./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-pthread.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version a046e57d 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-pthread.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 991dbc557cd31e595edd52677120ba8d8af2b607a4ab228e6500c72ebba22de0 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 09:29:49,302 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 09:29:49,393 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-13 09:29:49,397 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 09:29:49,399 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 09:29:49,422 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 09:29:49,423 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 09:29:49,423 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 09:29:49,424 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 09:29:49,424 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 09:29:49,425 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 09:29:49,425 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 09:29:49,426 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 09:29:49,426 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 09:29:49,426 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 09:29:49,427 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 09:29:49,427 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 09:29:49,427 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 09:29:49,428 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 09:29:49,428 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 09:29:49,428 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 09:29:49,429 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 09:29:49,429 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-13 09:29:49,430 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 09:29:49,430 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 09:29:49,430 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 09:29:49,431 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 09:29:49,431 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 09:29:49,431 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 09:29:49,432 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 09:29:49,432 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 09:29:49,432 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 09:29:49,433 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 09:29:49,433 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 09:29:49,433 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 09:29:49,434 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 09:29:49,434 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 09:29:49,434 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 09:29:49,435 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 09:29:49,435 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 09:29:49,435 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 09:29:49,436 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 991dbc557cd31e595edd52677120ba8d8af2b607a4ab228e6500c72ebba22de0 [2024-10-13 09:29:49,721 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 09:29:49,750 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 09:29:49,753 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 09:29:49,755 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 09:29:49,756 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 09:29:49,757 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/11_fmaxsymopt-pthread.i [2024-10-13 09:29:51,300 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 09:29:51,553 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 09:29:51,554 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/11_fmaxsymopt-pthread.i [2024-10-13 09:29:51,574 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79b1f835a/4edf9b0c82c04aa0ae8628c47983d954/FLAG3a9383389 [2024-10-13 09:29:51,586 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79b1f835a/4edf9b0c82c04aa0ae8628c47983d954 [2024-10-13 09:29:51,589 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 09:29:51,590 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 09:29:51,591 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 09:29:51,592 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 09:29:51,597 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 09:29:51,597 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:29:51" (1/1) ... [2024-10-13 09:29:51,598 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1613a293 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:29:51, skipping insertion in model container [2024-10-13 09:29:51,598 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:29:51" (1/1) ... [2024-10-13 09:29:51,643 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 09:29:52,048 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 09:29:52,099 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 09:29:52,159 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 09:29:52,232 INFO L204 MainTranslator]: Completed translation [2024-10-13 09:29:52,233 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:29:52 WrapperNode [2024-10-13 09:29:52,233 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 09:29:52,234 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 09:29:52,234 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 09:29:52,234 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 09:29:52,242 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:29:52" (1/1) ... [2024-10-13 09:29:52,266 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:29:52" (1/1) ... [2024-10-13 09:29:52,294 INFO L138 Inliner]: procedures = 164, calls = 29, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 117 [2024-10-13 09:29:52,297 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 09:29:52,298 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 09:29:52,298 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 09:29:52,298 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 09:29:52,307 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:29:52" (1/1) ... [2024-10-13 09:29:52,308 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:29:52" (1/1) ... [2024-10-13 09:29:52,311 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:29:52" (1/1) ... [2024-10-13 09:29:52,315 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:29:52" (1/1) ... [2024-10-13 09:29:52,325 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:29:52" (1/1) ... [2024-10-13 09:29:52,329 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:29:52" (1/1) ... [2024-10-13 09:29:52,334 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:29:52" (1/1) ... [2024-10-13 09:29:52,339 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:29:52" (1/1) ... [2024-10-13 09:29:52,342 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 09:29:52,347 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 09:29:52,349 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 09:29:52,349 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 09:29:52,350 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:29:52" (1/1) ... [2024-10-13 09:29:52,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 09:29:52,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:29:52,393 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) [2024-10-13 09:29:52,398 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 [2024-10-13 09:29:52,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-13 09:29:52,445 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-13 09:29:52,445 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-13 09:29:52,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-13 09:29:52,445 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-13 09:29:52,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 09:29:52,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-13 09:29:52,446 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-13 09:29:52,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 09:29:52,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 09:29:52,448 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 09:29:52,567 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 09:29:52,570 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 09:29:52,869 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 09:29:52,869 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 09:29:52,897 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 09:29:52,898 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-13 09:29:52,898 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:29:52 BoogieIcfgContainer [2024-10-13 09:29:52,899 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 09:29:52,901 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 09:29:52,901 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 09:29:52,904 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 09:29:52,905 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:29:51" (1/3) ... [2024-10-13 09:29:52,906 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fbf7d71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:29:52, skipping insertion in model container [2024-10-13 09:29:52,906 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:29:52" (2/3) ... [2024-10-13 09:29:52,907 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fbf7d71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:29:52, skipping insertion in model container [2024-10-13 09:29:52,907 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:29:52" (3/3) ... [2024-10-13 09:29:52,908 INFO L112 eAbstractionObserver]: Analyzing ICFG 11_fmaxsymopt-pthread.i [2024-10-13 09:29:52,927 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 09:29:52,928 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-10-13 09:29:52,928 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 09:29:53,029 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 09:29:53,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 130 transitions, 264 flow [2024-10-13 09:29:53,145 INFO L124 PetriNetUnfolderBase]: 12/139 cut-off events. [2024-10-13 09:29:53,147 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 09:29:53,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 139 events. 12/139 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 183 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 85. Up to 4 conditions per place. [2024-10-13 09:29:53,155 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 130 transitions, 264 flow [2024-10-13 09:29:53,161 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 130 transitions, 264 flow [2024-10-13 09:29:53,175 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 09:29:53,184 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;@51a9f66c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 09:29:53,184 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-10-13 09:29:53,206 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 09:29:53,207 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-10-13 09:29:53,207 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 09:29:53,207 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:29:53,208 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] [2024-10-13 09:29:53,209 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)] === [2024-10-13 09:29:53,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:29:53,214 INFO L85 PathProgramCache]: Analyzing trace with hash 221156214, now seen corresponding path program 1 times [2024-10-13 09:29:53,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:29:53,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603912219] [2024-10-13 09:29:53,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:29:53,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:29:53,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:29:54,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:29:54,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:29:54,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603912219] [2024-10-13 09:29:54,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603912219] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:29:54,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:29:54,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 09:29:54,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207871312] [2024-10-13 09:29:54,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:29:54,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 09:29:54,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:29:54,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 09:29:54,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-13 09:29:54,390 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 130 [2024-10-13 09:29:54,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 130 transitions, 264 flow. Second operand has 6 states, 6 states have (on average 101.5) internal successors, (609), 6 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:29:54,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:29:54,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 130 [2024-10-13 09:29:54,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:29:54,517 INFO L124 PetriNetUnfolderBase]: 5/121 cut-off events. [2024-10-13 09:29:54,517 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-13 09:29:54,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 121 events. 5/121 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 128 event pairs, 0 based on Foata normal form. 15/125 useless extension candidates. Maximal degree in co-relation 82. Up to 16 conditions per place. [2024-10-13 09:29:54,519 INFO L140 encePairwiseOnDemand]: 117/130 looper letters, 15 selfloop transitions, 5 changer transitions 0/117 dead transitions. [2024-10-13 09:29:54,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 117 transitions, 278 flow [2024-10-13 09:29:54,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 09:29:54,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 09:29:54,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 628 transitions. [2024-10-13 09:29:54,536 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8051282051282052 [2024-10-13 09:29:54,541 INFO L175 Difference]: Start difference. First operand has 122 places, 130 transitions, 264 flow. Second operand 6 states and 628 transitions. [2024-10-13 09:29:54,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 117 transitions, 278 flow [2024-10-13 09:29:54,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 117 transitions, 278 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 09:29:54,549 INFO L231 Difference]: Finished difference. Result has 120 places, 117 transitions, 248 flow [2024-10-13 09:29:54,555 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=248, PETRI_PLACES=120, PETRI_TRANSITIONS=117} [2024-10-13 09:29:54,559 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, -2 predicate places. [2024-10-13 09:29:54,562 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 117 transitions, 248 flow [2024-10-13 09:29:54,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 101.5) internal successors, (609), 6 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:29:54,563 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:29:54,564 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] [2024-10-13 09:29:54,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 09:29:54,564 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)] === [2024-10-13 09:29:54,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:29:54,566 INFO L85 PathProgramCache]: Analyzing trace with hash -497310968, now seen corresponding path program 1 times [2024-10-13 09:29:54,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:29:54,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269662759] [2024-10-13 09:29:54,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:29:54,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:29:54,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:29:54,629 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 09:29:54,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:29:54,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269662759] [2024-10-13 09:29:54,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269662759] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:29:54,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:29:54,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 09:29:54,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734701901] [2024-10-13 09:29:54,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:29:54,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:29:54,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:29:54,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:29:54,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:29:54,680 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 130 [2024-10-13 09:29:54,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 117 transitions, 248 flow. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:29:54,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:29:54,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 130 [2024-10-13 09:29:54,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:29:54,732 INFO L124 PetriNetUnfolderBase]: 5/133 cut-off events. [2024-10-13 09:29:54,733 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-13 09:29:54,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 133 events. 5/133 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 124 event pairs, 0 based on Foata normal form. 1/124 useless extension candidates. Maximal degree in co-relation 98. Up to 11 conditions per place. [2024-10-13 09:29:54,734 INFO L140 encePairwiseOnDemand]: 127/130 looper letters, 9 selfloop transitions, 2 changer transitions 0/118 dead transitions. [2024-10-13 09:29:54,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 118 transitions, 274 flow [2024-10-13 09:29:54,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:29:54,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:29:54,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 345 transitions. [2024-10-13 09:29:54,740 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8846153846153846 [2024-10-13 09:29:54,741 INFO L175 Difference]: Start difference. First operand has 120 places, 117 transitions, 248 flow. Second operand 3 states and 345 transitions. [2024-10-13 09:29:54,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 118 transitions, 274 flow [2024-10-13 09:29:54,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 118 transitions, 262 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 09:29:54,748 INFO L231 Difference]: Finished difference. Result has 118 places, 118 transitions, 250 flow [2024-10-13 09:29:54,748 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=118, PETRI_TRANSITIONS=118} [2024-10-13 09:29:54,749 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, -4 predicate places. [2024-10-13 09:29:54,749 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 118 transitions, 250 flow [2024-10-13 09:29:54,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:29:54,750 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:29:54,750 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] [2024-10-13 09:29:54,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 09:29:54,752 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)] === [2024-10-13 09:29:54,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:29:54,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1275824240, now seen corresponding path program 1 times [2024-10-13 09:29:54,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:29:54,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274090137] [2024-10-13 09:29:54,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:29:54,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:29:54,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:29:54,909 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 09:29:54,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:29:54,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274090137] [2024-10-13 09:29:54,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274090137] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:29:54,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071374648] [2024-10-13 09:29:54,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:29:54,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:29:54,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:29:54,916 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) [2024-10-13 09:29:54,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 09:29:55,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:29:55,010 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 09:29:55,018 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:29:55,104 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 09:29:55,107 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 09:29:55,169 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 09:29:55,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071374648] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 09:29:55,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 09:29:55,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-13 09:29:55,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125749510] [2024-10-13 09:29:55,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 09:29:55,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 09:29:55,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:29:55,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 09:29:55,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-13 09:29:55,302 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 130 [2024-10-13 09:29:55,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 118 transitions, 250 flow. Second operand has 10 states, 10 states have (on average 109.9) internal successors, (1099), 10 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:29:55,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:29:55,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 130 [2024-10-13 09:29:55,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:29:55,421 INFO L124 PetriNetUnfolderBase]: 5/148 cut-off events. [2024-10-13 09:29:55,422 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 09:29:55,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 148 events. 5/148 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 98 event pairs, 0 based on Foata normal form. 2/140 useless extension candidates. Maximal degree in co-relation 133. Up to 11 conditions per place. [2024-10-13 09:29:55,425 INFO L140 encePairwiseOnDemand]: 124/130 looper letters, 13 selfloop transitions, 9 changer transitions 0/126 dead transitions. [2024-10-13 09:29:55,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 126 transitions, 312 flow [2024-10-13 09:29:55,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 09:29:55,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 09:29:55,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 996 transitions. [2024-10-13 09:29:55,431 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8512820512820513 [2024-10-13 09:29:55,432 INFO L175 Difference]: Start difference. First operand has 118 places, 118 transitions, 250 flow. Second operand 9 states and 996 transitions. [2024-10-13 09:29:55,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 126 transitions, 312 flow [2024-10-13 09:29:55,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 126 transitions, 310 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 09:29:55,437 INFO L231 Difference]: Finished difference. Result has 128 places, 124 transitions, 298 flow [2024-10-13 09:29:55,438 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=298, PETRI_PLACES=128, PETRI_TRANSITIONS=124} [2024-10-13 09:29:55,439 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 6 predicate places. [2024-10-13 09:29:55,439 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 124 transitions, 298 flow [2024-10-13 09:29:55,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 109.9) internal successors, (1099), 10 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:29:55,441 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:29:55,441 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] [2024-10-13 09:29:55,458 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 09:29:55,642 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 [2024-10-13 09:29:55,642 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)] === [2024-10-13 09:29:55,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:29:55,643 INFO L85 PathProgramCache]: Analyzing trace with hash -401858704, now seen corresponding path program 2 times [2024-10-13 09:29:55,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:29:55,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295291823] [2024-10-13 09:29:55,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:29:55,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:29:55,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:29:55,956 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 09:29:55,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:29:55,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295291823] [2024-10-13 09:29:55,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295291823] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:29:55,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386626560] [2024-10-13 09:29:55,959 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 09:29:55,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:29:55,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:29:55,962 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) [2024-10-13 09:29:55,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 09:29:56,072 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 09:29:56,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 09:29:56,074 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 09:29:56,077 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:29:56,197 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 09:29:56,201 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 09:29:56,336 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 09:29:56,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386626560] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 09:29:56,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 09:29:56,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-13 09:29:56,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340292276] [2024-10-13 09:29:56,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 09:29:56,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 09:29:56,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:29:56,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 09:29:56,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-10-13 09:29:56,460 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 130 [2024-10-13 09:29:56,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 124 transitions, 298 flow. Second operand has 15 states, 15 states have (on average 110.06666666666666) internal successors, (1651), 15 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:29:56,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:29:56,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 130 [2024-10-13 09:29:56,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:29:56,658 INFO L124 PetriNetUnfolderBase]: 5/187 cut-off events. [2024-10-13 09:29:56,659 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-10-13 09:29:56,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 187 events. 5/187 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 99 event pairs, 0 based on Foata normal form. 3/180 useless extension candidates. Maximal degree in co-relation 186. Up to 11 conditions per place. [2024-10-13 09:29:56,661 INFO L140 encePairwiseOnDemand]: 124/130 looper letters, 16 selfloop transitions, 18 changer transitions 0/138 dead transitions. [2024-10-13 09:29:56,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 138 transitions, 440 flow [2024-10-13 09:29:56,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-13 09:29:56,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-13 09:29:56,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1981 transitions. [2024-10-13 09:29:56,667 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8465811965811966 [2024-10-13 09:29:56,667 INFO L175 Difference]: Start difference. First operand has 128 places, 124 transitions, 298 flow. Second operand 18 states and 1981 transitions. [2024-10-13 09:29:56,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 138 transitions, 440 flow [2024-10-13 09:29:56,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 138 transitions, 428 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-10-13 09:29:56,676 INFO L231 Difference]: Finished difference. Result has 148 places, 134 transitions, 398 flow [2024-10-13 09:29:56,677 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=398, PETRI_PLACES=148, PETRI_TRANSITIONS=134} [2024-10-13 09:29:56,678 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, 26 predicate places. [2024-10-13 09:29:56,679 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 134 transitions, 398 flow [2024-10-13 09:29:56,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 110.06666666666666) internal successors, (1651), 15 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:29:56,680 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:29:56,681 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] [2024-10-13 09:29:56,700 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 09:29:56,881 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 [2024-10-13 09:29:56,882 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)] === [2024-10-13 09:29:56,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:29:56,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1053688312, now seen corresponding path program 3 times [2024-10-13 09:29:56,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:29:56,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220612584] [2024-10-13 09:29:56,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:29:56,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:29:56,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:29:56,934 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 09:29:56,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:29:56,987 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 09:29:56,987 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 09:29:56,988 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2024-10-13 09:29:56,990 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2024-10-13 09:29:56,991 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2024-10-13 09:29:56,991 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2024-10-13 09:29:56,991 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2024-10-13 09:29:56,991 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2024-10-13 09:29:56,991 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2024-10-13 09:29:56,992 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2024-10-13 09:29:56,992 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2024-10-13 09:29:56,992 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2024-10-13 09:29:56,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 09:29:56,992 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-10-13 09:29:56,995 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 09:29:56,996 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-13 09:29:57,042 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 09:29:57,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 191 places, 205 transitions, 420 flow [2024-10-13 09:29:57,102 INFO L124 PetriNetUnfolderBase]: 21/225 cut-off events. [2024-10-13 09:29:57,103 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 09:29:57,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 225 events. 21/225 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 522 event pairs, 0 based on Foata normal form. 0/192 useless extension candidates. Maximal degree in co-relation 159. Up to 6 conditions per place. [2024-10-13 09:29:57,106 INFO L82 GeneralOperation]: Start removeDead. Operand has 191 places, 205 transitions, 420 flow [2024-10-13 09:29:57,108 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 191 places, 205 transitions, 420 flow [2024-10-13 09:29:57,109 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 09:29:57,110 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;@51a9f66c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 09:29:57,110 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-10-13 09:29:57,114 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 09:29:57,114 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-10-13 09:29:57,114 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 09:29:57,115 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:29:57,115 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] [2024-10-13 09:29:57,115 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)] === [2024-10-13 09:29:57,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:29:57,115 INFO L85 PathProgramCache]: Analyzing trace with hash -52521821, now seen corresponding path program 1 times [2024-10-13 09:29:57,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:29:57,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142498337] [2024-10-13 09:29:57,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:29:57,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:29:57,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:29:57,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:29:57,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:29:57,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142498337] [2024-10-13 09:29:57,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142498337] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:29:57,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:29:57,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 09:29:57,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108792568] [2024-10-13 09:29:57,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:29:57,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 09:29:57,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:29:57,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 09:29:57,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-13 09:29:57,554 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 205 [2024-10-13 09:29:57,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 205 transitions, 420 flow. Second operand has 6 states, 6 states have (on average 162.5) internal successors, (975), 6 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:29:57,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:29:57,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 205 [2024-10-13 09:29:57,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:29:57,727 INFO L124 PetriNetUnfolderBase]: 134/852 cut-off events. [2024-10-13 09:29:57,728 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-10-13 09:29:57,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1082 conditions, 852 events. 134/852 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 5370 event pairs, 72 based on Foata normal form. 162/886 useless extension candidates. Maximal degree in co-relation 385. Up to 193 conditions per place. [2024-10-13 09:29:57,735 INFO L140 encePairwiseOnDemand]: 188/205 looper letters, 24 selfloop transitions, 5 changer transitions 0/186 dead transitions. [2024-10-13 09:29:57,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 186 transitions, 440 flow [2024-10-13 09:29:57,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 09:29:57,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 09:29:57,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1007 transitions. [2024-10-13 09:29:57,738 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8186991869918699 [2024-10-13 09:29:57,738 INFO L175 Difference]: Start difference. First operand has 191 places, 205 transitions, 420 flow. Second operand 6 states and 1007 transitions. [2024-10-13 09:29:57,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 186 transitions, 440 flow [2024-10-13 09:29:57,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 186 transitions, 440 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 09:29:57,742 INFO L231 Difference]: Finished difference. Result has 187 places, 186 transitions, 392 flow [2024-10-13 09:29:57,742 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=392, PETRI_PLACES=187, PETRI_TRANSITIONS=186} [2024-10-13 09:29:57,743 INFO L277 CegarLoopForPetriNet]: 191 programPoint places, -4 predicate places. [2024-10-13 09:29:57,743 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 186 transitions, 392 flow [2024-10-13 09:29:57,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 162.5) internal successors, (975), 6 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:29:57,744 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:29:57,744 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] [2024-10-13 09:29:57,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 09:29:57,745 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)] === [2024-10-13 09:29:57,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:29:57,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1085319016, now seen corresponding path program 1 times [2024-10-13 09:29:57,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:29:57,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113302266] [2024-10-13 09:29:57,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:29:57,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:29:57,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:29:57,773 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-13 09:29:57,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:29:57,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113302266] [2024-10-13 09:29:57,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113302266] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:29:57,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:29:57,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 09:29:57,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694156409] [2024-10-13 09:29:57,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:29:57,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:29:57,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:29:57,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:29:57,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:29:57,797 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 205 [2024-10-13 09:29:57,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 186 transitions, 392 flow. Second operand has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:29:57,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:29:57,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 205 [2024-10-13 09:29:57,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:29:57,887 INFO L124 PetriNetUnfolderBase]: 45/532 cut-off events. [2024-10-13 09:29:57,888 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-10-13 09:29:57,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 620 conditions, 532 events. 45/532 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2412 event pairs, 20 based on Foata normal form. 1/472 useless extension candidates. Maximal degree in co-relation 557. Up to 56 conditions per place. [2024-10-13 09:29:57,894 INFO L140 encePairwiseOnDemand]: 202/205 looper letters, 14 selfloop transitions, 2 changer transitions 0/187 dead transitions. [2024-10-13 09:29:57,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 187 transitions, 428 flow [2024-10-13 09:29:57,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:29:57,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:29:57,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 545 transitions. [2024-10-13 09:29:57,896 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8861788617886179 [2024-10-13 09:29:57,896 INFO L175 Difference]: Start difference. First operand has 187 places, 186 transitions, 392 flow. Second operand 3 states and 545 transitions. [2024-10-13 09:29:57,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 187 transitions, 428 flow [2024-10-13 09:29:57,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 187 transitions, 416 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 09:29:57,900 INFO L231 Difference]: Finished difference. Result has 185 places, 187 transitions, 394 flow [2024-10-13 09:29:57,901 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=394, PETRI_PLACES=185, PETRI_TRANSITIONS=187} [2024-10-13 09:29:57,901 INFO L277 CegarLoopForPetriNet]: 191 programPoint places, -6 predicate places. [2024-10-13 09:29:57,902 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 187 transitions, 394 flow [2024-10-13 09:29:57,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:29:57,902 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:29:57,903 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] [2024-10-13 09:29:57,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 09:29:57,903 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)] === [2024-10-13 09:29:57,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:29:57,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1945796179, now seen corresponding path program 1 times [2024-10-13 09:29:57,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:29:57,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379508316] [2024-10-13 09:29:57,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:29:57,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:29:57,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:29:57,967 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-13 09:29:57,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:29:57,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379508316] [2024-10-13 09:29:57,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379508316] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:29:57,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343906769] [2024-10-13 09:29:57,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:29:57,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:29:57,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:29:57,972 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) [2024-10-13 09:29:57,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 09:29:58,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:29:58,061 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 09:29:58,063 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:29:58,105 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-13 09:29:58,106 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 09:29:58,157 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-13 09:29:58,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343906769] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 09:29:58,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 09:29:58,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-13 09:29:58,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416699606] [2024-10-13 09:29:58,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 09:29:58,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 09:29:58,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:29:58,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 09:29:58,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-13 09:29:58,229 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 205 [2024-10-13 09:29:58,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 187 transitions, 394 flow. Second operand has 10 states, 10 states have (on average 175.0) internal successors, (1750), 10 states have internal predecessors, (1750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:29:58,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:29:58,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 205 [2024-10-13 09:29:58,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:29:58,396 INFO L124 PetriNetUnfolderBase]: 45/547 cut-off events. [2024-10-13 09:29:58,397 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-10-13 09:29:58,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 643 conditions, 547 events. 45/547 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2389 event pairs, 20 based on Foata normal form. 2/488 useless extension candidates. Maximal degree in co-relation 592. Up to 56 conditions per place. [2024-10-13 09:29:58,421 INFO L140 encePairwiseOnDemand]: 199/205 looper letters, 18 selfloop transitions, 9 changer transitions 0/195 dead transitions. [2024-10-13 09:29:58,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 195 transitions, 466 flow [2024-10-13 09:29:58,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 09:29:58,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 09:29:58,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1586 transitions. [2024-10-13 09:29:58,426 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8596205962059621 [2024-10-13 09:29:58,426 INFO L175 Difference]: Start difference. First operand has 185 places, 187 transitions, 394 flow. Second operand 9 states and 1586 transitions. [2024-10-13 09:29:58,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 195 transitions, 466 flow [2024-10-13 09:29:58,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 195 transitions, 464 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 09:29:58,431 INFO L231 Difference]: Finished difference. Result has 195 places, 193 transitions, 442 flow [2024-10-13 09:29:58,432 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=442, PETRI_PLACES=195, PETRI_TRANSITIONS=193} [2024-10-13 09:29:58,433 INFO L277 CegarLoopForPetriNet]: 191 programPoint places, 4 predicate places. [2024-10-13 09:29:58,433 INFO L471 AbstractCegarLoop]: Abstraction has has 195 places, 193 transitions, 442 flow [2024-10-13 09:29:58,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 175.0) internal successors, (1750), 10 states have internal predecessors, (1750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:29:58,435 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:29:58,435 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] [2024-10-13 09:29:58,454 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 09:29:58,636 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 [2024-10-13 09:29:58,637 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)] === [2024-10-13 09:29:58,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:29:58,637 INFO L85 PathProgramCache]: Analyzing trace with hash -135711629, now seen corresponding path program 2 times [2024-10-13 09:29:58,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:29:58,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841594925] [2024-10-13 09:29:58,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:29:58,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:29:58,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:29:58,825 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-13 09:29:58,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:29:58,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841594925] [2024-10-13 09:29:58,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841594925] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:29:58,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449824927] [2024-10-13 09:29:58,826 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 09:29:58,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:29:58,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:29:58,828 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) [2024-10-13 09:29:58,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 09:29:58,930 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 09:29:58,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 09:29:58,931 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 09:29:58,934 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:29:59,002 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-13 09:29:59,003 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 09:29:59,114 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-13 09:29:59,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449824927] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 09:29:59,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 09:29:59,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-13 09:29:59,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806619925] [2024-10-13 09:29:59,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 09:29:59,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 09:29:59,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:29:59,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 09:29:59,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-10-13 09:29:59,216 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 205 [2024-10-13 09:29:59,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 193 transitions, 442 flow. Second operand has 15 states, 15 states have (on average 175.13333333333333) internal successors, (2627), 15 states have internal predecessors, (2627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:29:59,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:29:59,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 205 [2024-10-13 09:29:59,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:29:59,447 INFO L124 PetriNetUnfolderBase]: 45/586 cut-off events. [2024-10-13 09:29:59,447 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2024-10-13 09:29:59,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 736 conditions, 586 events. 45/586 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2391 event pairs, 20 based on Foata normal form. 3/528 useless extension candidates. Maximal degree in co-relation 554. Up to 56 conditions per place. [2024-10-13 09:29:59,452 INFO L140 encePairwiseOnDemand]: 199/205 looper letters, 21 selfloop transitions, 18 changer transitions 0/207 dead transitions. [2024-10-13 09:29:59,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 207 transitions, 594 flow [2024-10-13 09:29:59,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-13 09:29:59,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-13 09:29:59,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3156 transitions. [2024-10-13 09:29:59,458 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8552845528455284 [2024-10-13 09:29:59,458 INFO L175 Difference]: Start difference. First operand has 195 places, 193 transitions, 442 flow. Second operand 18 states and 3156 transitions. [2024-10-13 09:29:59,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 207 transitions, 594 flow [2024-10-13 09:29:59,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 207 transitions, 582 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-10-13 09:29:59,484 INFO L231 Difference]: Finished difference. Result has 215 places, 203 transitions, 542 flow [2024-10-13 09:29:59,485 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=542, PETRI_PLACES=215, PETRI_TRANSITIONS=203} [2024-10-13 09:29:59,485 INFO L277 CegarLoopForPetriNet]: 191 programPoint places, 24 predicate places. [2024-10-13 09:29:59,486 INFO L471 AbstractCegarLoop]: Abstraction has has 215 places, 203 transitions, 542 flow [2024-10-13 09:29:59,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 175.13333333333333) internal successors, (2627), 15 states have internal predecessors, (2627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:29:59,488 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:29:59,488 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] [2024-10-13 09:29:59,505 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-13 09:29:59,688 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 [2024-10-13 09:29:59,690 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)] === [2024-10-13 09:29:59,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:29:59,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1302683912, now seen corresponding path program 3 times [2024-10-13 09:29:59,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:29:59,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840472304] [2024-10-13 09:29:59,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:29:59,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:29:59,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:29:59,729 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 09:29:59,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:29:59,779 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 09:29:59,779 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 09:29:59,780 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2024-10-13 09:29:59,780 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 14 remaining) [2024-10-13 09:29:59,780 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 14 remaining) [2024-10-13 09:29:59,780 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 14 remaining) [2024-10-13 09:29:59,780 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (9 of 14 remaining) [2024-10-13 09:29:59,782 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 14 remaining) [2024-10-13 09:29:59,782 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 14 remaining) [2024-10-13 09:29:59,784 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 14 remaining) [2024-10-13 09:29:59,784 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 14 remaining) [2024-10-13 09:29:59,785 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 14 remaining) [2024-10-13 09:29:59,785 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 14 remaining) [2024-10-13 09:29:59,785 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 14 remaining) [2024-10-13 09:29:59,785 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 14 remaining) [2024-10-13 09:29:59,786 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 14 remaining) [2024-10-13 09:29:59,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-13 09:29:59,790 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-10-13 09:29:59,791 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 09:29:59,791 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-13 09:29:59,843 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 09:29:59,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 260 places, 280 transitions, 578 flow [2024-10-13 09:29:59,893 INFO L124 PetriNetUnfolderBase]: 30/311 cut-off events. [2024-10-13 09:29:59,893 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-13 09:29:59,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324 conditions, 311 events. 30/311 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 950 event pairs, 0 based on Foata normal form. 0/264 useless extension candidates. Maximal degree in co-relation 233. Up to 8 conditions per place. [2024-10-13 09:29:59,899 INFO L82 GeneralOperation]: Start removeDead. Operand has 260 places, 280 transitions, 578 flow [2024-10-13 09:29:59,902 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 260 places, 280 transitions, 578 flow [2024-10-13 09:29:59,903 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 09:29:59,904 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;@51a9f66c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 09:29:59,904 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-10-13 09:29:59,907 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 09:29:59,907 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-10-13 09:29:59,907 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 09:29:59,907 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:29:59,908 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] [2024-10-13 09:29:59,908 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)] === [2024-10-13 09:29:59,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:29:59,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1892900165, now seen corresponding path program 1 times [2024-10-13 09:29:59,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:29:59,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542124442] [2024-10-13 09:29:59,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:29:59,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:29:59,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:30:00,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:30:00,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:30:00,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542124442] [2024-10-13 09:30:00,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542124442] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:30:00,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:30:00,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 09:30:00,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249310113] [2024-10-13 09:30:00,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:30:00,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 09:30:00,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:30:00,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 09:30:00,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-13 09:30:00,279 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 280 [2024-10-13 09:30:00,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 280 transitions, 578 flow. Second operand has 6 states, 6 states have (on average 223.5) internal successors, (1341), 6 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:30:00,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:30:00,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 280 [2024-10-13 09:30:00,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:30:01,438 INFO L124 PetriNetUnfolderBase]: 2123/7992 cut-off events. [2024-10-13 09:30:01,438 INFO L125 PetriNetUnfolderBase]: For 622/622 co-relation queries the response was YES. [2024-10-13 09:30:01,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10986 conditions, 7992 events. 2123/7992 cut-off events. For 622/622 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 85750 event pairs, 1368 based on Foata normal form. 1735/8346 useless extension candidates. Maximal degree in co-relation 1867. Up to 2632 conditions per place. [2024-10-13 09:30:01,615 INFO L140 encePairwiseOnDemand]: 259/280 looper letters, 33 selfloop transitions, 5 changer transitions 0/255 dead transitions. [2024-10-13 09:30:01,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 255 transitions, 604 flow [2024-10-13 09:30:01,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 09:30:01,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 09:30:01,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1386 transitions. [2024-10-13 09:30:01,620 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.825 [2024-10-13 09:30:01,620 INFO L175 Difference]: Start difference. First operand has 260 places, 280 transitions, 578 flow. Second operand 6 states and 1386 transitions. [2024-10-13 09:30:01,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 255 transitions, 604 flow [2024-10-13 09:30:01,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 255 transitions, 602 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-13 09:30:01,628 INFO L231 Difference]: Finished difference. Result has 254 places, 255 transitions, 536 flow [2024-10-13 09:30:01,628 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=536, PETRI_PLACES=254, PETRI_TRANSITIONS=255} [2024-10-13 09:30:01,629 INFO L277 CegarLoopForPetriNet]: 260 programPoint places, -6 predicate places. [2024-10-13 09:30:01,630 INFO L471 AbstractCegarLoop]: Abstraction has has 254 places, 255 transitions, 536 flow [2024-10-13 09:30:01,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 223.5) internal successors, (1341), 6 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:30:01,631 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:30:01,631 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] [2024-10-13 09:30:01,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-13 09:30:01,631 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)] === [2024-10-13 09:30:01,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:30:01,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1279203417, now seen corresponding path program 1 times [2024-10-13 09:30:01,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:30:01,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617260421] [2024-10-13 09:30:01,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:30:01,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:30:01,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:30:01,674 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-13 09:30:01,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:30:01,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617260421] [2024-10-13 09:30:01,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617260421] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:30:01,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:30:01,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 09:30:01,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693994187] [2024-10-13 09:30:01,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:30:01,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:30:01,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:30:01,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:30:01,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:30:01,700 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 280 [2024-10-13 09:30:01,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 255 transitions, 536 flow. Second operand has 3 states, 3 states have (on average 243.33333333333334) internal successors, (730), 3 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:30:01,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:30:01,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 280 [2024-10-13 09:30:01,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:30:02,207 INFO L124 PetriNetUnfolderBase]: 345/2627 cut-off events. [2024-10-13 09:30:02,208 INFO L125 PetriNetUnfolderBase]: For 168/168 co-relation queries the response was YES. [2024-10-13 09:30:02,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3116 conditions, 2627 events. 345/2627 cut-off events. For 168/168 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 22304 event pairs, 220 based on Foata normal form. 1/2311 useless extension candidates. Maximal degree in co-relation 3052. Up to 381 conditions per place. [2024-10-13 09:30:02,237 INFO L140 encePairwiseOnDemand]: 277/280 looper letters, 19 selfloop transitions, 2 changer transitions 0/256 dead transitions. [2024-10-13 09:30:02,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 256 transitions, 582 flow [2024-10-13 09:30:02,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:30:02,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:30:02,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 745 transitions. [2024-10-13 09:30:02,239 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8869047619047619 [2024-10-13 09:30:02,239 INFO L175 Difference]: Start difference. First operand has 254 places, 255 transitions, 536 flow. Second operand 3 states and 745 transitions. [2024-10-13 09:30:02,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 256 transitions, 582 flow [2024-10-13 09:30:02,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 256 transitions, 570 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 09:30:02,245 INFO L231 Difference]: Finished difference. Result has 252 places, 256 transitions, 538 flow [2024-10-13 09:30:02,246 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=538, PETRI_PLACES=252, PETRI_TRANSITIONS=256} [2024-10-13 09:30:02,247 INFO L277 CegarLoopForPetriNet]: 260 programPoint places, -8 predicate places. [2024-10-13 09:30:02,247 INFO L471 AbstractCegarLoop]: Abstraction has has 252 places, 256 transitions, 538 flow [2024-10-13 09:30:02,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 243.33333333333334) internal successors, (730), 3 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:30:02,248 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:30:02,248 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] [2024-10-13 09:30:02,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-13 09:30:02,248 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)] === [2024-10-13 09:30:02,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:30:02,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1618866036, now seen corresponding path program 1 times [2024-10-13 09:30:02,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:30:02,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069494996] [2024-10-13 09:30:02,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:30:02,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:30:02,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:30:02,320 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-13 09:30:02,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:30:02,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069494996] [2024-10-13 09:30:02,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069494996] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:30:02,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114548876] [2024-10-13 09:30:02,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:30:02,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:30:02,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:30:02,324 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) [2024-10-13 09:30:02,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 09:30:02,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:30:02,424 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 09:30:02,426 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:30:02,456 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-13 09:30:02,457 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 09:30:02,500 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-13 09:30:02,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114548876] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 09:30:02,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 09:30:02,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-13 09:30:02,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320031129] [2024-10-13 09:30:02,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 09:30:02,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 09:30:02,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:30:02,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 09:30:02,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-13 09:30:02,565 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 280 [2024-10-13 09:30:02,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 256 transitions, 538 flow. Second operand has 10 states, 10 states have (on average 240.1) internal successors, (2401), 10 states have internal predecessors, (2401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:30:02,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:30:02,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 280 [2024-10-13 09:30:02,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:30:03,071 INFO L124 PetriNetUnfolderBase]: 345/2642 cut-off events. [2024-10-13 09:30:03,071 INFO L125 PetriNetUnfolderBase]: For 167/167 co-relation queries the response was YES. [2024-10-13 09:30:03,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3139 conditions, 2642 events. 345/2642 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 22236 event pairs, 220 based on Foata normal form. 2/2327 useless extension candidates. Maximal degree in co-relation 3087. Up to 381 conditions per place. [2024-10-13 09:30:03,104 INFO L140 encePairwiseOnDemand]: 274/280 looper letters, 23 selfloop transitions, 9 changer transitions 0/264 dead transitions. [2024-10-13 09:30:03,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 264 transitions, 620 flow [2024-10-13 09:30:03,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 09:30:03,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 09:30:03,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2176 transitions. [2024-10-13 09:30:03,110 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8634920634920635 [2024-10-13 09:30:03,111 INFO L175 Difference]: Start difference. First operand has 252 places, 256 transitions, 538 flow. Second operand 9 states and 2176 transitions. [2024-10-13 09:30:03,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 264 transitions, 620 flow [2024-10-13 09:30:03,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 264 transitions, 618 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 09:30:03,116 INFO L231 Difference]: Finished difference. Result has 262 places, 262 transitions, 586 flow [2024-10-13 09:30:03,117 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=586, PETRI_PLACES=262, PETRI_TRANSITIONS=262} [2024-10-13 09:30:03,118 INFO L277 CegarLoopForPetriNet]: 260 programPoint places, 2 predicate places. [2024-10-13 09:30:03,119 INFO L471 AbstractCegarLoop]: Abstraction has has 262 places, 262 transitions, 586 flow [2024-10-13 09:30:03,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 240.1) internal successors, (2401), 10 states have internal predecessors, (2401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:30:03,120 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:30:03,120 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] [2024-10-13 09:30:03,139 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-13 09:30:03,320 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 [2024-10-13 09:30:03,321 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)] === [2024-10-13 09:30:03,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:30:03,321 INFO L85 PathProgramCache]: Analyzing trace with hash 635137620, now seen corresponding path program 2 times [2024-10-13 09:30:03,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:30:03,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676758622] [2024-10-13 09:30:03,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:30:03,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:30:03,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:30:03,464 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-13 09:30:03,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:30:03,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676758622] [2024-10-13 09:30:03,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676758622] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:30:03,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026817226] [2024-10-13 09:30:03,465 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 09:30:03,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:30:03,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:30:03,467 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) [2024-10-13 09:30:03,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 09:30:03,588 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 09:30:03,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 09:30:03,590 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 09:30:03,594 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:30:03,675 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-13 09:30:03,676 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 09:30:03,783 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-13 09:30:03,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026817226] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 09:30:03,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 09:30:03,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-13 09:30:03,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255372700] [2024-10-13 09:30:03,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 09:30:03,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 09:30:03,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:30:03,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 09:30:03,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-10-13 09:30:03,890 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 280 [2024-10-13 09:30:03,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 262 transitions, 586 flow. Second operand has 15 states, 15 states have (on average 240.2) internal successors, (3603), 15 states have internal predecessors, (3603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:30:03,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:30:03,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 280 [2024-10-13 09:30:03,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:30:04,576 INFO L124 PetriNetUnfolderBase]: 345/2681 cut-off events. [2024-10-13 09:30:04,577 INFO L125 PetriNetUnfolderBase]: For 189/189 co-relation queries the response was YES. [2024-10-13 09:30:04,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3232 conditions, 2681 events. 345/2681 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 22262 event pairs, 220 based on Foata normal form. 3/2367 useless extension candidates. Maximal degree in co-relation 3049. Up to 381 conditions per place. [2024-10-13 09:30:04,603 INFO L140 encePairwiseOnDemand]: 274/280 looper letters, 26 selfloop transitions, 18 changer transitions 0/276 dead transitions. [2024-10-13 09:30:04,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 276 transitions, 748 flow [2024-10-13 09:30:04,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-13 09:30:04,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-13 09:30:04,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4331 transitions. [2024-10-13 09:30:04,614 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8593253968253968 [2024-10-13 09:30:04,614 INFO L175 Difference]: Start difference. First operand has 262 places, 262 transitions, 586 flow. Second operand 18 states and 4331 transitions. [2024-10-13 09:30:04,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 276 transitions, 748 flow [2024-10-13 09:30:04,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 276 transitions, 736 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-10-13 09:30:04,620 INFO L231 Difference]: Finished difference. Result has 282 places, 272 transitions, 686 flow [2024-10-13 09:30:04,621 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=686, PETRI_PLACES=282, PETRI_TRANSITIONS=272} [2024-10-13 09:30:04,622 INFO L277 CegarLoopForPetriNet]: 260 programPoint places, 22 predicate places. [2024-10-13 09:30:04,623 INFO L471 AbstractCegarLoop]: Abstraction has has 282 places, 272 transitions, 686 flow [2024-10-13 09:30:04,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 240.2) internal successors, (3603), 15 states have internal predecessors, (3603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:30:04,625 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:30:04,625 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] [2024-10-13 09:30:04,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-13 09:30:04,826 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 [2024-10-13 09:30:04,827 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)] === [2024-10-13 09:30:04,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:30:04,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1976692487, now seen corresponding path program 3 times [2024-10-13 09:30:04,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:30:04,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439015142] [2024-10-13 09:30:04,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:30:04,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:30:04,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:30:04,871 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 09:30:04,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:30:04,920 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 09:30:04,921 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 09:30:04,922 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2024-10-13 09:30:04,922 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (16 of 18 remaining) [2024-10-13 09:30:04,922 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 18 remaining) [2024-10-13 09:30:04,923 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 18 remaining) [2024-10-13 09:30:04,923 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (13 of 18 remaining) [2024-10-13 09:30:04,923 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (12 of 18 remaining) [2024-10-13 09:30:04,923 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 18 remaining) [2024-10-13 09:30:04,923 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 18 remaining) [2024-10-13 09:30:04,924 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 18 remaining) [2024-10-13 09:30:04,924 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 18 remaining) [2024-10-13 09:30:04,924 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 18 remaining) [2024-10-13 09:30:04,924 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 18 remaining) [2024-10-13 09:30:04,924 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 18 remaining) [2024-10-13 09:30:04,924 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 18 remaining) [2024-10-13 09:30:04,924 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 18 remaining) [2024-10-13 09:30:04,924 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 18 remaining) [2024-10-13 09:30:04,925 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 18 remaining) [2024-10-13 09:30:04,925 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 18 remaining) [2024-10-13 09:30:04,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-13 09:30:04,925 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-10-13 09:30:04,926 WARN L239 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 09:30:04,926 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-13 09:30:04,970 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 09:30:04,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 329 places, 355 transitions, 738 flow [2024-10-13 09:30:05,032 INFO L124 PetriNetUnfolderBase]: 39/397 cut-off events. [2024-10-13 09:30:05,032 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-13 09:30:05,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 416 conditions, 397 events. 39/397 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1395 event pairs, 0 based on Foata normal form. 0/336 useless extension candidates. Maximal degree in co-relation 319. Up to 10 conditions per place. [2024-10-13 09:30:05,041 INFO L82 GeneralOperation]: Start removeDead. Operand has 329 places, 355 transitions, 738 flow [2024-10-13 09:30:05,045 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 329 places, 355 transitions, 738 flow [2024-10-13 09:30:05,047 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 09:30:05,049 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;@51a9f66c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 09:30:05,049 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-10-13 09:30:05,052 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 09:30:05,053 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-10-13 09:30:05,053 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 09:30:05,053 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:30:05,053 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] [2024-10-13 09:30:05,053 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)] === [2024-10-13 09:30:05,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:30:05,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1005011522, now seen corresponding path program 1 times [2024-10-13 09:30:05,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:30:05,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621234764] [2024-10-13 09:30:05,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:30:05,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:30:05,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:30:05,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:30:05,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:30:05,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621234764] [2024-10-13 09:30:05,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621234764] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:30:05,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:30:05,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 09:30:05,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093832917] [2024-10-13 09:30:05,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:30:05,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 09:30:05,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:30:05,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 09:30:05,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-13 09:30:05,464 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 355 [2024-10-13 09:30:05,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 355 transitions, 738 flow. Second operand has 6 states, 6 states have (on average 284.5) internal successors, (1707), 6 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:30:05,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:30:05,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 355 [2024-10-13 09:30:05,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:30:18,330 INFO L124 PetriNetUnfolderBase]: 27422/78048 cut-off events. [2024-10-13 09:30:18,331 INFO L125 PetriNetUnfolderBase]: For 9100/9100 co-relation queries the response was YES. [2024-10-13 09:30:19,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114145 conditions, 78048 events. 27422/78048 cut-off events. For 9100/9100 co-relation queries the response was YES. Maximal size of possible extension queue 2925. Compared 1076195 event pairs, 18864 based on Foata normal form. 17951/81751 useless extension candidates. Maximal degree in co-relation 11022. Up to 32089 conditions per place. [2024-10-13 09:30:19,819 INFO L140 encePairwiseOnDemand]: 330/355 looper letters, 42 selfloop transitions, 5 changer transitions 0/324 dead transitions. [2024-10-13 09:30:19,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 324 transitions, 770 flow [2024-10-13 09:30:19,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 09:30:19,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 09:30:19,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1765 transitions. [2024-10-13 09:30:19,823 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8286384976525821 [2024-10-13 09:30:19,823 INFO L175 Difference]: Start difference. First operand has 329 places, 355 transitions, 738 flow. Second operand 6 states and 1765 transitions. [2024-10-13 09:30:19,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 324 transitions, 770 flow [2024-10-13 09:30:19,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 324 transitions, 764 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-10-13 09:30:19,835 INFO L231 Difference]: Finished difference. Result has 321 places, 324 transitions, 680 flow [2024-10-13 09:30:19,836 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=355, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=680, PETRI_PLACES=321, PETRI_TRANSITIONS=324} [2024-10-13 09:30:19,838 INFO L277 CegarLoopForPetriNet]: 329 programPoint places, -8 predicate places. [2024-10-13 09:30:19,838 INFO L471 AbstractCegarLoop]: Abstraction has has 321 places, 324 transitions, 680 flow [2024-10-13 09:30:19,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 284.5) internal successors, (1707), 6 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:30:19,839 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:30:19,839 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] [2024-10-13 09:30:19,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-13 09:30:19,840 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-13 09:30:19,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:30:19,841 INFO L85 PathProgramCache]: Analyzing trace with hash -2046493159, now seen corresponding path program 1 times [2024-10-13 09:30:19,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:30:19,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773635629] [2024-10-13 09:30:19,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:30:19,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:30:19,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:30:19,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:30:19,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:30:19,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773635629] [2024-10-13 09:30:19,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773635629] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:30:19,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:30:19,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 09:30:19,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276965519] [2024-10-13 09:30:19,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:30:19,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:30:19,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:30:19,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:30:19,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:30:19,947 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 355 [2024-10-13 09:30:19,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 324 transitions, 680 flow. Second operand has 3 states, 3 states have (on average 308.0) internal successors, (924), 3 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:30:19,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:30:19,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 355 [2024-10-13 09:30:19,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:30:22,119 INFO L124 PetriNetUnfolderBase]: 2345/13602 cut-off events. [2024-10-13 09:30:22,120 INFO L125 PetriNetUnfolderBase]: For 1218/1218 co-relation queries the response was YES. [2024-10-13 09:30:22,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16592 conditions, 13602 events. 2345/13602 cut-off events. For 1218/1218 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 163680 event pairs, 1720 based on Foata normal form. 1/12006 useless extension candidates. Maximal degree in co-relation 16527. Up to 2506 conditions per place. [2024-10-13 09:30:22,348 INFO L140 encePairwiseOnDemand]: 352/355 looper letters, 24 selfloop transitions, 2 changer transitions 0/325 dead transitions. [2024-10-13 09:30:22,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 325 transitions, 736 flow [2024-10-13 09:30:22,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:30:22,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:30:22,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 945 transitions. [2024-10-13 09:30:22,351 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8873239436619719 [2024-10-13 09:30:22,351 INFO L175 Difference]: Start difference. First operand has 321 places, 324 transitions, 680 flow. Second operand 3 states and 945 transitions. [2024-10-13 09:30:22,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 325 transitions, 736 flow [2024-10-13 09:30:22,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 325 transitions, 724 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 09:30:22,362 INFO L231 Difference]: Finished difference. Result has 319 places, 325 transitions, 682 flow [2024-10-13 09:30:22,362 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=355, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=682, PETRI_PLACES=319, PETRI_TRANSITIONS=325} [2024-10-13 09:30:22,363 INFO L277 CegarLoopForPetriNet]: 329 programPoint places, -10 predicate places. [2024-10-13 09:30:22,363 INFO L471 AbstractCegarLoop]: Abstraction has has 319 places, 325 transitions, 682 flow [2024-10-13 09:30:22,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 308.0) internal successors, (924), 3 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:30:22,364 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:30:22,364 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] [2024-10-13 09:30:22,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-13 09:30:22,364 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-13 09:30:22,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:30:22,365 INFO L85 PathProgramCache]: Analyzing trace with hash -2035898167, now seen corresponding path program 1 times [2024-10-13 09:30:22,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:30:22,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675275912] [2024-10-13 09:30:22,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:30:22,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:30:22,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:30:22,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:30:22,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:30:22,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675275912] [2024-10-13 09:30:22,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675275912] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:30:22,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605790056] [2024-10-13 09:30:22,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:30:22,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:30:22,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:30:22,439 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) [2024-10-13 09:30:22,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-13 09:30:22,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:30:22,558 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-13 09:30:22,559 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:30:22,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 09:30:22,570 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 09:30:22,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605790056] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:30:22,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 09:30:22,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-10-13 09:30:22,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544357194] [2024-10-13 09:30:22,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:30:22,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:30:22,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:30:22,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:30:22,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-13 09:30:22,596 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 355 [2024-10-13 09:30:22,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 325 transitions, 682 flow. Second operand has 3 states, 3 states have (on average 307.3333333333333) internal successors, (922), 3 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:30:22,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:30:22,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 355 [2024-10-13 09:30:22,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:30:26,430 INFO L124 PetriNetUnfolderBase]: 5494/24291 cut-off events. [2024-10-13 09:30:26,431 INFO L125 PetriNetUnfolderBase]: For 1898/1898 co-relation queries the response was YES. [2024-10-13 09:30:26,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31795 conditions, 24291 events. 5494/24291 cut-off events. For 1898/1898 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 311394 event pairs, 3970 based on Foata normal form. 156/21294 useless extension candidates. Maximal degree in co-relation 31747. Up to 5843 conditions per place. [2024-10-13 09:30:26,762 INFO L140 encePairwiseOnDemand]: 352/355 looper letters, 41 selfloop transitions, 2 changer transitions 0/341 dead transitions. [2024-10-13 09:30:26,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 341 transitions, 815 flow [2024-10-13 09:30:26,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:30:26,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:30:26,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 959 transitions. [2024-10-13 09:30:26,764 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9004694835680751 [2024-10-13 09:30:26,764 INFO L175 Difference]: Start difference. First operand has 319 places, 325 transitions, 682 flow. Second operand 3 states and 959 transitions. [2024-10-13 09:30:26,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 341 transitions, 815 flow [2024-10-13 09:30:26,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 341 transitions, 813 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 09:30:26,781 INFO L231 Difference]: Finished difference. Result has 321 places, 326 transitions, 692 flow [2024-10-13 09:30:26,782 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=355, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=692, PETRI_PLACES=321, PETRI_TRANSITIONS=326} [2024-10-13 09:30:26,782 INFO L277 CegarLoopForPetriNet]: 329 programPoint places, -8 predicate places. [2024-10-13 09:30:26,783 INFO L471 AbstractCegarLoop]: Abstraction has has 321 places, 326 transitions, 692 flow [2024-10-13 09:30:26,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 307.3333333333333) internal successors, (922), 3 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:30:26,783 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:30:26,783 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] [2024-10-13 09:30:26,801 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-13 09:30:26,984 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 [2024-10-13 09:30:26,985 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-13 09:30:26,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:30:26,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1089904491, now seen corresponding path program 1 times [2024-10-13 09:30:26,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:30:26,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952690117] [2024-10-13 09:30:26,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:30:26,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:30:27,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:30:27,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:30:27,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:30:27,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952690117] [2024-10-13 09:30:27,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952690117] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:30:27,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410292783] [2024-10-13 09:30:27,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:30:27,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:30:27,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:30:27,071 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) [2024-10-13 09:30:27,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-13 09:30:27,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:30:27,212 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 09:30:27,214 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:30:27,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:30:27,247 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 09:30:27,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:30:27,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410292783] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 09:30:27,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 09:30:27,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-13 09:30:27,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882111620] [2024-10-13 09:30:27,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 09:30:27,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 09:30:27,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:30:27,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 09:30:27,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-13 09:30:27,385 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 355 [2024-10-13 09:30:27,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 326 transitions, 692 flow. Second operand has 10 states, 10 states have (on average 304.9) internal successors, (3049), 10 states have internal predecessors, (3049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:30:27,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:30:27,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 355 [2024-10-13 09:30:27,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:30:30,014 INFO L124 PetriNetUnfolderBase]: 2346/13636 cut-off events. [2024-10-13 09:30:30,015 INFO L125 PetriNetUnfolderBase]: For 1217/1217 co-relation queries the response was YES. [2024-10-13 09:30:30,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16639 conditions, 13636 events. 2346/13636 cut-off events. For 1217/1217 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 164322 event pairs, 1720 based on Foata normal form. 2/12036 useless extension candidates. Maximal degree in co-relation 16543. Up to 2506 conditions per place. [2024-10-13 09:30:30,162 INFO L140 encePairwiseOnDemand]: 349/355 looper letters, 28 selfloop transitions, 9 changer transitions 0/334 dead transitions. [2024-10-13 09:30:30,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 334 transitions, 784 flow [2024-10-13 09:30:30,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 09:30:30,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 09:30:30,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2766 transitions. [2024-10-13 09:30:30,166 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8657276995305164 [2024-10-13 09:30:30,166 INFO L175 Difference]: Start difference. First operand has 321 places, 326 transitions, 692 flow. Second operand 9 states and 2766 transitions. [2024-10-13 09:30:30,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 334 transitions, 784 flow [2024-10-13 09:30:30,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 334 transitions, 782 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 09:30:30,176 INFO L231 Difference]: Finished difference. Result has 331 places, 332 transitions, 740 flow [2024-10-13 09:30:30,177 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=355, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=740, PETRI_PLACES=331, PETRI_TRANSITIONS=332} [2024-10-13 09:30:30,177 INFO L277 CegarLoopForPetriNet]: 329 programPoint places, 2 predicate places. [2024-10-13 09:30:30,178 INFO L471 AbstractCegarLoop]: Abstraction has has 331 places, 332 transitions, 740 flow [2024-10-13 09:30:30,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 304.9) internal successors, (3049), 10 states have internal predecessors, (3049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:30:30,179 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:30:30,179 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] [2024-10-13 09:30:30,197 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-13 09:30:30,380 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 [2024-10-13 09:30:30,380 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-13 09:30:30,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:30:30,381 INFO L85 PathProgramCache]: Analyzing trace with hash -442498709, now seen corresponding path program 2 times [2024-10-13 09:30:30,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:30:30,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996818578] [2024-10-13 09:30:30,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:30:30,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:30:30,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:30:30,544 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:30:30,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:30:30,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996818578] [2024-10-13 09:30:30,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996818578] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:30:30,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769296174] [2024-10-13 09:30:30,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 09:30:30,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:30:30,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:30:30,547 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) [2024-10-13 09:30:30,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-13 09:30:30,678 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 09:30:30,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 09:30:30,680 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-13 09:30:30,683 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:30:30,731 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 [2024-10-13 09:30:30,753 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 [2024-10-13 09:30:30,784 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 09:30:30,785 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 [2024-10-13 09:30:30,834 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 09:30:30,834 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 [2024-10-13 09:30:30,863 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-10-13 09:30:30,864 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 09:30:30,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769296174] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:30:30,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 09:30:30,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2024-10-13 09:30:30,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858478369] [2024-10-13 09:30:30,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:30:30,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 09:30:30,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:30:30,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 09:30:30,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-10-13 09:30:31,141 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 355 [2024-10-13 09:30:31,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 332 transitions, 740 flow. Second operand has 6 states, 6 states have (on average 298.3333333333333) internal successors, (1790), 6 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:30:31,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:30:31,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 355 [2024-10-13 09:30:31,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:30:37,081 INFO L124 PetriNetUnfolderBase]: 9055/35816 cut-off events. [2024-10-13 09:30:37,081 INFO L125 PetriNetUnfolderBase]: For 3834/3834 co-relation queries the response was YES. [2024-10-13 09:30:37,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48817 conditions, 35816 events. 9055/35816 cut-off events. For 3834/3834 co-relation queries the response was YES. Maximal size of possible extension queue 902. Compared 473417 event pairs, 3595 based on Foata normal form. 0/31888 useless extension candidates. Maximal degree in co-relation 48706. Up to 5325 conditions per place. [2024-10-13 09:30:37,690 INFO L140 encePairwiseOnDemand]: 349/355 looper letters, 90 selfloop transitions, 6 changer transitions 0/391 dead transitions. [2024-10-13 09:30:37,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 391 transitions, 1110 flow [2024-10-13 09:30:37,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 09:30:37,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 09:30:37,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1872 transitions. [2024-10-13 09:30:37,693 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8788732394366198 [2024-10-13 09:30:37,693 INFO L175 Difference]: Start difference. First operand has 331 places, 332 transitions, 740 flow. Second operand 6 states and 1872 transitions. [2024-10-13 09:30:37,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 391 transitions, 1110 flow [2024-10-13 09:30:37,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 391 transitions, 1104 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-13 09:30:37,707 INFO L231 Difference]: Finished difference. Result has 334 places, 331 transitions, 744 flow [2024-10-13 09:30:37,708 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=355, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=744, PETRI_PLACES=334, PETRI_TRANSITIONS=331} [2024-10-13 09:30:37,708 INFO L277 CegarLoopForPetriNet]: 329 programPoint places, 5 predicate places. [2024-10-13 09:30:37,708 INFO L471 AbstractCegarLoop]: Abstraction has has 334 places, 331 transitions, 744 flow [2024-10-13 09:30:37,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 298.3333333333333) internal successors, (1790), 6 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:30:37,709 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:30:37,710 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] [2024-10-13 09:30:37,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-13 09:30:37,910 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 [2024-10-13 09:30:37,911 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)] === [2024-10-13 09:30:37,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:30:37,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1955802234, now seen corresponding path program 1 times [2024-10-13 09:30:37,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:30:37,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538585090] [2024-10-13 09:30:37,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:30:37,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:30:37,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:30:38,322 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-10-13 09:30:38,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:30:38,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538585090] [2024-10-13 09:30:38,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538585090] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:30:38,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201713385] [2024-10-13 09:30:38,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:30:38,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:30:38,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:30:38,325 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) [2024-10-13 09:30:38,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-13 09:30:38,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:30:38,466 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 09:30:38,467 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:30:38,534 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-10-13 09:30:38,534 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 09:30:38,642 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-10-13 09:30:38,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201713385] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 09:30:38,643 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 09:30:38,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-13 09:30:38,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075284691] [2024-10-13 09:30:38,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 09:30:38,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 09:30:38,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:30:38,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 09:30:38,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-10-13 09:30:38,739 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 355 [2024-10-13 09:30:38,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 331 transitions, 744 flow. Second operand has 15 states, 15 states have (on average 305.26666666666665) internal successors, (4579), 15 states have internal predecessors, (4579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:30:38,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:30:38,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 355 [2024-10-13 09:30:38,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:30:41,316 INFO L124 PetriNetUnfolderBase]: 2345/13675 cut-off events. [2024-10-13 09:30:41,316 INFO L125 PetriNetUnfolderBase]: For 1237/1237 co-relation queries the response was YES. [2024-10-13 09:30:41,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16737 conditions, 13675 events. 2345/13675 cut-off events. For 1237/1237 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 164490 event pairs, 1720 based on Foata normal form. 3/12078 useless extension candidates. Maximal degree in co-relation 16557. Up to 2506 conditions per place. [2024-10-13 09:30:41,794 INFO L140 encePairwiseOnDemand]: 349/355 looper letters, 31 selfloop transitions, 18 changer transitions 0/345 dead transitions. [2024-10-13 09:30:41,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 345 transitions, 910 flow [2024-10-13 09:30:41,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-13 09:30:41,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-13 09:30:41,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5506 transitions. [2024-10-13 09:30:41,797 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8616588419405321 [2024-10-13 09:30:41,798 INFO L175 Difference]: Start difference. First operand has 334 places, 331 transitions, 744 flow. Second operand 18 states and 5506 transitions. [2024-10-13 09:30:41,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 345 transitions, 910 flow [2024-10-13 09:30:41,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 345 transitions, 898 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 09:30:41,805 INFO L231 Difference]: Finished difference. Result has 350 places, 341 transitions, 838 flow [2024-10-13 09:30:41,805 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=355, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=838, PETRI_PLACES=350, PETRI_TRANSITIONS=341} [2024-10-13 09:30:41,806 INFO L277 CegarLoopForPetriNet]: 329 programPoint places, 21 predicate places. [2024-10-13 09:30:41,806 INFO L471 AbstractCegarLoop]: Abstraction has has 350 places, 341 transitions, 838 flow [2024-10-13 09:30:41,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 305.26666666666665) internal successors, (4579), 15 states have internal predecessors, (4579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:30:41,808 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:30:41,808 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] [2024-10-13 09:30:41,827 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-13 09:30:42,008 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 [2024-10-13 09:30:42,009 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)] === [2024-10-13 09:30:42,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:30:42,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1140058058, now seen corresponding path program 2 times [2024-10-13 09:30:42,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:30:42,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15540426] [2024-10-13 09:30:42,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:30:42,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:30:42,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:30:42,052 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 09:30:42,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:30:42,106 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 09:30:42,106 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 09:30:42,107 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2024-10-13 09:30:42,107 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2024-10-13 09:30:42,108 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2024-10-13 09:30:42,108 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2024-10-13 09:30:42,109 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2024-10-13 09:30:42,109 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2024-10-13 09:30:42,109 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2024-10-13 09:30:42,109 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2024-10-13 09:30:42,109 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2024-10-13 09:30:42,109 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2024-10-13 09:30:42,109 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2024-10-13 09:30:42,110 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2024-10-13 09:30:42,110 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2024-10-13 09:30:42,110 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2024-10-13 09:30:42,110 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2024-10-13 09:30:42,110 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2024-10-13 09:30:42,110 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2024-10-13 09:30:42,110 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2024-10-13 09:30:42,110 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2024-10-13 09:30:42,111 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2024-10-13 09:30:42,111 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2024-10-13 09:30:42,111 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2024-10-13 09:30:42,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-13 09:30:42,111 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1] [2024-10-13 09:30:42,112 WARN L239 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 09:30:42,112 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-10-13 09:30:42,165 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 09:30:42,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 398 places, 430 transitions, 900 flow [2024-10-13 09:30:42,242 INFO L124 PetriNetUnfolderBase]: 48/483 cut-off events. [2024-10-13 09:30:42,242 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-10-13 09:30:42,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 509 conditions, 483 events. 48/483 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1872 event pairs, 0 based on Foata normal form. 0/408 useless extension candidates. Maximal degree in co-relation 410. Up to 12 conditions per place. [2024-10-13 09:30:42,255 INFO L82 GeneralOperation]: Start removeDead. Operand has 398 places, 430 transitions, 900 flow [2024-10-13 09:30:42,260 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 398 places, 430 transitions, 900 flow [2024-10-13 09:30:42,261 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 09:30:42,261 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;@51a9f66c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 09:30:42,261 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-10-13 09:30:42,264 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 09:30:42,264 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-10-13 09:30:42,264 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 09:30:42,264 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:30:42,265 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] [2024-10-13 09:30:42,265 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)] === [2024-10-13 09:30:42,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:30:42,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1683823188, now seen corresponding path program 1 times [2024-10-13 09:30:42,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:30:42,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840785641] [2024-10-13 09:30:42,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:30:42,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:30:42,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:30:42,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:30:42,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:30:42,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840785641] [2024-10-13 09:30:42,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840785641] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:30:42,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:30:42,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 09:30:42,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100533891] [2024-10-13 09:30:42,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:30:42,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 09:30:42,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:30:42,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 09:30:42,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-13 09:30:42,613 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 344 out of 430 [2024-10-13 09:30:42,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 430 transitions, 900 flow. Second operand has 6 states, 6 states have (on average 345.5) internal successors, (2073), 6 states have internal predecessors, (2073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:30:42,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:30:42,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 344 of 430 [2024-10-13 09:30:42,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand