors, (1710), 10 states have internal predecessors, (1710), 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) [2024-10-24 15:05:05,727 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:05:05,727 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-24 15:05:05,742 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-24 15:05:05,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 15:05:05,928 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-10-24 15:05:05,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:05:05,932 INFO L85 PathProgramCache]: Analyzing trace with hash -258899912, now seen corresponding path program 2 times [2024-10-24 15:05:05,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:05:05,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311717703] [2024-10-24 15:05:05,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:05,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:05:05,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:05:06,117 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-24 15:05:06,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:05:06,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311717703] [2024-10-24 15:05:06,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311717703] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 15:05:06,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434200791] [2024-10-24 15:05:06,118 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 15:05:06,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 15:05:06,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 15:05:06,121 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 15:05:06,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 15:05:06,204 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 15:05:06,204 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 15:05:06,206 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 15:05:06,207 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 15:05:06,282 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-24 15:05:06,284 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 15:05:06,483 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-24 15:05:06,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434200791] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 15:05:06,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 15:05:06,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-24 15:05:06,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782616093] [2024-10-24 15:05:06,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 15:05:06,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-24 15:05:06,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:05:06,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-24 15:05:06,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-10-24 15:05:06,577 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 197 [2024-10-24 15:05:06,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 185 transitions, 426 flow. Second operand has 15 states, 15 states have (on average 171.13333333333333) internal successors, (2567), 15 states have internal predecessors, (2567), 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) [2024-10-24 15:05:06,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:05:06,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 197 [2024-10-24 15:05:06,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:05:06,723 INFO L124 PetriNetUnfolderBase]: 23/404 cut-off events. [2024-10-24 15:05:06,723 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-10-24 15:05:06,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 516 conditions, 404 events. 23/404 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1146 event pairs, 6 based on Foata normal form. 3/366 useless extension candidates. Maximal degree in co-relation 334. Up to 24 conditions per place. [2024-10-24 15:05:06,726 INFO L140 encePairwiseOnDemand]: 191/197 looper letters, 17 selfloop transitions, 18 changer transitions 0/199 dead transitions. [2024-10-24 15:05:06,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 199 transitions, 570 flow [2024-10-24 15:05:06,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-24 15:05:06,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-24 15:05:06,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3080 transitions. [2024-10-24 15:05:06,731 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8685843203609701 [2024-10-24 15:05:06,731 INFO L175 Difference]: Start difference. First operand has 187 places, 185 transitions, 426 flow. Second operand 18 states and 3080 transitions. [2024-10-24 15:05:06,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 199 transitions, 570 flow [2024-10-24 15:05:06,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 199 transitions, 558 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-10-24 15:05:06,736 INFO L231 Difference]: Finished difference. Result has 207 places, 195 transitions, 526 flow [2024-10-24 15:05:06,737 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=526, PETRI_PLACES=207, PETRI_TRANSITIONS=195} [2024-10-24 15:05:06,737 INFO L277 CegarLoopForPetriNet]: 183 programPoint places, 24 predicate places. [2024-10-24 15:05:06,737 INFO L471 AbstractCegarLoop]: Abstraction has has 207 places, 195 transitions, 526 flow [2024-10-24 15:05:06,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 171.13333333333333) internal successors, (2567), 15 states have internal predecessors, (2567), 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) [2024-10-24 15:05:06,739 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:05:06,740 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 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] [2024-10-24 15:05:06,754 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-24 15:05:06,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 15:05:06,944 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-10-24 15:05:06,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:05:06,945 INFO L85 PathProgramCache]: Analyzing trace with hash 2092416218, now seen corresponding path program 3 times [2024-10-24 15:05:06,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:05:06,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443522652] [2024-10-24 15:05:06,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:06,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:05:06,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:05:06,976 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 15:05:06,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:05:07,007 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 15:05:07,007 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 15:05:07,008 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2024-10-24 15:05:07,008 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 14 remaining) [2024-10-24 15:05:07,008 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 14 remaining) [2024-10-24 15:05:07,008 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 14 remaining) [2024-10-24 15:05:07,008 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (9 of 14 remaining) [2024-10-24 15:05:07,008 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 14 remaining) [2024-10-24 15:05:07,009 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 14 remaining) [2024-10-24 15:05:07,009 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 14 remaining) [2024-10-24 15:05:07,009 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 14 remaining) [2024-10-24 15:05:07,009 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 14 remaining) [2024-10-24 15:05:07,009 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 14 remaining) [2024-10-24 15:05:07,009 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 14 remaining) [2024-10-24 15:05:07,009 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 14 remaining) [2024-10-24 15:05:07,009 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 14 remaining) [2024-10-24 15:05:07,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 15:05:07,010 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-10-24 15:05:07,010 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-24 15:05:07,010 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-24 15:05:07,033 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 15:05:07,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 248 places, 268 transitions, 554 flow [2024-10-24 15:05:07,085 INFO L124 PetriNetUnfolderBase]: 30/299 cut-off events. [2024-10-24 15:05:07,085 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-24 15:05:07,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 299 events. 30/299 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 903 event pairs, 0 based on Foata normal form. 0/252 useless extension candidates. Maximal degree in co-relation 221. Up to 8 conditions per place. [2024-10-24 15:05:07,088 INFO L82 GeneralOperation]: Start removeDead. Operand has 248 places, 268 transitions, 554 flow [2024-10-24 15:05:07,090 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 248 places, 268 transitions, 554 flow [2024-10-24 15:05:07,095 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 15:05:07,096 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;@1a7842be, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 15:05:07,096 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-10-24 15:05:07,100 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 15:05:07,104 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-10-24 15:05:07,104 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 15:05:07,104 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:05:07,105 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] [2024-10-24 15:05:07,105 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-10-24 15:05:07,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:05:07,105 INFO L85 PathProgramCache]: Analyzing trace with hash -568710291, now seen corresponding path program 1 times [2024-10-24 15:05:07,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:05:07,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950935735] [2024-10-24 15:05:07,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:07,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:05:07,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:05:07,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:05:07,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:05:07,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950935735] [2024-10-24 15:05:07,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950935735] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:05:07,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:05:07,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 15:05:07,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567419827] [2024-10-24 15:05:07,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:05:07,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 15:05:07,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:05:07,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 15:05:07,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-24 15:05:07,534 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 268 [2024-10-24 15:05:07,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 268 transitions, 554 flow. Second operand has 6 states, 6 states have (on average 217.5) internal successors, (1305), 6 states have internal predecessors, (1305), 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) [2024-10-24 15:05:07,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:05:07,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 268 [2024-10-24 15:05:07,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:05:07,923 INFO L124 PetriNetUnfolderBase]: 1081/4144 cut-off events. [2024-10-24 15:05:07,923 INFO L125 PetriNetUnfolderBase]: For 364/364 co-relation queries the response was YES. [2024-10-24 15:05:07,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5690 conditions, 4144 events. 1081/4144 cut-off events. For 364/364 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 39236 event pairs, 630 based on Foata normal form. 923/4280 useless extension candidates. Maximal degree in co-relation 1471. Up to 1318 conditions per place. [2024-10-24 15:05:07,965 INFO L140 encePairwiseOnDemand]: 247/268 looper letters, 27 selfloop transitions, 5 changer transitions 0/243 dead transitions. [2024-10-24 15:05:07,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 243 transitions, 568 flow [2024-10-24 15:05:07,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 15:05:07,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 15:05:07,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1344 transitions. [2024-10-24 15:05:07,968 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.835820895522388 [2024-10-24 15:05:07,968 INFO L175 Difference]: Start difference. First operand has 248 places, 268 transitions, 554 flow. Second operand 6 states and 1344 transitions. [2024-10-24 15:05:07,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 243 transitions, 568 flow [2024-10-24 15:05:07,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 243 transitions, 566 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-24 15:05:07,971 INFO L231 Difference]: Finished difference. Result has 242 places, 243 transitions, 512 flow [2024-10-24 15:05:07,971 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=512, PETRI_PLACES=242, PETRI_TRANSITIONS=243} [2024-10-24 15:05:07,972 INFO L277 CegarLoopForPetriNet]: 248 programPoint places, -6 predicate places. [2024-10-24 15:05:07,972 INFO L471 AbstractCegarLoop]: Abstraction has has 242 places, 243 transitions, 512 flow [2024-10-24 15:05:07,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 217.5) internal successors, (1305), 6 states have internal predecessors, (1305), 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) [2024-10-24 15:05:07,972 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:05:07,972 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:05:07,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 15:05:07,973 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-10-24 15:05:07,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:05:07,973 INFO L85 PathProgramCache]: Analyzing trace with hash 2102788219, now seen corresponding path program 1 times [2024-10-24 15:05:07,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:05:07,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342279060] [2024-10-24 15:05:07,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:07,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:05:07,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:05:08,005 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-24 15:05:08,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:05:08,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342279060] [2024-10-24 15:05:08,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342279060] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:05:08,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:05:08,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 15:05:08,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395012638] [2024-10-24 15:05:08,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:05:08,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 15:05:08,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:05:08,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 15:05:08,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 15:05:08,027 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 268 [2024-10-24 15:05:08,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 243 transitions, 512 flow. Second operand has 3 states, 3 states have (on average 237.33333333333334) internal successors, (712), 3 states have internal predecessors, (712), 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) [2024-10-24 15:05:08,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:05:08,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 268 [2024-10-24 15:05:08,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:05:08,122 INFO L124 PetriNetUnfolderBase]: 95/1031 cut-off events. [2024-10-24 15:05:08,122 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2024-10-24 15:05:08,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1172 conditions, 1031 events. 95/1031 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 6257 event pairs, 42 based on Foata normal form. 1/897 useless extension candidates. Maximal degree in co-relation 1108. Up to 87 conditions per place. [2024-10-24 15:05:08,134 INFO L140 encePairwiseOnDemand]: 265/268 looper letters, 13 selfloop transitions, 2 changer transitions 0/244 dead transitions. [2024-10-24 15:05:08,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 244 transitions, 546 flow [2024-10-24 15:05:08,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 15:05:08,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 15:05:08,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 721 transitions. [2024-10-24 15:05:08,136 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8967661691542289 [2024-10-24 15:05:08,136 INFO L175 Difference]: Start difference. First operand has 242 places, 243 transitions, 512 flow. Second operand 3 states and 721 transitions. [2024-10-24 15:05:08,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 244 transitions, 546 flow [2024-10-24 15:05:08,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 244 transitions, 534 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-24 15:05:08,139 INFO L231 Difference]: Finished difference. Result has 240 places, 244 transitions, 514 flow [2024-10-24 15:05:08,139 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=514, PETRI_PLACES=240, PETRI_TRANSITIONS=244} [2024-10-24 15:05:08,140 INFO L277 CegarLoopForPetriNet]: 248 programPoint places, -8 predicate places. [2024-10-24 15:05:08,140 INFO L471 AbstractCegarLoop]: Abstraction has has 240 places, 244 transitions, 514 flow [2024-10-24 15:05:08,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 237.33333333333334) internal successors, (712), 3 states have internal predecessors, (712), 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) [2024-10-24 15:05:08,140 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:05:08,140 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:05:08,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 15:05:08,140 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-10-24 15:05:08,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:05:08,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1237560471, now seen corresponding path program 1 times [2024-10-24 15:05:08,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:05:08,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269507341] [2024-10-24 15:05:08,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:08,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:05:08,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:05:08,181 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-24 15:05:08,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:05:08,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269507341] [2024-10-24 15:05:08,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269507341] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 15:05:08,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709823988] [2024-10-24 15:05:08,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:08,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 15:05:08,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 15:05:08,183 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 15:05:08,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 15:05:08,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:05:08,257 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 15:05:08,258 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 15:05:08,280 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-24 15:05:08,281 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 15:05:08,311 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-24 15:05:08,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709823988] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 15:05:08,312 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 15:05:08,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-24 15:05:08,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564258921] [2024-10-24 15:05:08,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 15:05:08,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 15:05:08,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:05:08,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 15:05:08,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-24 15:05:08,369 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 268 [2024-10-24 15:05:08,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 244 transitions, 514 flow. Second operand has 10 states, 10 states have (on average 234.1) internal successors, (2341), 10 states have internal predecessors, (2341), 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) [2024-10-24 15:05:08,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:05:08,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 268 [2024-10-24 15:05:08,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:05:08,545 INFO L124 PetriNetUnfolderBase]: 95/1046 cut-off events. [2024-10-24 15:05:08,545 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-10-24 15:05:08,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1195 conditions, 1046 events. 95/1046 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 6217 event pairs, 42 based on Foata normal form. 2/913 useless extension candidates. Maximal degree in co-relation 1143. Up to 87 conditions per place. [2024-10-24 15:05:08,552 INFO L140 encePairwiseOnDemand]: 262/268 looper letters, 17 selfloop transitions, 9 changer transitions 0/252 dead transitions. [2024-10-24 15:05:08,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 252 transitions, 584 flow [2024-10-24 15:05:08,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 15:05:08,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-24 15:05:08,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2116 transitions. [2024-10-24 15:05:08,556 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8772802653399668 [2024-10-24 15:05:08,556 INFO L175 Difference]: Start difference. First operand has 240 places, 244 transitions, 514 flow. Second operand 9 states and 2116 transitions. [2024-10-24 15:05:08,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 252 transitions, 584 flow [2024-10-24 15:05:08,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 252 transitions, 582 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 15:05:08,559 INFO L231 Difference]: Finished difference. Result has 250 places, 250 transitions, 562 flow [2024-10-24 15:05:08,559 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=562, PETRI_PLACES=250, PETRI_TRANSITIONS=250} [2024-10-24 15:05:08,559 INFO L277 CegarLoopForPetriNet]: 248 programPoint places, 2 predicate places. [2024-10-24 15:05:08,559 INFO L471 AbstractCegarLoop]: Abstraction has has 250 places, 250 transitions, 562 flow [2024-10-24 15:05:08,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 234.1) internal successors, (2341), 10 states have internal predecessors, (2341), 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) [2024-10-24 15:05:08,560 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:05:08,560 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:05:08,576 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-24 15:05:08,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-24 15:05:08,761 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-10-24 15:05:08,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:05:08,761 INFO L85 PathProgramCache]: Analyzing trace with hash 805181609, now seen corresponding path program 2 times [2024-10-24 15:05:08,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:05:08,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931361271] [2024-10-24 15:05:08,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:08,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:05:08,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:05:08,857 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-24 15:05:08,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:05:08,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931361271] [2024-10-24 15:05:08,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931361271] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 15:05:08,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313377726] [2024-10-24 15:05:08,858 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 15:05:08,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 15:05:08,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 15:05:08,861 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 15:05:08,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 15:05:08,951 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 15:05:08,952 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 15:05:08,953 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 15:05:08,954 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 15:05:09,013 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-24 15:05:09,013 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 15:05:09,099 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-24 15:05:09,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313377726] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 15:05:09,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 15:05:09,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-24 15:05:09,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405186463] [2024-10-24 15:05:09,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 15:05:09,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-24 15:05:09,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:05:09,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-24 15:05:09,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-10-24 15:05:09,203 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 268 [2024-10-24 15:05:09,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 250 transitions, 562 flow. Second operand has 15 states, 15 states have (on average 234.2) internal successors, (3513), 15 states have internal predecessors, (3513), 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) [2024-10-24 15:05:09,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:05:09,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 268 [2024-10-24 15:05:09,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:05:09,453 INFO L124 PetriNetUnfolderBase]: 95/1085 cut-off events. [2024-10-24 15:05:09,454 INFO L125 PetriNetUnfolderBase]: For 87/87 co-relation queries the response was YES. [2024-10-24 15:05:09,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1288 conditions, 1085 events. 95/1085 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 6263 event pairs, 42 based on Foata normal form. 3/953 useless extension candidates. Maximal degree in co-relation 1105. Up to 87 conditions per place. [2024-10-24 15:05:09,471 INFO L140 encePairwiseOnDemand]: 262/268 looper letters, 20 selfloop transitions, 18 changer transitions 0/264 dead transitions. [2024-10-24 15:05:09,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 264 transitions, 712 flow [2024-10-24 15:05:09,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-24 15:05:09,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-24 15:05:09,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4217 transitions. [2024-10-24 15:05:09,495 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8741708126036484 [2024-10-24 15:05:09,495 INFO L175 Difference]: Start difference. First operand has 250 places, 250 transitions, 562 flow. Second operand 18 states and 4217 transitions. [2024-10-24 15:05:09,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 264 transitions, 712 flow [2024-10-24 15:05:09,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 264 transitions, 700 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-10-24 15:05:09,499 INFO L231 Difference]: Finished difference. Result has 270 places, 260 transitions, 662 flow [2024-10-24 15:05:09,503 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=662, PETRI_PLACES=270, PETRI_TRANSITIONS=260} [2024-10-24 15:05:09,505 INFO L277 CegarLoopForPetriNet]: 248 programPoint places, 22 predicate places. [2024-10-24 15:05:09,505 INFO L471 AbstractCegarLoop]: Abstraction has has 270 places, 260 transitions, 662 flow [2024-10-24 15:05:09,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 234.2) internal successors, (3513), 15 states have internal predecessors, (3513), 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) [2024-10-24 15:05:09,511 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:05:09,511 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:05:09,525 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-24 15:05:09,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 15:05:09,714 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-10-24 15:05:09,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:05:09,714 INFO L85 PathProgramCache]: Analyzing trace with hash -968079173, now seen corresponding path program 3 times [2024-10-24 15:05:09,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:05:09,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204951472] [2024-10-24 15:05:09,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:09,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:05:09,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:05:09,754 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 15:05:09,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:05:09,799 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 15:05:09,799 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 15:05:09,799 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2024-10-24 15:05:09,800 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (16 of 18 remaining) [2024-10-24 15:05:09,800 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 18 remaining) [2024-10-24 15:05:09,800 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 18 remaining) [2024-10-24 15:05:09,800 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (13 of 18 remaining) [2024-10-24 15:05:09,800 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (12 of 18 remaining) [2024-10-24 15:05:09,800 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 18 remaining) [2024-10-24 15:05:09,800 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 18 remaining) [2024-10-24 15:05:09,801 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 18 remaining) [2024-10-24 15:05:09,801 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 18 remaining) [2024-10-24 15:05:09,801 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 18 remaining) [2024-10-24 15:05:09,801 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 18 remaining) [2024-10-24 15:05:09,801 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 18 remaining) [2024-10-24 15:05:09,801 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 18 remaining) [2024-10-24 15:05:09,801 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 18 remaining) [2024-10-24 15:05:09,801 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 18 remaining) [2024-10-24 15:05:09,801 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 18 remaining) [2024-10-24 15:05:09,801 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 18 remaining) [2024-10-24 15:05:09,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-24 15:05:09,802 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-10-24 15:05:09,803 WARN L239 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-24 15:05:09,803 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-24 15:05:09,846 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 15:05:09,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 313 places, 339 transitions, 706 flow [2024-10-24 15:05:09,896 INFO L124 PetriNetUnfolderBase]: 39/381 cut-off events. [2024-10-24 15:05:09,896 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-24 15:05:09,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 400 conditions, 381 events. 39/381 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1314 event pairs, 0 based on Foata normal form. 0/320 useless extension candidates. Maximal degree in co-relation 307. Up to 10 conditions per place. [2024-10-24 15:05:09,902 INFO L82 GeneralOperation]: Start removeDead. Operand has 313 places, 339 transitions, 706 flow [2024-10-24 15:05:09,908 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 313 places, 339 transitions, 706 flow [2024-10-24 15:05:09,909 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 15:05:09,909 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;@1a7842be, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 15:05:09,909 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-10-24 15:05:09,911 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 15:05:09,912 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-10-24 15:05:09,912 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 15:05:09,912 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:05:09,912 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] [2024-10-24 15:05:09,912 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-24 15:05:09,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:05:09,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1283336288, now seen corresponding path program 1 times [2024-10-24 15:05:09,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:05:09,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534700485] [2024-10-24 15:05:09,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:09,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:05:09,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:05:10,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:05:10,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:05:10,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534700485] [2024-10-24 15:05:10,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534700485] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:05:10,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:05:10,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 15:05:10,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407590641] [2024-10-24 15:05:10,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:05:10,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 15:05:10,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:05:10,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 15:05:10,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-24 15:05:10,251 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 339 [2024-10-24 15:05:10,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 339 transitions, 706 flow. Second operand has 6 states, 6 states have (on average 276.5) internal successors, (1659), 6 states have internal predecessors, (1659), 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) [2024-10-24 15:05:10,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:05:10,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 339 [2024-10-24 15:05:10,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:05:15,005 INFO L124 PetriNetUnfolderBase]: 10778/30546 cut-off events. [2024-10-24 15:05:15,006 INFO L125 PetriNetUnfolderBase]: For 4130/4130 co-relation queries the response was YES. [2024-10-24 15:05:15,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44999 conditions, 30546 events. 10778/30546 cut-off events. For 4130/4130 co-relation queries the response was YES. Maximal size of possible extension queue 1419. Compared 371606 event pairs, 6804 based on Foata normal form. 7505/31785 useless extension candidates. Maximal degree in co-relation 6943. Up to 12509 conditions per place. [2024-10-24 15:05:15,592 INFO L140 encePairwiseOnDemand]: 314/339 looper letters, 34 selfloop transitions, 5 changer transitions 0/308 dead transitions. [2024-10-24 15:05:15,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 308 transitions, 722 flow [2024-10-24 15:05:15,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 15:05:15,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 15:05:15,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1709 transitions. [2024-10-24 15:05:15,597 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8402163225172075 [2024-10-24 15:05:15,597 INFO L175 Difference]: Start difference. First operand has 313 places, 339 transitions, 706 flow. Second operand 6 states and 1709 transitions. [2024-10-24 15:05:15,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 308 transitions, 722 flow [2024-10-24 15:05:15,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 308 transitions, 716 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-10-24 15:05:15,604 INFO L231 Difference]: Finished difference. Result has 305 places, 308 transitions, 648 flow [2024-10-24 15:05:15,605 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=648, PETRI_PLACES=305, PETRI_TRANSITIONS=308} [2024-10-24 15:05:15,606 INFO L277 CegarLoopForPetriNet]: 313 programPoint places, -8 predicate places. [2024-10-24 15:05:15,606 INFO L471 AbstractCegarLoop]: Abstraction has has 305 places, 308 transitions, 648 flow [2024-10-24 15:05:15,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 276.5) internal successors, (1659), 6 states have internal predecessors, (1659), 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) [2024-10-24 15:05:15,607 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:05:15,607 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] [2024-10-24 15:05:15,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-24 15:05:15,608 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-24 15:05:15,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:05:15,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1321109678, now seen corresponding path program 1 times [2024-10-24 15:05:15,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:05:15,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818477894] [2024-10-24 15:05:15,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:15,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:05:15,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:05:15,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:05:15,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:05:15,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818477894] [2024-10-24 15:05:15,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818477894] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:05:15,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:05:15,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 15:05:15,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674222738] [2024-10-24 15:05:15,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:05:15,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 15:05:15,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:05:15,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 15:05:15,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 15:05:15,662 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 339 [2024-10-24 15:05:15,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 308 transitions, 648 flow. Second operand has 3 states, 3 states have (on average 300.0) internal successors, (900), 3 states have internal predecessors, (900), 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) [2024-10-24 15:05:15,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:05:15,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 339 [2024-10-24 15:05:15,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:05:16,098 INFO L124 PetriNetUnfolderBase]: 365/3128 cut-off events. [2024-10-24 15:05:16,098 INFO L125 PetriNetUnfolderBase]: For 282/282 co-relation queries the response was YES. [2024-10-24 15:05:16,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3594 conditions, 3128 events. 365/3128 cut-off events. For 282/282 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 27378 event pairs, 204 based on Foata normal form. 1/2712 useless extension candidates. Maximal degree in co-relation 3529. Up to 330 conditions per place. [2024-10-24 15:05:16,138 INFO L140 encePairwiseOnDemand]: 336/339 looper letters, 16 selfloop transitions, 2 changer transitions 0/309 dead transitions. [2024-10-24 15:05:16,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 309 transitions, 688 flow [2024-10-24 15:05:16,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 15:05:16,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 15:05:16,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 913 transitions. [2024-10-24 15:05:16,140 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8977384464110127 [2024-10-24 15:05:16,140 INFO L175 Difference]: Start difference. First operand has 305 places, 308 transitions, 648 flow. Second operand 3 states and 913 transitions. [2024-10-24 15:05:16,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 309 transitions, 688 flow [2024-10-24 15:05:16,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 309 transitions, 676 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-24 15:05:16,144 INFO L231 Difference]: Finished difference. Result has 303 places, 309 transitions, 650 flow [2024-10-24 15:05:16,144 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=650, PETRI_PLACES=303, PETRI_TRANSITIONS=309} [2024-10-24 15:05:16,145 INFO L277 CegarLoopForPetriNet]: 313 programPoint places, -10 predicate places. [2024-10-24 15:05:16,145 INFO L471 AbstractCegarLoop]: Abstraction has has 303 places, 309 transitions, 650 flow [2024-10-24 15:05:16,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 300.0) internal successors, (900), 3 states have internal predecessors, (900), 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) [2024-10-24 15:05:16,146 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:05:16,146 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] [2024-10-24 15:05:16,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-24 15:05:16,147 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-24 15:05:16,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:05:16,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1049774545, now seen corresponding path program 1 times [2024-10-24 15:05:16,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:05:16,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793342824] [2024-10-24 15:05:16,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:16,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:05:16,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:05:16,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:05:16,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:05:16,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793342824] [2024-10-24 15:05:16,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793342824] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 15:05:16,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952189486] [2024-10-24 15:05:16,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:16,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 15:05:16,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 15:05:16,195 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 15:05:16,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-24 15:05:16,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:05:16,280 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 15:05:16,281 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 15:05:16,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 15:05:16,288 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 15:05:16,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952189486] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:05:16,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 15:05:16,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-10-24 15:05:16,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540143858] [2024-10-24 15:05:16,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:05:16,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 15:05:16,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:05:16,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 15:05:16,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 15:05:16,309 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 297 out of 339 [2024-10-24 15:05:16,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 309 transitions, 650 flow. Second operand has 3 states, 3 states have (on average 299.3333333333333) internal successors, (898), 3 states have internal predecessors, (898), 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) [2024-10-24 15:05:16,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:05:16,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 297 of 339 [2024-10-24 15:05:16,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:05:17,469 INFO L124 PetriNetUnfolderBase]: 1136/6787 cut-off events. [2024-10-24 15:05:17,469 INFO L125 PetriNetUnfolderBase]: For 644/644 co-relation queries the response was YES. [2024-10-24 15:05:17,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8403 conditions, 6787 events. 1136/6787 cut-off events. For 644/644 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 71357 event pairs, 690 based on Foata normal form. 40/5841 useless extension candidates. Maximal degree in co-relation 8355. Up to 1091 conditions per place. [2024-10-24 15:05:17,600 INFO L140 encePairwiseOnDemand]: 336/339 looper letters, 27 selfloop transitions, 2 changer transitions 0/319 dead transitions. [2024-10-24 15:05:17,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 319 transitions, 743 flow [2024-10-24 15:05:17,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 15:05:17,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 15:05:17,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 921 transitions. [2024-10-24 15:05:17,604 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9056047197640118 [2024-10-24 15:05:17,604 INFO L175 Difference]: Start difference. First operand has 303 places, 309 transitions, 650 flow. Second operand 3 states and 921 transitions. [2024-10-24 15:05:17,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 319 transitions, 743 flow [2024-10-24 15:05:17,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 319 transitions, 741 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 15:05:17,612 INFO L231 Difference]: Finished difference. Result has 305 places, 310 transitions, 660 flow [2024-10-24 15:05:17,612 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=660, PETRI_PLACES=305, PETRI_TRANSITIONS=310} [2024-10-24 15:05:17,613 INFO L277 CegarLoopForPetriNet]: 313 programPoint places, -8 predicate places. [2024-10-24 15:05:17,613 INFO L471 AbstractCegarLoop]: Abstraction has has 305 places, 310 transitions, 660 flow [2024-10-24 15:05:17,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 299.3333333333333) internal successors, (898), 3 states have internal predecessors, (898), 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) [2024-10-24 15:05:17,613 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:05:17,613 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] [2024-10-24 15:05:17,631 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-24 15:05:17,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 15:05:17,815 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-24 15:05:17,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:05:17,815 INFO L85 PathProgramCache]: Analyzing trace with hash -433069135, now seen corresponding path program 1 times [2024-10-24 15:05:17,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:05:17,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735369826] [2024-10-24 15:05:17,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:17,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:05:17,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:05:17,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:05:17,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:05:17,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735369826] [2024-10-24 15:05:17,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735369826] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 15:05:17,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639894666] [2024-10-24 15:05:17,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:17,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 15:05:17,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 15:05:17,883 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 15:05:17,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-24 15:05:17,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:05:17,979 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 15:05:17,980 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 15:05:18,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:05:18,005 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 15:05:18,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:05:18,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639894666] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 15:05:18,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 15:05:18,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-24 15:05:18,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447062894] [2024-10-24 15:05:18,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 15:05:18,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 15:05:18,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:05:18,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 15:05:18,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-24 15:05:18,117 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 339 [2024-10-24 15:05:18,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 310 transitions, 660 flow. Second operand has 10 states, 10 states have (on average 296.9) internal successors, (2969), 10 states have internal predecessors, (2969), 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) [2024-10-24 15:05:18,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:05:18,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 339 [2024-10-24 15:05:18,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:05:18,732 INFO L124 PetriNetUnfolderBase]: 366/3162 cut-off events. [2024-10-24 15:05:18,733 INFO L125 PetriNetUnfolderBase]: For 281/281 co-relation queries the response was YES. [2024-10-24 15:05:18,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3641 conditions, 3162 events. 366/3162 cut-off events. For 281/281 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 27214 event pairs, 204 based on Foata normal form. 2/2742 useless extension candidates. Maximal degree in co-relation 3545. Up to 330 conditions per place. [2024-10-24 15:05:18,794 INFO L140 encePairwiseOnDemand]: 333/339 looper letters, 20 selfloop transitions, 9 changer transitions 0/318 dead transitions. [2024-10-24 15:05:18,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 318 transitions, 736 flow [2024-10-24 15:05:18,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 15:05:18,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-24 15:05:18,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2686 transitions. [2024-10-24 15:05:18,798 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8803670927564733 [2024-10-24 15:05:18,798 INFO L175 Difference]: Start difference. First operand has 305 places, 310 transitions, 660 flow. Second operand 9 states and 2686 transitions. [2024-10-24 15:05:18,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 318 transitions, 736 flow [2024-10-24 15:05:18,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 318 transitions, 734 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 15:05:18,803 INFO L231 Difference]: Finished difference. Result has 315 places, 316 transitions, 708 flow [2024-10-24 15:05:18,804 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=708, PETRI_PLACES=315, PETRI_TRANSITIONS=316} [2024-10-24 15:05:18,804 INFO L277 CegarLoopForPetriNet]: 313 programPoint places, 2 predicate places. [2024-10-24 15:05:18,804 INFO L471 AbstractCegarLoop]: Abstraction has has 315 places, 316 transitions, 708 flow [2024-10-24 15:05:18,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 296.9) internal successors, (2969), 10 states have internal predecessors, (2969), 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) [2024-10-24 15:05:18,805 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:05:18,806 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:05:18,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-24 15:05:19,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 15:05:19,010 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-24 15:05:19,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:05:19,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1329744367, now seen corresponding path program 2 times [2024-10-24 15:05:19,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:05:19,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934473869] [2024-10-24 15:05:19,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:19,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:05:19,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:05:19,133 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:05:19,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:05:19,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934473869] [2024-10-24 15:05:19,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934473869] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 15:05:19,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484905962] [2024-10-24 15:05:19,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 15:05:19,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 15:05:19,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 15:05:19,153 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 15:05:19,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-24 15:05:19,257 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 15:05:19,257 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 15:05:19,258 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-24 15:05:19,261 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 15:05:19,333 INFO L378 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 15 treesize of output 11 [2024-10-24 15:05:19,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2024-10-24 15:05:19,375 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 15:05:19,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2024-10-24 15:05:19,411 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 15:05:19,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2024-10-24 15:05:19,435 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-10-24 15:05:19,435 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 15:05:19,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484905962] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:05:19,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 15:05:19,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2024-10-24 15:05:19,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435912559] [2024-10-24 15:05:19,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:05:19,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 15:05:19,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:05:19,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 15:05:19,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-10-24 15:05:19,694 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 339 [2024-10-24 15:05:19,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 316 transitions, 708 flow. Second operand has 6 states, 6 states have (on average 290.3333333333333) internal successors, (1742), 6 states have internal predecessors, (1742), 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) [2024-10-24 15:05:19,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:05:19,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 339 [2024-10-24 15:05:19,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:05:21,580 INFO L124 PetriNetUnfolderBase]: 1957/10246 cut-off events. [2024-10-24 15:05:21,581 INFO L125 PetriNetUnfolderBase]: For 1260/1260 co-relation queries the response was YES. [2024-10-24 15:05:21,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13299 conditions, 10246 events. 1957/10246 cut-off events. For 1260/1260 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 114534 event pairs, 609 based on Foata normal form. 0/8928 useless extension candidates. Maximal degree in co-relation 13188. Up to 983 conditions per place. [2024-10-24 15:05:21,805 INFO L140 encePairwiseOnDemand]: 333/339 looper letters, 58 selfloop transitions, 6 changer transitions 0/351 dead transitions. [2024-10-24 15:05:21,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 351 transitions, 966 flow [2024-10-24 15:05:21,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 15:05:21,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 15:05:21,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1792 transitions. [2024-10-24 15:05:21,813 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8810226155358899 [2024-10-24 15:05:21,813 INFO L175 Difference]: Start difference. First operand has 315 places, 316 transitions, 708 flow. Second operand 6 states and 1792 transitions. [2024-10-24 15:05:21,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 351 transitions, 966 flow [2024-10-24 15:05:21,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 351 transitions, 960 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-24 15:05:21,833 INFO L231 Difference]: Finished difference. Result has 318 places, 315 transitions, 712 flow [2024-10-24 15:05:21,837 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=700, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=712, PETRI_PLACES=318, PETRI_TRANSITIONS=315} [2024-10-24 15:05:21,838 INFO L277 CegarLoopForPetriNet]: 313 programPoint places, 5 predicate places. [2024-10-24 15:05:21,838 INFO L471 AbstractCegarLoop]: Abstraction has has 318 places, 315 transitions, 712 flow [2024-10-24 15:05:21,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 290.3333333333333) internal successors, (1742), 6 states have internal predecessors, (1742), 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) [2024-10-24 15:05:21,839 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:05:21,839 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:05:21,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-24 15:05:22,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 15:05:22,040 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-24 15:05:22,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:05:22,042 INFO L85 PathProgramCache]: Analyzing trace with hash 952628931, now seen corresponding path program 1 times [2024-10-24 15:05:22,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:05:22,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961408015] [2024-10-24 15:05:22,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:22,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:05:22,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:05:22,211 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-10-24 15:05:22,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:05:22,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961408015] [2024-10-24 15:05:22,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961408015] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 15:05:22,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585655148] [2024-10-24 15:05:22,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:22,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 15:05:22,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 15:05:22,214 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 15:05:22,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-24 15:05:22,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:05:22,332 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 15:05:22,334 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 15:05:22,390 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-10-24 15:05:22,390 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 15:05:22,474 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-10-24 15:05:22,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585655148] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 15:05:22,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 15:05:22,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-24 15:05:22,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196464786] [2024-10-24 15:05:22,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 15:05:22,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-24 15:05:22,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:05:22,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-24 15:05:22,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-10-24 15:05:22,542 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 339 [2024-10-24 15:05:22,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 315 transitions, 712 flow. Second operand has 15 states, 15 states have (on average 297.26666666666665) internal successors, (4459), 15 states have internal predecessors, (4459), 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) [2024-10-24 15:05:22,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:05:22,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 339 [2024-10-24 15:05:22,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:05:23,251 INFO L124 PetriNetUnfolderBase]: 365/3201 cut-off events. [2024-10-24 15:05:23,251 INFO L125 PetriNetUnfolderBase]: For 301/301 co-relation queries the response was YES. [2024-10-24 15:05:23,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3739 conditions, 3201 events. 365/3201 cut-off events. For 301/301 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 27176 event pairs, 204 based on Foata normal form. 3/2784 useless extension candidates. Maximal degree in co-relation 3559. Up to 330 conditions per place. [2024-10-24 15:05:23,314 INFO L140 encePairwiseOnDemand]: 333/339 looper letters, 23 selfloop transitions, 18 changer transitions 0/329 dead transitions. [2024-10-24 15:05:23,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 329 transitions, 862 flow [2024-10-24 15:05:23,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-24 15:05:23,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-24 15:05:23,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5354 transitions. [2024-10-24 15:05:23,320 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8774172402490986 [2024-10-24 15:05:23,320 INFO L175 Difference]: Start difference. First operand has 318 places, 315 transitions, 712 flow. Second operand 18 states and 5354 transitions. [2024-10-24 15:05:23,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 329 transitions, 862 flow [2024-10-24 15:05:23,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 329 transitions, 850 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-24 15:05:23,326 INFO L231 Difference]: Finished difference. Result has 334 places, 325 transitions, 806 flow [2024-10-24 15:05:23,327 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=700, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=806, PETRI_PLACES=334, PETRI_TRANSITIONS=325} [2024-10-24 15:05:23,327 INFO L277 CegarLoopForPetriNet]: 313 programPoint places, 21 predicate places. [2024-10-24 15:05:23,327 INFO L471 AbstractCegarLoop]: Abstraction has has 334 places, 325 transitions, 806 flow [2024-10-24 15:05:23,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 297.26666666666665) internal successors, (4459), 15 states have internal predecessors, (4459), 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) [2024-10-24 15:05:23,329 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:05:23,329 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:05:23,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-24 15:05:23,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-10-24 15:05:23,534 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-24 15:05:23,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:05:23,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1109753564, now seen corresponding path program 2 times [2024-10-24 15:05:23,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:05:23,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184566184] [2024-10-24 15:05:23,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:23,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:05:23,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:05:23,577 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 15:05:23,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:05:23,627 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 15:05:23,628 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 15:05:23,628 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2024-10-24 15:05:23,628 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2024-10-24 15:05:23,628 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2024-10-24 15:05:23,628 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2024-10-24 15:05:23,629 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2024-10-24 15:05:23,629 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2024-10-24 15:05:23,629 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2024-10-24 15:05:23,629 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2024-10-24 15:05:23,629 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2024-10-24 15:05:23,629 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2024-10-24 15:05:23,629 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2024-10-24 15:05:23,629 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2024-10-24 15:05:23,630 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2024-10-24 15:05:23,630 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2024-10-24 15:05:23,630 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2024-10-24 15:05:23,630 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2024-10-24 15:05:23,630 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2024-10-24 15:05:23,630 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2024-10-24 15:05:23,630 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2024-10-24 15:05:23,631 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2024-10-24 15:05:23,631 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2024-10-24 15:05:23,631 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2024-10-24 15:05:23,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-24 15:05:23,631 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1] [2024-10-24 15:05:23,633 WARN L239 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-24 15:05:23,633 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-10-24 15:05:23,680 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 15:05:23,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 378 places, 410 transitions, 860 flow [2024-10-24 15:05:23,754 INFO L124 PetriNetUnfolderBase]: 48/463 cut-off events. [2024-10-24 15:05:23,754 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-10-24 15:05:23,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 489 conditions, 463 events. 48/463 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1743 event pairs, 0 based on Foata normal form. 0/388 useless extension candidates. Maximal degree in co-relation 394. Up to 12 conditions per place. [2024-10-24 15:05:23,762 INFO L82 GeneralOperation]: Start removeDead. Operand has 378 places, 410 transitions, 860 flow [2024-10-24 15:05:23,766 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 378 places, 410 transitions, 860 flow [2024-10-24 15:05:23,768 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 15:05:23,768 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;@1a7842be, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 15:05:23,768 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-10-24 15:05:23,771 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 15:05:23,772 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-10-24 15:05:23,772 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 15:05:23,772 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:05:23,772 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] [2024-10-24 15:05:23,772 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2024-10-24 15:05:23,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:05:23,772 INFO L85 PathProgramCache]: Analyzing trace with hash 735980218, now seen corresponding path program 1 times [2024-10-24 15:05:23,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:05:23,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294955883] [2024-10-24 15:05:23,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:23,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:05:23,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:05:23,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:05:23,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:05:23,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294955883] [2024-10-24 15:05:23,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294955883] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:05:23,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:05:23,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 15:05:23,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062492262] [2024-10-24 15:05:23,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:05:23,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 15:05:23,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:05:23,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 15:05:23,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-24 15:05:24,431 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 334 out of 410 [2024-10-24 15:05:24,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 410 transitions, 860 flow. Second operand has 6 states, 6 states have (on average 335.5) internal successors, (2013), 6 states have internal predecessors, (2013), 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) [2024-10-24 15:05:24,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:05:24,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 334 of 410 [2024-10-24 15:05:24,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand