/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/pthread-ext/35_double_lock_p3_vs.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 18:34:07,333 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 18:34:07,415 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-24 18:34:07,421 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 18:34:07,421 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 18:34:07,451 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 18:34:07,451 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 18:34:07,452 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 18:34:07,452 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 18:34:07,457 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 18:34:07,457 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 18:34:07,457 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 18:34:07,457 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 18:34:07,458 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 18:34:07,458 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 18:34:07,458 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 18:34:07,458 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 18:34:07,458 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 18:34:07,458 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 18:34:07,458 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 18:34:07,459 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 18:34:07,459 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 18:34:07,459 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 18:34:07,459 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 18:34:07,460 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 18:34:07,460 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 18:34:07,460 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 18:34:07,460 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 18:34:07,461 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 18:34:07,461 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 18:34:07,462 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 18:34:07,462 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 18:34:07,462 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 18:34:07,462 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 18:34:07,462 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 18:34:07,463 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-24 18:34:07,754 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 18:34:07,774 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 18:34:07,777 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 18:34:07,778 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 18:34:07,778 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 18:34:07,779 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/35_double_lock_p3_vs.i [2023-08-24 18:34:08,967 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 18:34:09,239 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 18:34:09,240 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/35_double_lock_p3_vs.i [2023-08-24 18:34:09,257 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c96cd647/1150b91736a047e8b46fd30fa7f7e158/FLAG3a0682bce [2023-08-24 18:34:09,267 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c96cd647/1150b91736a047e8b46fd30fa7f7e158 [2023-08-24 18:34:09,269 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 18:34:09,270 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 18:34:09,271 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 18:34:09,271 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 18:34:09,274 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 18:34:09,274 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 06:34:09" (1/1) ... [2023-08-24 18:34:09,275 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d99563f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:34:09, skipping insertion in model container [2023-08-24 18:34:09,275 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 06:34:09" (1/1) ... [2023-08-24 18:34:09,314 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 18:34:09,541 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 18:34:09,548 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 18:34:09,565 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [254] [2023-08-24 18:34:09,566 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [254] [2023-08-24 18:34:09,583 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 18:34:09,612 INFO L206 MainTranslator]: Completed translation [2023-08-24 18:34:09,613 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:34:09 WrapperNode [2023-08-24 18:34:09,613 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 18:34:09,614 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 18:34:09,614 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 18:34:09,614 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 18:34:09,620 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:34:09" (1/1) ... [2023-08-24 18:34:09,632 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:34:09" (1/1) ... [2023-08-24 18:34:09,660 INFO L138 Inliner]: procedures = 172, calls = 28, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 227 [2023-08-24 18:34:09,661 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 18:34:09,662 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 18:34:09,662 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 18:34:09,662 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 18:34:09,672 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:34:09" (1/1) ... [2023-08-24 18:34:09,672 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:34:09" (1/1) ... [2023-08-24 18:34:09,681 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:34:09" (1/1) ... [2023-08-24 18:34:09,681 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:34:09" (1/1) ... [2023-08-24 18:34:09,710 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:34:09" (1/1) ... [2023-08-24 18:34:09,713 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:34:09" (1/1) ... [2023-08-24 18:34:09,715 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:34:09" (1/1) ... [2023-08-24 18:34:09,717 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:34:09" (1/1) ... [2023-08-24 18:34:09,720 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 18:34:09,720 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 18:34:09,721 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 18:34:09,721 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 18:34:09,721 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:34:09" (1/1) ... [2023-08-24 18:34:09,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 18:34:09,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 18:34:09,766 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-24 18:34:09,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-24 18:34:09,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 18:34:09,810 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2023-08-24 18:34:09,811 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2023-08-24 18:34:09,811 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-24 18:34:09,811 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-24 18:34:09,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 18:34:09,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 18:34:09,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 18:34:09,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 18:34:09,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 18:34:09,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 18:34:09,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 18:34:09,814 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 18:34:09,976 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 18:34:09,978 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 18:34:10,333 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 18:34:10,614 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 18:34:10,616 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-24 18:34:10,618 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 06:34:10 BoogieIcfgContainer [2023-08-24 18:34:10,618 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 18:34:10,621 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 18:34:10,621 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 18:34:10,623 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 18:34:10,624 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 06:34:09" (1/3) ... [2023-08-24 18:34:10,624 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71302874 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 06:34:10, skipping insertion in model container [2023-08-24 18:34:10,625 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:34:09" (2/3) ... [2023-08-24 18:34:10,625 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71302874 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 06:34:10, skipping insertion in model container [2023-08-24 18:34:10,625 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 06:34:10" (3/3) ... [2023-08-24 18:34:10,626 INFO L112 eAbstractionObserver]: Analyzing ICFG 35_double_lock_p3_vs.i [2023-08-24 18:34:10,642 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 18:34:10,642 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2023-08-24 18:34:10,642 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 18:34:10,712 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 18:34:10,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 127 transitions, 264 flow [2023-08-24 18:34:10,792 INFO L124 PetriNetUnfolderBase]: 7/136 cut-off events. [2023-08-24 18:34:10,793 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 18:34:10,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 136 events. 7/136 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 202 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 120. Up to 4 conditions per place. [2023-08-24 18:34:10,798 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 127 transitions, 264 flow [2023-08-24 18:34:10,804 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 126 places, 126 transitions, 260 flow [2023-08-24 18:34:10,808 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 18:34:10,826 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 126 places, 126 transitions, 260 flow [2023-08-24 18:34:10,832 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 126 places, 126 transitions, 260 flow [2023-08-24 18:34:10,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 126 transitions, 260 flow [2023-08-24 18:34:10,861 INFO L124 PetriNetUnfolderBase]: 7/136 cut-off events. [2023-08-24 18:34:10,862 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 18:34:10,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 136 events. 7/136 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 202 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 120. Up to 4 conditions per place. [2023-08-24 18:34:10,867 INFO L119 LiptonReduction]: Number of co-enabled transitions 5726 [2023-08-24 18:34:13,537 INFO L134 LiptonReduction]: Checked pairs total: 19721 [2023-08-24 18:34:13,538 INFO L136 LiptonReduction]: Total number of compositions: 87 [2023-08-24 18:34:13,549 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 18:34:13,555 INFO L357 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, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@1480b024, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 18:34:13,555 INFO L358 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2023-08-24 18:34:13,557 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 18:34:13,557 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2023-08-24 18:34:13,557 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 18:34:13,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:34:13,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-24 18:34:13,558 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2023-08-24 18:34:13,562 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:34:13,563 INFO L85 PathProgramCache]: Analyzing trace with hash 25341380, now seen corresponding path program 1 times [2023-08-24 18:34:13,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:34:13,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040083834] [2023-08-24 18:34:13,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:34:13,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:34:13,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:34:13,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:34:13,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:34:13,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040083834] [2023-08-24 18:34:13,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040083834] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:34:13,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:34:13,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 18:34:13,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163035411] [2023-08-24 18:34:13,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:34:13,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-24 18:34:13,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:34:13,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-24 18:34:13,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-24 18:34:13,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 214 [2023-08-24 18:34:13,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 63 transitions, 134 flow. Second operand has 2 states, 2 states have (on average 101.5) internal successors, (203), 2 states have internal predecessors, (203), 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) [2023-08-24 18:34:13,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:34:13,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 214 [2023-08-24 18:34:13,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:34:13,954 INFO L124 PetriNetUnfolderBase]: 372/789 cut-off events. [2023-08-24 18:34:13,955 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 18:34:13,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1407 conditions, 789 events. 372/789 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 4181 event pairs, 303 based on Foata normal form. 57/803 useless extension candidates. Maximal degree in co-relation 1397. Up to 601 conditions per place. [2023-08-24 18:34:13,961 INFO L140 encePairwiseOnDemand]: 199/214 looper letters, 27 selfloop transitions, 0 changer transitions 0/48 dead transitions. [2023-08-24 18:34:13,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 48 transitions, 158 flow [2023-08-24 18:34:13,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-24 18:34:13,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-24 18:34:13,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 242 transitions. [2023-08-24 18:34:13,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5654205607476636 [2023-08-24 18:34:13,973 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 242 transitions. [2023-08-24 18:34:13,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 242 transitions. [2023-08-24 18:34:13,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:34:13,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 242 transitions. [2023-08-24 18:34:13,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 121.0) internal successors, (242), 2 states have internal predecessors, (242), 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) [2023-08-24 18:34:13,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 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) [2023-08-24 18:34:13,983 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 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) [2023-08-24 18:34:13,984 INFO L175 Difference]: Start difference. First operand has 66 places, 63 transitions, 134 flow. Second operand 2 states and 242 transitions. [2023-08-24 18:34:13,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 48 transitions, 158 flow [2023-08-24 18:34:13,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 48 transitions, 157 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 18:34:13,988 INFO L231 Difference]: Finished difference. Result has 52 places, 48 transitions, 103 flow [2023-08-24 18:34:13,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=103, PETRI_PLACES=52, PETRI_TRANSITIONS=48} [2023-08-24 18:34:13,993 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -14 predicate places. [2023-08-24 18:34:13,993 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 48 transitions, 103 flow [2023-08-24 18:34:13,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 101.5) internal successors, (203), 2 states have internal predecessors, (203), 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) [2023-08-24 18:34:13,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:34:13,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-24 18:34:13,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 18:34:13,994 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2023-08-24 18:34:13,994 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:34:13,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1416714521, now seen corresponding path program 1 times [2023-08-24 18:34:13,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:34:13,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383616789] [2023-08-24 18:34:13,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:34:13,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:34:14,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:34:14,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:34:14,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:34:14,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383616789] [2023-08-24 18:34:14,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383616789] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:34:14,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:34:14,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 18:34:14,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444406486] [2023-08-24 18:34:14,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:34:14,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 18:34:14,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:34:14,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 18:34:14,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 18:34:14,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 214 [2023-08-24 18:34:14,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 48 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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) [2023-08-24 18:34:14,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:34:14,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 214 [2023-08-24 18:34:14,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:34:14,393 INFO L124 PetriNetUnfolderBase]: 1323/2227 cut-off events. [2023-08-24 18:34:14,393 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-08-24 18:34:14,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4398 conditions, 2227 events. 1323/2227 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 10480 event pairs, 399 based on Foata normal form. 0/2016 useless extension candidates. Maximal degree in co-relation 4394. Up to 1365 conditions per place. [2023-08-24 18:34:14,404 INFO L140 encePairwiseOnDemand]: 199/214 looper letters, 56 selfloop transitions, 10 changer transitions 0/70 dead transitions. [2023-08-24 18:34:14,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 70 transitions, 282 flow [2023-08-24 18:34:14,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 18:34:14,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 18:34:14,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 290 transitions. [2023-08-24 18:34:14,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4517133956386293 [2023-08-24 18:34:14,407 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 290 transitions. [2023-08-24 18:34:14,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 290 transitions. [2023-08-24 18:34:14,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:34:14,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 290 transitions. [2023-08-24 18:34:14,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 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) [2023-08-24 18:34:14,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 214.0) internal successors, (856), 4 states have internal predecessors, (856), 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) [2023-08-24 18:34:14,411 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 214.0) internal successors, (856), 4 states have internal predecessors, (856), 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) [2023-08-24 18:34:14,411 INFO L175 Difference]: Start difference. First operand has 52 places, 48 transitions, 103 flow. Second operand 3 states and 290 transitions. [2023-08-24 18:34:14,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 70 transitions, 282 flow [2023-08-24 18:34:14,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 70 transitions, 282 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 18:34:14,413 INFO L231 Difference]: Finished difference. Result has 52 places, 50 transitions, 161 flow [2023-08-24 18:34:14,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=161, PETRI_PLACES=52, PETRI_TRANSITIONS=50} [2023-08-24 18:34:14,414 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -14 predicate places. [2023-08-24 18:34:14,414 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 50 transitions, 161 flow [2023-08-24 18:34:14,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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) [2023-08-24 18:34:14,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:34:14,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:34:14,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 18:34:14,415 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONASSERT === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2023-08-24 18:34:14,416 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:34:14,416 INFO L85 PathProgramCache]: Analyzing trace with hash -968476384, now seen corresponding path program 1 times [2023-08-24 18:34:14,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:34:14,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431419072] [2023-08-24 18:34:14,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:34:14,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:34:14,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:34:14,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:34:14,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:34:14,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431419072] [2023-08-24 18:34:14,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431419072] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:34:14,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:34:14,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 18:34:14,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201092271] [2023-08-24 18:34:14,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:34:14,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 18:34:14,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:34:14,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 18:34:14,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 18:34:14,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 214 [2023-08-24 18:34:14,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 50 transitions, 161 flow. Second operand has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 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) [2023-08-24 18:34:14,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:34:14,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 214 [2023-08-24 18:34:14,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:34:14,706 INFO L124 PetriNetUnfolderBase]: 890/1720 cut-off events. [2023-08-24 18:34:14,706 INFO L125 PetriNetUnfolderBase]: For 216/222 co-relation queries the response was YES. [2023-08-24 18:34:14,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3656 conditions, 1720 events. 890/1720 cut-off events. For 216/222 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 8854 event pairs, 301 based on Foata normal form. 0/1573 useless extension candidates. Maximal degree in co-relation 3650. Up to 1217 conditions per place. [2023-08-24 18:34:14,718 INFO L140 encePairwiseOnDemand]: 211/214 looper letters, 33 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2023-08-24 18:34:14,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 55 transitions, 241 flow [2023-08-24 18:34:14,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 18:34:14,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 18:34:14,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 302 transitions. [2023-08-24 18:34:14,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.470404984423676 [2023-08-24 18:34:14,720 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 302 transitions. [2023-08-24 18:34:14,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 302 transitions. [2023-08-24 18:34:14,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:34:14,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 302 transitions. [2023-08-24 18:34:14,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 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) [2023-08-24 18:34:14,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 214.0) internal successors, (856), 4 states have internal predecessors, (856), 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) [2023-08-24 18:34:14,724 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 214.0) internal successors, (856), 4 states have internal predecessors, (856), 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) [2023-08-24 18:34:14,724 INFO L175 Difference]: Start difference. First operand has 52 places, 50 transitions, 161 flow. Second operand 3 states and 302 transitions. [2023-08-24 18:34:14,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 55 transitions, 241 flow [2023-08-24 18:34:14,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 55 transitions, 221 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 18:34:14,728 INFO L231 Difference]: Finished difference. Result has 53 places, 50 transitions, 149 flow [2023-08-24 18:34:14,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=149, PETRI_PLACES=53, PETRI_TRANSITIONS=50} [2023-08-24 18:34:14,729 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -13 predicate places. [2023-08-24 18:34:14,729 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 50 transitions, 149 flow [2023-08-24 18:34:14,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 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) [2023-08-24 18:34:14,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:34:14,729 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-24 18:34:14,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 18:34:14,730 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2023-08-24 18:34:14,730 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:34:14,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1915461161, now seen corresponding path program 1 times [2023-08-24 18:34:14,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:34:14,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310783163] [2023-08-24 18:34:14,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:34:14,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:34:14,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 18:34:14,744 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 18:34:14,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 18:34:14,766 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 18:34:14,766 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 18:34:14,767 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (45 of 46 remaining) [2023-08-24 18:34:14,769 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (44 of 46 remaining) [2023-08-24 18:34:14,769 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (43 of 46 remaining) [2023-08-24 18:34:14,769 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (42 of 46 remaining) [2023-08-24 18:34:14,769 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (41 of 46 remaining) [2023-08-24 18:34:14,770 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (40 of 46 remaining) [2023-08-24 18:34:14,770 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (39 of 46 remaining) [2023-08-24 18:34:14,770 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (38 of 46 remaining) [2023-08-24 18:34:14,770 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (37 of 46 remaining) [2023-08-24 18:34:14,770 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8ASSERT_VIOLATIONDATA_RACE (36 of 46 remaining) [2023-08-24 18:34:14,770 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9ASSERT_VIOLATIONDATA_RACE (35 of 46 remaining) [2023-08-24 18:34:14,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10ASSERT_VIOLATIONDATA_RACE (34 of 46 remaining) [2023-08-24 18:34:14,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11ASSERT_VIOLATIONDATA_RACE (33 of 46 remaining) [2023-08-24 18:34:14,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err12ASSERT_VIOLATIONDATA_RACE (32 of 46 remaining) [2023-08-24 18:34:14,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err13ASSERT_VIOLATIONDATA_RACE (31 of 46 remaining) [2023-08-24 18:34:14,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err14ASSERT_VIOLATIONDATA_RACE (30 of 46 remaining) [2023-08-24 18:34:14,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err15ASSERT_VIOLATIONDATA_RACE (29 of 46 remaining) [2023-08-24 18:34:14,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (28 of 46 remaining) [2023-08-24 18:34:14,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (27 of 46 remaining) [2023-08-24 18:34:14,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (26 of 46 remaining) [2023-08-24 18:34:14,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 46 remaining) [2023-08-24 18:34:14,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (24 of 46 remaining) [2023-08-24 18:34:14,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONASSERT (23 of 46 remaining) [2023-08-24 18:34:14,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 46 remaining) [2023-08-24 18:34:14,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (21 of 46 remaining) [2023-08-24 18:34:14,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (20 of 46 remaining) [2023-08-24 18:34:14,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (19 of 46 remaining) [2023-08-24 18:34:14,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (18 of 46 remaining) [2023-08-24 18:34:14,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (17 of 46 remaining) [2023-08-24 18:34:14,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (16 of 46 remaining) [2023-08-24 18:34:14,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (15 of 46 remaining) [2023-08-24 18:34:14,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (14 of 46 remaining) [2023-08-24 18:34:14,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8ASSERT_VIOLATIONDATA_RACE (13 of 46 remaining) [2023-08-24 18:34:14,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9ASSERT_VIOLATIONDATA_RACE (12 of 46 remaining) [2023-08-24 18:34:14,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10ASSERT_VIOLATIONDATA_RACE (11 of 46 remaining) [2023-08-24 18:34:14,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11ASSERT_VIOLATIONDATA_RACE (10 of 46 remaining) [2023-08-24 18:34:14,775 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err12ASSERT_VIOLATIONDATA_RACE (9 of 46 remaining) [2023-08-24 18:34:14,775 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err13ASSERT_VIOLATIONDATA_RACE (8 of 46 remaining) [2023-08-24 18:34:14,775 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err14ASSERT_VIOLATIONDATA_RACE (7 of 46 remaining) [2023-08-24 18:34:14,775 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err15ASSERT_VIOLATIONDATA_RACE (6 of 46 remaining) [2023-08-24 18:34:14,775 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 46 remaining) [2023-08-24 18:34:14,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 46 remaining) [2023-08-24 18:34:14,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 46 remaining) [2023-08-24 18:34:14,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (2 of 46 remaining) [2023-08-24 18:34:14,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 46 remaining) [2023-08-24 18:34:14,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONASSERT (0 of 46 remaining) [2023-08-24 18:34:14,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 18:34:14,777 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-24 18:34:14,779 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 18:34:14,779 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-24 18:34:14,839 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 18:34:14,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 219 places, 220 transitions, 464 flow [2023-08-24 18:34:14,872 INFO L124 PetriNetUnfolderBase]: 9/216 cut-off events. [2023-08-24 18:34:14,872 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 18:34:14,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 216 events. 9/216 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 454 event pairs, 0 based on Foata normal form. 0/166 useless extension candidates. Maximal degree in co-relation 225. Up to 6 conditions per place. [2023-08-24 18:34:14,875 INFO L82 GeneralOperation]: Start removeDead. Operand has 219 places, 220 transitions, 464 flow [2023-08-24 18:34:14,878 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 195 places, 194 transitions, 403 flow [2023-08-24 18:34:14,878 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 18:34:14,878 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 195 places, 194 transitions, 403 flow [2023-08-24 18:34:14,879 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 195 places, 194 transitions, 403 flow [2023-08-24 18:34:14,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 194 transitions, 403 flow [2023-08-24 18:34:14,908 INFO L124 PetriNetUnfolderBase]: 9/216 cut-off events. [2023-08-24 18:34:14,908 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 18:34:14,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229 conditions, 216 events. 9/216 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 453 event pairs, 0 based on Foata normal form. 0/166 useless extension candidates. Maximal degree in co-relation 204. Up to 6 conditions per place. [2023-08-24 18:34:14,919 INFO L119 LiptonReduction]: Number of co-enabled transitions 19844 [2023-08-24 18:34:17,976 INFO L134 LiptonReduction]: Checked pairs total: 98927 [2023-08-24 18:34:17,976 INFO L136 LiptonReduction]: Total number of compositions: 109 [2023-08-24 18:34:17,978 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 18:34:17,979 INFO L357 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, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@1480b024, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 18:34:17,979 INFO L358 AbstractCegarLoop]: Starting to check reachability of 68 error locations. [2023-08-24 18:34:17,981 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 18:34:17,981 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2023-08-24 18:34:17,981 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 18:34:17,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:34:17,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-24 18:34:17,981 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 64 more)] === [2023-08-24 18:34:17,982 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:34:17,982 INFO L85 PathProgramCache]: Analyzing trace with hash 38308618, now seen corresponding path program 1 times [2023-08-24 18:34:17,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:34:17,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640852884] [2023-08-24 18:34:17,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:34:17,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:34:17,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:34:17,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:34:17,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:34:17,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640852884] [2023-08-24 18:34:17,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640852884] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:34:17,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:34:17,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 18:34:17,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107704126] [2023-08-24 18:34:17,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:34:17,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-24 18:34:17,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:34:17,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-24 18:34:17,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-24 18:34:18,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 329 [2023-08-24 18:34:18,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 114 transitions, 243 flow. Second operand has 2 states, 2 states have (on average 169.5) internal successors, (339), 2 states have internal predecessors, (339), 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) [2023-08-24 18:34:18,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:34:18,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 329 [2023-08-24 18:34:18,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:34:19,359 INFO L124 PetriNetUnfolderBase]: 5565/11545 cut-off events. [2023-08-24 18:34:19,359 INFO L125 PetriNetUnfolderBase]: For 243/243 co-relation queries the response was YES. [2023-08-24 18:34:19,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19667 conditions, 11545 events. 5565/11545 cut-off events. For 243/243 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 97222 event pairs, 4812 based on Foata normal form. 453/10389 useless extension candidates. Maximal degree in co-relation 19656. Up to 7831 conditions per place. [2023-08-24 18:34:19,454 INFO L140 encePairwiseOnDemand]: 306/329 looper letters, 39 selfloop transitions, 0 changer transitions 0/91 dead transitions. [2023-08-24 18:34:19,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 91 transitions, 275 flow [2023-08-24 18:34:19,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-24 18:34:19,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-24 18:34:19,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 398 transitions. [2023-08-24 18:34:19,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6048632218844985 [2023-08-24 18:34:19,456 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 398 transitions. [2023-08-24 18:34:19,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 398 transitions. [2023-08-24 18:34:19,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:34:19,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 398 transitions. [2023-08-24 18:34:19,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 199.0) internal successors, (398), 2 states have internal predecessors, (398), 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) [2023-08-24 18:34:19,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 329.0) internal successors, (987), 3 states have internal predecessors, (987), 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) [2023-08-24 18:34:19,461 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 329.0) internal successors, (987), 3 states have internal predecessors, (987), 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) [2023-08-24 18:34:19,461 INFO L175 Difference]: Start difference. First operand has 118 places, 114 transitions, 243 flow. Second operand 2 states and 398 transitions. [2023-08-24 18:34:19,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 91 transitions, 275 flow [2023-08-24 18:34:19,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 91 transitions, 272 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-24 18:34:19,467 INFO L231 Difference]: Finished difference. Result has 96 places, 91 transitions, 194 flow [2023-08-24 18:34:19,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=194, PETRI_PLACES=96, PETRI_TRANSITIONS=91} [2023-08-24 18:34:19,469 INFO L281 CegarLoopForPetriNet]: 118 programPoint places, -22 predicate places. [2023-08-24 18:34:19,469 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 91 transitions, 194 flow [2023-08-24 18:34:19,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 169.5) internal successors, (339), 2 states have internal predecessors, (339), 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) [2023-08-24 18:34:19,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:34:19,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-24 18:34:19,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 18:34:19,471 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 64 more)] === [2023-08-24 18:34:19,471 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:34:19,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1840088723, now seen corresponding path program 1 times [2023-08-24 18:34:19,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:34:19,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276163874] [2023-08-24 18:34:19,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:34:19,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:34:19,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:34:19,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:34:19,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:34:19,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276163874] [2023-08-24 18:34:19,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276163874] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:34:19,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:34:19,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 18:34:19,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138506551] [2023-08-24 18:34:19,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:34:19,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 18:34:19,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:34:19,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 18:34:19,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 18:34:19,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 329 [2023-08-24 18:34:19,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 91 transitions, 194 flow. Second operand has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 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) [2023-08-24 18:34:19,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:34:19,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 329 [2023-08-24 18:34:19,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:34:26,140 INFO L124 PetriNetUnfolderBase]: 57671/87452 cut-off events. [2023-08-24 18:34:26,141 INFO L125 PetriNetUnfolderBase]: For 911/911 co-relation queries the response was YES. [2023-08-24 18:34:26,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170871 conditions, 87452 events. 57671/87452 cut-off events. For 911/911 co-relation queries the response was YES. Maximal size of possible extension queue 2006. Compared 693828 event pairs, 20318 based on Foata normal form. 0/71839 useless extension candidates. Maximal degree in co-relation 170866. Up to 47143 conditions per place. [2023-08-24 18:34:26,755 INFO L140 encePairwiseOnDemand]: 294/329 looper letters, 113 selfloop transitions, 26 changer transitions 0/155 dead transitions. [2023-08-24 18:34:26,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 155 transitions, 608 flow [2023-08-24 18:34:26,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 18:34:26,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 18:34:26,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 490 transitions. [2023-08-24 18:34:26,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49645390070921985 [2023-08-24 18:34:26,759 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 490 transitions. [2023-08-24 18:34:26,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 490 transitions. [2023-08-24 18:34:26,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:34:26,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 490 transitions. [2023-08-24 18:34:26,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 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) [2023-08-24 18:34:26,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 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) [2023-08-24 18:34:26,763 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 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) [2023-08-24 18:34:26,763 INFO L175 Difference]: Start difference. First operand has 96 places, 91 transitions, 194 flow. Second operand 3 states and 490 transitions. [2023-08-24 18:34:26,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 155 transitions, 608 flow [2023-08-24 18:34:26,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 155 transitions, 608 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 18:34:26,769 INFO L231 Difference]: Finished difference. Result has 100 places, 117 transitions, 420 flow [2023-08-24 18:34:26,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=420, PETRI_PLACES=100, PETRI_TRANSITIONS=117} [2023-08-24 18:34:26,772 INFO L281 CegarLoopForPetriNet]: 118 programPoint places, -18 predicate places. [2023-08-24 18:34:26,774 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 117 transitions, 420 flow [2023-08-24 18:34:26,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 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) [2023-08-24 18:34:26,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:34:26,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:34:26,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 18:34:26,776 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONASSERT === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 64 more)] === [2023-08-24 18:34:26,776 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:34:26,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1208174346, now seen corresponding path program 1 times [2023-08-24 18:34:26,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:34:26,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774852494] [2023-08-24 18:34:26,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:34:26,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:34:26,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:34:26,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:34:26,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:34:26,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774852494] [2023-08-24 18:34:26,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774852494] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:34:26,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:34:26,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 18:34:26,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598754861] [2023-08-24 18:34:26,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:34:26,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 18:34:26,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:34:26,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 18:34:26,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 18:34:26,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 329 [2023-08-24 18:34:26,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 117 transitions, 420 flow. Second operand has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 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) [2023-08-24 18:34:26,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:34:26,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 329 [2023-08-24 18:34:26,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:34:31,700 INFO L124 PetriNetUnfolderBase]: 37204/62154 cut-off events. [2023-08-24 18:34:31,700 INFO L125 PetriNetUnfolderBase]: For 11406/11922 co-relation queries the response was YES. [2023-08-24 18:34:31,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136922 conditions, 62154 events. 37204/62154 cut-off events. For 11406/11922 co-relation queries the response was YES. Maximal size of possible extension queue 1480. Compared 532289 event pairs, 12064 based on Foata normal form. 0/56864 useless extension candidates. Maximal degree in co-relation 136915. Up to 46490 conditions per place. [2023-08-24 18:34:32,146 INFO L140 encePairwiseOnDemand]: 325/329 looper letters, 68 selfloop transitions, 3 changer transitions 0/130 dead transitions. [2023-08-24 18:34:32,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 130 transitions, 593 flow [2023-08-24 18:34:32,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 18:34:32,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 18:34:32,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 506 transitions. [2023-08-24 18:34:32,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5126646403242148 [2023-08-24 18:34:32,149 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 506 transitions. [2023-08-24 18:34:32,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 506 transitions. [2023-08-24 18:34:32,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:34:32,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 506 transitions. [2023-08-24 18:34:32,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 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) [2023-08-24 18:34:32,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 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) [2023-08-24 18:34:32,153 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 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) [2023-08-24 18:34:32,153 INFO L175 Difference]: Start difference. First operand has 100 places, 117 transitions, 420 flow. Second operand 3 states and 506 transitions. [2023-08-24 18:34:32,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 130 transitions, 593 flow [2023-08-24 18:34:32,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 130 transitions, 541 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 18:34:32,207 INFO L231 Difference]: Finished difference. Result has 101 places, 119 transitions, 387 flow [2023-08-24 18:34:32,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=387, PETRI_PLACES=101, PETRI_TRANSITIONS=119} [2023-08-24 18:34:32,208 INFO L281 CegarLoopForPetriNet]: 118 programPoint places, -17 predicate places. [2023-08-24 18:34:32,208 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 119 transitions, 387 flow [2023-08-24 18:34:32,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 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) [2023-08-24 18:34:32,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:34:32,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:34:32,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 18:34:32,209 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr2Err3ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 64 more)] === [2023-08-24 18:34:32,209 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:34:32,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1319666137, now seen corresponding path program 1 times [2023-08-24 18:34:32,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:34:32,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397679064] [2023-08-24 18:34:32,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:34:32,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:34:32,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:34:32,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:34:32,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:34:32,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397679064] [2023-08-24 18:34:32,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397679064] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:34:32,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:34:32,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 18:34:32,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675551622] [2023-08-24 18:34:32,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:34:32,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 18:34:32,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:34:32,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 18:34:32,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 18:34:32,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 329 [2023-08-24 18:34:32,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 119 transitions, 387 flow. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 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) [2023-08-24 18:34:32,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:34:32,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 329 [2023-08-24 18:34:32,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:34:39,038 INFO L124 PetriNetUnfolderBase]: 60251/90139 cut-off events. [2023-08-24 18:34:39,038 INFO L125 PetriNetUnfolderBase]: For 17320/17662 co-relation queries the response was YES. [2023-08-24 18:34:39,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211520 conditions, 90139 events. 60251/90139 cut-off events. For 17320/17662 co-relation queries the response was YES. Maximal size of possible extension queue 2111. Compared 693396 event pairs, 40134 based on Foata normal form. 52/77719 useless extension candidates. Maximal degree in co-relation 211512. Up to 80336 conditions per place. [2023-08-24 18:34:39,597 INFO L140 encePairwiseOnDemand]: 316/329 looper letters, 136 selfloop transitions, 23 changer transitions 0/176 dead transitions. [2023-08-24 18:34:39,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 176 transitions, 896 flow [2023-08-24 18:34:39,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 18:34:39,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 18:34:39,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 451 transitions. [2023-08-24 18:34:39,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4569402228976697 [2023-08-24 18:34:39,600 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 451 transitions. [2023-08-24 18:34:39,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 451 transitions. [2023-08-24 18:34:39,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:34:39,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 451 transitions. [2023-08-24 18:34:39,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 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) [2023-08-24 18:34:39,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 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) [2023-08-24 18:34:39,603 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 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) [2023-08-24 18:34:39,603 INFO L175 Difference]: Start difference. First operand has 101 places, 119 transitions, 387 flow. Second operand 3 states and 451 transitions. [2023-08-24 18:34:39,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 176 transitions, 896 flow [2023-08-24 18:34:39,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 176 transitions, 893 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 18:34:39,608 INFO L231 Difference]: Finished difference. Result has 104 places, 140 transitions, 602 flow [2023-08-24 18:34:39,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=602, PETRI_PLACES=104, PETRI_TRANSITIONS=140} [2023-08-24 18:34:39,609 INFO L281 CegarLoopForPetriNet]: 118 programPoint places, -14 predicate places. [2023-08-24 18:34:39,609 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 140 transitions, 602 flow [2023-08-24 18:34:39,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 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) [2023-08-24 18:34:39,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:34:39,610 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-24 18:34:39,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-24 18:34:39,610 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 64 more)] === [2023-08-24 18:34:39,610 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:34:39,610 INFO L85 PathProgramCache]: Analyzing trace with hash -240217661, now seen corresponding path program 1 times [2023-08-24 18:34:39,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:34:39,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107891084] [2023-08-24 18:34:39,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:34:39,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:34:39,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 18:34:39,628 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 18:34:39,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 18:34:39,648 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 18:34:39,648 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 18:34:39,648 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (67 of 68 remaining) [2023-08-24 18:34:39,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (66 of 68 remaining) [2023-08-24 18:34:39,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (65 of 68 remaining) [2023-08-24 18:34:39,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (64 of 68 remaining) [2023-08-24 18:34:39,649 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (63 of 68 remaining) [2023-08-24 18:34:39,649 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (62 of 68 remaining) [2023-08-24 18:34:39,649 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (61 of 68 remaining) [2023-08-24 18:34:39,649 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (60 of 68 remaining) [2023-08-24 18:34:39,649 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (59 of 68 remaining) [2023-08-24 18:34:39,649 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8ASSERT_VIOLATIONDATA_RACE (58 of 68 remaining) [2023-08-24 18:34:39,649 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9ASSERT_VIOLATIONDATA_RACE (57 of 68 remaining) [2023-08-24 18:34:39,650 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10ASSERT_VIOLATIONDATA_RACE (56 of 68 remaining) [2023-08-24 18:34:39,650 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11ASSERT_VIOLATIONDATA_RACE (55 of 68 remaining) [2023-08-24 18:34:39,650 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err12ASSERT_VIOLATIONDATA_RACE (54 of 68 remaining) [2023-08-24 18:34:39,650 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err13ASSERT_VIOLATIONDATA_RACE (53 of 68 remaining) [2023-08-24 18:34:39,650 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err14ASSERT_VIOLATIONDATA_RACE (52 of 68 remaining) [2023-08-24 18:34:39,650 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err15ASSERT_VIOLATIONDATA_RACE (51 of 68 remaining) [2023-08-24 18:34:39,650 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (50 of 68 remaining) [2023-08-24 18:34:39,650 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (49 of 68 remaining) [2023-08-24 18:34:39,650 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (48 of 68 remaining) [2023-08-24 18:34:39,650 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (47 of 68 remaining) [2023-08-24 18:34:39,650 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (46 of 68 remaining) [2023-08-24 18:34:39,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONASSERT (45 of 68 remaining) [2023-08-24 18:34:39,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (44 of 68 remaining) [2023-08-24 18:34:39,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (43 of 68 remaining) [2023-08-24 18:34:39,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (42 of 68 remaining) [2023-08-24 18:34:39,653 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (41 of 68 remaining) [2023-08-24 18:34:39,653 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (40 of 68 remaining) [2023-08-24 18:34:39,653 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (39 of 68 remaining) [2023-08-24 18:34:39,653 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (38 of 68 remaining) [2023-08-24 18:34:39,654 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (37 of 68 remaining) [2023-08-24 18:34:39,654 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (36 of 68 remaining) [2023-08-24 18:34:39,654 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8ASSERT_VIOLATIONDATA_RACE (35 of 68 remaining) [2023-08-24 18:34:39,654 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9ASSERT_VIOLATIONDATA_RACE (34 of 68 remaining) [2023-08-24 18:34:39,654 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10ASSERT_VIOLATIONDATA_RACE (33 of 68 remaining) [2023-08-24 18:34:39,654 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11ASSERT_VIOLATIONDATA_RACE (32 of 68 remaining) [2023-08-24 18:34:39,654 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err12ASSERT_VIOLATIONDATA_RACE (31 of 68 remaining) [2023-08-24 18:34:39,655 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err13ASSERT_VIOLATIONDATA_RACE (30 of 68 remaining) [2023-08-24 18:34:39,655 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err14ASSERT_VIOLATIONDATA_RACE (29 of 68 remaining) [2023-08-24 18:34:39,655 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err15ASSERT_VIOLATIONDATA_RACE (28 of 68 remaining) [2023-08-24 18:34:39,655 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (27 of 68 remaining) [2023-08-24 18:34:39,655 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (26 of 68 remaining) [2023-08-24 18:34:39,655 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (25 of 68 remaining) [2023-08-24 18:34:39,655 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (24 of 68 remaining) [2023-08-24 18:34:39,655 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (23 of 68 remaining) [2023-08-24 18:34:39,655 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (22 of 68 remaining) [2023-08-24 18:34:39,656 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (21 of 68 remaining) [2023-08-24 18:34:39,656 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (20 of 68 remaining) [2023-08-24 18:34:39,656 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8ASSERT_VIOLATIONDATA_RACE (19 of 68 remaining) [2023-08-24 18:34:39,656 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9ASSERT_VIOLATIONDATA_RACE (18 of 68 remaining) [2023-08-24 18:34:39,656 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10ASSERT_VIOLATIONDATA_RACE (17 of 68 remaining) [2023-08-24 18:34:39,656 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11ASSERT_VIOLATIONDATA_RACE (16 of 68 remaining) [2023-08-24 18:34:39,656 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err12ASSERT_VIOLATIONDATA_RACE (15 of 68 remaining) [2023-08-24 18:34:39,656 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err13ASSERT_VIOLATIONDATA_RACE (14 of 68 remaining) [2023-08-24 18:34:39,656 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err14ASSERT_VIOLATIONDATA_RACE (13 of 68 remaining) [2023-08-24 18:34:39,657 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err15ASSERT_VIOLATIONDATA_RACE (12 of 68 remaining) [2023-08-24 18:34:39,657 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 68 remaining) [2023-08-24 18:34:39,657 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 68 remaining) [2023-08-24 18:34:39,657 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 68 remaining) [2023-08-24 18:34:39,657 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (8 of 68 remaining) [2023-08-24 18:34:39,657 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (7 of 68 remaining) [2023-08-24 18:34:39,657 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONASSERT (6 of 68 remaining) [2023-08-24 18:34:39,657 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 68 remaining) [2023-08-24 18:34:39,657 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 68 remaining) [2023-08-24 18:34:39,657 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 68 remaining) [2023-08-24 18:34:39,658 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (2 of 68 remaining) [2023-08-24 18:34:39,658 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 68 remaining) [2023-08-24 18:34:39,658 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONASSERT (0 of 68 remaining) [2023-08-24 18:34:39,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-24 18:34:39,658 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-24 18:34:39,659 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 18:34:39,659 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-24 18:34:39,744 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 18:34:39,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 311 places, 313 transitions, 668 flow [2023-08-24 18:34:39,794 INFO L124 PetriNetUnfolderBase]: 11/296 cut-off events. [2023-08-24 18:34:39,794 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-24 18:34:39,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317 conditions, 296 events. 11/296 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 818 event pairs, 0 based on Foata normal form. 0/227 useless extension candidates. Maximal degree in co-relation 310. Up to 8 conditions per place. [2023-08-24 18:34:39,799 INFO L82 GeneralOperation]: Start removeDead. Operand has 311 places, 313 transitions, 668 flow [2023-08-24 18:34:39,802 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 264 places, 262 transitions, 548 flow [2023-08-24 18:34:39,802 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 18:34:39,802 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 264 places, 262 transitions, 548 flow [2023-08-24 18:34:39,802 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 264 places, 262 transitions, 548 flow [2023-08-24 18:34:39,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 264 places, 262 transitions, 548 flow [2023-08-24 18:34:39,842 INFO L124 PetriNetUnfolderBase]: 11/296 cut-off events. [2023-08-24 18:34:39,843 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-24 18:34:39,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 315 conditions, 296 events. 11/296 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 817 event pairs, 0 based on Foata normal form. 0/227 useless extension candidates. Maximal degree in co-relation 289. Up to 8 conditions per place. [2023-08-24 18:34:39,863 INFO L119 LiptonReduction]: Number of co-enabled transitions 43074 [2023-08-24 18:34:43,977 INFO L134 LiptonReduction]: Checked pairs total: 201017 [2023-08-24 18:34:43,977 INFO L136 LiptonReduction]: Total number of compositions: 149 [2023-08-24 18:34:43,978 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 18:34:43,979 INFO L357 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, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@1480b024, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 18:34:43,979 INFO L358 AbstractCegarLoop]: Starting to check reachability of 90 error locations. [2023-08-24 18:34:43,980 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 18:34:43,980 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2023-08-24 18:34:43,980 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 18:34:43,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:34:43,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-24 18:34:43,980 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2023-08-24 18:34:43,981 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:34:43,981 INFO L85 PathProgramCache]: Analyzing trace with hash 55382815, now seen corresponding path program 1 times [2023-08-24 18:34:43,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:34:43,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594046368] [2023-08-24 18:34:43,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:34:43,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:34:43,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:34:43,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:34:43,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:34:43,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594046368] [2023-08-24 18:34:43,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594046368] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:34:43,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:34:43,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 18:34:43,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114830802] [2023-08-24 18:34:43,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:34:43,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-24 18:34:43,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:34:43,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-24 18:34:43,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-24 18:34:43,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 462 [2023-08-24 18:34:43,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 160 transitions, 344 flow. Second operand has 2 states, 2 states have (on average 237.5) internal successors, (475), 2 states have internal predecessors, (475), 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) [2023-08-24 18:34:44,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:34:44,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 462 [2023-08-24 18:34:44,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:35:02,157 INFO L124 PetriNetUnfolderBase]: 117315/208355 cut-off events. [2023-08-24 18:35:02,158 INFO L125 PetriNetUnfolderBase]: For 7283/7283 co-relation queries the response was YES. [2023-08-24 18:35:02,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 364703 conditions, 208355 events. 117315/208355 cut-off events. For 7283/7283 co-relation queries the response was YES. Maximal size of possible extension queue 4080. Compared 2203951 event pairs, 103772 based on Foata normal form. 6783/188051 useless extension candidates. Maximal degree in co-relation 364691. Up to 151231 conditions per place. [2023-08-24 18:35:03,781 INFO L140 encePairwiseOnDemand]: 431/462 looper letters, 55 selfloop transitions, 0 changer transitions 0/129 dead transitions. [2023-08-24 18:35:03,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 129 transitions, 392 flow [2023-08-24 18:35:03,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-24 18:35:03,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-24 18:35:03,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 558 transitions. [2023-08-24 18:35:03,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6038961038961039 [2023-08-24 18:35:03,784 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 558 transitions. [2023-08-24 18:35:03,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 558 transitions. [2023-08-24 18:35:03,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:35:03,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 558 transitions. [2023-08-24 18:35:03,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 279.0) internal successors, (558), 2 states have internal predecessors, (558), 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) [2023-08-24 18:35:03,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 462.0) internal successors, (1386), 3 states have internal predecessors, (1386), 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) [2023-08-24 18:35:03,788 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 462.0) internal successors, (1386), 3 states have internal predecessors, (1386), 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) [2023-08-24 18:35:03,788 INFO L175 Difference]: Start difference. First operand has 165 places, 160 transitions, 344 flow. Second operand 2 states and 558 transitions. [2023-08-24 18:35:03,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 129 transitions, 392 flow [2023-08-24 18:35:03,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 129 transitions, 385 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-24 18:35:03,797 INFO L231 Difference]: Finished difference. Result has 135 places, 129 transitions, 275 flow [2023-08-24 18:35:03,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=275, PETRI_PLACES=135, PETRI_TRANSITIONS=129} [2023-08-24 18:35:03,798 INFO L281 CegarLoopForPetriNet]: 165 programPoint places, -30 predicate places. [2023-08-24 18:35:03,798 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 129 transitions, 275 flow [2023-08-24 18:35:03,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 237.5) internal successors, (475), 2 states have internal predecessors, (475), 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) [2023-08-24 18:35:03,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:35:03,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-24 18:35:03,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-24 18:35:03,799 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2023-08-24 18:35:03,799 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:35:03,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1683329122, now seen corresponding path program 1 times [2023-08-24 18:35:03,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:35:03,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575681719] [2023-08-24 18:35:03,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:35:03,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:35:03,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:35:03,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:35:03,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:35:03,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575681719] [2023-08-24 18:35:03,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575681719] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:35:03,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:35:03,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 18:35:03,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021848201] [2023-08-24 18:35:03,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:35:03,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 18:35:03,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:35:03,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 18:35:03,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 18:35:03,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 462 [2023-08-24 18:35:03,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 129 transitions, 275 flow. Second operand has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 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) [2023-08-24 18:35:03,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:35:03,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 462 [2023-08-24 18:35:03,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand