./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/pthread-ext/11_fmaxsymopt-race.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/pthread-ext/11_fmaxsymopt-race.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c885fc256284ed3b5456c69b30daa307e14001acfa6c144983451f9519cbd1fd --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 14:06:47,563 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 14:06:47,615 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-11-10 14:06:47,619 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 14:06:47,622 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 14:06:47,654 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 14:06:47,654 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 14:06:47,655 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 14:06:47,655 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 14:06:47,655 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 14:06:47,656 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 14:06:47,656 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 14:06:47,656 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 14:06:47,656 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 14:06:47,657 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 14:06:47,657 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 14:06:47,659 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 14:06:47,662 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 14:06:47,662 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 14:06:47,662 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 14:06:47,663 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 14:06:47,663 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 14:06:47,663 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-10 14:06:47,664 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 14:06:47,666 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 14:06:47,666 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 14:06:47,666 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 14:06:47,666 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 14:06:47,666 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 14:06:47,667 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 14:06:47,667 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 14:06:47,667 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 14:06:47,667 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 14:06:47,667 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 14:06:47,667 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 14:06:47,668 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 14:06:47,668 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 14:06:47,668 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 14:06:47,668 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 14:06:47,668 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 14:06:47,668 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 14:06:47,671 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c885fc256284ed3b5456c69b30daa307e14001acfa6c144983451f9519cbd1fd [2024-11-10 14:06:47,848 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 14:06:47,870 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 14:06:47,874 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 14:06:47,875 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 14:06:47,875 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 14:06:47,876 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/11_fmaxsymopt-race.i [2024-11-10 14:06:49,194 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 14:06:49,416 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 14:06:49,416 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/11_fmaxsymopt-race.i [2024-11-10 14:06:49,426 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd6189ac6/062067f66d8c4afe82a761bf3d9dbe6d/FLAG35864dda2 [2024-11-10 14:06:49,438 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd6189ac6/062067f66d8c4afe82a761bf3d9dbe6d [2024-11-10 14:06:49,440 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 14:06:49,446 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 14:06:49,448 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 14:06:49,448 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 14:06:49,452 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 14:06:49,454 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 02:06:49" (1/1) ... [2024-11-10 14:06:49,455 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d9d01d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:06:49, skipping insertion in model container [2024-11-10 14:06:49,455 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 02:06:49" (1/1) ... [2024-11-10 14:06:49,492 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 14:06:49,787 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 14:06:49,799 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 14:06:49,869 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 14:06:49,942 INFO L204 MainTranslator]: Completed translation [2024-11-10 14:06:49,942 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:06:49 WrapperNode [2024-11-10 14:06:49,942 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 14:06:49,943 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 14:06:49,943 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 14:06:49,943 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 14:06:49,948 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:06:49" (1/1) ... [2024-11-10 14:06:49,956 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:06:49" (1/1) ... [2024-11-10 14:06:49,971 INFO L138 Inliner]: procedures = 164, calls = 27, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 108 [2024-11-10 14:06:49,971 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 14:06:49,971 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 14:06:49,972 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 14:06:49,972 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 14:06:49,977 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:06:49" (1/1) ... [2024-11-10 14:06:49,977 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:06:49" (1/1) ... [2024-11-10 14:06:49,980 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:06:49" (1/1) ... [2024-11-10 14:06:49,980 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:06:49" (1/1) ... [2024-11-10 14:06:49,984 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:06:49" (1/1) ... [2024-11-10 14:06:49,984 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:06:49" (1/1) ... [2024-11-10 14:06:49,985 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:06:49" (1/1) ... [2024-11-10 14:06:49,986 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:06:49" (1/1) ... [2024-11-10 14:06:49,987 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 14:06:49,988 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 14:06:49,988 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 14:06:49,988 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 14:06:49,989 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:06:49" (1/1) ... [2024-11-10 14:06:49,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 14:06:50,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:06:50,015 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) [2024-11-10 14:06:50,025 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 [2024-11-10 14:06:50,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-10 14:06:50,054 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-10 14:06:50,054 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-10 14:06:50,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-10 14:06:50,054 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-10 14:06:50,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 14:06:50,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-10 14:06:50,055 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-10 14:06:50,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 14:06:50,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 14:06:50,056 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 14:06:50,193 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 14:06:50,195 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 14:06:50,421 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 14:06:50,422 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 14:06:50,449 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 14:06:50,449 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 14:06:50,450 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 02:06:50 BoogieIcfgContainer [2024-11-10 14:06:50,450 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 14:06:50,453 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 14:06:50,453 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 14:06:50,456 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 14:06:50,456 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 02:06:49" (1/3) ... [2024-11-10 14:06:50,457 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a6eb97c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 02:06:50, skipping insertion in model container [2024-11-10 14:06:50,457 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:06:49" (2/3) ... [2024-11-10 14:06:50,458 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a6eb97c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 02:06:50, skipping insertion in model container [2024-11-10 14:06:50,458 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 02:06:50" (3/3) ... [2024-11-10 14:06:50,459 INFO L112 eAbstractionObserver]: Analyzing ICFG 11_fmaxsymopt-race.i [2024-11-10 14:06:50,473 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 14:06:50,473 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-11-10 14:06:50,474 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 14:06:50,549 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 14:06:50,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 129 transitions, 262 flow [2024-11-10 14:06:50,635 INFO L124 PetriNetUnfolderBase]: 12/139 cut-off events. [2024-11-10 14:06:50,636 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 14:06:50,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 139 events. 12/139 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 198 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 83. Up to 4 conditions per place. [2024-11-10 14:06:50,645 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 129 transitions, 262 flow [2024-11-10 14:06:50,650 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 129 transitions, 262 flow [2024-11-10 14:06:50,663 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 14:06:50,671 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;@64ebc8d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 14:06:50,673 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-11-10 14:06:50,689 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 14:06:50,692 INFO L124 PetriNetUnfolderBase]: 2/53 cut-off events. [2024-11-10 14:06:50,693 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 14:06:50,693 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:06:50,693 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] [2024-11-10 14:06:50,694 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-11-10 14:06:50,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:06:50,700 INFO L85 PathProgramCache]: Analyzing trace with hash 296857979, now seen corresponding path program 1 times [2024-11-10 14:06:50,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:06:50,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592245609] [2024-11-10 14:06:50,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:06:50,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:06:50,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:06:51,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:06:51,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:06:51,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592245609] [2024-11-10 14:06:51,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592245609] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:06:51,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:06:51,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 14:06:51,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327947677] [2024-11-10 14:06:51,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:06:51,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 14:06:51,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:06:51,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 14:06:51,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-10 14:06:51,596 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 129 [2024-11-10 14:06:51,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 129 transitions, 262 flow. Second operand has 6 states, 6 states have (on average 102.5) internal successors, (615), 6 states have internal predecessors, (615), 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) [2024-11-10 14:06:51,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:06:51,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 129 [2024-11-10 14:06:51,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 14:06:51,644 INFO L124 PetriNetUnfolderBase]: 5/121 cut-off events. [2024-11-10 14:06:51,645 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-10 14:06:51,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 121 events. 5/121 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 136 event pairs, 0 based on Foata normal form. 21/131 useless extension candidates. Maximal degree in co-relation 78. Up to 14 conditions per place. [2024-11-10 14:06:51,647 INFO L140 encePairwiseOnDemand]: 116/129 looper letters, 13 selfloop transitions, 5 changer transitions 0/116 dead transitions. [2024-11-10 14:06:51,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 116 transitions, 272 flow [2024-11-10 14:06:51,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 14:06:51,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 14:06:51,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 632 transitions. [2024-11-10 14:06:51,661 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8165374677002584 [2024-11-10 14:06:51,662 INFO L175 Difference]: Start difference. First operand has 121 places, 129 transitions, 262 flow. Second operand 6 states and 632 transitions. [2024-11-10 14:06:51,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 116 transitions, 272 flow [2024-11-10 14:06:51,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 116 transitions, 272 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 14:06:51,669 INFO L231 Difference]: Finished difference. Result has 119 places, 116 transitions, 246 flow [2024-11-10 14:06:51,671 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=246, PETRI_PLACES=119, PETRI_TRANSITIONS=116} [2024-11-10 14:06:51,673 INFO L277 CegarLoopForPetriNet]: 121 programPoint places, -2 predicate places. [2024-11-10 14:06:51,674 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 116 transitions, 246 flow [2024-11-10 14:06:51,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 102.5) internal successors, (615), 6 states have internal predecessors, (615), 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) [2024-11-10 14:06:51,674 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:06:51,675 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:06:51,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 14:06:51,675 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-11-10 14:06:51,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:06:51,676 INFO L85 PathProgramCache]: Analyzing trace with hash -837726804, now seen corresponding path program 1 times [2024-11-10 14:06:51,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:06:51,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214801882] [2024-11-10 14:06:51,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:06:51,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:06:51,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:06:51,713 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 14:06:51,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:06:51,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214801882] [2024-11-10 14:06:51,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214801882] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:06:51,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:06:51,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 14:06:51,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930617103] [2024-11-10 14:06:51,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:06:51,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 14:06:51,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:06:51,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 14:06:51,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 14:06:51,738 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 129 [2024-11-10 14:06:51,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 116 transitions, 246 flow. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 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) [2024-11-10 14:06:51,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:06:51,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 129 [2024-11-10 14:06:51,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 14:06:51,761 INFO L124 PetriNetUnfolderBase]: 5/134 cut-off events. [2024-11-10 14:06:51,764 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 14:06:51,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 134 events. 5/134 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 130 event pairs, 0 based on Foata normal form. 1/125 useless extension candidates. Maximal degree in co-relation 96. Up to 9 conditions per place. [2024-11-10 14:06:51,765 INFO L140 encePairwiseOnDemand]: 126/129 looper letters, 7 selfloop transitions, 2 changer transitions 0/117 dead transitions. [2024-11-10 14:06:51,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 117 transitions, 268 flow [2024-11-10 14:06:51,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 14:06:51,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 14:06:51,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 346 transitions. [2024-11-10 14:06:51,768 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8940568475452196 [2024-11-10 14:06:51,769 INFO L175 Difference]: Start difference. First operand has 119 places, 116 transitions, 246 flow. Second operand 3 states and 346 transitions. [2024-11-10 14:06:51,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 117 transitions, 268 flow [2024-11-10 14:06:51,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 117 transitions, 256 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-10 14:06:51,773 INFO L231 Difference]: Finished difference. Result has 117 places, 117 transitions, 248 flow [2024-11-10 14:06:51,773 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=117, PETRI_TRANSITIONS=117} [2024-11-10 14:06:51,775 INFO L277 CegarLoopForPetriNet]: 121 programPoint places, -4 predicate places. [2024-11-10 14:06:51,776 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 117 transitions, 248 flow [2024-11-10 14:06:51,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 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) [2024-11-10 14:06:51,776 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:06:51,776 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:06:51,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 14:06:51,777 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-11-10 14:06:51,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:06:51,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1329128756, now seen corresponding path program 1 times [2024-11-10 14:06:51,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:06:51,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85239577] [2024-11-10 14:06:51,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:06:51,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:06:51,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:06:51,864 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 14:06:51,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:06:51,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85239577] [2024-11-10 14:06:51,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85239577] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:06:51,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350845771] [2024-11-10 14:06:51,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:06:51,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:06:51,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:06:51,872 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) [2024-11-10 14:06:51,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 14:06:51,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:06:51,944 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 14:06:51,949 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:06:52,013 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 14:06:52,014 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:06:52,056 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 14:06:52,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350845771] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:06:52,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:06:52,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-10 14:06:52,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576906259] [2024-11-10 14:06:52,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:06:52,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 14:06:52,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:06:52,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 14:06:52,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-10 14:06:52,128 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 129 [2024-11-10 14:06:52,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 117 transitions, 248 flow. Second operand has 10 states, 10 states have (on average 110.9) internal successors, (1109), 10 states have internal predecessors, (1109), 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) [2024-11-10 14:06:52,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:06:52,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 129 [2024-11-10 14:06:52,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 14:06:52,236 INFO L124 PetriNetUnfolderBase]: 5/151 cut-off events. [2024-11-10 14:06:52,238 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-11-10 14:06:52,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 151 events. 5/151 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 106 event pairs, 0 based on Foata normal form. 2/143 useless extension candidates. Maximal degree in co-relation 133. Up to 9 conditions per place. [2024-11-10 14:06:52,240 INFO L140 encePairwiseOnDemand]: 123/129 looper letters, 11 selfloop transitions, 9 changer transitions 0/125 dead transitions. [2024-11-10 14:06:52,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 125 transitions, 306 flow [2024-11-10 14:06:52,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 14:06:52,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-10 14:06:52,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1003 transitions. [2024-11-10 14:06:52,244 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8639104220499569 [2024-11-10 14:06:52,244 INFO L175 Difference]: Start difference. First operand has 117 places, 117 transitions, 248 flow. Second operand 9 states and 1003 transitions. [2024-11-10 14:06:52,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 125 transitions, 306 flow [2024-11-10 14:06:52,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 125 transitions, 304 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 14:06:52,248 INFO L231 Difference]: Finished difference. Result has 127 places, 123 transitions, 296 flow [2024-11-10 14:06:52,248 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=296, PETRI_PLACES=127, PETRI_TRANSITIONS=123} [2024-11-10 14:06:52,249 INFO L277 CegarLoopForPetriNet]: 121 programPoint places, 6 predicate places. [2024-11-10 14:06:52,249 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 123 transitions, 296 flow [2024-11-10 14:06:52,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 110.9) internal successors, (1109), 10 states have internal predecessors, (1109), 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) [2024-11-10 14:06:52,250 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:06:52,251 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:06:52,266 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 14:06:52,456 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 [2024-11-10 14:06:52,458 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-11-10 14:06:52,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:06:52,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1217639156, now seen corresponding path program 2 times [2024-11-10 14:06:52,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:06:52,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558674062] [2024-11-10 14:06:52,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:06:52,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:06:52,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:06:52,606 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 14:06:52,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:06:52,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558674062] [2024-11-10 14:06:52,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558674062] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:06:52,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003703081] [2024-11-10 14:06:52,606 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 14:06:52,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:06:52,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:06:52,610 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) [2024-11-10 14:06:52,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 14:06:52,691 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 14:06:52,691 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 14:06:52,693 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 14:06:52,694 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:06:52,766 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 14:06:52,768 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:06:52,855 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 14:06:52,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003703081] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:06:52,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:06:52,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-10 14:06:52,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364859276] [2024-11-10 14:06:52,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:06:52,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-10 14:06:52,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:06:52,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-10 14:06:52,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-10 14:06:52,930 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 129 [2024-11-10 14:06:52,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 123 transitions, 296 flow. Second operand has 15 states, 15 states have (on average 111.06666666666666) internal successors, (1666), 15 states have internal predecessors, (1666), 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) [2024-11-10 14:06:52,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:06:52,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 129 [2024-11-10 14:06:52,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 14:06:53,055 INFO L124 PetriNetUnfolderBase]: 5/193 cut-off events. [2024-11-10 14:06:53,055 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2024-11-10 14:06:53,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 193 events. 5/193 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 106 event pairs, 0 based on Foata normal form. 3/186 useless extension candidates. Maximal degree in co-relation 194. Up to 9 conditions per place. [2024-11-10 14:06:53,056 INFO L140 encePairwiseOnDemand]: 123/129 looper letters, 14 selfloop transitions, 18 changer transitions 0/137 dead transitions. [2024-11-10 14:06:53,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 137 transitions, 434 flow [2024-11-10 14:06:53,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-10 14:06:53,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-10 14:06:53,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1997 transitions. [2024-11-10 14:06:53,060 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8600344530577089 [2024-11-10 14:06:53,060 INFO L175 Difference]: Start difference. First operand has 127 places, 123 transitions, 296 flow. Second operand 18 states and 1997 transitions. [2024-11-10 14:06:53,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 137 transitions, 434 flow [2024-11-10 14:06:53,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 137 transitions, 422 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-11-10 14:06:53,064 INFO L231 Difference]: Finished difference. Result has 147 places, 133 transitions, 396 flow [2024-11-10 14:06:53,064 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=396, PETRI_PLACES=147, PETRI_TRANSITIONS=133} [2024-11-10 14:06:53,064 INFO L277 CegarLoopForPetriNet]: 121 programPoint places, 26 predicate places. [2024-11-10 14:06:53,065 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 133 transitions, 396 flow [2024-11-10 14:06:53,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 111.06666666666666) internal successors, (1666), 15 states have internal predecessors, (1666), 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) [2024-11-10 14:06:53,066 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:06:53,066 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:06:53,082 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 14:06:53,267 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 [2024-11-10 14:06:53,268 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-11-10 14:06:53,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:06:53,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1981944940, now seen corresponding path program 3 times [2024-11-10 14:06:53,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:06:53,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821326430] [2024-11-10 14:06:53,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:06:53,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:06:53,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 14:06:53,320 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 14:06:53,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 14:06:53,367 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 14:06:53,368 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 14:06:53,369 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2024-11-10 14:06:53,370 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2024-11-10 14:06:53,371 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2024-11-10 14:06:53,371 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2024-11-10 14:06:53,371 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2024-11-10 14:06:53,371 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2024-11-10 14:06:53,371 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2024-11-10 14:06:53,371 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2024-11-10 14:06:53,372 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2024-11-10 14:06:53,372 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2024-11-10 14:06:53,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 14:06:53,372 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-11-10 14:06:53,374 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 14:06:53,375 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-10 14:06:53,419 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 14:06:53,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 187 places, 201 transitions, 412 flow [2024-11-10 14:06:53,457 INFO L124 PetriNetUnfolderBase]: 21/223 cut-off events. [2024-11-10 14:06:53,461 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 14:06:53,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 223 events. 21/223 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 516 event pairs, 0 based on Foata normal form. 0/190 useless extension candidates. Maximal degree in co-relation 154. Up to 6 conditions per place. [2024-11-10 14:06:53,464 INFO L82 GeneralOperation]: Start removeDead. Operand has 187 places, 201 transitions, 412 flow [2024-11-10 14:06:53,469 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 187 places, 201 transitions, 412 flow [2024-11-10 14:06:53,470 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 14:06:53,471 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;@64ebc8d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 14:06:53,471 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-11-10 14:06:53,478 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 14:06:53,478 INFO L124 PetriNetUnfolderBase]: 2/53 cut-off events. [2024-11-10 14:06:53,478 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 14:06:53,479 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:06:53,479 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] [2024-11-10 14:06:53,479 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-11-10 14:06:53,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:06:53,479 INFO L85 PathProgramCache]: Analyzing trace with hash 358804923, now seen corresponding path program 1 times [2024-11-10 14:06:53,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:06:53,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612648533] [2024-11-10 14:06:53,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:06:53,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:06:53,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:06:53,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:06:53,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:06:53,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612648533] [2024-11-10 14:06:53,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612648533] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:06:53,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:06:53,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 14:06:53,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126227849] [2024-11-10 14:06:53,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:06:53,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 14:06:53,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:06:53,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 14:06:53,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-10 14:06:53,871 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 201 [2024-11-10 14:06:53,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 201 transitions, 412 flow. Second operand has 6 states, 6 states have (on average 162.5) internal successors, (975), 6 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:06:53,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:06:53,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 201 [2024-11-10 14:06:53,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 14:06:53,972 INFO L124 PetriNetUnfolderBase]: 90/625 cut-off events. [2024-11-10 14:06:53,973 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-11-10 14:06:53,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 781 conditions, 625 events. 90/625 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3506 event pairs, 42 based on Foata normal form. 179/708 useless extension candidates. Maximal degree in co-relation 322. Up to 125 conditions per place. [2024-11-10 14:06:53,977 INFO L140 encePairwiseOnDemand]: 184/201 looper letters, 20 selfloop transitions, 5 changer transitions 0/182 dead transitions. [2024-11-10 14:06:53,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 182 transitions, 424 flow [2024-11-10 14:06:53,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 14:06:53,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 14:06:53,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1003 transitions. [2024-11-10 14:06:53,979 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8316749585406302 [2024-11-10 14:06:53,979 INFO L175 Difference]: Start difference. First operand has 187 places, 201 transitions, 412 flow. Second operand 6 states and 1003 transitions. [2024-11-10 14:06:53,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 182 transitions, 424 flow [2024-11-10 14:06:53,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 182 transitions, 424 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 14:06:53,982 INFO L231 Difference]: Finished difference. Result has 183 places, 182 transitions, 384 flow [2024-11-10 14:06:53,982 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=384, PETRI_PLACES=183, PETRI_TRANSITIONS=182} [2024-11-10 14:06:53,983 INFO L277 CegarLoopForPetriNet]: 187 programPoint places, -4 predicate places. [2024-11-10 14:06:53,983 INFO L471 AbstractCegarLoop]: Abstraction has has 183 places, 182 transitions, 384 flow [2024-11-10 14:06:53,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 162.5) internal successors, (975), 6 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:06:53,984 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:06:53,984 INFO L204 CegarLoopForPetriNet]: trace histogram [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, 1] [2024-11-10 14:06:53,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 14:06:53,984 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-11-10 14:06:53,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:06:53,985 INFO L85 PathProgramCache]: Analyzing trace with hash 862013545, now seen corresponding path program 1 times [2024-11-10 14:06:53,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:06:53,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921454064] [2024-11-10 14:06:53,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:06:53,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:06:53,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:06:54,010 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-10 14:06:54,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:06:54,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921454064] [2024-11-10 14:06:54,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921454064] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:06:54,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:06:54,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 14:06:54,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968932590] [2024-11-10 14:06:54,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:06:54,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 14:06:54,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:06:54,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 14:06:54,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 14:06:54,048 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 201 [2024-11-10 14:06:54,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 182 transitions, 384 flow. Second operand has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:06:54,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:06:54,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 201 [2024-11-10 14:06:54,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 14:06:54,087 INFO L124 PetriNetUnfolderBase]: 23/361 cut-off events. [2024-11-10 14:06:54,087 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-10 14:06:54,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 411 conditions, 361 events. 23/361 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1198 event pairs, 6 based on Foata normal form. 1/321 useless extension candidates. Maximal degree in co-relation 347. Up to 24 conditions per place. [2024-11-10 14:06:54,089 INFO L140 encePairwiseOnDemand]: 198/201 looper letters, 10 selfloop transitions, 2 changer transitions 0/183 dead transitions. [2024-11-10 14:06:54,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 183 transitions, 412 flow [2024-11-10 14:06:54,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 14:06:54,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 14:06:54,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 541 transitions. [2024-11-10 14:06:54,091 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8971807628524047 [2024-11-10 14:06:54,091 INFO L175 Difference]: Start difference. First operand has 183 places, 182 transitions, 384 flow. Second operand 3 states and 541 transitions. [2024-11-10 14:06:54,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 183 transitions, 412 flow [2024-11-10 14:06:54,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 183 transitions, 400 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-10 14:06:54,093 INFO L231 Difference]: Finished difference. Result has 181 places, 183 transitions, 386 flow [2024-11-10 14:06:54,093 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=386, PETRI_PLACES=181, PETRI_TRANSITIONS=183} [2024-11-10 14:06:54,095 INFO L277 CegarLoopForPetriNet]: 187 programPoint places, -6 predicate places. [2024-11-10 14:06:54,095 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 183 transitions, 386 flow [2024-11-10 14:06:54,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:06:54,097 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:06:54,097 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 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] [2024-11-10 14:06:54,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 14:06:54,097 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-11-10 14:06:54,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:06:54,098 INFO L85 PathProgramCache]: Analyzing trace with hash -87137879, now seen corresponding path program 1 times [2024-11-10 14:06:54,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:06:54,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906539319] [2024-11-10 14:06:54,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:06:54,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:06:54,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:06:54,178 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-10 14:06:54,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:06:54,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906539319] [2024-11-10 14:06:54,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906539319] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:06:54,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832603628] [2024-11-10 14:06:54,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:06:54,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:06:54,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:06:54,182 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) [2024-11-10 14:06:54,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 14:06:54,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:06:54,242 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 14:06:54,244 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:06:54,298 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-10 14:06:54,299 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:06:54,354 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-10 14:06:54,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832603628] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:06:54,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:06:54,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-10 14:06:54,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053424661] [2024-11-10 14:06:54,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:06:54,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 14:06:54,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:06:54,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 14:06:54,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-10 14:06:54,462 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 201 [2024-11-10 14:06:54,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 183 transitions, 386 flow. Second operand has 10 states, 10 states have (on average 175.0) internal successors, (1750), 10 states have internal predecessors, (1750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:06:54,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:06:54,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 201 [2024-11-10 14:06:54,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 14:06:54,574 INFO L124 PetriNetUnfolderBase]: 23/378 cut-off events. [2024-11-10 14:06:54,574 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-11-10 14:06:54,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 436 conditions, 378 events. 23/378 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1174 event pairs, 6 based on Foata normal form. 2/339 useless extension candidates. Maximal degree in co-relation 384. Up to 24 conditions per place. [2024-11-10 14:06:54,576 INFO L140 encePairwiseOnDemand]: 195/201 looper letters, 14 selfloop transitions, 9 changer transitions 0/191 dead transitions. [2024-11-10 14:06:54,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 191 transitions, 450 flow [2024-11-10 14:06:54,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 14:06:54,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-10 14:06:54,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1582 transitions. [2024-11-10 14:06:54,579 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8745163073521283 [2024-11-10 14:06:54,579 INFO L175 Difference]: Start difference. First operand has 181 places, 183 transitions, 386 flow. Second operand 9 states and 1582 transitions. [2024-11-10 14:06:54,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 191 transitions, 450 flow [2024-11-10 14:06:54,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 191 transitions, 448 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 14:06:54,581 INFO L231 Difference]: Finished difference. Result has 191 places, 189 transitions, 434 flow [2024-11-10 14:06:54,582 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=434, PETRI_PLACES=191, PETRI_TRANSITIONS=189} [2024-11-10 14:06:54,582 INFO L277 CegarLoopForPetriNet]: 187 programPoint places, 4 predicate places. [2024-11-10 14:06:54,582 INFO L471 AbstractCegarLoop]: Abstraction has has 191 places, 189 transitions, 434 flow [2024-11-10 14:06:54,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 175.0) internal successors, (1750), 10 states have internal predecessors, (1750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:06:54,583 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:06:54,583 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 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] [2024-11-10 14:06:54,596 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 14:06:54,784 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 [2024-11-10 14:06:54,784 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-11-10 14:06:54,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:06:54,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1458373673, now seen corresponding path program 2 times [2024-11-10 14:06:54,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:06:54,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301798793] [2024-11-10 14:06:54,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:06:54,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:06:54,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:06:54,928 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-10 14:06:54,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:06:54,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301798793] [2024-11-10 14:06:54,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301798793] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:06:54,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523803188] [2024-11-10 14:06:54,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 14:06:54,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:06:54,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:06:54,931 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) [2024-11-10 14:06:54,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 14:06:55,015 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 14:06:55,015 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 14:06:55,017 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 14:06:55,018 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:06:55,083 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-10 14:06:55,083 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:06:55,178 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-10 14:06:55,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523803188] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:06:55,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:06:55,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-10 14:06:55,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023992223] [2024-11-10 14:06:55,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:06:55,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-10 14:06:55,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:06:55,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-10 14:06:55,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-10 14:06:55,255 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 201 [2024-11-10 14:06:55,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 189 transitions, 434 flow. Second operand has 15 states, 15 states have (on average 175.13333333333333) internal successors, (2627), 15 states have internal predecessors, (2627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:06:55,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:06:55,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 201 [2024-11-10 14:06:55,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 14:06:55,451 INFO L124 PetriNetUnfolderBase]: 23/420 cut-off events. [2024-11-10 14:06:55,452 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2024-11-10 14:06:55,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 532 conditions, 420 events. 23/420 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1177 event pairs, 6 based on Foata normal form. 3/382 useless extension candidates. Maximal degree in co-relation 344. Up to 24 conditions per place. [2024-11-10 14:06:55,454 INFO L140 encePairwiseOnDemand]: 195/201 looper letters, 17 selfloop transitions, 18 changer transitions 0/203 dead transitions. [2024-11-10 14:06:55,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 203 transitions, 578 flow [2024-11-10 14:06:55,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-10 14:06:55,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-10 14:06:55,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3152 transitions. [2024-11-10 14:06:55,460 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.871199557766722 [2024-11-10 14:06:55,461 INFO L175 Difference]: Start difference. First operand has 191 places, 189 transitions, 434 flow. Second operand 18 states and 3152 transitions. [2024-11-10 14:06:55,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 203 transitions, 578 flow [2024-11-10 14:06:55,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 203 transitions, 566 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-11-10 14:06:55,465 INFO L231 Difference]: Finished difference. Result has 211 places, 199 transitions, 534 flow [2024-11-10 14:06:55,465 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=534, PETRI_PLACES=211, PETRI_TRANSITIONS=199} [2024-11-10 14:06:55,465 INFO L277 CegarLoopForPetriNet]: 187 programPoint places, 24 predicate places. [2024-11-10 14:06:55,466 INFO L471 AbstractCegarLoop]: Abstraction has has 211 places, 199 transitions, 534 flow [2024-11-10 14:06:55,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 175.13333333333333) internal successors, (2627), 15 states have internal predecessors, (2627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:06:55,467 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:06:55,467 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2024-11-10 14:06:55,485 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-10 14:06:55,667 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 [2024-11-10 14:06:55,668 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-11-10 14:06:55,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:06:55,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1716383767, now seen corresponding path program 3 times [2024-11-10 14:06:55,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:06:55,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536278528] [2024-11-10 14:06:55,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:06:55,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:06:55,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 14:06:55,696 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 14:06:55,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 14:06:55,726 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 14:06:55,726 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 14:06:55,727 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2024-11-10 14:06:55,727 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 14 remaining) [2024-11-10 14:06:55,727 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 14 remaining) [2024-11-10 14:06:55,727 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 14 remaining) [2024-11-10 14:06:55,727 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 14 remaining) [2024-11-10 14:06:55,727 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 14 remaining) [2024-11-10 14:06:55,727 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 14 remaining) [2024-11-10 14:06:55,728 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 14 remaining) [2024-11-10 14:06:55,728 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 14 remaining) [2024-11-10 14:06:55,728 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 14 remaining) [2024-11-10 14:06:55,728 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 14 remaining) [2024-11-10 14:06:55,728 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 14 remaining) [2024-11-10 14:06:55,728 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 14 remaining) [2024-11-10 14:06:55,728 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 14 remaining) [2024-11-10 14:06:55,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-10 14:06:55,728 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-11-10 14:06:55,729 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 14:06:55,729 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-10 14:06:55,753 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 14:06:55,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 253 places, 273 transitions, 564 flow [2024-11-10 14:06:55,778 INFO L124 PetriNetUnfolderBase]: 30/307 cut-off events. [2024-11-10 14:06:55,778 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-10 14:06:55,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 320 conditions, 307 events. 30/307 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 921 event pairs, 0 based on Foata normal form. 0/260 useless extension candidates. Maximal degree in co-relation 227. Up to 8 conditions per place. [2024-11-10 14:06:55,781 INFO L82 GeneralOperation]: Start removeDead. Operand has 253 places, 273 transitions, 564 flow [2024-11-10 14:06:55,783 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 253 places, 273 transitions, 564 flow [2024-11-10 14:06:55,784 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 14:06:55,784 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;@64ebc8d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 14:06:55,784 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-10 14:06:55,787 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 14:06:55,787 INFO L124 PetriNetUnfolderBase]: 2/53 cut-off events. [2024-11-10 14:06:55,787 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 14:06:55,787 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:06:55,787 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] [2024-11-10 14:06:55,787 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-11-10 14:06:55,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:06:55,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1212189691, now seen corresponding path program 1 times [2024-11-10 14:06:55,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:06:55,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362953144] [2024-11-10 14:06:55,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:06:55,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:06:55,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:06:55,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:06:55,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:06:55,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362953144] [2024-11-10 14:06:55,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362953144] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:06:55,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:06:55,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 14:06:55,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684760814] [2024-11-10 14:06:55,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:06:55,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 14:06:55,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:06:55,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 14:06:55,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-10 14:06:56,036 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 273 [2024-11-10 14:06:56,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 273 transitions, 564 flow. Second operand has 6 states, 6 states have (on average 222.5) internal successors, (1335), 6 states have internal predecessors, (1335), 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) [2024-11-10 14:06:56,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:06:56,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 273 [2024-11-10 14:06:56,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 14:06:56,526 INFO L124 PetriNetUnfolderBase]: 1081/4272 cut-off events. [2024-11-10 14:06:56,526 INFO L125 PetriNetUnfolderBase]: For 364/364 co-relation queries the response was YES. [2024-11-10 14:06:56,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5818 conditions, 4272 events. 1081/4272 cut-off events. For 364/364 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 40683 event pairs, 630 based on Foata normal form. 1516/5001 useless extension candidates. Maximal degree in co-relation 1508. Up to 1318 conditions per place. [2024-11-10 14:06:56,556 INFO L140 encePairwiseOnDemand]: 252/273 looper letters, 27 selfloop transitions, 5 changer transitions 0/248 dead transitions. [2024-11-10 14:06:56,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 248 transitions, 578 flow [2024-11-10 14:06:56,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 14:06:56,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 14:06:56,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1374 transitions. [2024-11-10 14:06:56,558 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8388278388278388 [2024-11-10 14:06:56,558 INFO L175 Difference]: Start difference. First operand has 253 places, 273 transitions, 564 flow. Second operand 6 states and 1374 transitions. [2024-11-10 14:06:56,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 248 transitions, 578 flow [2024-11-10 14:06:56,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 248 transitions, 576 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-10 14:06:56,562 INFO L231 Difference]: Finished difference. Result has 247 places, 248 transitions, 522 flow [2024-11-10 14:06:56,563 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=522, PETRI_PLACES=247, PETRI_TRANSITIONS=248} [2024-11-10 14:06:56,563 INFO L277 CegarLoopForPetriNet]: 253 programPoint places, -6 predicate places. [2024-11-10 14:06:56,563 INFO L471 AbstractCegarLoop]: Abstraction has has 247 places, 248 transitions, 522 flow [2024-11-10 14:06:56,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 222.5) internal successors, (1335), 6 states have internal predecessors, (1335), 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) [2024-11-10 14:06:56,564 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:06:56,564 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 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] [2024-11-10 14:06:56,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-10 14:06:56,564 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-11-10 14:06:56,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:06:56,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1811362819, now seen corresponding path program 1 times [2024-11-10 14:06:56,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:06:56,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905719340] [2024-11-10 14:06:56,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:06:56,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:06:56,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:06:56,583 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-10 14:06:56,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:06:56,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905719340] [2024-11-10 14:06:56,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905719340] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:06:56,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:06:56,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 14:06:56,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250912147] [2024-11-10 14:06:56,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:06:56,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 14:06:56,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:06:56,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 14:06:56,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 14:06:56,612 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 273 [2024-11-10 14:06:56,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 248 transitions, 522 flow. Second operand has 3 states, 3 states have (on average 242.33333333333334) internal successors, (727), 3 states have internal predecessors, (727), 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) [2024-11-10 14:06:56,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:06:56,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 273 [2024-11-10 14:06:56,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 14:06:56,712 INFO L124 PetriNetUnfolderBase]: 95/1060 cut-off events. [2024-11-10 14:06:56,712 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2024-11-10 14:06:56,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1201 conditions, 1060 events. 95/1060 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 6412 event pairs, 42 based on Foata normal form. 1/926 useless extension candidates. Maximal degree in co-relation 1136. Up to 87 conditions per place. [2024-11-10 14:06:56,722 INFO L140 encePairwiseOnDemand]: 270/273 looper letters, 13 selfloop transitions, 2 changer transitions 0/249 dead transitions. [2024-11-10 14:06:56,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 249 transitions, 556 flow [2024-11-10 14:06:56,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 14:06:56,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 14:06:56,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 736 transitions. [2024-11-10 14:06:56,724 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8986568986568987 [2024-11-10 14:06:56,724 INFO L175 Difference]: Start difference. First operand has 247 places, 248 transitions, 522 flow. Second operand 3 states and 736 transitions. [2024-11-10 14:06:56,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 249 transitions, 556 flow [2024-11-10 14:06:56,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 249 transitions, 544 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-10 14:06:56,727 INFO L231 Difference]: Finished difference. Result has 245 places, 249 transitions, 524 flow [2024-11-10 14:06:56,728 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=524, PETRI_PLACES=245, PETRI_TRANSITIONS=249} [2024-11-10 14:06:56,728 INFO L277 CegarLoopForPetriNet]: 253 programPoint places, -8 predicate places. [2024-11-10 14:06:56,728 INFO L471 AbstractCegarLoop]: Abstraction has has 245 places, 249 transitions, 524 flow [2024-11-10 14:06:56,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 242.33333333333334) internal successors, (727), 3 states have internal predecessors, (727), 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) [2024-11-10 14:06:56,729 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:06:56,729 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 3, 3, 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] [2024-11-10 14:06:56,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-10 14:06:56,729 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-11-10 14:06:56,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:06:56,729 INFO L85 PathProgramCache]: Analyzing trace with hash -21982627, now seen corresponding path program 1 times [2024-11-10 14:06:56,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:06:56,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633514778] [2024-11-10 14:06:56,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:06:56,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:06:56,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:06:56,813 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-10 14:06:56,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:06:56,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633514778] [2024-11-10 14:06:56,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633514778] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:06:56,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978070261] [2024-11-10 14:06:56,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:06:56,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:06:56,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:06:56,815 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) [2024-11-10 14:06:56,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 14:06:56,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:06:56,895 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 14:06:56,896 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:06:56,917 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-10 14:06:56,917 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:06:56,948 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-10 14:06:56,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978070261] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:06:56,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:06:56,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-10 14:06:56,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605737236] [2024-11-10 14:06:56,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:06:56,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 14:06:56,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:06:56,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 14:06:56,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-10 14:06:56,999 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 273 [2024-11-10 14:06:57,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 249 transitions, 524 flow. Second operand has 10 states, 10 states have (on average 239.1) internal successors, (2391), 10 states have internal predecessors, (2391), 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) [2024-11-10 14:06:57,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:06:57,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 273 [2024-11-10 14:06:57,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 14:06:57,140 INFO L124 PetriNetUnfolderBase]: 95/1077 cut-off events. [2024-11-10 14:06:57,140 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2024-11-10 14:06:57,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1226 conditions, 1077 events. 95/1077 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 6386 event pairs, 42 based on Foata normal form. 2/944 useless extension candidates. Maximal degree in co-relation 1173. Up to 87 conditions per place. [2024-11-10 14:06:57,150 INFO L140 encePairwiseOnDemand]: 267/273 looper letters, 17 selfloop transitions, 9 changer transitions 0/257 dead transitions. [2024-11-10 14:06:57,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 257 transitions, 594 flow [2024-11-10 14:06:57,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 14:06:57,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-10 14:06:57,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2161 transitions. [2024-11-10 14:06:57,153 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8795278795278795 [2024-11-10 14:06:57,153 INFO L175 Difference]: Start difference. First operand has 245 places, 249 transitions, 524 flow. Second operand 9 states and 2161 transitions. [2024-11-10 14:06:57,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 257 transitions, 594 flow [2024-11-10 14:06:57,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 257 transitions, 592 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 14:06:57,157 INFO L231 Difference]: Finished difference. Result has 255 places, 255 transitions, 572 flow [2024-11-10 14:06:57,157 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=572, PETRI_PLACES=255, PETRI_TRANSITIONS=255} [2024-11-10 14:06:57,158 INFO L277 CegarLoopForPetriNet]: 253 programPoint places, 2 predicate places. [2024-11-10 14:06:57,158 INFO L471 AbstractCegarLoop]: Abstraction has has 255 places, 255 transitions, 572 flow [2024-11-10 14:06:57,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 239.1) internal successors, (2391), 10 states have internal predecessors, (2391), 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) [2024-11-10 14:06:57,159 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:06:57,159 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 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] [2024-11-10 14:06:57,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-10 14:06:57,359 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 [2024-11-10 14:06:57,360 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-11-10 14:06:57,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:06:57,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1650861853, now seen corresponding path program 2 times [2024-11-10 14:06:57,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:06:57,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397019960] [2024-11-10 14:06:57,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:06:57,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:06:57,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:06:57,454 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-10 14:06:57,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:06:57,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397019960] [2024-11-10 14:06:57,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397019960] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:06:57,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769939303] [2024-11-10 14:06:57,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 14:06:57,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:06:57,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:06:57,458 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) [2024-11-10 14:06:57,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 14:06:57,546 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 14:06:57,546 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 14:06:57,547 INFO L255 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 14:06:57,568 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:06:57,631 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-10 14:06:57,631 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:06:57,720 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-10 14:06:57,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769939303] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:06:57,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:06:57,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-10 14:06:57,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135117250] [2024-11-10 14:06:57,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:06:57,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-10 14:06:57,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:06:57,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-10 14:06:57,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-10 14:06:57,792 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 273 [2024-11-10 14:06:57,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 255 transitions, 572 flow. Second operand has 15 states, 15 states have (on average 239.2) internal successors, (3588), 15 states have internal predecessors, (3588), 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) [2024-11-10 14:06:57,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:06:57,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 273 [2024-11-10 14:06:57,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 14:06:58,053 INFO L124 PetriNetUnfolderBase]: 95/1119 cut-off events. [2024-11-10 14:06:58,053 INFO L125 PetriNetUnfolderBase]: For 114/114 co-relation queries the response was YES. [2024-11-10 14:06:58,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1322 conditions, 1119 events. 95/1119 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 6386 event pairs, 42 based on Foata normal form. 3/987 useless extension candidates. Maximal degree in co-relation 1133. Up to 87 conditions per place. [2024-11-10 14:06:58,062 INFO L140 encePairwiseOnDemand]: 267/273 looper letters, 20 selfloop transitions, 18 changer transitions 0/269 dead transitions. [2024-11-10 14:06:58,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 269 transitions, 722 flow [2024-11-10 14:06:58,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-10 14:06:58,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-10 14:06:58,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4307 transitions. [2024-11-10 14:06:58,067 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8764753764753764 [2024-11-10 14:06:58,067 INFO L175 Difference]: Start difference. First operand has 255 places, 255 transitions, 572 flow. Second operand 18 states and 4307 transitions. [2024-11-10 14:06:58,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 269 transitions, 722 flow [2024-11-10 14:06:58,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 269 transitions, 710 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-11-10 14:06:58,071 INFO L231 Difference]: Finished difference. Result has 275 places, 265 transitions, 672 flow [2024-11-10 14:06:58,072 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=672, PETRI_PLACES=275, PETRI_TRANSITIONS=265} [2024-11-10 14:06:58,072 INFO L277 CegarLoopForPetriNet]: 253 programPoint places, 22 predicate places. [2024-11-10 14:06:58,072 INFO L471 AbstractCegarLoop]: Abstraction has has 275 places, 265 transitions, 672 flow [2024-11-10 14:06:58,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 239.2) internal successors, (3588), 15 states have internal predecessors, (3588), 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) [2024-11-10 14:06:58,073 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:06:58,074 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 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] [2024-11-10 14:06:58,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-10 14:06:58,274 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 [2024-11-10 14:06:58,274 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-11-10 14:06:58,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:06:58,274 INFO L85 PathProgramCache]: Analyzing trace with hash -686843331, now seen corresponding path program 3 times [2024-11-10 14:06:58,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:06:58,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534330396] [2024-11-10 14:06:58,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:06:58,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:06:58,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 14:06:58,296 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 14:06:58,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 14:06:58,315 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 14:06:58,315 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 14:06:58,315 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2024-11-10 14:06:58,315 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (16 of 18 remaining) [2024-11-10 14:06:58,315 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (15 of 18 remaining) [2024-11-10 14:06:58,316 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 18 remaining) [2024-11-10 14:06:58,316 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 18 remaining) [2024-11-10 14:06:58,316 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (12 of 18 remaining) [2024-11-10 14:06:58,316 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 18 remaining) [2024-11-10 14:06:58,316 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 18 remaining) [2024-11-10 14:06:58,316 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 18 remaining) [2024-11-10 14:06:58,316 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 18 remaining) [2024-11-10 14:06:58,316 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 18 remaining) [2024-11-10 14:06:58,316 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 18 remaining) [2024-11-10 14:06:58,316 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 18 remaining) [2024-11-10 14:06:58,316 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 18 remaining) [2024-11-10 14:06:58,316 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 18 remaining) [2024-11-10 14:06:58,316 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 18 remaining) [2024-11-10 14:06:58,316 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 18 remaining) [2024-11-10 14:06:58,316 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 18 remaining) [2024-11-10 14:06:58,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-10 14:06:58,316 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-11-10 14:06:58,317 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 14:06:58,317 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-10 14:06:58,342 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 14:06:58,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 319 places, 345 transitions, 718 flow [2024-11-10 14:06:58,378 INFO L124 PetriNetUnfolderBase]: 39/391 cut-off events. [2024-11-10 14:06:58,378 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-10 14:06:58,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 410 conditions, 391 events. 39/391 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1343 event pairs, 0 based on Foata normal form. 0/330 useless extension candidates. Maximal degree in co-relation 315. Up to 10 conditions per place. [2024-11-10 14:06:58,381 INFO L82 GeneralOperation]: Start removeDead. Operand has 319 places, 345 transitions, 718 flow [2024-11-10 14:06:58,383 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 319 places, 345 transitions, 718 flow [2024-11-10 14:06:58,383 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 14:06:58,384 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;@64ebc8d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 14:06:58,384 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-11-10 14:06:58,386 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 14:06:58,386 INFO L124 PetriNetUnfolderBase]: 2/53 cut-off events. [2024-11-10 14:06:58,386 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 14:06:58,386 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:06:58,386 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] [2024-11-10 14:06:58,386 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-10 14:06:58,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:06:58,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1437955013, now seen corresponding path program 1 times [2024-11-10 14:06:58,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:06:58,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324269800] [2024-11-10 14:06:58,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:06:58,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:06:58,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:06:58,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:06:58,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:06:58,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324269800] [2024-11-10 14:06:58,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324269800] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:06:58,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:06:58,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 14:06:58,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10272670] [2024-11-10 14:06:58,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:06:58,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 14:06:58,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:06:58,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 14:06:58,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-10 14:06:58,693 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 345 [2024-11-10 14:06:58,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 345 transitions, 718 flow. Second operand has 6 states, 6 states have (on average 282.5) internal successors, (1695), 6 states have internal predecessors, (1695), 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) [2024-11-10 14:06:58,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:06:58,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 345 [2024-11-10 14:06:58,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 14:07:03,261 INFO L124 PetriNetUnfolderBase]: 10790/32017 cut-off events. [2024-11-10 14:07:03,261 INFO L125 PetriNetUnfolderBase]: For 4202/4202 co-relation queries the response was YES. [2024-11-10 14:07:03,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46446 conditions, 32017 events. 10790/32017 cut-off events. For 4202/4202 co-relation queries the response was YES. Maximal size of possible extension queue 1425. Compared 398691 event pairs, 6804 based on Foata normal form. 12467/38160 useless extension candidates. Maximal degree in co-relation 5819. Up to 12485 conditions per place. [2024-11-10 14:07:03,897 INFO L140 encePairwiseOnDemand]: 320/345 looper letters, 34 selfloop transitions, 5 changer transitions 0/314 dead transitions. [2024-11-10 14:07:03,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 314 transitions, 734 flow [2024-11-10 14:07:03,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 14:07:03,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 14:07:03,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1745 transitions. [2024-11-10 14:07:03,902 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8429951690821256 [2024-11-10 14:07:03,902 INFO L175 Difference]: Start difference. First operand has 319 places, 345 transitions, 718 flow. Second operand 6 states and 1745 transitions. [2024-11-10 14:07:03,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 314 transitions, 734 flow [2024-11-10 14:07:03,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 314 transitions, 728 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-10 14:07:03,908 INFO L231 Difference]: Finished difference. Result has 311 places, 314 transitions, 660 flow [2024-11-10 14:07:03,908 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=660, PETRI_PLACES=311, PETRI_TRANSITIONS=314} [2024-11-10 14:07:03,909 INFO L277 CegarLoopForPetriNet]: 319 programPoint places, -8 predicate places. [2024-11-10 14:07:03,909 INFO L471 AbstractCegarLoop]: Abstraction has has 311 places, 314 transitions, 660 flow [2024-11-10 14:07:03,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 282.5) internal successors, (1695), 6 states have internal predecessors, (1695), 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) [2024-11-10 14:07:03,910 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:07:03,910 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] [2024-11-10 14:07:03,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-10 14:07:03,910 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-10 14:07:03,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:07:03,912 INFO L85 PathProgramCache]: Analyzing trace with hash 527492680, now seen corresponding path program 1 times [2024-11-10 14:07:03,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:07:03,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974698827] [2024-11-10 14:07:03,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:07:03,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:07:03,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:07:03,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:07:03,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:07:03,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974698827] [2024-11-10 14:07:03,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974698827] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:07:03,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:07:03,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 14:07:03,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447429943] [2024-11-10 14:07:03,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:07:03,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 14:07:03,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:07:03,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 14:07:03,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 14:07:03,998 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 345 [2024-11-10 14:07:03,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 314 transitions, 660 flow. Second operand has 3 states, 3 states have (on average 306.0) internal successors, (918), 3 states have internal predecessors, (918), 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) [2024-11-10 14:07:03,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:07:03,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 345 [2024-11-10 14:07:03,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 14:07:04,470 INFO L124 PetriNetUnfolderBase]: 365/3211 cut-off events. [2024-11-10 14:07:04,470 INFO L125 PetriNetUnfolderBase]: For 282/282 co-relation queries the response was YES. [2024-11-10 14:07:04,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3677 conditions, 3211 events. 365/3211 cut-off events. For 282/282 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 28002 event pairs, 204 based on Foata normal form. 1/2795 useless extension candidates. Maximal degree in co-relation 3611. Up to 330 conditions per place. [2024-11-10 14:07:04,509 INFO L140 encePairwiseOnDemand]: 342/345 looper letters, 16 selfloop transitions, 2 changer transitions 0/315 dead transitions. [2024-11-10 14:07:04,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 315 transitions, 700 flow [2024-11-10 14:07:04,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 14:07:04,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 14:07:04,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 931 transitions. [2024-11-10 14:07:04,510 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8995169082125604 [2024-11-10 14:07:04,510 INFO L175 Difference]: Start difference. First operand has 311 places, 314 transitions, 660 flow. Second operand 3 states and 931 transitions. [2024-11-10 14:07:04,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 315 transitions, 700 flow [2024-11-10 14:07:04,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 315 transitions, 688 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-10 14:07:04,514 INFO L231 Difference]: Finished difference. Result has 309 places, 315 transitions, 662 flow [2024-11-10 14:07:04,515 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=662, PETRI_PLACES=309, PETRI_TRANSITIONS=315} [2024-11-10 14:07:04,515 INFO L277 CegarLoopForPetriNet]: 319 programPoint places, -10 predicate places. [2024-11-10 14:07:04,515 INFO L471 AbstractCegarLoop]: Abstraction has has 309 places, 315 transitions, 662 flow [2024-11-10 14:07:04,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 306.0) internal successors, (918), 3 states have internal predecessors, (918), 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) [2024-11-10 14:07:04,516 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:07:04,516 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:07:04,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-10 14:07:04,516 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-10 14:07:04,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:07:04,516 INFO L85 PathProgramCache]: Analyzing trace with hash -184534328, now seen corresponding path program 1 times [2024-11-10 14:07:04,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:07:04,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473030725] [2024-11-10 14:07:04,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:07:04,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:07:04,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:07:04,564 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:07:04,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:07:04,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473030725] [2024-11-10 14:07:04,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473030725] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:07:04,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021325167] [2024-11-10 14:07:04,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:07:04,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:07:04,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:07:04,566 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) [2024-11-10 14:07:04,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 14:07:04,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:07:04,652 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-10 14:07:04,653 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:07:04,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 14:07:04,666 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 14:07:04,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021325167] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:07:04,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 14:07:04,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-10 14:07:04,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70116251] [2024-11-10 14:07:04,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:07:04,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 14:07:04,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:07:04,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 14:07:04,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-10 14:07:04,698 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 345 [2024-11-10 14:07:04,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 315 transitions, 662 flow. Second operand has 3 states, 3 states have (on average 305.3333333333333) internal successors, (916), 3 states have internal predecessors, (916), 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) [2024-11-10 14:07:04,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:07:04,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 345 [2024-11-10 14:07:04,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 14:07:05,740 INFO L124 PetriNetUnfolderBase]: 1176/7841 cut-off events. [2024-11-10 14:07:05,740 INFO L125 PetriNetUnfolderBase]: For 692/692 co-relation queries the response was YES. [2024-11-10 14:07:05,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9457 conditions, 7841 events. 1176/7841 cut-off events. For 692/692 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 85800 event pairs, 690 based on Foata normal form. 40/6768 useless extension candidates. Maximal degree in co-relation 9408. Up to 1091 conditions per place. [2024-11-10 14:07:05,855 INFO L140 encePairwiseOnDemand]: 342/345 looper letters, 27 selfloop transitions, 2 changer transitions 0/325 dead transitions. [2024-11-10 14:07:05,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 325 transitions, 755 flow [2024-11-10 14:07:05,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 14:07:05,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 14:07:05,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 939 transitions. [2024-11-10 14:07:05,857 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9072463768115943 [2024-11-10 14:07:05,857 INFO L175 Difference]: Start difference. First operand has 309 places, 315 transitions, 662 flow. Second operand 3 states and 939 transitions. [2024-11-10 14:07:05,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 325 transitions, 755 flow [2024-11-10 14:07:05,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 325 transitions, 753 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 14:07:05,863 INFO L231 Difference]: Finished difference. Result has 311 places, 316 transitions, 672 flow [2024-11-10 14:07:05,863 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=660, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=672, PETRI_PLACES=311, PETRI_TRANSITIONS=316} [2024-11-10 14:07:05,863 INFO L277 CegarLoopForPetriNet]: 319 programPoint places, -8 predicate places. [2024-11-10 14:07:05,863 INFO L471 AbstractCegarLoop]: Abstraction has has 311 places, 316 transitions, 672 flow [2024-11-10 14:07:05,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 305.3333333333333) internal successors, (916), 3 states have internal predecessors, (916), 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) [2024-11-10 14:07:05,864 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:07:05,864 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:07:05,876 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-10 14:07:06,064 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 [2024-11-10 14:07:06,067 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-10 14:07:06,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:07:06,067 INFO L85 PathProgramCache]: Analyzing trace with hash -326702611, now seen corresponding path program 1 times [2024-11-10 14:07:06,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:07:06,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852580278] [2024-11-10 14:07:06,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:07:06,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:07:06,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:07:06,191 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:07:06,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:07:06,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852580278] [2024-11-10 14:07:06,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852580278] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:07:06,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048274029] [2024-11-10 14:07:06,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:07:06,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:07:06,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:07:06,193 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) [2024-11-10 14:07:06,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-10 14:07:06,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:07:06,298 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 14:07:06,299 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:07:06,325 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:07:06,325 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:07:06,357 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:07:06,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048274029] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:07:06,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:07:06,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-10 14:07:06,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761631830] [2024-11-10 14:07:06,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:07:06,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 14:07:06,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:07:06,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 14:07:06,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-10 14:07:06,421 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 345 [2024-11-10 14:07:06,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 316 transitions, 672 flow. Second operand has 10 states, 10 states have (on average 302.9) internal successors, (3029), 10 states have internal predecessors, (3029), 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) [2024-11-10 14:07:06,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:07:06,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 345 [2024-11-10 14:07:06,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 14:07:07,000 INFO L124 PetriNetUnfolderBase]: 366/3248 cut-off events. [2024-11-10 14:07:07,000 INFO L125 PetriNetUnfolderBase]: For 284/284 co-relation queries the response was YES. [2024-11-10 14:07:07,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3727 conditions, 3248 events. 366/3248 cut-off events. For 284/284 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 27775 event pairs, 204 based on Foata normal form. 2/2828 useless extension candidates. Maximal degree in co-relation 3627. Up to 330 conditions per place. [2024-11-10 14:07:07,048 INFO L140 encePairwiseOnDemand]: 339/345 looper letters, 20 selfloop transitions, 9 changer transitions 0/324 dead transitions. [2024-11-10 14:07:07,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 324 transitions, 748 flow [2024-11-10 14:07:07,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 14:07:07,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-10 14:07:07,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2740 transitions. [2024-11-10 14:07:07,051 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8824476650563607 [2024-11-10 14:07:07,051 INFO L175 Difference]: Start difference. First operand has 311 places, 316 transitions, 672 flow. Second operand 9 states and 2740 transitions. [2024-11-10 14:07:07,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 324 transitions, 748 flow [2024-11-10 14:07:07,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 324 transitions, 746 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 14:07:07,057 INFO L231 Difference]: Finished difference. Result has 321 places, 322 transitions, 720 flow [2024-11-10 14:07:07,057 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=720, PETRI_PLACES=321, PETRI_TRANSITIONS=322} [2024-11-10 14:07:07,057 INFO L277 CegarLoopForPetriNet]: 319 programPoint places, 2 predicate places. [2024-11-10 14:07:07,057 INFO L471 AbstractCegarLoop]: Abstraction has has 321 places, 322 transitions, 720 flow [2024-11-10 14:07:07,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 302.9) internal successors, (3029), 10 states have internal predecessors, (3029), 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) [2024-11-10 14:07:07,058 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:07:07,059 INFO L204 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:07:07,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-10 14:07:07,262 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 [2024-11-10 14:07:07,262 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-10 14:07:07,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:07:07,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1656376595, now seen corresponding path program 2 times [2024-11-10 14:07:07,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:07:07,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935221120] [2024-11-10 14:07:07,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:07:07,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:07:07,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:07:07,391 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:07:07,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:07:07,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935221120] [2024-11-10 14:07:07,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935221120] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:07:07,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173130450] [2024-11-10 14:07:07,392 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 14:07:07,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:07:07,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:07:07,394 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) [2024-11-10 14:07:07,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-10 14:07:07,489 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 14:07:07,489 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 14:07:07,490 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-10 14:07:07,492 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:07:07,519 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 [2024-11-10 14:07:07,532 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 [2024-11-10 14:07:07,556 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 14:07:07,556 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 [2024-11-10 14:07:07,588 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 14:07:07,588 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 [2024-11-10 14:07:07,609 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-10 14:07:07,609 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 14:07:07,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173130450] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:07:07,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 14:07:07,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2024-11-10 14:07:07,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145382782] [2024-11-10 14:07:07,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:07:07,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 14:07:07,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:07:07,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 14:07:07,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-10 14:07:07,831 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 345 [2024-11-10 14:07:07,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 322 transitions, 720 flow. Second operand has 6 states, 6 states have (on average 296.3333333333333) internal successors, (1778), 6 states have internal predecessors, (1778), 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) [2024-11-10 14:07:07,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:07:07,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 345 [2024-11-10 14:07:07,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 14:07:09,787 INFO L124 PetriNetUnfolderBase]: 1957/10462 cut-off events. [2024-11-10 14:07:09,787 INFO L125 PetriNetUnfolderBase]: For 1261/1261 co-relation queries the response was YES. [2024-11-10 14:07:09,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13515 conditions, 10462 events. 1957/10462 cut-off events. For 1261/1261 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 116992 event pairs, 609 based on Foata normal form. 0/9148 useless extension candidates. Maximal degree in co-relation 13401. Up to 983 conditions per place. [2024-11-10 14:07:10,076 INFO L140 encePairwiseOnDemand]: 339/345 looper letters, 58 selfloop transitions, 6 changer transitions 0/357 dead transitions. [2024-11-10 14:07:10,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 357 transitions, 978 flow [2024-11-10 14:07:10,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 14:07:10,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 14:07:10,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1828 transitions. [2024-11-10 14:07:10,082 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8830917874396135 [2024-11-10 14:07:10,082 INFO L175 Difference]: Start difference. First operand has 321 places, 322 transitions, 720 flow. Second operand 6 states and 1828 transitions. [2024-11-10 14:07:10,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 357 transitions, 978 flow [2024-11-10 14:07:10,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 357 transitions, 972 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-10 14:07:10,098 INFO L231 Difference]: Finished difference. Result has 324 places, 321 transitions, 724 flow [2024-11-10 14:07:10,098 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=712, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=724, PETRI_PLACES=324, PETRI_TRANSITIONS=321} [2024-11-10 14:07:10,099 INFO L277 CegarLoopForPetriNet]: 319 programPoint places, 5 predicate places. [2024-11-10 14:07:10,099 INFO L471 AbstractCegarLoop]: Abstraction has has 324 places, 321 transitions, 724 flow [2024-11-10 14:07:10,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 296.3333333333333) internal successors, (1778), 6 states have internal predecessors, (1778), 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) [2024-11-10 14:07:10,103 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:07:10,103 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 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] [2024-11-10 14:07:10,115 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-10 14:07:10,303 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 [2024-11-10 14:07:10,304 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-10 14:07:10,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:07:10,305 INFO L85 PathProgramCache]: Analyzing trace with hash -319515672, now seen corresponding path program 1 times [2024-11-10 14:07:10,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:07:10,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478116538] [2024-11-10 14:07:10,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:07:10,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:07:10,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:07:10,451 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-10 14:07:10,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:07:10,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478116538] [2024-11-10 14:07:10,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478116538] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:07:10,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572331051] [2024-11-10 14:07:10,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:07:10,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:07:10,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:07:10,455 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 14:07:10,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-10 14:07:10,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:07:10,573 INFO L255 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 14:07:10,575 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:07:10,644 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-10 14:07:10,644 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:07:10,728 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-10 14:07:10,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572331051] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:07:10,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:07:10,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-10 14:07:10,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572717757] [2024-11-10 14:07:10,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:07:10,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-10 14:07:10,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:07:10,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-10 14:07:10,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-10 14:07:10,817 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 345 [2024-11-10 14:07:10,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 321 transitions, 724 flow. Second operand has 15 states, 15 states have (on average 303.26666666666665) internal successors, (4549), 15 states have internal predecessors, (4549), 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) [2024-11-10 14:07:10,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:07:10,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 345 [2024-11-10 14:07:10,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 14:07:11,515 INFO L124 PetriNetUnfolderBase]: 365/3290 cut-off events. [2024-11-10 14:07:11,515 INFO L125 PetriNetUnfolderBase]: For 328/328 co-relation queries the response was YES. [2024-11-10 14:07:11,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3828 conditions, 3290 events. 365/3290 cut-off events. For 328/328 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 27826 event pairs, 204 based on Foata normal form. 3/2873 useless extension candidates. Maximal degree in co-relation 3642. Up to 330 conditions per place. [2024-11-10 14:07:11,560 INFO L140 encePairwiseOnDemand]: 339/345 looper letters, 23 selfloop transitions, 18 changer transitions 0/335 dead transitions. [2024-11-10 14:07:11,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 335 transitions, 874 flow [2024-11-10 14:07:11,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-10 14:07:11,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-10 14:07:11,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5462 transitions. [2024-11-10 14:07:11,565 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.879549114331723 [2024-11-10 14:07:11,565 INFO L175 Difference]: Start difference. First operand has 324 places, 321 transitions, 724 flow. Second operand 18 states and 5462 transitions. [2024-11-10 14:07:11,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 335 transitions, 874 flow [2024-11-10 14:07:11,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 335 transitions, 862 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-10 14:07:11,570 INFO L231 Difference]: Finished difference. Result has 340 places, 331 transitions, 818 flow [2024-11-10 14:07:11,570 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=712, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=818, PETRI_PLACES=340, PETRI_TRANSITIONS=331} [2024-11-10 14:07:11,571 INFO L277 CegarLoopForPetriNet]: 319 programPoint places, 21 predicate places. [2024-11-10 14:07:11,571 INFO L471 AbstractCegarLoop]: Abstraction has has 340 places, 331 transitions, 818 flow [2024-11-10 14:07:11,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 303.26666666666665) internal successors, (4549), 15 states have internal predecessors, (4549), 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) [2024-11-10 14:07:11,573 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:07:11,573 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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] [2024-11-10 14:07:11,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-10 14:07:11,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-10 14:07:11,774 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-10 14:07:11,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:07:11,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1833004696, now seen corresponding path program 2 times [2024-11-10 14:07:11,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:07:11,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510148488] [2024-11-10 14:07:11,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:07:11,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:07:11,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 14:07:11,809 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 14:07:11,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 14:07:11,844 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 14:07:11,845 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 14:07:11,845 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2024-11-10 14:07:11,845 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2024-11-10 14:07:11,845 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2024-11-10 14:07:11,845 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2024-11-10 14:07:11,845 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2024-11-10 14:07:11,845 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2024-11-10 14:07:11,845 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2024-11-10 14:07:11,845 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2024-11-10 14:07:11,846 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2024-11-10 14:07:11,846 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2024-11-10 14:07:11,846 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2024-11-10 14:07:11,846 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2024-11-10 14:07:11,846 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2024-11-10 14:07:11,846 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2024-11-10 14:07:11,846 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2024-11-10 14:07:11,846 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2024-11-10 14:07:11,846 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2024-11-10 14:07:11,846 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2024-11-10 14:07:11,846 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2024-11-10 14:07:11,846 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2024-11-10 14:07:11,846 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2024-11-10 14:07:11,847 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2024-11-10 14:07:11,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-10 14:07:11,847 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1] [2024-11-10 14:07:11,847 WARN L244 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 14:07:11,847 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-11-10 14:07:11,899 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 14:07:11,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 385 places, 417 transitions, 874 flow [2024-11-10 14:07:11,969 INFO L124 PetriNetUnfolderBase]: 48/475 cut-off events. [2024-11-10 14:07:11,969 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-10 14:07:11,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 501 conditions, 475 events. 48/475 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1754 event pairs, 0 based on Foata normal form. 0/400 useless extension candidates. Maximal degree in co-relation 404. Up to 12 conditions per place. [2024-11-10 14:07:11,975 INFO L82 GeneralOperation]: Start removeDead. Operand has 385 places, 417 transitions, 874 flow [2024-11-10 14:07:11,979 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 385 places, 417 transitions, 874 flow [2024-11-10 14:07:11,980 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 14:07:11,980 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;@64ebc8d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 14:07:11,981 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-11-10 14:07:11,983 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 14:07:11,984 INFO L124 PetriNetUnfolderBase]: 2/53 cut-off events. [2024-11-10 14:07:11,984 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 14:07:11,984 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:07:11,984 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] [2024-11-10 14:07:11,984 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2024-11-10 14:07:11,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:07:11,984 INFO L85 PathProgramCache]: Analyzing trace with hash 998305403, now seen corresponding path program 1 times [2024-11-10 14:07:11,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:07:11,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301237120] [2024-11-10 14:07:11,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:07:11,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:07:11,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:07:12,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:07:12,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:07:12,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301237120] [2024-11-10 14:07:12,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301237120] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:07:12,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:07:12,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 14:07:12,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372204234] [2024-11-10 14:07:12,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:07:12,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 14:07:12,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:07:12,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 14:07:12,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-10 14:07:12,343 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 341 out of 417 [2024-11-10 14:07:12,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 417 transitions, 874 flow. Second operand has 6 states, 6 states have (on average 342.5) internal successors, (2055), 6 states have internal predecessors, (2055), 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) [2024-11-10 14:07:12,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:07:12,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 341 of 417 [2024-11-10 14:07:12,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand