./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/pthread-ext/09_fmaxsym-race.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-ext/09_fmaxsym-race.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 f225ad0ddd29038af28d51fbbac3525492e9437e240dca78f58919375937976a --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 08:58:29,453 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 08:58:29,524 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2025-02-06 08:58:29,532 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 08:58:29,532 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 08:58:29,556 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 08:58:29,557 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 08:58:29,557 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 08:58:29,558 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 08:58:29,558 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 08:58:29,559 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 08:58:29,559 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 08:58:29,560 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 08:58:29,560 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 08:58:29,560 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 08:58:29,561 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 08:58:29,561 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 08:58:29,561 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 08:58:29,561 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 08:58:29,561 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 08:58:29,561 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 08:58:29,561 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 08:58:29,561 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2025-02-06 08:58:29,561 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 08:58:29,561 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 08:58:29,562 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 08:58:29,562 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 08:58:29,562 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 08:58:29,562 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 08:58:29,562 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 08:58:29,562 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 08:58:29,562 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 08:58:29,563 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 08:58:29,563 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 08:58:29,563 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 08:58:29,563 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 08:58:29,563 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 08:58:29,563 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 08:58:29,563 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 08:58:29,564 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 08:58:29,564 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 08:58:29,564 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 08:58:29,564 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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-jdk21/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 -> f225ad0ddd29038af28d51fbbac3525492e9437e240dca78f58919375937976a [2025-02-06 08:58:29,858 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 08:58:29,867 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 08:58:29,870 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 08:58:29,871 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 08:58:29,872 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 08:58:29,873 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/09_fmaxsym-race.i [2025-02-06 08:58:31,185 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e3e229fd8/01b945bb860d4e8d9352a4ed1c30d329/FLAGe0e1aecc7 [2025-02-06 08:58:31,669 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 08:58:31,669 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-ext/09_fmaxsym-race.i [2025-02-06 08:58:31,680 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e3e229fd8/01b945bb860d4e8d9352a4ed1c30d329/FLAGe0e1aecc7 [2025-02-06 08:58:31,783 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e3e229fd8/01b945bb860d4e8d9352a4ed1c30d329 [2025-02-06 08:58:31,785 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 08:58:31,786 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 08:58:31,787 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 08:58:31,787 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 08:58:31,790 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 08:58:31,791 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 08:58:31" (1/1) ... [2025-02-06 08:58:31,791 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13bee4fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:58:31, skipping insertion in model container [2025-02-06 08:58:31,791 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 08:58:31" (1/1) ... [2025-02-06 08:58:31,824 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 08:58:32,076 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 08:58:32,089 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 08:58:32,146 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 08:58:32,185 INFO L204 MainTranslator]: Completed translation [2025-02-06 08:58:32,186 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:58:32 WrapperNode [2025-02-06 08:58:32,186 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 08:58:32,188 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 08:58:32,188 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 08:58:32,188 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 08:58:32,192 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:58:32" (1/1) ... [2025-02-06 08:58:32,201 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:58:32" (1/1) ... [2025-02-06 08:58:32,220 INFO L138 Inliner]: procedures = 164, calls = 27, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 97 [2025-02-06 08:58:32,221 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 08:58:32,221 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 08:58:32,222 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 08:58:32,222 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 08:58:32,228 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:58:32" (1/1) ... [2025-02-06 08:58:32,228 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:58:32" (1/1) ... [2025-02-06 08:58:32,232 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:58:32" (1/1) ... [2025-02-06 08:58:32,232 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:58:32" (1/1) ... [2025-02-06 08:58:32,243 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:58:32" (1/1) ... [2025-02-06 08:58:32,244 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:58:32" (1/1) ... [2025-02-06 08:58:32,245 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:58:32" (1/1) ... [2025-02-06 08:58:32,246 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:58:32" (1/1) ... [2025-02-06 08:58:32,248 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 08:58:32,249 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 08:58:32,249 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 08:58:32,249 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 08:58:32,250 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:58:32" (1/1) ... [2025-02-06 08:58:32,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 08:58:32,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 08:58:32,287 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 08:58:32,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 08:58:32,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-02-06 08:58:32,314 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-02-06 08:58:32,314 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-02-06 08:58:32,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-02-06 08:58:32,314 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-02-06 08:58:32,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 08:58:32,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-02-06 08:58:32,314 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-02-06 08:58:32,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 08:58:32,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 08:58:32,316 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 08:58:32,442 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 08:58:32,444 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 08:58:32,690 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 08:58:32,691 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 08:58:32,716 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 08:58:32,717 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 08:58:32,717 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 08:58:32 BoogieIcfgContainer [2025-02-06 08:58:32,717 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 08:58:32,721 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 08:58:32,721 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 08:58:32,725 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 08:58:32,726 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 08:58:31" (1/3) ... [2025-02-06 08:58:32,727 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@122e9081 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 08:58:32, skipping insertion in model container [2025-02-06 08:58:32,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:58:32" (2/3) ... [2025-02-06 08:58:32,727 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@122e9081 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 08:58:32, skipping insertion in model container [2025-02-06 08:58:32,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 08:58:32" (3/3) ... [2025-02-06 08:58:32,728 INFO L128 eAbstractionObserver]: Analyzing ICFG 09_fmaxsym-race.i [2025-02-06 08:58:32,744 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 08:58:32,746 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 09_fmaxsym-race.i that has 2 procedures, 110 locations, 1 initial locations, 3 loop locations, and 5 error locations. [2025-02-06 08:58:32,747 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 08:58:32,830 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 08:58:32,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 116 transitions, 236 flow [2025-02-06 08:58:32,937 INFO L124 PetriNetUnfolderBase]: 6/123 cut-off events. [2025-02-06 08:58:32,942 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 08:58:32,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 123 events. 6/123 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 139 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2025-02-06 08:58:32,947 INFO L82 GeneralOperation]: Start removeDead. Operand has 113 places, 116 transitions, 236 flow [2025-02-06 08:58:32,950 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 113 places, 116 transitions, 236 flow [2025-02-06 08:58:32,957 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 08:58:32,967 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;@5eb466a2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 08:58:32,967 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2025-02-06 08:58:32,984 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 08:58:32,984 INFO L124 PetriNetUnfolderBase]: 0/50 cut-off events. [2025-02-06 08:58:32,984 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 08:58:32,984 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 08:58:32,985 INFO L206 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] [2025-02-06 08:58:32,985 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2025-02-06 08:58:32,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:58:32,990 INFO L85 PathProgramCache]: Analyzing trace with hash 174401161, now seen corresponding path program 1 times [2025-02-06 08:58:32,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:58:32,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817924328] [2025-02-06 08:58:32,997 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:58:32,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:58:33,084 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-06 08:58:33,123 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 08:58:33,123 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:58:33,128 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:58:33,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 08:58:33,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:58:33,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817924328] [2025-02-06 08:58:33,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817924328] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:58:33,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:58:33,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 08:58:33,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340788978] [2025-02-06 08:58:33,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:58:33,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 08:58:33,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:58:33,948 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 08:58:33,950 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-02-06 08:58:34,172 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 116 [2025-02-06 08:58:34,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 116 transitions, 236 flow. Second operand has 6 states, 6 states have (on average 92.5) internal successors, (555), 6 states have internal predecessors, (555), 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) [2025-02-06 08:58:34,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 08:58:34,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 116 [2025-02-06 08:58:34,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 08:58:34,248 INFO L124 PetriNetUnfolderBase]: 3/109 cut-off events. [2025-02-06 08:58:34,251 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-06 08:58:34,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 109 events. 3/109 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 84 event pairs, 0 based on Foata normal form. 11/111 useless extension candidates. Maximal degree in co-relation 69. Up to 14 conditions per place. [2025-02-06 08:58:34,254 INFO L140 encePairwiseOnDemand]: 106/116 looper letters, 13 selfloop transitions, 5 changer transitions 0/106 dead transitions. [2025-02-06 08:58:34,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 106 transitions, 252 flow [2025-02-06 08:58:34,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 08:58:34,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 08:58:34,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 569 transitions. [2025-02-06 08:58:34,274 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8175287356321839 [2025-02-06 08:58:34,277 INFO L175 Difference]: Start difference. First operand has 113 places, 116 transitions, 236 flow. Second operand 6 states and 569 transitions. [2025-02-06 08:58:34,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 106 transitions, 252 flow [2025-02-06 08:58:34,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 106 transitions, 252 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 08:58:34,288 INFO L231 Difference]: Finished difference. Result has 111 places, 106 transitions, 226 flow [2025-02-06 08:58:34,291 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=226, PETRI_PLACES=111, PETRI_TRANSITIONS=106} [2025-02-06 08:58:34,297 INFO L279 CegarLoopForPetriNet]: 113 programPoint places, -2 predicate places. [2025-02-06 08:58:34,297 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 106 transitions, 226 flow [2025-02-06 08:58:34,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 92.5) internal successors, (555), 6 states have internal predecessors, (555), 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) [2025-02-06 08:58:34,298 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 08:58:34,298 INFO L206 CegarLoopForPetriNet]: trace histogram [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] [2025-02-06 08:58:34,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 08:58:34,298 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2025-02-06 08:58:34,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:58:34,299 INFO L85 PathProgramCache]: Analyzing trace with hash -148451151, now seen corresponding path program 1 times [2025-02-06 08:58:34,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:58:34,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087056264] [2025-02-06 08:58:34,299 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:58:34,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:58:34,321 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-02-06 08:58:34,324 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-02-06 08:58:34,326 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:58:34,326 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:58:34,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 08:58:34,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:58:34,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087056264] [2025-02-06 08:58:34,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087056264] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:58:34,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:58:34,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 08:58:34,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502767096] [2025-02-06 08:58:34,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:58:34,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 08:58:34,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:58:34,358 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 08:58:34,358 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 08:58:34,380 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 116 [2025-02-06 08:58:34,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 106 transitions, 226 flow. Second operand has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 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) [2025-02-06 08:58:34,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 08:58:34,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 116 [2025-02-06 08:58:34,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 08:58:34,420 INFO L124 PetriNetUnfolderBase]: 3/121 cut-off events. [2025-02-06 08:58:34,421 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-06 08:58:34,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 121 events. 3/121 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 80 event pairs, 0 based on Foata normal form. 1/114 useless extension candidates. Maximal degree in co-relation 84. Up to 9 conditions per place. [2025-02-06 08:58:34,422 INFO L140 encePairwiseOnDemand]: 113/116 looper letters, 7 selfloop transitions, 2 changer transitions 0/107 dead transitions. [2025-02-06 08:58:34,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 107 transitions, 248 flow [2025-02-06 08:58:34,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 08:58:34,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 08:58:34,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 316 transitions. [2025-02-06 08:58:34,424 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.9080459770114943 [2025-02-06 08:58:34,424 INFO L175 Difference]: Start difference. First operand has 111 places, 106 transitions, 226 flow. Second operand 3 states and 316 transitions. [2025-02-06 08:58:34,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 107 transitions, 248 flow [2025-02-06 08:58:34,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 107 transitions, 236 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-02-06 08:58:34,428 INFO L231 Difference]: Finished difference. Result has 109 places, 107 transitions, 228 flow [2025-02-06 08:58:34,428 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=228, PETRI_PLACES=109, PETRI_TRANSITIONS=107} [2025-02-06 08:58:34,429 INFO L279 CegarLoopForPetriNet]: 113 programPoint places, -4 predicate places. [2025-02-06 08:58:34,429 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 107 transitions, 228 flow [2025-02-06 08:58:34,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 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) [2025-02-06 08:58:34,430 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 08:58:34,430 INFO L206 CegarLoopForPetriNet]: trace histogram [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] [2025-02-06 08:58:34,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 08:58:34,430 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2025-02-06 08:58:34,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:58:34,431 INFO L85 PathProgramCache]: Analyzing trace with hash 381274216, now seen corresponding path program 1 times [2025-02-06 08:58:34,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:58:34,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789183358] [2025-02-06 08:58:34,431 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:58:34,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:58:34,452 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-02-06 08:58:34,462 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-02-06 08:58:34,463 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:58:34,464 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:58:34,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 08:58:34,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:58:34,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789183358] [2025-02-06 08:58:34,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789183358] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 08:58:34,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317368191] [2025-02-06 08:58:34,595 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:58:34,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:58:34,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 08:58:34,600 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 08:58:34,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 08:58:34,667 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-02-06 08:58:34,692 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-02-06 08:58:34,693 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:58:34,693 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:58:34,695 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 08:58:34,700 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 08:58:34,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 08:58:34,786 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 08:58:34,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 08:58:34,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317368191] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 08:58:34,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 08:58:34,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2025-02-06 08:58:34,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606895941] [2025-02-06 08:58:34,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 08:58:34,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 08:58:34,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:58:34,861 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 08:58:34,861 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-02-06 08:58:34,946 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 116 [2025-02-06 08:58:34,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 107 transitions, 228 flow. Second operand has 10 states, 10 states have (on average 100.9) internal successors, (1009), 10 states have internal predecessors, (1009), 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) [2025-02-06 08:58:34,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 08:58:34,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 116 [2025-02-06 08:58:34,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 08:58:35,050 INFO L124 PetriNetUnfolderBase]: 3/136 cut-off events. [2025-02-06 08:58:35,051 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-06 08:58:35,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 136 events. 3/136 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 52 event pairs, 0 based on Foata normal form. 2/130 useless extension candidates. Maximal degree in co-relation 119. Up to 9 conditions per place. [2025-02-06 08:58:35,051 INFO L140 encePairwiseOnDemand]: 110/116 looper letters, 11 selfloop transitions, 9 changer transitions 0/115 dead transitions. [2025-02-06 08:58:35,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 115 transitions, 286 flow [2025-02-06 08:58:35,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 08:58:35,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 08:58:35,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 913 transitions. [2025-02-06 08:58:35,055 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8745210727969349 [2025-02-06 08:58:35,056 INFO L175 Difference]: Start difference. First operand has 109 places, 107 transitions, 228 flow. Second operand 9 states and 913 transitions. [2025-02-06 08:58:35,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 115 transitions, 286 flow [2025-02-06 08:58:35,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 115 transitions, 284 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 08:58:35,060 INFO L231 Difference]: Finished difference. Result has 119 places, 113 transitions, 276 flow [2025-02-06 08:58:35,062 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=276, PETRI_PLACES=119, PETRI_TRANSITIONS=113} [2025-02-06 08:58:35,062 INFO L279 CegarLoopForPetriNet]: 113 programPoint places, 6 predicate places. [2025-02-06 08:58:35,062 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 113 transitions, 276 flow [2025-02-06 08:58:35,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 100.9) internal successors, (1009), 10 states have internal predecessors, (1009), 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) [2025-02-06 08:58:35,063 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 08:58:35,063 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2025-02-06 08:58:35,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-06 08:58:35,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:58:35,269 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2025-02-06 08:58:35,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:58:35,271 INFO L85 PathProgramCache]: Analyzing trace with hash -458587384, now seen corresponding path program 2 times [2025-02-06 08:58:35,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:58:35,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684915939] [2025-02-06 08:58:35,272 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 08:58:35,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:58:35,301 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 77 statements into 2 equivalence classes. [2025-02-06 08:58:35,319 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 77 of 77 statements. [2025-02-06 08:58:35,319 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 08:58:35,319 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:58:35,544 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 08:58:35,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:58:35,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684915939] [2025-02-06 08:58:35,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684915939] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 08:58:35,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66229852] [2025-02-06 08:58:35,545 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 08:58:35,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:58:35,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 08:58:35,548 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 08:58:35,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 08:58:35,614 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 77 statements into 2 equivalence classes. [2025-02-06 08:58:35,647 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 77 of 77 statements. [2025-02-06 08:58:35,647 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 08:58:35,647 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:58:35,648 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 08:58:35,650 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 08:58:35,766 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 08:58:35,766 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 08:58:35,936 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 08:58:35,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66229852] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 08:58:35,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 08:58:35,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2025-02-06 08:58:35,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907823464] [2025-02-06 08:58:35,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 08:58:35,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-06 08:58:35,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:58:35,943 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-06 08:58:35,943 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2025-02-06 08:58:36,092 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 116 [2025-02-06 08:58:36,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 113 transitions, 276 flow. Second operand has 15 states, 15 states have (on average 101.06666666666666) internal successors, (1516), 15 states have internal predecessors, (1516), 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) [2025-02-06 08:58:36,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 08:58:36,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 116 [2025-02-06 08:58:36,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 08:58:36,291 INFO L124 PetriNetUnfolderBase]: 3/175 cut-off events. [2025-02-06 08:58:36,293 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2025-02-06 08:58:36,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262 conditions, 175 events. 3/175 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 53 event pairs, 0 based on Foata normal form. 3/170 useless extension candidates. Maximal degree in co-relation 185. Up to 9 conditions per place. [2025-02-06 08:58:36,295 INFO L140 encePairwiseOnDemand]: 110/116 looper letters, 14 selfloop transitions, 18 changer transitions 0/127 dead transitions. [2025-02-06 08:58:36,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 127 transitions, 414 flow [2025-02-06 08:58:36,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-02-06 08:58:36,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-02-06 08:58:36,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1817 transitions. [2025-02-06 08:58:36,302 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8702107279693486 [2025-02-06 08:58:36,302 INFO L175 Difference]: Start difference. First operand has 119 places, 113 transitions, 276 flow. Second operand 18 states and 1817 transitions. [2025-02-06 08:58:36,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 127 transitions, 414 flow [2025-02-06 08:58:36,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 127 transitions, 402 flow, removed 5 selfloop flow, removed 1 redundant places. [2025-02-06 08:58:36,313 INFO L231 Difference]: Finished difference. Result has 139 places, 123 transitions, 376 flow [2025-02-06 08:58:36,315 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=376, PETRI_PLACES=139, PETRI_TRANSITIONS=123} [2025-02-06 08:58:36,315 INFO L279 CegarLoopForPetriNet]: 113 programPoint places, 26 predicate places. [2025-02-06 08:58:36,316 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 123 transitions, 376 flow [2025-02-06 08:58:36,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 101.06666666666666) internal successors, (1516), 15 states have internal predecessors, (1516), 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) [2025-02-06 08:58:36,317 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 08:58:36,318 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2025-02-06 08:58:36,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-06 08:58:36,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:58:36,519 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2025-02-06 08:58:36,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:58:36,520 INFO L85 PathProgramCache]: Analyzing trace with hash 107965649, now seen corresponding path program 3 times [2025-02-06 08:58:36,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:58:36,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515178063] [2025-02-06 08:58:36,520 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 08:58:36,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:58:36,556 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 116 statements into 8 equivalence classes. [2025-02-06 08:58:36,621 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) and asserted 116 of 116 statements. [2025-02-06 08:58:36,622 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2025-02-06 08:58:36,622 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 08:58:36,622 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 08:58:36,630 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-02-06 08:58:36,652 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-02-06 08:58:36,653 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:58:36,653 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 08:58:36,679 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 08:58:36,680 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-06 08:58:36,681 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2025-02-06 08:58:36,683 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2025-02-06 08:58:36,683 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2025-02-06 08:58:36,683 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2025-02-06 08:58:36,683 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2025-02-06 08:58:36,683 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2025-02-06 08:58:36,683 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2025-02-06 08:58:36,683 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2025-02-06 08:58:36,683 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2025-02-06 08:58:36,686 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2025-02-06 08:58:36,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 08:58:36,687 INFO L422 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2025-02-06 08:58:36,690 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-06 08:58:36,690 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-02-06 08:58:36,732 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 08:58:36,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 180 transitions, 370 flow [2025-02-06 08:58:36,773 INFO L124 PetriNetUnfolderBase]: 11/196 cut-off events. [2025-02-06 08:58:36,773 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-06 08:58:36,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204 conditions, 196 events. 11/196 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 372 event pairs, 0 based on Foata normal form. 0/173 useless extension candidates. Maximal degree in co-relation 135. Up to 3 conditions per place. [2025-02-06 08:58:36,775 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 180 transitions, 370 flow [2025-02-06 08:58:36,779 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 174 places, 180 transitions, 370 flow [2025-02-06 08:58:36,780 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 08:58:36,781 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;@5eb466a2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 08:58:36,781 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2025-02-06 08:58:36,787 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 08:58:36,788 INFO L124 PetriNetUnfolderBase]: 0/50 cut-off events. [2025-02-06 08:58:36,788 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 08:58:36,788 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 08:58:36,788 INFO L206 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] [2025-02-06 08:58:36,788 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2025-02-06 08:58:36,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:58:36,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1008699203, now seen corresponding path program 1 times [2025-02-06 08:58:36,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:58:36,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028497416] [2025-02-06 08:58:36,789 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:58:36,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:58:36,798 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-06 08:58:36,804 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 08:58:36,805 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:58:36,805 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:58:37,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 08:58:37,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:58:37,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028497416] [2025-02-06 08:58:37,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028497416] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:58:37,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:58:37,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 08:58:37,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550583518] [2025-02-06 08:58:37,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:58:37,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 08:58:37,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:58:37,074 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 08:58:37,074 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-02-06 08:58:37,274 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 180 [2025-02-06 08:58:37,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 180 transitions, 370 flow. Second operand has 6 states, 6 states have (on average 145.5) internal successors, (873), 6 states have internal predecessors, (873), 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) [2025-02-06 08:58:37,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 08:58:37,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 180 [2025-02-06 08:58:37,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 08:58:37,385 INFO L124 PetriNetUnfolderBase]: 68/565 cut-off events. [2025-02-06 08:58:37,385 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2025-02-06 08:58:37,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 713 conditions, 565 events. 68/565 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2649 event pairs, 42 based on Foata normal form. 90/566 useless extension candidates. Maximal degree in co-relation 461. Up to 117 conditions per place. [2025-02-06 08:58:37,392 INFO L140 encePairwiseOnDemand]: 167/180 looper letters, 20 selfloop transitions, 5 changer transitions 0/165 dead transitions. [2025-02-06 08:58:37,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 165 transitions, 390 flow [2025-02-06 08:58:37,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 08:58:37,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 08:58:37,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 897 transitions. [2025-02-06 08:58:37,395 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8305555555555556 [2025-02-06 08:58:37,396 INFO L175 Difference]: Start difference. First operand has 174 places, 180 transitions, 370 flow. Second operand 6 states and 897 transitions. [2025-02-06 08:58:37,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 165 transitions, 390 flow [2025-02-06 08:58:37,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 165 transitions, 390 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 08:58:37,399 INFO L231 Difference]: Finished difference. Result has 170 places, 165 transitions, 350 flow [2025-02-06 08:58:37,399 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=350, PETRI_PLACES=170, PETRI_TRANSITIONS=165} [2025-02-06 08:58:37,400 INFO L279 CegarLoopForPetriNet]: 174 programPoint places, -4 predicate places. [2025-02-06 08:58:37,400 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 165 transitions, 350 flow [2025-02-06 08:58:37,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 145.5) internal successors, (873), 6 states have internal predecessors, (873), 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) [2025-02-06 08:58:37,401 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 08:58:37,401 INFO L206 CegarLoopForPetriNet]: trace histogram [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] [2025-02-06 08:58:37,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 08:58:37,401 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2025-02-06 08:58:37,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:58:37,402 INFO L85 PathProgramCache]: Analyzing trace with hash -619562928, now seen corresponding path program 1 times [2025-02-06 08:58:37,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:58:37,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4104538] [2025-02-06 08:58:37,402 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:58:37,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:58:37,409 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-02-06 08:58:37,411 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-02-06 08:58:37,411 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:58:37,411 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:58:37,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 08:58:37,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:58:37,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4104538] [2025-02-06 08:58:37,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4104538] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:58:37,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:58:37,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 08:58:37,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591682799] [2025-02-06 08:58:37,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:58:37,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 08:58:37,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:58:37,435 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 08:58:37,436 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 08:58:37,461 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 180 [2025-02-06 08:58:37,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 165 transitions, 350 flow. Second operand has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 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) [2025-02-06 08:58:37,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 08:58:37,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 180 [2025-02-06 08:58:37,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 08:58:37,530 INFO L124 PetriNetUnfolderBase]: 15/321 cut-off events. [2025-02-06 08:58:37,531 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2025-02-06 08:58:37,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 371 conditions, 321 events. 15/321 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 898 event pairs, 6 based on Foata normal form. 1/289 useless extension candidates. Maximal degree in co-relation 308. Up to 24 conditions per place. [2025-02-06 08:58:37,535 INFO L140 encePairwiseOnDemand]: 177/180 looper letters, 10 selfloop transitions, 2 changer transitions 0/166 dead transitions. [2025-02-06 08:58:37,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 166 transitions, 378 flow [2025-02-06 08:58:37,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 08:58:37,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 08:58:37,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 490 transitions. [2025-02-06 08:58:37,537 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.9074074074074074 [2025-02-06 08:58:37,537 INFO L175 Difference]: Start difference. First operand has 170 places, 165 transitions, 350 flow. Second operand 3 states and 490 transitions. [2025-02-06 08:58:37,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 166 transitions, 378 flow [2025-02-06 08:58:37,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 166 transitions, 366 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-02-06 08:58:37,542 INFO L231 Difference]: Finished difference. Result has 168 places, 166 transitions, 352 flow [2025-02-06 08:58:37,542 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=352, PETRI_PLACES=168, PETRI_TRANSITIONS=166} [2025-02-06 08:58:37,543 INFO L279 CegarLoopForPetriNet]: 174 programPoint places, -6 predicate places. [2025-02-06 08:58:37,543 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 166 transitions, 352 flow [2025-02-06 08:58:37,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 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) [2025-02-06 08:58:37,544 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 08:58:37,544 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:58:37,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 08:58:37,544 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2025-02-06 08:58:37,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:58:37,546 INFO L85 PathProgramCache]: Analyzing trace with hash 648955515, now seen corresponding path program 1 times [2025-02-06 08:58:37,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:58:37,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885493323] [2025-02-06 08:58:37,546 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:58:37,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:58:37,556 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 57 statements into 1 equivalence classes. [2025-02-06 08:58:37,563 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 57 of 57 statements. [2025-02-06 08:58:37,563 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:58:37,563 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:58:37,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 08:58:37,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:58:37,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885493323] [2025-02-06 08:58:37,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885493323] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 08:58:37,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680727351] [2025-02-06 08:58:37,624 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:58:37,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:58:37,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 08:58:37,626 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 08:58:37,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 08:58:37,686 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 57 statements into 1 equivalence classes. [2025-02-06 08:58:37,703 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 57 of 57 statements. [2025-02-06 08:58:37,704 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:58:37,704 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:58:37,705 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 08:58:37,706 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 08:58:37,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 08:58:37,749 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 08:58:37,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 08:58:37,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680727351] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 08:58:37,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 08:58:37,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2025-02-06 08:58:37,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796607864] [2025-02-06 08:58:37,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 08:58:37,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 08:58:37,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:58:37,802 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 08:58:37,802 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-02-06 08:58:37,867 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 180 [2025-02-06 08:58:37,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 166 transitions, 352 flow. Second operand has 10 states, 10 states have (on average 158.0) internal successors, (1580), 10 states have internal predecessors, (1580), 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) [2025-02-06 08:58:37,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 08:58:37,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 180 [2025-02-06 08:58:37,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 08:58:38,014 INFO L124 PetriNetUnfolderBase]: 15/336 cut-off events. [2025-02-06 08:58:38,014 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2025-02-06 08:58:38,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 394 conditions, 336 events. 15/336 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 871 event pairs, 6 based on Foata normal form. 2/305 useless extension candidates. Maximal degree in co-relation 343. Up to 24 conditions per place. [2025-02-06 08:58:38,020 INFO L140 encePairwiseOnDemand]: 174/180 looper letters, 14 selfloop transitions, 9 changer transitions 0/174 dead transitions. [2025-02-06 08:58:38,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 174 transitions, 416 flow [2025-02-06 08:58:38,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 08:58:38,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 08:58:38,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1429 transitions. [2025-02-06 08:58:38,024 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8820987654320988 [2025-02-06 08:58:38,025 INFO L175 Difference]: Start difference. First operand has 168 places, 166 transitions, 352 flow. Second operand 9 states and 1429 transitions. [2025-02-06 08:58:38,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 174 transitions, 416 flow [2025-02-06 08:58:38,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 174 transitions, 414 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 08:58:38,028 INFO L231 Difference]: Finished difference. Result has 178 places, 172 transitions, 400 flow [2025-02-06 08:58:38,029 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=400, PETRI_PLACES=178, PETRI_TRANSITIONS=172} [2025-02-06 08:58:38,029 INFO L279 CegarLoopForPetriNet]: 174 programPoint places, 4 predicate places. [2025-02-06 08:58:38,029 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 172 transitions, 400 flow [2025-02-06 08:58:38,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 158.0) internal successors, (1580), 10 states have internal predecessors, (1580), 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) [2025-02-06 08:58:38,030 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 08:58:38,031 INFO L206 CegarLoopForPetriNet]: trace histogram [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] [2025-02-06 08:58:38,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-06 08:58:38,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:58:38,231 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2025-02-06 08:58:38,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:58:38,232 INFO L85 PathProgramCache]: Analyzing trace with hash 2046702747, now seen corresponding path program 2 times [2025-02-06 08:58:38,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:58:38,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241255801] [2025-02-06 08:58:38,232 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 08:58:38,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:58:38,247 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 83 statements into 2 equivalence classes. [2025-02-06 08:58:38,257 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 83 of 83 statements. [2025-02-06 08:58:38,257 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 08:58:38,257 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:58:38,429 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 08:58:38,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:58:38,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241255801] [2025-02-06 08:58:38,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241255801] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 08:58:38,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465272782] [2025-02-06 08:58:38,430 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 08:58:38,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:58:38,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 08:58:38,433 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 08:58:38,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 08:58:38,498 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 83 statements into 2 equivalence classes. [2025-02-06 08:58:38,528 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 83 of 83 statements. [2025-02-06 08:58:38,529 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 08:58:38,529 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:58:38,532 INFO L256 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 08:58:38,535 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 08:58:38,604 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 08:58:38,604 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 08:58:38,719 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 08:58:38,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465272782] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 08:58:38,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 08:58:38,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2025-02-06 08:58:38,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038258066] [2025-02-06 08:58:38,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 08:58:38,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-06 08:58:38,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:58:38,720 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-06 08:58:38,721 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2025-02-06 08:58:38,820 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 180 [2025-02-06 08:58:38,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 172 transitions, 400 flow. Second operand has 15 states, 15 states have (on average 158.13333333333333) internal successors, (2372), 15 states have internal predecessors, (2372), 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) [2025-02-06 08:58:38,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 08:58:38,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 180 [2025-02-06 08:58:38,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 08:58:39,014 INFO L124 PetriNetUnfolderBase]: 15/375 cut-off events. [2025-02-06 08:58:39,015 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2025-02-06 08:58:39,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 487 conditions, 375 events. 15/375 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 873 event pairs, 6 based on Foata normal form. 3/345 useless extension candidates. Maximal degree in co-relation 305. Up to 24 conditions per place. [2025-02-06 08:58:39,017 INFO L140 encePairwiseOnDemand]: 174/180 looper letters, 17 selfloop transitions, 18 changer transitions 0/186 dead transitions. [2025-02-06 08:58:39,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 186 transitions, 544 flow [2025-02-06 08:58:39,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-02-06 08:58:39,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-02-06 08:58:39,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2846 transitions. [2025-02-06 08:58:39,024 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8783950617283951 [2025-02-06 08:58:39,024 INFO L175 Difference]: Start difference. First operand has 178 places, 172 transitions, 400 flow. Second operand 18 states and 2846 transitions. [2025-02-06 08:58:39,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 186 transitions, 544 flow [2025-02-06 08:58:39,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 186 transitions, 532 flow, removed 5 selfloop flow, removed 1 redundant places. [2025-02-06 08:58:39,028 INFO L231 Difference]: Finished difference. Result has 198 places, 182 transitions, 500 flow [2025-02-06 08:58:39,028 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=500, PETRI_PLACES=198, PETRI_TRANSITIONS=182} [2025-02-06 08:58:39,029 INFO L279 CegarLoopForPetriNet]: 174 programPoint places, 24 predicate places. [2025-02-06 08:58:39,029 INFO L471 AbstractCegarLoop]: Abstraction has has 198 places, 182 transitions, 500 flow [2025-02-06 08:58:39,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 158.13333333333333) internal successors, (2372), 15 states have internal predecessors, (2372), 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) [2025-02-06 08:58:39,030 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 08:58:39,030 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2025-02-06 08:58:39,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-06 08:58:39,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2025-02-06 08:58:39,231 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2025-02-06 08:58:39,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:58:39,232 INFO L85 PathProgramCache]: Analyzing trace with hash 932465136, now seen corresponding path program 3 times [2025-02-06 08:58:39,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:58:39,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513497321] [2025-02-06 08:58:39,232 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 08:58:39,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:58:39,254 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 122 statements into 7 equivalence classes. [2025-02-06 08:58:39,312 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 122 of 122 statements. [2025-02-06 08:58:39,314 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-02-06 08:58:39,315 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 08:58:39,315 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 08:58:39,321 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 122 statements into 1 equivalence classes. [2025-02-06 08:58:39,355 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 122 of 122 statements. [2025-02-06 08:58:39,356 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:58:39,356 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 08:58:39,369 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 08:58:39,370 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-06 08:58:39,370 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2025-02-06 08:58:39,370 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 14 remaining) [2025-02-06 08:58:39,370 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 14 remaining) [2025-02-06 08:58:39,370 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 14 remaining) [2025-02-06 08:58:39,371 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 14 remaining) [2025-02-06 08:58:39,371 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 14 remaining) [2025-02-06 08:58:39,371 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 14 remaining) [2025-02-06 08:58:39,371 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 14 remaining) [2025-02-06 08:58:39,371 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 14 remaining) [2025-02-06 08:58:39,371 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 14 remaining) [2025-02-06 08:58:39,371 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 14 remaining) [2025-02-06 08:58:39,371 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 14 remaining) [2025-02-06 08:58:39,371 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 14 remaining) [2025-02-06 08:58:39,371 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 14 remaining) [2025-02-06 08:58:39,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-06 08:58:39,372 INFO L422 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2025-02-06 08:58:39,372 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-06 08:58:39,372 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-02-06 08:58:39,417 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 08:58:39,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 235 places, 244 transitions, 506 flow [2025-02-06 08:58:39,452 INFO L124 PetriNetUnfolderBase]: 16/269 cut-off events. [2025-02-06 08:58:39,452 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-02-06 08:58:39,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 269 events. 16/269 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 720 event pairs, 0 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 200. Up to 4 conditions per place. [2025-02-06 08:58:39,456 INFO L82 GeneralOperation]: Start removeDead. Operand has 235 places, 244 transitions, 506 flow [2025-02-06 08:58:39,459 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 235 places, 244 transitions, 506 flow [2025-02-06 08:58:39,461 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 08:58:39,461 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;@5eb466a2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 08:58:39,461 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2025-02-06 08:58:39,466 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 08:58:39,466 INFO L124 PetriNetUnfolderBase]: 0/50 cut-off events. [2025-02-06 08:58:39,466 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 08:58:39,466 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 08:58:39,466 INFO L206 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] [2025-02-06 08:58:39,467 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2025-02-06 08:58:39,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:58:39,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1753464015, now seen corresponding path program 1 times [2025-02-06 08:58:39,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:58:39,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364156141] [2025-02-06 08:58:39,467 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:58:39,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:58:39,474 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-06 08:58:39,479 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 08:58:39,480 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:58:39,480 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:58:39,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 08:58:39,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:58:39,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364156141] [2025-02-06 08:58:39,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364156141] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:58:39,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:58:39,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 08:58:39,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594373343] [2025-02-06 08:58:39,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:58:39,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 08:58:39,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:58:39,676 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 08:58:39,676 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-02-06 08:58:39,845 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 244 [2025-02-06 08:58:39,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 244 transitions, 506 flow. Second operand has 6 states, 6 states have (on average 198.5) internal successors, (1191), 6 states have internal predecessors, (1191), 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) [2025-02-06 08:58:39,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 08:58:39,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 244 [2025-02-06 08:58:39,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 08:58:40,412 INFO L124 PetriNetUnfolderBase]: 870/4011 cut-off events. [2025-02-06 08:58:40,413 INFO L125 PetriNetUnfolderBase]: For 328/328 co-relation queries the response was YES. [2025-02-06 08:58:40,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5430 conditions, 4011 events. 870/4011 cut-off events. For 328/328 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 36487 event pairs, 630 based on Foata normal form. 755/4034 useless extension candidates. Maximal degree in co-relation 3233. Up to 1191 conditions per place. [2025-02-06 08:58:40,473 INFO L140 encePairwiseOnDemand]: 228/244 looper letters, 27 selfloop transitions, 5 changer transitions 0/224 dead transitions. [2025-02-06 08:58:40,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 224 transitions, 530 flow [2025-02-06 08:58:40,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 08:58:40,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 08:58:40,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1225 transitions. [2025-02-06 08:58:40,477 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8367486338797814 [2025-02-06 08:58:40,477 INFO L175 Difference]: Start difference. First operand has 235 places, 244 transitions, 506 flow. Second operand 6 states and 1225 transitions. [2025-02-06 08:58:40,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 224 transitions, 530 flow [2025-02-06 08:58:40,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 224 transitions, 528 flow, removed 1 selfloop flow, removed 0 redundant places. [2025-02-06 08:58:40,482 INFO L231 Difference]: Finished difference. Result has 229 places, 224 transitions, 474 flow [2025-02-06 08:58:40,483 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=474, PETRI_PLACES=229, PETRI_TRANSITIONS=224} [2025-02-06 08:58:40,484 INFO L279 CegarLoopForPetriNet]: 235 programPoint places, -6 predicate places. [2025-02-06 08:58:40,484 INFO L471 AbstractCegarLoop]: Abstraction has has 229 places, 224 transitions, 474 flow [2025-02-06 08:58:40,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 198.5) internal successors, (1191), 6 states have internal predecessors, (1191), 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) [2025-02-06 08:58:40,485 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 08:58:40,486 INFO L206 CegarLoopForPetriNet]: trace histogram [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] [2025-02-06 08:58:40,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-06 08:58:40,486 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2025-02-06 08:58:40,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:58:40,486 INFO L85 PathProgramCache]: Analyzing trace with hash 91473326, now seen corresponding path program 1 times [2025-02-06 08:58:40,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:58:40,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385723840] [2025-02-06 08:58:40,487 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:58:40,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:58:40,493 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-02-06 08:58:40,494 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-02-06 08:58:40,494 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:58:40,494 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:58:40,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 08:58:40,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:58:40,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385723840] [2025-02-06 08:58:40,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385723840] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:58:40,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:58:40,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 08:58:40,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80965569] [2025-02-06 08:58:40,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:58:40,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 08:58:40,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:58:40,522 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 08:58:40,522 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 08:58:40,546 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 244 [2025-02-06 08:58:40,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 224 transitions, 474 flow. Second operand has 3 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 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) [2025-02-06 08:58:40,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 08:58:40,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 244 [2025-02-06 08:58:40,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 08:58:40,695 INFO L124 PetriNetUnfolderBase]: 69/939 cut-off events. [2025-02-06 08:58:40,695 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2025-02-06 08:58:40,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1080 conditions, 939 events. 69/939 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 5319 event pairs, 42 based on Foata normal form. 1/831 useless extension candidates. Maximal degree in co-relation 1016. Up to 87 conditions per place. [2025-02-06 08:58:40,705 INFO L140 encePairwiseOnDemand]: 241/244 looper letters, 13 selfloop transitions, 2 changer transitions 0/225 dead transitions. [2025-02-06 08:58:40,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 225 transitions, 508 flow [2025-02-06 08:58:40,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 08:58:40,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 08:58:40,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 664 transitions. [2025-02-06 08:58:40,707 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.907103825136612 [2025-02-06 08:58:40,707 INFO L175 Difference]: Start difference. First operand has 229 places, 224 transitions, 474 flow. Second operand 3 states and 664 transitions. [2025-02-06 08:58:40,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 225 transitions, 508 flow [2025-02-06 08:58:40,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 225 transitions, 496 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-02-06 08:58:40,712 INFO L231 Difference]: Finished difference. Result has 227 places, 225 transitions, 476 flow [2025-02-06 08:58:40,712 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=476, PETRI_PLACES=227, PETRI_TRANSITIONS=225} [2025-02-06 08:58:40,714 INFO L279 CegarLoopForPetriNet]: 235 programPoint places, -8 predicate places. [2025-02-06 08:58:40,714 INFO L471 AbstractCegarLoop]: Abstraction has has 227 places, 225 transitions, 476 flow [2025-02-06 08:58:40,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 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) [2025-02-06 08:58:40,714 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 08:58:40,715 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:58:40,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-06 08:58:40,715 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2025-02-06 08:58:40,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:58:40,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1212945267, now seen corresponding path program 1 times [2025-02-06 08:58:40,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:58:40,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513672209] [2025-02-06 08:58:40,717 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:58:40,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:58:40,724 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-02-06 08:58:40,730 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-02-06 08:58:40,731 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:58:40,731 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:58:40,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 08:58:40,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:58:40,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513672209] [2025-02-06 08:58:40,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513672209] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 08:58:40,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810920415] [2025-02-06 08:58:40,778 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:58:40,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:58:40,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 08:58:40,780 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 08:58:40,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-06 08:58:40,853 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-02-06 08:58:40,873 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-02-06 08:58:40,873 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:58:40,873 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:58:40,874 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 08:58:40,876 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 08:58:40,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 08:58:40,905 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 08:58:40,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 08:58:40,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810920415] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 08:58:40,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 08:58:40,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2025-02-06 08:58:40,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624296739] [2025-02-06 08:58:40,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 08:58:40,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 08:58:40,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:58:40,945 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 08:58:40,947 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-02-06 08:58:41,001 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 244 [2025-02-06 08:58:41,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 225 transitions, 476 flow. Second operand has 10 states, 10 states have (on average 215.1) internal successors, (2151), 10 states have internal predecessors, (2151), 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) [2025-02-06 08:58:41,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 08:58:41,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 244 [2025-02-06 08:58:41,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 08:58:41,173 INFO L124 PetriNetUnfolderBase]: 69/954 cut-off events. [2025-02-06 08:58:41,173 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2025-02-06 08:58:41,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1103 conditions, 954 events. 69/954 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 5295 event pairs, 42 based on Foata normal form. 2/847 useless extension candidates. Maximal degree in co-relation 1051. Up to 87 conditions per place. [2025-02-06 08:58:41,186 INFO L140 encePairwiseOnDemand]: 238/244 looper letters, 17 selfloop transitions, 9 changer transitions 0/233 dead transitions. [2025-02-06 08:58:41,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 233 transitions, 546 flow [2025-02-06 08:58:41,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 08:58:41,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 08:58:41,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1945 transitions. [2025-02-06 08:58:41,191 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8857012750455373 [2025-02-06 08:58:41,192 INFO L175 Difference]: Start difference. First operand has 227 places, 225 transitions, 476 flow. Second operand 9 states and 1945 transitions. [2025-02-06 08:58:41,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 233 transitions, 546 flow [2025-02-06 08:58:41,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 233 transitions, 544 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 08:58:41,196 INFO L231 Difference]: Finished difference. Result has 237 places, 231 transitions, 524 flow [2025-02-06 08:58:41,197 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=524, PETRI_PLACES=237, PETRI_TRANSITIONS=231} [2025-02-06 08:58:41,197 INFO L279 CegarLoopForPetriNet]: 235 programPoint places, 2 predicate places. [2025-02-06 08:58:41,197 INFO L471 AbstractCegarLoop]: Abstraction has has 237 places, 231 transitions, 524 flow [2025-02-06 08:58:41,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 215.1) internal successors, (2151), 10 states have internal predecessors, (2151), 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) [2025-02-06 08:58:41,198 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 08:58:41,199 INFO L206 CegarLoopForPetriNet]: trace histogram [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] [2025-02-06 08:58:41,207 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-06 08:58:41,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-02-06 08:58:41,403 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2025-02-06 08:58:41,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:58:41,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1309776339, now seen corresponding path program 2 times [2025-02-06 08:58:41,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:58:41,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65410688] [2025-02-06 08:58:41,404 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 08:58:41,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:58:41,415 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 89 statements into 2 equivalence classes. [2025-02-06 08:58:41,423 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 89 of 89 statements. [2025-02-06 08:58:41,424 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 08:58:41,424 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:58:41,546 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 08:58:41,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:58:41,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65410688] [2025-02-06 08:58:41,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65410688] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 08:58:41,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074340876] [2025-02-06 08:58:41,547 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 08:58:41,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:58:41,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 08:58:41,550 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 08:58:41,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-06 08:58:41,629 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 89 statements into 2 equivalence classes. [2025-02-06 08:58:41,661 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 89 of 89 statements. [2025-02-06 08:58:41,661 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 08:58:41,661 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:58:41,663 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 08:58:41,665 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 08:58:41,733 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 08:58:41,734 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 08:58:41,836 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 08:58:41,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074340876] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 08:58:41,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 08:58:41,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2025-02-06 08:58:41,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109545200] [2025-02-06 08:58:41,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 08:58:41,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-06 08:58:41,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:58:41,837 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-06 08:58:41,837 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2025-02-06 08:58:41,948 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 244 [2025-02-06 08:58:41,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 231 transitions, 524 flow. Second operand has 15 states, 15 states have (on average 215.2) internal successors, (3228), 15 states have internal predecessors, (3228), 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) [2025-02-06 08:58:41,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 08:58:41,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 244 [2025-02-06 08:58:41,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 08:58:42,220 INFO L124 PetriNetUnfolderBase]: 69/993 cut-off events. [2025-02-06 08:58:42,220 INFO L125 PetriNetUnfolderBase]: For 87/87 co-relation queries the response was YES. [2025-02-06 08:58:42,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1196 conditions, 993 events. 69/993 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 5301 event pairs, 42 based on Foata normal form. 3/887 useless extension candidates. Maximal degree in co-relation 1013. Up to 87 conditions per place. [2025-02-06 08:58:42,231 INFO L140 encePairwiseOnDemand]: 238/244 looper letters, 20 selfloop transitions, 18 changer transitions 0/245 dead transitions. [2025-02-06 08:58:42,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 245 transitions, 674 flow [2025-02-06 08:58:42,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-02-06 08:58:42,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-02-06 08:58:42,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3875 transitions. [2025-02-06 08:58:42,243 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8822859744990893 [2025-02-06 08:58:42,243 INFO L175 Difference]: Start difference. First operand has 237 places, 231 transitions, 524 flow. Second operand 18 states and 3875 transitions. [2025-02-06 08:58:42,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 245 transitions, 674 flow [2025-02-06 08:58:42,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 245 transitions, 662 flow, removed 5 selfloop flow, removed 1 redundant places. [2025-02-06 08:58:42,249 INFO L231 Difference]: Finished difference. Result has 257 places, 241 transitions, 624 flow [2025-02-06 08:58:42,249 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=624, PETRI_PLACES=257, PETRI_TRANSITIONS=241} [2025-02-06 08:58:42,250 INFO L279 CegarLoopForPetriNet]: 235 programPoint places, 22 predicate places. [2025-02-06 08:58:42,250 INFO L471 AbstractCegarLoop]: Abstraction has has 257 places, 241 transitions, 624 flow [2025-02-06 08:58:42,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 215.2) internal successors, (3228), 15 states have internal predecessors, (3228), 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) [2025-02-06 08:58:42,252 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 08:58:42,252 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2025-02-06 08:58:42,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-06 08:58:42,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-02-06 08:58:42,453 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2025-02-06 08:58:42,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:58:42,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1050297550, now seen corresponding path program 3 times [2025-02-06 08:58:42,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:58:42,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024189806] [2025-02-06 08:58:42,454 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 08:58:42,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:58:42,474 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 128 statements into 7 equivalence classes. [2025-02-06 08:58:42,523 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 128 of 128 statements. [2025-02-06 08:58:42,523 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-02-06 08:58:42,524 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 08:58:42,524 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 08:58:42,531 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 128 statements into 1 equivalence classes. [2025-02-06 08:58:42,546 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 128 of 128 statements. [2025-02-06 08:58:42,547 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:58:42,547 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 08:58:42,569 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 08:58:42,569 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-06 08:58:42,570 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2025-02-06 08:58:42,570 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 18 remaining) [2025-02-06 08:58:42,570 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (15 of 18 remaining) [2025-02-06 08:58:42,570 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 18 remaining) [2025-02-06 08:58:42,570 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 18 remaining) [2025-02-06 08:58:42,570 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (12 of 18 remaining) [2025-02-06 08:58:42,570 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 18 remaining) [2025-02-06 08:58:42,570 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 18 remaining) [2025-02-06 08:58:42,570 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 18 remaining) [2025-02-06 08:58:42,570 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 18 remaining) [2025-02-06 08:58:42,570 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 18 remaining) [2025-02-06 08:58:42,570 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 18 remaining) [2025-02-06 08:58:42,570 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 18 remaining) [2025-02-06 08:58:42,570 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 18 remaining) [2025-02-06 08:58:42,570 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 18 remaining) [2025-02-06 08:58:42,570 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 18 remaining) [2025-02-06 08:58:42,571 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 18 remaining) [2025-02-06 08:58:42,571 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 18 remaining) [2025-02-06 08:58:42,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-02-06 08:58:42,571 INFO L422 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2025-02-06 08:58:42,572 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-06 08:58:42,572 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2025-02-06 08:58:42,617 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 08:58:42,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 296 places, 308 transitions, 644 flow [2025-02-06 08:58:42,662 INFO L124 PetriNetUnfolderBase]: 21/342 cut-off events. [2025-02-06 08:58:42,662 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-02-06 08:58:42,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 361 conditions, 342 events. 21/342 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1104 event pairs, 0 based on Foata normal form. 0/299 useless extension candidates. Maximal degree in co-relation 277. Up to 5 conditions per place. [2025-02-06 08:58:42,666 INFO L82 GeneralOperation]: Start removeDead. Operand has 296 places, 308 transitions, 644 flow [2025-02-06 08:58:42,672 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 296 places, 308 transitions, 644 flow [2025-02-06 08:58:42,673 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 08:58:42,673 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;@5eb466a2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 08:58:42,673 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2025-02-06 08:58:42,676 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 08:58:42,676 INFO L124 PetriNetUnfolderBase]: 0/50 cut-off events. [2025-02-06 08:58:42,676 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 08:58:42,677 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 08:58:42,677 INFO L206 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] [2025-02-06 08:58:42,677 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2025-02-06 08:58:42,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:58:42,677 INFO L85 PathProgramCache]: Analyzing trace with hash -2059893275, now seen corresponding path program 1 times [2025-02-06 08:58:42,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:58:42,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140769377] [2025-02-06 08:58:42,678 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:58:42,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:58:42,685 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-06 08:58:42,688 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 08:58:42,688 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:58:42,688 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:58:42,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 08:58:42,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:58:42,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140769377] [2025-02-06 08:58:42,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140769377] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:58:42,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:58:42,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 08:58:42,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503131373] [2025-02-06 08:58:42,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:58:42,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 08:58:42,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:58:42,885 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 08:58:42,886 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-02-06 08:58:43,135 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 308 [2025-02-06 08:58:43,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 308 transitions, 644 flow. Second operand has 6 states, 6 states have (on average 251.5) internal successors, (1509), 6 states have internal predecessors, (1509), 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) [2025-02-06 08:58:43,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 08:58:43,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 308 [2025-02-06 08:58:43,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 08:58:47,472 INFO L124 PetriNetUnfolderBase]: 8893/30356 cut-off events. [2025-02-06 08:58:47,472 INFO L125 PetriNetUnfolderBase]: For 3794/3794 co-relation queries the response was YES. [2025-02-06 08:58:47,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43430 conditions, 30356 events. 8893/30356 cut-off events. For 3794/3794 co-relation queries the response was YES. Maximal size of possible extension queue 996. Compared 380021 event pairs, 6804 based on Foata normal form. 6319/31189 useless extension candidates. Maximal degree in co-relation 22385. Up to 11130 conditions per place. [2025-02-06 08:58:47,774 INFO L140 encePairwiseOnDemand]: 289/308 looper letters, 34 selfloop transitions, 5 changer transitions 0/283 dead transitions. [2025-02-06 08:58:47,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 283 transitions, 672 flow [2025-02-06 08:58:47,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 08:58:47,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 08:58:47,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1553 transitions. [2025-02-06 08:58:47,777 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8403679653679653 [2025-02-06 08:58:47,777 INFO L175 Difference]: Start difference. First operand has 296 places, 308 transitions, 644 flow. Second operand 6 states and 1553 transitions. [2025-02-06 08:58:47,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 283 transitions, 672 flow [2025-02-06 08:58:47,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 283 transitions, 666 flow, removed 3 selfloop flow, removed 0 redundant places. [2025-02-06 08:58:47,784 INFO L231 Difference]: Finished difference. Result has 288 places, 283 transitions, 598 flow [2025-02-06 08:58:47,784 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=598, PETRI_PLACES=288, PETRI_TRANSITIONS=283} [2025-02-06 08:58:47,785 INFO L279 CegarLoopForPetriNet]: 296 programPoint places, -8 predicate places. [2025-02-06 08:58:47,785 INFO L471 AbstractCegarLoop]: Abstraction has has 288 places, 283 transitions, 598 flow [2025-02-06 08:58:47,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 251.5) internal successors, (1509), 6 states have internal predecessors, (1509), 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) [2025-02-06 08:58:47,786 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 08:58:47,786 INFO L206 CegarLoopForPetriNet]: trace histogram [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] [2025-02-06 08:58:47,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-02-06 08:58:47,787 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2025-02-06 08:58:47,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:58:47,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1492154955, now seen corresponding path program 1 times [2025-02-06 08:58:47,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:58:47,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839395919] [2025-02-06 08:58:47,787 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:58:47,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:58:47,794 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-02-06 08:58:47,796 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-02-06 08:58:47,796 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:58:47,796 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:58:47,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 08:58:47,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:58:47,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839395919] [2025-02-06 08:58:47,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839395919] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:58:47,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:58:47,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 08:58:47,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898059297] [2025-02-06 08:58:47,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:58:47,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 08:58:47,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:58:47,815 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 08:58:47,815 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 08:58:47,837 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 308 [2025-02-06 08:58:47,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 283 transitions, 598 flow. Second operand has 3 states, 3 states have (on average 275.6666666666667) internal successors, (827), 3 states have internal predecessors, (827), 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) [2025-02-06 08:58:47,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 08:58:47,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 308 [2025-02-06 08:58:47,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 08:58:48,163 INFO L124 PetriNetUnfolderBase]: 285/2847 cut-off events. [2025-02-06 08:58:48,163 INFO L125 PetriNetUnfolderBase]: For 282/282 co-relation queries the response was YES. [2025-02-06 08:58:48,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3313 conditions, 2847 events. 285/2847 cut-off events. For 282/282 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 23884 event pairs, 204 based on Foata normal form. 1/2510 useless extension candidates. Maximal degree in co-relation 3248. Up to 330 conditions per place. [2025-02-06 08:58:48,304 INFO L140 encePairwiseOnDemand]: 305/308 looper letters, 16 selfloop transitions, 2 changer transitions 0/284 dead transitions. [2025-02-06 08:58:48,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 284 transitions, 638 flow [2025-02-06 08:58:48,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 08:58:48,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 08:58:48,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 838 transitions. [2025-02-06 08:58:48,306 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.9069264069264069 [2025-02-06 08:58:48,306 INFO L175 Difference]: Start difference. First operand has 288 places, 283 transitions, 598 flow. Second operand 3 states and 838 transitions. [2025-02-06 08:58:48,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 284 transitions, 638 flow [2025-02-06 08:58:48,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 284 transitions, 626 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-02-06 08:58:48,312 INFO L231 Difference]: Finished difference. Result has 286 places, 284 transitions, 600 flow [2025-02-06 08:58:48,312 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=600, PETRI_PLACES=286, PETRI_TRANSITIONS=284} [2025-02-06 08:58:48,313 INFO L279 CegarLoopForPetriNet]: 296 programPoint places, -10 predicate places. [2025-02-06 08:58:48,313 INFO L471 AbstractCegarLoop]: Abstraction has has 286 places, 284 transitions, 600 flow [2025-02-06 08:58:48,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 275.6666666666667) internal successors, (827), 3 states have internal predecessors, (827), 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) [2025-02-06 08:58:48,313 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 08:58:48,313 INFO L206 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:58:48,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-02-06 08:58:48,314 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2025-02-06 08:58:48,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:58:48,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1207964642, now seen corresponding path program 1 times [2025-02-06 08:58:48,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:58:48,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246031863] [2025-02-06 08:58:48,314 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:58:48,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:58:48,323 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-02-06 08:58:48,326 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-02-06 08:58:48,326 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:58:48,326 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:58:48,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 08:58:48,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:58:48,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246031863] [2025-02-06 08:58:48,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246031863] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 08:58:48,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619646302] [2025-02-06 08:58:48,368 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:58:48,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:58:48,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 08:58:48,371 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 08:58:48,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-06 08:58:48,457 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-02-06 08:58:48,474 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-02-06 08:58:48,475 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:58:48,475 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:58:48,476 INFO L256 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 08:58:48,477 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 08:58:48,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 08:58:48,508 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 08:58:48,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 08:58:48,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619646302] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 08:58:48,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 08:58:48,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2025-02-06 08:58:48,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146478841] [2025-02-06 08:58:48,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 08:58:48,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 08:58:48,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:58:48,543 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 08:58:48,544 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-02-06 08:58:48,604 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 308 [2025-02-06 08:58:48,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 284 transitions, 600 flow. Second operand has 10 states, 10 states have (on average 272.2) internal successors, (2722), 10 states have internal predecessors, (2722), 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) [2025-02-06 08:58:48,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 08:58:48,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 308 [2025-02-06 08:58:48,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 08:58:48,998 INFO L124 PetriNetUnfolderBase]: 285/2862 cut-off events. [2025-02-06 08:58:48,998 INFO L125 PetriNetUnfolderBase]: For 281/281 co-relation queries the response was YES. [2025-02-06 08:58:49,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3336 conditions, 2862 events. 285/2862 cut-off events. For 281/281 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 23829 event pairs, 204 based on Foata normal form. 2/2526 useless extension candidates. Maximal degree in co-relation 3283. Up to 330 conditions per place. [2025-02-06 08:58:49,032 INFO L140 encePairwiseOnDemand]: 302/308 looper letters, 20 selfloop transitions, 9 changer transitions 0/292 dead transitions. [2025-02-06 08:58:49,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 292 transitions, 676 flow [2025-02-06 08:58:49,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 08:58:49,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 08:58:49,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2461 transitions. [2025-02-06 08:58:49,035 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8878066378066378 [2025-02-06 08:58:49,035 INFO L175 Difference]: Start difference. First operand has 286 places, 284 transitions, 600 flow. Second operand 9 states and 2461 transitions. [2025-02-06 08:58:49,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 292 transitions, 676 flow [2025-02-06 08:58:49,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 292 transitions, 674 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 08:58:49,040 INFO L231 Difference]: Finished difference. Result has 296 places, 290 transitions, 648 flow [2025-02-06 08:58:49,040 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=648, PETRI_PLACES=296, PETRI_TRANSITIONS=290} [2025-02-06 08:58:49,041 INFO L279 CegarLoopForPetriNet]: 296 programPoint places, 0 predicate places. [2025-02-06 08:58:49,041 INFO L471 AbstractCegarLoop]: Abstraction has has 296 places, 290 transitions, 648 flow [2025-02-06 08:58:49,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 272.2) internal successors, (2722), 10 states have internal predecessors, (2722), 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) [2025-02-06 08:58:49,042 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 08:58:49,042 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:58:49,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-02-06 08:58:49,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:58:49,246 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2025-02-06 08:58:49,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:58:49,247 INFO L85 PathProgramCache]: Analyzing trace with hash 966936894, now seen corresponding path program 2 times [2025-02-06 08:58:49,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:58:49,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415504706] [2025-02-06 08:58:49,247 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 08:58:49,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:58:49,258 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 95 statements into 2 equivalence classes. [2025-02-06 08:58:49,265 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 95 of 95 statements. [2025-02-06 08:58:49,265 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 08:58:49,265 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:58:49,372 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 08:58:49,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:58:49,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415504706] [2025-02-06 08:58:49,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415504706] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 08:58:49,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628274013] [2025-02-06 08:58:49,372 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 08:58:49,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:58:49,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 08:58:49,375 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 08:58:49,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-06 08:58:49,473 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 95 statements into 2 equivalence classes. [2025-02-06 08:58:49,503 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 95 of 95 statements. [2025-02-06 08:58:49,503 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 08:58:49,503 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:58:49,504 INFO L256 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 08:58:49,506 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 08:58:49,574 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 08:58:49,575 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 08:58:49,679 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 08:58:49,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628274013] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 08:58:49,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 08:58:49,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2025-02-06 08:58:49,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320740488] [2025-02-06 08:58:49,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 08:58:49,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-06 08:58:49,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:58:49,682 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-06 08:58:49,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2025-02-06 08:58:49,801 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 308 [2025-02-06 08:58:49,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 290 transitions, 648 flow. Second operand has 15 states, 15 states have (on average 272.26666666666665) internal successors, (4084), 15 states have internal predecessors, (4084), 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) [2025-02-06 08:58:49,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 08:58:49,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 308 [2025-02-06 08:58:49,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 08:58:50,469 INFO L124 PetriNetUnfolderBase]: 285/2901 cut-off events. [2025-02-06 08:58:50,469 INFO L125 PetriNetUnfolderBase]: For 303/303 co-relation queries the response was YES. [2025-02-06 08:58:50,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3429 conditions, 2901 events. 285/2901 cut-off events. For 303/303 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 23926 event pairs, 204 based on Foata normal form. 3/2566 useless extension candidates. Maximal degree in co-relation 3245. Up to 330 conditions per place. [2025-02-06 08:58:50,516 INFO L140 encePairwiseOnDemand]: 302/308 looper letters, 23 selfloop transitions, 18 changer transitions 0/304 dead transitions. [2025-02-06 08:58:50,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 304 transitions, 804 flow [2025-02-06 08:58:50,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-02-06 08:58:50,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-02-06 08:58:50,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4904 transitions. [2025-02-06 08:58:50,524 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8845598845598845 [2025-02-06 08:58:50,525 INFO L175 Difference]: Start difference. First operand has 296 places, 290 transitions, 648 flow. Second operand 18 states and 4904 transitions. [2025-02-06 08:58:50,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 304 transitions, 804 flow [2025-02-06 08:58:50,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 304 transitions, 792 flow, removed 5 selfloop flow, removed 1 redundant places. [2025-02-06 08:58:50,531 INFO L231 Difference]: Finished difference. Result has 316 places, 300 transitions, 748 flow [2025-02-06 08:58:50,532 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=748, PETRI_PLACES=316, PETRI_TRANSITIONS=300} [2025-02-06 08:58:50,532 INFO L279 CegarLoopForPetriNet]: 296 programPoint places, 20 predicate places. [2025-02-06 08:58:50,532 INFO L471 AbstractCegarLoop]: Abstraction has has 316 places, 300 transitions, 748 flow [2025-02-06 08:58:50,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 272.26666666666665) internal successors, (4084), 15 states have internal predecessors, (4084), 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) [2025-02-06 08:58:50,534 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 08:58:50,534 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2025-02-06 08:58:50,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-06 08:58:50,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:58:50,739 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2025-02-06 08:58:50,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:58:50,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1391436053, now seen corresponding path program 3 times [2025-02-06 08:58:50,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:58:50,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646284418] [2025-02-06 08:58:50,740 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 08:58:50,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:58:50,761 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 134 statements into 8 equivalence classes. [2025-02-06 08:58:50,801 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) and asserted 134 of 134 statements. [2025-02-06 08:58:50,802 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2025-02-06 08:58:50,802 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 08:58:50,802 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 08:58:50,808 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 134 statements into 1 equivalence classes. [2025-02-06 08:58:50,825 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 134 of 134 statements. [2025-02-06 08:58:50,825 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:58:50,825 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 08:58:50,843 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 08:58:50,843 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-06 08:58:50,844 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2025-02-06 08:58:50,844 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2025-02-06 08:58:50,844 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2025-02-06 08:58:50,844 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2025-02-06 08:58:50,844 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2025-02-06 08:58:50,844 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2025-02-06 08:58:50,844 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2025-02-06 08:58:50,844 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2025-02-06 08:58:50,844 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2025-02-06 08:58:50,844 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2025-02-06 08:58:50,844 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2025-02-06 08:58:50,844 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2025-02-06 08:58:50,844 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2025-02-06 08:58:50,844 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2025-02-06 08:58:50,844 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2025-02-06 08:58:50,845 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2025-02-06 08:58:50,845 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2025-02-06 08:58:50,845 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2025-02-06 08:58:50,845 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2025-02-06 08:58:50,845 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2025-02-06 08:58:50,845 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2025-02-06 08:58:50,845 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2025-02-06 08:58:50,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-02-06 08:58:50,845 INFO L422 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2025-02-06 08:58:50,846 WARN L246 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-06 08:58:50,846 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2025-02-06 08:58:50,906 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 08:58:50,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 357 places, 372 transitions, 784 flow [2025-02-06 08:58:50,987 INFO L124 PetriNetUnfolderBase]: 26/415 cut-off events. [2025-02-06 08:58:50,987 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2025-02-06 08:58:50,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 441 conditions, 415 events. 26/415 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1492 event pairs, 0 based on Foata normal form. 0/362 useless extension candidates. Maximal degree in co-relation 355. Up to 6 conditions per place. [2025-02-06 08:58:50,994 INFO L82 GeneralOperation]: Start removeDead. Operand has 357 places, 372 transitions, 784 flow [2025-02-06 08:58:50,998 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 357 places, 372 transitions, 784 flow [2025-02-06 08:58:50,999 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 08:58:51,000 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;@5eb466a2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 08:58:51,000 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2025-02-06 08:58:51,004 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 08:58:51,004 INFO L124 PetriNetUnfolderBase]: 0/50 cut-off events. [2025-02-06 08:58:51,004 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 08:58:51,004 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 08:58:51,004 INFO L206 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] [2025-02-06 08:58:51,004 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2025-02-06 08:58:51,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:58:51,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1927986983, now seen corresponding path program 1 times [2025-02-06 08:58:51,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:58:51,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853400338] [2025-02-06 08:58:51,005 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:58:51,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:58:51,013 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-06 08:58:51,017 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 08:58:51,017 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:58:51,017 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:58:51,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 08:58:51,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:58:51,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853400338] [2025-02-06 08:58:51,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853400338] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:58:51,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:58:51,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 08:58:51,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164321608] [2025-02-06 08:58:51,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:58:51,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 08:58:51,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:58:51,200 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 08:58:51,200 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-02-06 08:58:51,428 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 372 [2025-02-06 08:58:51,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 372 transitions, 784 flow. Second operand has 6 states, 6 states have (on average 304.5) internal successors, (1827), 6 states have internal predecessors, (1827), 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) [2025-02-06 08:58:51,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 08:58:51,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 372 [2025-02-06 08:58:51,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 08:59:22,723 INFO L124 PetriNetUnfolderBase]: 81869/231410 cut-off events. [2025-02-06 08:59:22,724 INFO L125 PetriNetUnfolderBase]: For 40121/40121 co-relation queries the response was YES. [2025-02-06 08:59:24,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 345291 conditions, 231410 events. 81869/231410 cut-off events. For 40121/40121 co-relation queries the response was YES. Maximal size of possible extension queue 6614. Compared 3527804 event pairs, 64428 based on Foata normal form. 52388/244848 useless extension candidates. Maximal degree in co-relation 43774. Up to 97530 conditions per place.