./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/09_fmaxsym.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/09_fmaxsym.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 2ce2a912f26c96a7a9e9698d6a341c03f1dcacccb179d06c2396dd9f137bcbd1 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 15:04:50,688 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 15:04:50,769 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-24 15:04:50,774 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 15:04:50,775 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 15:04:50,807 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 15:04:50,810 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 15:04:50,810 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 15:04:50,811 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 15:04:50,811 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 15:04:50,812 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 15:04:50,813 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 15:04:50,813 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 15:04:50,816 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 15:04:50,816 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 15:04:50,816 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 15:04:50,817 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 15:04:50,817 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 15:04:50,817 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 15:04:50,817 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 15:04:50,821 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 15:04:50,822 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 15:04:50,822 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-24 15:04:50,822 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 15:04:50,822 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 15:04:50,823 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 15:04:50,823 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 15:04:50,823 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 15:04:50,823 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 15:04:50,823 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 15:04:50,824 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 15:04:50,824 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 15:04:50,824 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 15:04:50,824 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 15:04:50,825 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 15:04:50,825 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 15:04:50,829 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 15:04:50,829 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 15:04:50,829 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 15:04:50,830 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 15:04:50,830 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 15:04:50,831 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2ce2a912f26c96a7a9e9698d6a341c03f1dcacccb179d06c2396dd9f137bcbd1 [2024-10-24 15:04:51,096 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 15:04:51,125 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 15:04:51,128 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 15:04:51,130 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 15:04:51,130 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 15:04:51,131 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/09_fmaxsym.i [2024-10-24 15:04:52,586 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 15:04:52,821 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 15:04:52,822 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/09_fmaxsym.i [2024-10-24 15:04:52,834 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef3518c02/2378bbfcf62949a38e5651cd3316127f/FLAGc8a2893a1 [2024-10-24 15:04:53,161 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef3518c02/2378bbfcf62949a38e5651cd3316127f [2024-10-24 15:04:53,164 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 15:04:53,165 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 15:04:53,166 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 15:04:53,166 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 15:04:53,170 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 15:04:53,171 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:04:53" (1/1) ... [2024-10-24 15:04:53,172 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@531bd674 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:53, skipping insertion in model container [2024-10-24 15:04:53,172 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:04:53" (1/1) ... [2024-10-24 15:04:53,221 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 15:04:53,578 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 15:04:53,592 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 15:04:53,647 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 15:04:53,687 INFO L204 MainTranslator]: Completed translation [2024-10-24 15:04:53,688 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:53 WrapperNode [2024-10-24 15:04:53,688 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 15:04:53,689 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 15:04:53,690 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 15:04:53,690 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 15:04:53,697 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:53" (1/1) ... [2024-10-24 15:04:53,711 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:53" (1/1) ... [2024-10-24 15:04:53,735 INFO L138 Inliner]: procedures = 164, calls = 29, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 112 [2024-10-24 15:04:53,736 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 15:04:53,738 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 15:04:53,738 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 15:04:53,738 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 15:04:53,747 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:53" (1/1) ... [2024-10-24 15:04:53,748 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:53" (1/1) ... [2024-10-24 15:04:53,751 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:53" (1/1) ... [2024-10-24 15:04:53,754 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:53" (1/1) ... [2024-10-24 15:04:53,766 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:53" (1/1) ... [2024-10-24 15:04:53,773 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:53" (1/1) ... [2024-10-24 15:04:53,775 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:53" (1/1) ... [2024-10-24 15:04:53,780 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:53" (1/1) ... [2024-10-24 15:04:53,783 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 15:04:53,787 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 15:04:53,787 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 15:04:53,787 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 15:04:53,788 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:53" (1/1) ... [2024-10-24 15:04:53,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 15:04:53,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 15:04:53,822 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 15:04:53,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 15:04:53,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-24 15:04:53,867 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-24 15:04:53,867 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-24 15:04:53,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-24 15:04:53,867 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-24 15:04:53,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 15:04:53,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-24 15:04:53,868 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-24 15:04:53,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 15:04:53,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 15:04:53,869 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 15:04:53,989 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 15:04:53,991 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 15:04:54,294 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 15:04:54,294 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 15:04:54,324 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 15:04:54,324 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-24 15:04:54,325 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:04:54 BoogieIcfgContainer [2024-10-24 15:04:54,325 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 15:04:54,327 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 15:04:54,327 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 15:04:54,330 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 15:04:54,330 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 03:04:53" (1/3) ... [2024-10-24 15:04:54,331 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4564caf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:04:54, skipping insertion in model container [2024-10-24 15:04:54,331 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:53" (2/3) ... [2024-10-24 15:04:54,331 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4564caf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:04:54, skipping insertion in model container [2024-10-24 15:04:54,331 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:04:54" (3/3) ... [2024-10-24 15:04:54,332 INFO L112 eAbstractionObserver]: Analyzing ICFG 09_fmaxsym.i [2024-10-24 15:04:54,345 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 15:04:54,345 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-10-24 15:04:54,345 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 15:04:54,413 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 15:04:54,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 124 transitions, 252 flow [2024-10-24 15:04:54,501 INFO L124 PetriNetUnfolderBase]: 10/133 cut-off events. [2024-10-24 15:04:54,505 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 15:04:54,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 133 events. 10/133 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 129 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 79. Up to 4 conditions per place. [2024-10-24 15:04:54,515 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 124 transitions, 252 flow [2024-10-24 15:04:54,520 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 124 transitions, 252 flow [2024-10-24 15:04:54,533 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 15:04:54,543 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;@b41fa21, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 15:04:54,544 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-10-24 15:04:54,562 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 15:04:54,562 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-10-24 15:04:54,562 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 15:04:54,562 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:04:54,563 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:04:54,564 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-24 15:04:54,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:04:54,571 INFO L85 PathProgramCache]: Analyzing trace with hash -240468847, now seen corresponding path program 1 times [2024-10-24 15:04:54,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:04:54,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853090906] [2024-10-24 15:04:54,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:04:54,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:04:54,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:04:55,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:04:55,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:04:55,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853090906] [2024-10-24 15:04:55,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853090906] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:04:55,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:04:55,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 15:04:55,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662117216] [2024-10-24 15:04:55,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:04:55,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 15:04:55,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:04:55,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 15:04:55,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-24 15:04:55,664 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 124 [2024-10-24 15:04:55,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 124 transitions, 252 flow. Second operand has 6 states, 6 states have (on average 95.5) internal successors, (573), 6 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:04:55,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:04:55,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 124 [2024-10-24 15:04:55,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:04:55,748 INFO L124 PetriNetUnfolderBase]: 3/115 cut-off events. [2024-10-24 15:04:55,749 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-24 15:04:55,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 115 events. 3/115 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 77 event pairs, 0 based on Foata normal form. 15/121 useless extension candidates. Maximal degree in co-relation 76. Up to 16 conditions per place. [2024-10-24 15:04:55,752 INFO L140 encePairwiseOnDemand]: 111/124 looper letters, 15 selfloop transitions, 5 changer transitions 0/111 dead transitions. [2024-10-24 15:04:55,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 111 transitions, 266 flow [2024-10-24 15:04:55,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 15:04:55,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 15:04:55,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 592 transitions. [2024-10-24 15:04:55,769 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7956989247311828 [2024-10-24 15:04:55,772 INFO L175 Difference]: Start difference. First operand has 118 places, 124 transitions, 252 flow. Second operand 6 states and 592 transitions. [2024-10-24 15:04:55,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 111 transitions, 266 flow [2024-10-24 15:04:55,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 111 transitions, 266 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 15:04:55,781 INFO L231 Difference]: Finished difference. Result has 116 places, 111 transitions, 236 flow [2024-10-24 15:04:55,784 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=236, PETRI_PLACES=116, PETRI_TRANSITIONS=111} [2024-10-24 15:04:55,790 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, -2 predicate places. [2024-10-24 15:04:55,791 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 111 transitions, 236 flow [2024-10-24 15:04:55,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 95.5) internal successors, (573), 6 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:04:55,791 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:04:55,792 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:04:55,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 15:04:55,792 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-24 15:04:55,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:04:55,793 INFO L85 PathProgramCache]: Analyzing trace with hash -587319925, now seen corresponding path program 1 times [2024-10-24 15:04:55,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:04:55,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890849849] [2024-10-24 15:04:55,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:04:55,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:04:55,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:04:55,844 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 15:04:55,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:04:55,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890849849] [2024-10-24 15:04:55,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890849849] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:04:55,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:04:55,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 15:04:55,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185852525] [2024-10-24 15:04:55,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:04:55,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 15:04:55,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:04:55,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 15:04:55,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 15:04:55,887 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 124 [2024-10-24 15:04:55,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 111 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:04:55,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:04:55,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 124 [2024-10-24 15:04:55,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:04:55,949 INFO L124 PetriNetUnfolderBase]: 3/127 cut-off events. [2024-10-24 15:04:55,953 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-24 15:04:55,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 127 events. 3/127 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 73 event pairs, 0 based on Foata normal form. 1/120 useless extension candidates. Maximal degree in co-relation 92. Up to 11 conditions per place. [2024-10-24 15:04:55,954 INFO L140 encePairwiseOnDemand]: 121/124 looper letters, 9 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2024-10-24 15:04:55,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 112 transitions, 262 flow [2024-10-24 15:04:55,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 15:04:55,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 15:04:55,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 327 transitions. [2024-10-24 15:04:55,956 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8790322580645161 [2024-10-24 15:04:55,957 INFO L175 Difference]: Start difference. First operand has 116 places, 111 transitions, 236 flow. Second operand 3 states and 327 transitions. [2024-10-24 15:04:55,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 112 transitions, 262 flow [2024-10-24 15:04:55,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 112 transitions, 250 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-24 15:04:55,964 INFO L231 Difference]: Finished difference. Result has 114 places, 112 transitions, 238 flow [2024-10-24 15:04:55,964 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=114, PETRI_TRANSITIONS=112} [2024-10-24 15:04:55,965 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, -4 predicate places. [2024-10-24 15:04:55,966 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 112 transitions, 238 flow [2024-10-24 15:04:55,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:04:55,966 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:04:55,967 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:04:55,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 15:04:55,967 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-24 15:04:55,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:04:55,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1497332229, now seen corresponding path program 1 times [2024-10-24 15:04:55,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:04:55,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730226140] [2024-10-24 15:04:55,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:04:55,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:04:55,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:04:56,062 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 15:04:56,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:04:56,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730226140] [2024-10-24 15:04:56,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730226140] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 15:04:56,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801519035] [2024-10-24 15:04:56,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:04:56,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 15:04:56,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 15:04:56,066 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 15:04:56,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 15:04:56,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:04:56,160 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 15:04:56,164 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 15:04:56,250 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 15:04:56,252 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 15:04:56,315 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 15:04:56,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801519035] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 15:04:56,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 15:04:56,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-24 15:04:56,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275885115] [2024-10-24 15:04:56,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 15:04:56,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 15:04:56,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:04:56,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 15:04:56,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-24 15:04:56,402 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 124 [2024-10-24 15:04:56,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 112 transitions, 238 flow. Second operand has 10 states, 10 states have (on average 103.9) internal successors, (1039), 10 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:04:56,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:04:56,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 124 [2024-10-24 15:04:56,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:04:56,505 INFO L124 PetriNetUnfolderBase]: 3/142 cut-off events. [2024-10-24 15:04:56,505 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 15:04:56,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 142 events. 3/142 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 2/136 useless extension candidates. Maximal degree in co-relation 127. Up to 11 conditions per place. [2024-10-24 15:04:56,508 INFO L140 encePairwiseOnDemand]: 118/124 looper letters, 13 selfloop transitions, 9 changer transitions 0/120 dead transitions. [2024-10-24 15:04:56,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 120 transitions, 300 flow [2024-10-24 15:04:56,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 15:04:56,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-24 15:04:56,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 942 transitions. [2024-10-24 15:04:56,512 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8440860215053764 [2024-10-24 15:04:56,512 INFO L175 Difference]: Start difference. First operand has 114 places, 112 transitions, 238 flow. Second operand 9 states and 942 transitions. [2024-10-24 15:04:56,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 120 transitions, 300 flow [2024-10-24 15:04:56,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 120 transitions, 298 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 15:04:56,518 INFO L231 Difference]: Finished difference. Result has 124 places, 118 transitions, 286 flow [2024-10-24 15:04:56,519 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=286, PETRI_PLACES=124, PETRI_TRANSITIONS=118} [2024-10-24 15:04:56,520 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 6 predicate places. [2024-10-24 15:04:56,520 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 118 transitions, 286 flow [2024-10-24 15:04:56,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 103.9) internal successors, (1039), 10 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:04:56,522 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:04:56,522 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:04:56,547 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 15:04:56,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 15:04:56,726 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-24 15:04:56,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:04:56,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1309340731, now seen corresponding path program 2 times [2024-10-24 15:04:56,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:04:56,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473619297] [2024-10-24 15:04:56,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:04:56,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:04:56,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:04:56,931 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 15:04:56,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:04:56,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473619297] [2024-10-24 15:04:56,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473619297] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 15:04:56,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491929914] [2024-10-24 15:04:56,933 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 15:04:56,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 15:04:56,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 15:04:56,935 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 15:04:56,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 15:04:57,042 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 15:04:57,042 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 15:04:57,044 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 15:04:57,047 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 15:04:57,157 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 15:04:57,160 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 15:04:57,293 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 15:04:57,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491929914] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 15:04:57,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 15:04:57,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-24 15:04:57,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481304578] [2024-10-24 15:04:57,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 15:04:57,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-24 15:04:57,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:04:57,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-24 15:04:57,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-10-24 15:04:57,398 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 124 [2024-10-24 15:04:57,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 118 transitions, 286 flow. Second operand has 15 states, 15 states have (on average 104.06666666666666) internal successors, (1561), 15 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:04:57,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:04:57,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 124 [2024-10-24 15:04:57,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:04:57,583 INFO L124 PetriNetUnfolderBase]: 3/181 cut-off events. [2024-10-24 15:04:57,584 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-10-24 15:04:57,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270 conditions, 181 events. 3/181 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 3/176 useless extension candidates. Maximal degree in co-relation 186. Up to 11 conditions per place. [2024-10-24 15:04:57,585 INFO L140 encePairwiseOnDemand]: 118/124 looper letters, 16 selfloop transitions, 18 changer transitions 0/132 dead transitions. [2024-10-24 15:04:57,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 132 transitions, 428 flow [2024-10-24 15:04:57,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-24 15:04:57,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-24 15:04:57,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1873 transitions. [2024-10-24 15:04:57,590 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.83915770609319 [2024-10-24 15:04:57,590 INFO L175 Difference]: Start difference. First operand has 124 places, 118 transitions, 286 flow. Second operand 18 states and 1873 transitions. [2024-10-24 15:04:57,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 132 transitions, 428 flow [2024-10-24 15:04:57,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 132 transitions, 416 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-10-24 15:04:57,598 INFO L231 Difference]: Finished difference. Result has 144 places, 128 transitions, 386 flow [2024-10-24 15:04:57,599 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=386, PETRI_PLACES=144, PETRI_TRANSITIONS=128} [2024-10-24 15:04:57,599 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 26 predicate places. [2024-10-24 15:04:57,600 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 128 transitions, 386 flow [2024-10-24 15:04:57,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 104.06666666666666) internal successors, (1561), 15 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:04:57,601 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:04:57,602 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:04:57,621 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 15:04:57,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-10-24 15:04:57,806 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-24 15:04:57,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:04:57,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1738405813, now seen corresponding path program 3 times [2024-10-24 15:04:57,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:04:57,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688512755] [2024-10-24 15:04:57,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:04:57,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:04:57,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:04:57,870 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 15:04:57,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:04:57,939 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 15:04:57,939 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 15:04:57,940 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2024-10-24 15:04:57,942 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2024-10-24 15:04:57,942 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2024-10-24 15:04:57,942 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2024-10-24 15:04:57,943 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2024-10-24 15:04:57,943 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2024-10-24 15:04:57,943 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2024-10-24 15:04:57,943 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2024-10-24 15:04:57,943 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2024-10-24 15:04:57,944 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2024-10-24 15:04:57,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 15:04:57,944 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-10-24 15:04:57,947 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-24 15:04:57,947 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-24 15:04:57,992 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 15:04:58,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 193 transitions, 396 flow [2024-10-24 15:04:58,038 INFO L124 PetriNetUnfolderBase]: 17/213 cut-off events. [2024-10-24 15:04:58,038 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 15:04:58,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 213 events. 17/213 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 390 event pairs, 0 based on Foata normal form. 0/184 useless extension candidates. Maximal degree in co-relation 147. Up to 6 conditions per place. [2024-10-24 15:04:58,040 INFO L82 GeneralOperation]: Start removeDead. Operand has 183 places, 193 transitions, 396 flow [2024-10-24 15:04:58,042 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 183 places, 193 transitions, 396 flow [2024-10-24 15:04:58,043 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 15:04:58,044 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;@b41fa21, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 15:04:58,044 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-10-24 15:04:58,047 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 15:04:58,047 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-10-24 15:04:58,048 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 15:04:58,048 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:04:58,048 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:04:58,048 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-10-24 15:04:58,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:04:58,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1282713394, now seen corresponding path program 1 times [2024-10-24 15:04:58,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:04:58,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475974423] [2024-10-24 15:04:58,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:04:58,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:04:58,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:04:58,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:04:58,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:04:58,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475974423] [2024-10-24 15:04:58,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475974423] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:04:58,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:04:58,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 15:04:58,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585517424] [2024-10-24 15:04:58,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:04:58,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 15:04:58,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:04:58,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 15:04:58,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-24 15:04:58,401 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 193 [2024-10-24 15:04:58,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 193 transitions, 396 flow. Second operand has 6 states, 6 states have (on average 150.5) internal successors, (903), 6 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:04:58,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:04:58,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 193 [2024-10-24 15:04:58,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:04:58,564 INFO L124 PetriNetUnfolderBase]: 104/729 cut-off events. [2024-10-24 15:04:58,565 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-10-24 15:04:58,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 951 conditions, 729 events. 104/729 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3762 event pairs, 72 based on Foata normal form. 162/784 useless extension candidates. Maximal degree in co-relation 670. Up to 185 conditions per place. [2024-10-24 15:04:58,573 INFO L140 encePairwiseOnDemand]: 176/193 looper letters, 24 selfloop transitions, 5 changer transitions 0/174 dead transitions. [2024-10-24 15:04:58,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 174 transitions, 416 flow [2024-10-24 15:04:58,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 15:04:58,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 15:04:58,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 935 transitions. [2024-10-24 15:04:58,575 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8074265975820379 [2024-10-24 15:04:58,575 INFO L175 Difference]: Start difference. First operand has 183 places, 193 transitions, 396 flow. Second operand 6 states and 935 transitions. [2024-10-24 15:04:58,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 174 transitions, 416 flow [2024-10-24 15:04:58,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 174 transitions, 416 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 15:04:58,579 INFO L231 Difference]: Finished difference. Result has 179 places, 174 transitions, 368 flow [2024-10-24 15:04:58,579 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=368, PETRI_PLACES=179, PETRI_TRANSITIONS=174} [2024-10-24 15:04:58,581 INFO L277 CegarLoopForPetriNet]: 183 programPoint places, -4 predicate places. [2024-10-24 15:04:58,582 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 174 transitions, 368 flow [2024-10-24 15:04:58,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 150.5) internal successors, (903), 6 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:04:58,582 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:04:58,583 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:04:58,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 15:04:58,583 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-10-24 15:04:58,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:04:58,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1555781261, now seen corresponding path program 1 times [2024-10-24 15:04:58,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:04:58,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433794052] [2024-10-24 15:04:58,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:04:58,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:04:58,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:04:58,615 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-24 15:04:58,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:04:58,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433794052] [2024-10-24 15:04:58,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433794052] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:04:58,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:04:58,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 15:04:58,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613175221] [2024-10-24 15:04:58,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:04:58,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 15:04:58,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:04:58,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 15:04:58,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 15:04:58,642 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 193 [2024-10-24 15:04:58,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 174 transitions, 368 flow. Second operand has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:04:58,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:04:58,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 193 [2024-10-24 15:04:58,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:04:58,712 INFO L124 PetriNetUnfolderBase]: 33/496 cut-off events. [2024-10-24 15:04:58,712 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-10-24 15:04:58,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 584 conditions, 496 events. 33/496 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2022 event pairs, 20 based on Foata normal form. 1/448 useless extension candidates. Maximal degree in co-relation 521. Up to 56 conditions per place. [2024-10-24 15:04:58,716 INFO L140 encePairwiseOnDemand]: 190/193 looper letters, 14 selfloop transitions, 2 changer transitions 0/175 dead transitions. [2024-10-24 15:04:58,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 175 transitions, 404 flow [2024-10-24 15:04:58,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 15:04:58,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 15:04:58,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 509 transitions. [2024-10-24 15:04:58,718 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8791018998272885 [2024-10-24 15:04:58,719 INFO L175 Difference]: Start difference. First operand has 179 places, 174 transitions, 368 flow. Second operand 3 states and 509 transitions. [2024-10-24 15:04:58,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 175 transitions, 404 flow [2024-10-24 15:04:58,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 175 transitions, 392 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-24 15:04:58,722 INFO L231 Difference]: Finished difference. Result has 177 places, 175 transitions, 370 flow [2024-10-24 15:04:58,722 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=370, PETRI_PLACES=177, PETRI_TRANSITIONS=175} [2024-10-24 15:04:58,723 INFO L277 CegarLoopForPetriNet]: 183 programPoint places, -6 predicate places. [2024-10-24 15:04:58,723 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 175 transitions, 370 flow [2024-10-24 15:04:58,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:04:58,724 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:04:58,724 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:04:58,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 15:04:58,725 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-10-24 15:04:58,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:04:58,725 INFO L85 PathProgramCache]: Analyzing trace with hash 846948760, now seen corresponding path program 1 times [2024-10-24 15:04:58,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:04:58,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273043686] [2024-10-24 15:04:58,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:04:58,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:04:58,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:04:58,793 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-24 15:04:58,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:04:58,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273043686] [2024-10-24 15:04:58,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273043686] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 15:04:58,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72238617] [2024-10-24 15:04:58,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:04:58,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 15:04:58,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 15:04:58,797 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 15:04:58,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 15:04:58,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:04:58,879 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 15:04:58,881 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 15:04:58,918 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-24 15:04:58,918 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 15:04:58,963 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-24 15:04:58,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72238617] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 15:04:58,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 15:04:58,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-24 15:04:58,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044339047] [2024-10-24 15:04:58,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 15:04:58,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 15:04:58,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:04:58,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 15:04:58,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-24 15:04:59,044 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 193 [2024-10-24 15:04:59,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 175 transitions, 370 flow. Second operand has 10 states, 10 states have (on average 163.0) internal successors, (1630), 10 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:04:59,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:04:59,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 193 [2024-10-24 15:04:59,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:04:59,204 INFO L124 PetriNetUnfolderBase]: 33/511 cut-off events. [2024-10-24 15:04:59,204 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-10-24 15:04:59,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 607 conditions, 511 events. 33/511 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1997 event pairs, 20 based on Foata normal form. 2/464 useless extension candidates. Maximal degree in co-relation 556. Up to 56 conditions per place. [2024-10-24 15:04:59,209 INFO L140 encePairwiseOnDemand]: 187/193 looper letters, 18 selfloop transitions, 9 changer transitions 0/183 dead transitions. [2024-10-24 15:04:59,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 183 transitions, 442 flow [2024-10-24 15:04:59,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 15:04:59,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-24 15:04:59,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1478 transitions. [2024-10-24 15:04:59,213 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8508923431203224 [2024-10-24 15:04:59,213 INFO L175 Difference]: Start difference. First operand has 177 places, 175 transitions, 370 flow. Second operand 9 states and 1478 transitions. [2024-10-24 15:04:59,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 183 transitions, 442 flow [2024-10-24 15:04:59,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 183 transitions, 440 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 15:04:59,216 INFO L231 Difference]: Finished difference. Result has 187 places, 181 transitions, 418 flow [2024-10-24 15:04:59,217 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=418, PETRI_PLACES=187, PETRI_TRANSITIONS=181} [2024-10-24 15:04:59,218 INFO L277 CegarLoopForPetriNet]: 183 programPoint places, 4 predicate places. [2024-10-24 15:04:59,219 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 181 transitions, 418 flow [2024-10-24 15:04:59,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 163.0) internal successors, (1630), 10 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:04:59,220 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:04:59,221 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:04:59,239 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-24 15:04:59,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 15:04:59,422 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-10-24 15:04:59,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:04:59,422 INFO L85 PathProgramCache]: Analyzing trace with hash -196544136, now seen corresponding path program 2 times [2024-10-24 15:04:59,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:04:59,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915853130] [2024-10-24 15:04:59,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:04:59,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:04:59,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:04:59,564 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-24 15:04:59,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:04:59,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915853130] [2024-10-24 15:04:59,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915853130] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 15:04:59,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591513006] [2024-10-24 15:04:59,565 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 15:04:59,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 15:04:59,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 15:04:59,567 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 15:04:59,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 15:04:59,669 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 15:04:59,669 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 15:04:59,671 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 15:04:59,673 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 15:04:59,742 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-24 15:04:59,743 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 15:04:59,845 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-24 15:04:59,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591513006] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 15:04:59,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 15:04:59,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-24 15:04:59,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191593996] [2024-10-24 15:04:59,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 15:04:59,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-24 15:04:59,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:04:59,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-24 15:04:59,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-10-24 15:04:59,966 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 193 [2024-10-24 15:04:59,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 181 transitions, 418 flow. Second operand has 15 states, 15 states have (on average 163.13333333333333) internal successors, (2447), 15 states have internal predecessors, (2447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:04:59,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:04:59,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 193 [2024-10-24 15:04:59,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:05:00,202 INFO L124 PetriNetUnfolderBase]: 33/550 cut-off events. [2024-10-24 15:05:00,203 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2024-10-24 15:05:00,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 700 conditions, 550 events. 33/550 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1997 event pairs, 20 based on Foata normal form. 3/504 useless extension candidates. Maximal degree in co-relation 518. Up to 56 conditions per place. [2024-10-24 15:05:00,207 INFO L140 encePairwiseOnDemand]: 187/193 looper letters, 21 selfloop transitions, 18 changer transitions 0/195 dead transitions. [2024-10-24 15:05:00,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 195 transitions, 570 flow [2024-10-24 15:05:00,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-24 15:05:00,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-24 15:05:00,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2940 transitions. [2024-10-24 15:05:00,213 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.846286701208981 [2024-10-24 15:05:00,213 INFO L175 Difference]: Start difference. First operand has 187 places, 181 transitions, 418 flow. Second operand 18 states and 2940 transitions. [2024-10-24 15:05:00,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 195 transitions, 570 flow [2024-10-24 15:05:00,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 195 transitions, 558 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-10-24 15:05:00,218 INFO L231 Difference]: Finished difference. Result has 207 places, 191 transitions, 518 flow [2024-10-24 15:05:00,219 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=518, PETRI_PLACES=207, PETRI_TRANSITIONS=191} [2024-10-24 15:05:00,219 INFO L277 CegarLoopForPetriNet]: 183 programPoint places, 24 predicate places. [2024-10-24 15:05:00,219 INFO L471 AbstractCegarLoop]: Abstraction has has 207 places, 191 transitions, 518 flow [2024-10-24 15:05:00,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 163.13333333333333) internal successors, (2447), 15 states have internal predecessors, (2447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:05:00,221 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:05:00,221 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:05:00,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-24 15:05:00,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 15:05:00,422 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-10-24 15:05:00,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:05:00,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1436573139, now seen corresponding path program 3 times [2024-10-24 15:05:00,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:05:00,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680414035] [2024-10-24 15:05:00,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:00,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:05:00,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:05:00,468 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 15:05:00,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:05:00,515 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 15:05:00,516 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 15:05:00,517 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2024-10-24 15:05:00,517 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 14 remaining) [2024-10-24 15:05:00,517 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 14 remaining) [2024-10-24 15:05:00,517 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 14 remaining) [2024-10-24 15:05:00,518 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (9 of 14 remaining) [2024-10-24 15:05:00,518 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 14 remaining) [2024-10-24 15:05:00,518 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 14 remaining) [2024-10-24 15:05:00,518 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 14 remaining) [2024-10-24 15:05:00,518 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 14 remaining) [2024-10-24 15:05:00,518 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 14 remaining) [2024-10-24 15:05:00,518 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 14 remaining) [2024-10-24 15:05:00,519 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 14 remaining) [2024-10-24 15:05:00,519 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 14 remaining) [2024-10-24 15:05:00,519 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 14 remaining) [2024-10-24 15:05:00,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 15:05:00,519 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-10-24 15:05:00,520 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-24 15:05:00,520 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-24 15:05:00,559 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 15:05:00,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 248 places, 262 transitions, 542 flow [2024-10-24 15:05:00,595 INFO L124 PetriNetUnfolderBase]: 24/293 cut-off events. [2024-10-24 15:05:00,595 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-24 15:05:00,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 293 events. 24/293 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 753 event pairs, 0 based on Foata normal form. 0/252 useless extension candidates. Maximal degree in co-relation 217. Up to 8 conditions per place. [2024-10-24 15:05:00,599 INFO L82 GeneralOperation]: Start removeDead. Operand has 248 places, 262 transitions, 542 flow [2024-10-24 15:05:00,604 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 248 places, 262 transitions, 542 flow [2024-10-24 15:05:00,605 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 15:05:00,607 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;@b41fa21, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 15:05:00,608 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-10-24 15:05:00,611 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 15:05:00,614 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-10-24 15:05:00,615 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 15:05:00,615 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:05:00,615 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:05:00,615 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-10-24 15:05:00,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:05:00,615 INFO L85 PathProgramCache]: Analyzing trace with hash -9858184, now seen corresponding path program 1 times [2024-10-24 15:05:00,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:05:00,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944049784] [2024-10-24 15:05:00,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:00,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:05:00,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:05:00,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:05:00,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:05:00,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944049784] [2024-10-24 15:05:00,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944049784] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:05:00,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:05:00,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 15:05:00,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825962853] [2024-10-24 15:05:00,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:05:00,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 15:05:00,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:05:00,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 15:05:00,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-24 15:05:01,097 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 262 [2024-10-24 15:05:01,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 262 transitions, 542 flow. Second operand has 6 states, 6 states have (on average 205.5) internal successors, (1233), 6 states have internal predecessors, (1233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:05:01,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:05:01,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 262 [2024-10-24 15:05:01,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:05:02,170 INFO L124 PetriNetUnfolderBase]: 1746/6799 cut-off events. [2024-10-24 15:05:02,171 INFO L125 PetriNetUnfolderBase]: For 526/526 co-relation queries the response was YES. [2024-10-24 15:05:02,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9610 conditions, 6799 events. 1746/6799 cut-off events. For 526/526 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 66614 event pairs, 1368 based on Foata normal form. 1870/7599 useless extension candidates. Maximal degree in co-relation 6430. Up to 2449 conditions per place. [2024-10-24 15:05:02,248 INFO L140 encePairwiseOnDemand]: 241/262 looper letters, 33 selfloop transitions, 5 changer transitions 0/237 dead transitions. [2024-10-24 15:05:02,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 237 transitions, 568 flow [2024-10-24 15:05:02,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 15:05:02,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 15:05:02,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1278 transitions. [2024-10-24 15:05:02,251 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8129770992366412 [2024-10-24 15:05:02,251 INFO L175 Difference]: Start difference. First operand has 248 places, 262 transitions, 542 flow. Second operand 6 states and 1278 transitions. [2024-10-24 15:05:02,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 237 transitions, 568 flow [2024-10-24 15:05:02,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 237 transitions, 566 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-24 15:05:02,257 INFO L231 Difference]: Finished difference. Result has 242 places, 237 transitions, 500 flow [2024-10-24 15:05:02,257 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=500, PETRI_PLACES=242, PETRI_TRANSITIONS=237} [2024-10-24 15:05:02,258 INFO L277 CegarLoopForPetriNet]: 248 programPoint places, -6 predicate places. [2024-10-24 15:05:02,258 INFO L471 AbstractCegarLoop]: Abstraction has has 242 places, 237 transitions, 500 flow [2024-10-24 15:05:02,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 205.5) internal successors, (1233), 6 states have internal predecessors, (1233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:05:02,259 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:05:02,259 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:05:02,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 15:05:02,260 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-10-24 15:05:02,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:05:02,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1070750038, now seen corresponding path program 1 times [2024-10-24 15:05:02,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:05:02,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800789013] [2024-10-24 15:05:02,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:02,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:05:02,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:05:02,288 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-24 15:05:02,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:05:02,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800789013] [2024-10-24 15:05:02,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800789013] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:05:02,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:05:02,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 15:05:02,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955518579] [2024-10-24 15:05:02,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:05:02,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 15:05:02,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:05:02,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 15:05:02,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 15:05:02,314 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 262 [2024-10-24 15:05:02,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 237 transitions, 500 flow. Second operand has 3 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:05:02,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:05:02,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 262 [2024-10-24 15:05:02,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:05:02,681 INFO L124 PetriNetUnfolderBase]: 283/2441 cut-off events. [2024-10-24 15:05:02,681 INFO L125 PetriNetUnfolderBase]: For 168/168 co-relation queries the response was YES. [2024-10-24 15:05:02,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2930 conditions, 2441 events. 283/2441 cut-off events. For 168/168 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 20042 event pairs, 220 based on Foata normal form. 1/2187 useless extension candidates. Maximal degree in co-relation 2866. Up to 381 conditions per place. [2024-10-24 15:05:02,756 INFO L140 encePairwiseOnDemand]: 259/262 looper letters, 19 selfloop transitions, 2 changer transitions 0/238 dead transitions. [2024-10-24 15:05:02,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 238 transitions, 546 flow [2024-10-24 15:05:02,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 15:05:02,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 15:05:02,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 691 transitions. [2024-10-24 15:05:02,759 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8791348600508906 [2024-10-24 15:05:02,759 INFO L175 Difference]: Start difference. First operand has 242 places, 237 transitions, 500 flow. Second operand 3 states and 691 transitions. [2024-10-24 15:05:02,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 238 transitions, 546 flow [2024-10-24 15:05:02,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 238 transitions, 534 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-24 15:05:02,764 INFO L231 Difference]: Finished difference. Result has 240 places, 238 transitions, 502 flow [2024-10-24 15:05:02,764 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=502, PETRI_PLACES=240, PETRI_TRANSITIONS=238} [2024-10-24 15:05:02,765 INFO L277 CegarLoopForPetriNet]: 248 programPoint places, -8 predicate places. [2024-10-24 15:05:02,765 INFO L471 AbstractCegarLoop]: Abstraction has has 240 places, 238 transitions, 502 flow [2024-10-24 15:05:02,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:05:02,766 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:05:02,766 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:05:02,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 15:05:02,766 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-10-24 15:05:02,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:05:02,767 INFO L85 PathProgramCache]: Analyzing trace with hash 2021498603, now seen corresponding path program 1 times [2024-10-24 15:05:02,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:05:02,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285155564] [2024-10-24 15:05:02,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:02,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:05:02,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:05:02,834 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-24 15:05:02,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:05:02,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285155564] [2024-10-24 15:05:02,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285155564] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 15:05:02,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681019760] [2024-10-24 15:05:02,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:02,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 15:05:02,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 15:05:02,837 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 15:05:02,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 15:05:02,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:05:02,946 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 15:05:02,947 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 15:05:02,979 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-24 15:05:02,980 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 15:05:03,018 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-24 15:05:03,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681019760] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 15:05:03,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 15:05:03,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-24 15:05:03,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859866338] [2024-10-24 15:05:03,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 15:05:03,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 15:05:03,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:05:03,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 15:05:03,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-24 15:05:03,081 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 262 [2024-10-24 15:05:03,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 238 transitions, 502 flow. Second operand has 10 states, 10 states have (on average 222.1) internal successors, (2221), 10 states have internal predecessors, (2221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:05:03,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:05:03,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 262 [2024-10-24 15:05:03,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:05:03,523 INFO L124 PetriNetUnfolderBase]: 283/2456 cut-off events. [2024-10-24 15:05:03,524 INFO L125 PetriNetUnfolderBase]: For 167/167 co-relation queries the response was YES. [2024-10-24 15:05:03,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2953 conditions, 2456 events. 283/2456 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 19940 event pairs, 220 based on Foata normal form. 2/2203 useless extension candidates. Maximal degree in co-relation 2901. Up to 381 conditions per place. [2024-10-24 15:05:03,553 INFO L140 encePairwiseOnDemand]: 256/262 looper letters, 23 selfloop transitions, 9 changer transitions 0/246 dead transitions. [2024-10-24 15:05:03,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 246 transitions, 584 flow [2024-10-24 15:05:03,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 15:05:03,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-24 15:05:03,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2014 transitions. [2024-10-24 15:05:03,557 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8541136556403732 [2024-10-24 15:05:03,557 INFO L175 Difference]: Start difference. First operand has 240 places, 238 transitions, 502 flow. Second operand 9 states and 2014 transitions. [2024-10-24 15:05:03,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 246 transitions, 584 flow [2024-10-24 15:05:03,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 246 transitions, 582 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 15:05:03,562 INFO L231 Difference]: Finished difference. Result has 250 places, 244 transitions, 550 flow [2024-10-24 15:05:03,563 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=550, PETRI_PLACES=250, PETRI_TRANSITIONS=244} [2024-10-24 15:05:03,563 INFO L277 CegarLoopForPetriNet]: 248 programPoint places, 2 predicate places. [2024-10-24 15:05:03,563 INFO L471 AbstractCegarLoop]: Abstraction has has 250 places, 244 transitions, 550 flow [2024-10-24 15:05:03,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 222.1) internal successors, (2221), 10 states have internal predecessors, (2221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:05:03,564 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:05:03,565 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:05:03,582 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-24 15:05:03,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-24 15:05:03,766 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-10-24 15:05:03,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:05:03,766 INFO L85 PathProgramCache]: Analyzing trace with hash 646975819, now seen corresponding path program 2 times [2024-10-24 15:05:03,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:05:03,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684250355] [2024-10-24 15:05:03,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:03,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:05:03,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:05:03,930 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-24 15:05:03,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:05:03,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684250355] [2024-10-24 15:05:03,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684250355] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 15:05:03,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134153389] [2024-10-24 15:05:03,931 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 15:05:03,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 15:05:03,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 15:05:03,933 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 15:05:03,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 15:05:04,059 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 15:05:04,060 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 15:05:04,061 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 15:05:04,064 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 15:05:04,142 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-24 15:05:04,142 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 15:05:04,254 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-24 15:05:04,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134153389] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 15:05:04,256 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 15:05:04,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-24 15:05:04,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169312020] [2024-10-24 15:05:04,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 15:05:04,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-24 15:05:04,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:05:04,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-24 15:05:04,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-10-24 15:05:04,386 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 262 [2024-10-24 15:05:04,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 244 transitions, 550 flow. Second operand has 15 states, 15 states have (on average 222.2) internal successors, (3333), 15 states have internal predecessors, (3333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:05:04,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:05:04,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 262 [2024-10-24 15:05:04,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:05:05,073 INFO L124 PetriNetUnfolderBase]: 283/2495 cut-off events. [2024-10-24 15:05:05,074 INFO L125 PetriNetUnfolderBase]: For 189/189 co-relation queries the response was YES. [2024-10-24 15:05:05,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3046 conditions, 2495 events. 283/2495 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 19938 event pairs, 220 based on Foata normal form. 3/2243 useless extension candidates. Maximal degree in co-relation 2863. Up to 381 conditions per place. [2024-10-24 15:05:05,110 INFO L140 encePairwiseOnDemand]: 256/262 looper letters, 26 selfloop transitions, 18 changer transitions 0/258 dead transitions. [2024-10-24 15:05:05,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 258 transitions, 712 flow [2024-10-24 15:05:05,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-24 15:05:05,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-24 15:05:05,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4007 transitions. [2024-10-24 15:05:05,119 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8496607294317218 [2024-10-24 15:05:05,120 INFO L175 Difference]: Start difference. First operand has 250 places, 244 transitions, 550 flow. Second operand 18 states and 4007 transitions. [2024-10-24 15:05:05,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 258 transitions, 712 flow [2024-10-24 15:05:05,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 258 transitions, 700 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-10-24 15:05:05,173 INFO L231 Difference]: Finished difference. Result has 270 places, 254 transitions, 650 flow [2024-10-24 15:05:05,174 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=650, PETRI_PLACES=270, PETRI_TRANSITIONS=254} [2024-10-24 15:05:05,175 INFO L277 CegarLoopForPetriNet]: 248 programPoint places, 22 predicate places. [2024-10-24 15:05:05,175 INFO L471 AbstractCegarLoop]: Abstraction has has 270 places, 254 transitions, 650 flow [2024-10-24 15:05:05,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 222.2) internal successors, (3333), 15 states have internal predecessors, (3333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:05:05,176 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:05:05,177 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:05:05,194 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-24 15:05:05,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 15:05:05,378 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-10-24 15:05:05,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:05:05,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1702814602, now seen corresponding path program 3 times [2024-10-24 15:05:05,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:05:05,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843613041] [2024-10-24 15:05:05,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:05,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:05:05,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:05:05,411 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 15:05:05,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:05:05,438 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 15:05:05,439 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 15:05:05,439 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2024-10-24 15:05:05,439 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (16 of 18 remaining) [2024-10-24 15:05:05,440 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (15 of 18 remaining) [2024-10-24 15:05:05,440 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 18 remaining) [2024-10-24 15:05:05,440 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (13 of 18 remaining) [2024-10-24 15:05:05,440 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (12 of 18 remaining) [2024-10-24 15:05:05,440 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 18 remaining) [2024-10-24 15:05:05,440 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 18 remaining) [2024-10-24 15:05:05,440 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 18 remaining) [2024-10-24 15:05:05,440 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 18 remaining) [2024-10-24 15:05:05,440 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 18 remaining) [2024-10-24 15:05:05,441 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 18 remaining) [2024-10-24 15:05:05,441 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 18 remaining) [2024-10-24 15:05:05,441 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 18 remaining) [2024-10-24 15:05:05,441 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 18 remaining) [2024-10-24 15:05:05,441 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 18 remaining) [2024-10-24 15:05:05,441 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 18 remaining) [2024-10-24 15:05:05,441 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 18 remaining) [2024-10-24 15:05:05,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-24 15:05:05,442 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-10-24 15:05:05,442 WARN L239 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-24 15:05:05,442 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-24 15:05:05,487 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 15:05:05,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 313 places, 331 transitions, 690 flow [2024-10-24 15:05:05,540 INFO L124 PetriNetUnfolderBase]: 31/373 cut-off events. [2024-10-24 15:05:05,540 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-24 15:05:05,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 392 conditions, 373 events. 31/373 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1155 event pairs, 0 based on Foata normal form. 0/320 useless extension candidates. Maximal degree in co-relation 301. Up to 10 conditions per place. [2024-10-24 15:05:05,547 INFO L82 GeneralOperation]: Start removeDead. Operand has 313 places, 331 transitions, 690 flow [2024-10-24 15:05:05,550 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 313 places, 331 transitions, 690 flow [2024-10-24 15:05:05,552 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 15:05:05,552 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;@b41fa21, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 15:05:05,552 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-10-24 15:05:05,555 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 15:05:05,555 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-10-24 15:05:05,555 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 15:05:05,555 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:05:05,556 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:05:05,556 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-24 15:05:05,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:05:05,556 INFO L85 PathProgramCache]: Analyzing trace with hash 176783715, now seen corresponding path program 1 times [2024-10-24 15:05:05,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:05:05,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334710973] [2024-10-24 15:05:05,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:05,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:05:05,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:05:05,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:05:05,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:05:05,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334710973] [2024-10-24 15:05:05,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334710973] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:05:05,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:05:05,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 15:05:05,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236161681] [2024-10-24 15:05:05,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:05:05,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 15:05:05,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:05:05,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 15:05:05,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-24 15:05:05,983 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 331 [2024-10-24 15:05:05,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 331 transitions, 690 flow. Second operand has 6 states, 6 states have (on average 260.5) internal successors, (1563), 6 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:05:05,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:05:05,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 331 [2024-10-24 15:05:05,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:05:16,173 INFO L124 PetriNetUnfolderBase]: 23093/67620 cut-off events. [2024-10-24 15:05:16,173 INFO L125 PetriNetUnfolderBase]: For 7852/7852 co-relation queries the response was YES. [2024-10-24 15:05:16,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101042 conditions, 67620 events. 23093/67620 cut-off events. For 7852/7852 co-relation queries the response was YES. Maximal size of possible extension queue 1858. Compared 896187 event pairs, 18864 based on Foata normal form. 20917/78635 useless extension candidates. Maximal degree in co-relation 60574. Up to 29414 conditions per place. [2024-10-24 15:05:17,187 INFO L140 encePairwiseOnDemand]: 306/331 looper letters, 42 selfloop transitions, 5 changer transitions 0/300 dead transitions. [2024-10-24 15:05:17,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 300 transitions, 722 flow [2024-10-24 15:05:17,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 15:05:17,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 15:05:17,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1621 transitions. [2024-10-24 15:05:17,191 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8162134944612286 [2024-10-24 15:05:17,191 INFO L175 Difference]: Start difference. First operand has 313 places, 331 transitions, 690 flow. Second operand 6 states and 1621 transitions. [2024-10-24 15:05:17,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 300 transitions, 722 flow [2024-10-24 15:05:17,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 300 transitions, 716 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-10-24 15:05:17,200 INFO L231 Difference]: Finished difference. Result has 305 places, 300 transitions, 632 flow [2024-10-24 15:05:17,201 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=632, PETRI_PLACES=305, PETRI_TRANSITIONS=300} [2024-10-24 15:05:17,202 INFO L277 CegarLoopForPetriNet]: 313 programPoint places, -8 predicate places. [2024-10-24 15:05:17,202 INFO L471 AbstractCegarLoop]: Abstraction has has 305 places, 300 transitions, 632 flow [2024-10-24 15:05:17,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 260.5) internal successors, (1563), 6 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:05:17,203 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:05:17,203 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] [2024-10-24 15:05:17,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-24 15:05:17,203 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-24 15:05:17,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:05:17,203 INFO L85 PathProgramCache]: Analyzing trace with hash 388618173, now seen corresponding path program 1 times [2024-10-24 15:05:17,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:05:17,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981654815] [2024-10-24 15:05:17,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:17,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:05:17,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:05:17,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:05:17,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:05:17,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981654815] [2024-10-24 15:05:17,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981654815] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:05:17,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:05:17,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 15:05:17,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097582478] [2024-10-24 15:05:17,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:05:17,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 15:05:17,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:05:17,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 15:05:17,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 15:05:17,500 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 331 [2024-10-24 15:05:17,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 300 transitions, 632 flow. Second operand has 3 states, 3 states have (on average 283.6666666666667) internal successors, (851), 3 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:05:17,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:05:17,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 331 [2024-10-24 15:05:17,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:05:19,609 INFO L124 PetriNetUnfolderBase]: 2033/12666 cut-off events. [2024-10-24 15:05:19,609 INFO L125 PetriNetUnfolderBase]: For 1218/1218 co-relation queries the response was YES. [2024-10-24 15:05:19,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15656 conditions, 12666 events. 2033/12666 cut-off events. For 1218/1218 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 149755 event pairs, 1720 based on Foata normal form. 1/11381 useless extension candidates. Maximal degree in co-relation 15591. Up to 2506 conditions per place. [2024-10-24 15:05:19,801 INFO L140 encePairwiseOnDemand]: 328/331 looper letters, 24 selfloop transitions, 2 changer transitions 0/301 dead transitions. [2024-10-24 15:05:19,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 301 transitions, 688 flow [2024-10-24 15:05:19,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 15:05:19,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 15:05:19,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 873 transitions. [2024-10-24 15:05:19,804 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.879154078549849 [2024-10-24 15:05:19,804 INFO L175 Difference]: Start difference. First operand has 305 places, 300 transitions, 632 flow. Second operand 3 states and 873 transitions. [2024-10-24 15:05:19,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 301 transitions, 688 flow [2024-10-24 15:05:19,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 301 transitions, 676 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-24 15:05:19,814 INFO L231 Difference]: Finished difference. Result has 303 places, 301 transitions, 634 flow [2024-10-24 15:05:19,815 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=634, PETRI_PLACES=303, PETRI_TRANSITIONS=301} [2024-10-24 15:05:19,816 INFO L277 CegarLoopForPetriNet]: 313 programPoint places, -10 predicate places. [2024-10-24 15:05:19,816 INFO L471 AbstractCegarLoop]: Abstraction has has 303 places, 301 transitions, 634 flow [2024-10-24 15:05:19,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 283.6666666666667) internal successors, (851), 3 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:05:19,816 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:05:19,818 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:05:19,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-24 15:05:19,819 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-24 15:05:19,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:05:19,820 INFO L85 PathProgramCache]: Analyzing trace with hash 748736817, now seen corresponding path program 1 times [2024-10-24 15:05:19,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:05:19,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101098498] [2024-10-24 15:05:19,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:19,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:05:19,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:05:19,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:05:19,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:05:19,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101098498] [2024-10-24 15:05:19,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101098498] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 15:05:19,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169260927] [2024-10-24 15:05:19,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:19,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 15:05:19,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 15:05:19,931 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 15:05:19,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-24 15:05:20,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:05:20,066 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 15:05:20,067 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 15:05:20,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:05:20,098 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 15:05:20,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:05:20,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169260927] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 15:05:20,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 15:05:20,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-24 15:05:20,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027090488] [2024-10-24 15:05:20,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 15:05:20,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 15:05:20,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:05:20,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 15:05:20,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-24 15:05:20,228 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 331 [2024-10-24 15:05:20,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 301 transitions, 634 flow. Second operand has 10 states, 10 states have (on average 280.9) internal successors, (2809), 10 states have internal predecessors, (2809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:05:20,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:05:20,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 331 [2024-10-24 15:05:20,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:05:22,188 INFO L124 PetriNetUnfolderBase]: 2033/12681 cut-off events. [2024-10-24 15:05:22,189 INFO L125 PetriNetUnfolderBase]: For 1217/1217 co-relation queries the response was YES. [2024-10-24 15:05:22,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15679 conditions, 12681 events. 2033/12681 cut-off events. For 1217/1217 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 149708 event pairs, 1720 based on Foata normal form. 2/11397 useless extension candidates. Maximal degree in co-relation 15626. Up to 2506 conditions per place. [2024-10-24 15:05:22,421 INFO L140 encePairwiseOnDemand]: 325/331 looper letters, 28 selfloop transitions, 9 changer transitions 0/309 dead transitions. [2024-10-24 15:05:22,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 309 transitions, 726 flow [2024-10-24 15:05:22,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 15:05:22,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-24 15:05:22,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2550 transitions. [2024-10-24 15:05:22,425 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8559919436052367 [2024-10-24 15:05:22,425 INFO L175 Difference]: Start difference. First operand has 303 places, 301 transitions, 634 flow. Second operand 9 states and 2550 transitions. [2024-10-24 15:05:22,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 309 transitions, 726 flow [2024-10-24 15:05:22,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 309 transitions, 724 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 15:05:22,435 INFO L231 Difference]: Finished difference. Result has 313 places, 307 transitions, 682 flow [2024-10-24 15:05:22,436 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=682, PETRI_PLACES=313, PETRI_TRANSITIONS=307} [2024-10-24 15:05:22,436 INFO L277 CegarLoopForPetriNet]: 313 programPoint places, 0 predicate places. [2024-10-24 15:05:22,437 INFO L471 AbstractCegarLoop]: Abstraction has has 313 places, 307 transitions, 682 flow [2024-10-24 15:05:22,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 280.9) internal successors, (2809), 10 states have internal predecessors, (2809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:05:22,438 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:05:22,438 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] [2024-10-24 15:05:22,455 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-24 15:05:22,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 15:05:22,639 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-24 15:05:22,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:05:22,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1736235855, now seen corresponding path program 2 times [2024-10-24 15:05:22,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:05:22,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201306617] [2024-10-24 15:05:22,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:22,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:05:22,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:05:22,809 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:05:22,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:05:22,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201306617] [2024-10-24 15:05:22,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201306617] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 15:05:22,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198089000] [2024-10-24 15:05:22,810 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 15:05:22,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 15:05:22,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 15:05:22,812 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 15:05:22,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-24 15:05:22,936 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 15:05:22,936 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 15:05:22,937 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-24 15:05:22,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 15:05:22,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-10-24 15:05:22,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2024-10-24 15:05:23,026 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 15:05:23,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2024-10-24 15:05:23,074 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 15:05:23,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2024-10-24 15:05:23,104 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-10-24 15:05:23,105 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 15:05:23,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198089000] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:05:23,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 15:05:23,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2024-10-24 15:05:23,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284164339] [2024-10-24 15:05:23,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:05:23,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 15:05:23,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:05:23,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 15:05:23,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-10-24 15:05:23,349 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 331 [2024-10-24 15:05:23,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 307 transitions, 682 flow. Second operand has 6 states, 6 states have (on average 274.3333333333333) internal successors, (1646), 6 states have internal predecessors, (1646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:05:23,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:05:23,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 331 [2024-10-24 15:05:23,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:05:27,273 INFO L124 PetriNetUnfolderBase]: 6000/23864 cut-off events. [2024-10-24 15:05:27,274 INFO L125 PetriNetUnfolderBase]: For 2301/2301 co-relation queries the response was YES. [2024-10-24 15:05:27,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33119 conditions, 23864 events. 6000/23864 cut-off events. For 2301/2301 co-relation queries the response was YES. Maximal size of possible extension queue 637. Compared 297495 event pairs, 2095 based on Foata normal form. 0/21342 useless extension candidates. Maximal degree in co-relation 33009. Up to 3186 conditions per place. [2024-10-24 15:05:27,721 INFO L140 encePairwiseOnDemand]: 325/331 looper letters, 90 selfloop transitions, 5 changer transitions 0/366 dead transitions. [2024-10-24 15:05:27,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 366 transitions, 1050 flow [2024-10-24 15:05:27,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 15:05:27,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 15:05:27,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1728 transitions. [2024-10-24 15:05:27,724 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8700906344410876 [2024-10-24 15:05:27,724 INFO L175 Difference]: Start difference. First operand has 313 places, 307 transitions, 682 flow. Second operand 6 states and 1728 transitions. [2024-10-24 15:05:27,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 366 transitions, 1050 flow [2024-10-24 15:05:27,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 366 transitions, 1044 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-24 15:05:27,736 INFO L231 Difference]: Finished difference. Result has 316 places, 306 transitions, 684 flow [2024-10-24 15:05:27,737 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=684, PETRI_PLACES=316, PETRI_TRANSITIONS=306} [2024-10-24 15:05:27,737 INFO L277 CegarLoopForPetriNet]: 313 programPoint places, 3 predicate places. [2024-10-24 15:05:27,738 INFO L471 AbstractCegarLoop]: Abstraction has has 316 places, 306 transitions, 684 flow [2024-10-24 15:05:27,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 274.3333333333333) internal successors, (1646), 6 states have internal predecessors, (1646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:05:27,738 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:05:27,739 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:05:27,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-24 15:05:27,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 15:05:27,944 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-24 15:05:27,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:05:27,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1461545599, now seen corresponding path program 1 times [2024-10-24 15:05:27,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:05:27,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267601555] [2024-10-24 15:05:27,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:27,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:05:27,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:05:28,104 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-10-24 15:05:28,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:05:28,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267601555] [2024-10-24 15:05:28,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267601555] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 15:05:28,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430254977] [2024-10-24 15:05:28,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:28,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 15:05:28,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 15:05:28,107 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 15:05:28,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-24 15:05:28,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:05:28,256 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 15:05:28,258 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 15:05:28,331 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-10-24 15:05:28,331 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 15:05:28,444 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-10-24 15:05:28,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430254977] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 15:05:28,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 15:05:28,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-24 15:05:28,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385042972] [2024-10-24 15:05:28,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 15:05:28,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-24 15:05:28,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:05:28,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-24 15:05:28,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-10-24 15:05:28,529 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 331 [2024-10-24 15:05:28,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 306 transitions, 684 flow. Second operand has 15 states, 15 states have (on average 281.26666666666665) internal successors, (4219), 15 states have internal predecessors, (4219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:05:28,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:05:28,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 331 [2024-10-24 15:05:28,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:05:31,101 INFO L124 PetriNetUnfolderBase]: 2033/12719 cut-off events. [2024-10-24 15:05:31,101 INFO L125 PetriNetUnfolderBase]: For 1235/1235 co-relation queries the response was YES. [2024-10-24 15:05:31,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15771 conditions, 12719 events. 2033/12719 cut-off events. For 1235/1235 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 149693 event pairs, 1720 based on Foata normal form. 3/11437 useless extension candidates. Maximal degree in co-relation 15592. Up to 2506 conditions per place. [2024-10-24 15:05:31,320 INFO L140 encePairwiseOnDemand]: 325/331 looper letters, 31 selfloop transitions, 18 changer transitions 0/320 dead transitions. [2024-10-24 15:05:31,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 320 transitions, 850 flow [2024-10-24 15:05:31,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-24 15:05:31,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-24 15:05:31,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5074 transitions. [2024-10-24 15:05:31,326 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8516280631084256 [2024-10-24 15:05:31,326 INFO L175 Difference]: Start difference. First operand has 316 places, 306 transitions, 684 flow. Second operand 18 states and 5074 transitions. [2024-10-24 15:05:31,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 320 transitions, 850 flow [2024-10-24 15:05:31,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 320 transitions, 840 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-24 15:05:31,338 INFO L231 Difference]: Finished difference. Result has 332 places, 316 transitions, 780 flow [2024-10-24 15:05:31,339 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=780, PETRI_PLACES=332, PETRI_TRANSITIONS=316} [2024-10-24 15:05:31,340 INFO L277 CegarLoopForPetriNet]: 313 programPoint places, 19 predicate places. [2024-10-24 15:05:31,340 INFO L471 AbstractCegarLoop]: Abstraction has has 332 places, 316 transitions, 780 flow [2024-10-24 15:05:31,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 281.26666666666665) internal successors, (4219), 15 states have internal predecessors, (4219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:05:31,342 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:05:31,342 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:05:31,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-24 15:05:31,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 15:05:31,543 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-24 15:05:31,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:05:31,543 INFO L85 PathProgramCache]: Analyzing trace with hash -792654581, now seen corresponding path program 2 times [2024-10-24 15:05:31,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:05:31,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387969430] [2024-10-24 15:05:31,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:31,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:05:31,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:05:31,587 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 15:05:31,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:05:31,626 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 15:05:31,628 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 15:05:31,629 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2024-10-24 15:05:31,629 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2024-10-24 15:05:31,629 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2024-10-24 15:05:31,629 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2024-10-24 15:05:31,630 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2024-10-24 15:05:31,630 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2024-10-24 15:05:31,630 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2024-10-24 15:05:31,630 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2024-10-24 15:05:31,630 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2024-10-24 15:05:31,630 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2024-10-24 15:05:31,631 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2024-10-24 15:05:31,631 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2024-10-24 15:05:31,631 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2024-10-24 15:05:31,631 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2024-10-24 15:05:31,631 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2024-10-24 15:05:31,631 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2024-10-24 15:05:31,631 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2024-10-24 15:05:31,632 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2024-10-24 15:05:31,632 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2024-10-24 15:05:31,632 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2024-10-24 15:05:31,632 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2024-10-24 15:05:31,633 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2024-10-24 15:05:31,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-24 15:05:31,633 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2024-10-24 15:05:31,634 WARN L239 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-24 15:05:31,634 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-10-24 15:05:31,696 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 15:05:31,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 378 places, 400 transitions, 840 flow [2024-10-24 15:05:31,792 INFO L124 PetriNetUnfolderBase]: 38/453 cut-off events. [2024-10-24 15:05:31,792 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-10-24 15:05:31,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 479 conditions, 453 events. 38/453 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1560 event pairs, 0 based on Foata normal form. 0/388 useless extension candidates. Maximal degree in co-relation 386. Up to 12 conditions per place. [2024-10-24 15:05:31,802 INFO L82 GeneralOperation]: Start removeDead. Operand has 378 places, 400 transitions, 840 flow [2024-10-24 15:05:31,807 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 378 places, 400 transitions, 840 flow [2024-10-24 15:05:31,808 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 15:05:31,809 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;@b41fa21, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 15:05:31,809 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-10-24 15:05:31,813 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 15:05:31,813 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-10-24 15:05:31,813 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 15:05:31,814 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:05:31,814 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:05:31,814 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2024-10-24 15:05:31,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:05:31,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1842639091, now seen corresponding path program 1 times [2024-10-24 15:05:31,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:05:31,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33210992] [2024-10-24 15:05:31,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:31,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:05:31,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:05:32,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:05:32,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:05:32,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33210992] [2024-10-24 15:05:32,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33210992] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:05:32,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:05:32,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 15:05:32,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552280048] [2024-10-24 15:05:32,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:05:32,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 15:05:32,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:05:32,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 15:05:32,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-24 15:05:32,325 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 400 [2024-10-24 15:05:32,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 400 transitions, 840 flow. Second operand has 6 states, 6 states have (on average 315.5) internal successors, (1893), 6 states have internal predecessors, (1893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:05:32,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:05:32,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 400 [2024-10-24 15:05:32,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand