/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 --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -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/weaver/mult-dist.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 09:07:05,994 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 09:07:06,032 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 [2023-08-26 09:07:06,035 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 09:07:06,035 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 09:07:06,058 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 09:07:06,059 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 09:07:06,059 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 09:07:06,059 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 09:07:06,062 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 09:07:06,062 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 09:07:06,062 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 09:07:06,063 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 09:07:06,063 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 09:07:06,064 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 09:07:06,064 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 09:07:06,064 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 09:07:06,064 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 09:07:06,064 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 09:07:06,064 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 09:07:06,064 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 09:07:06,065 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 09:07:06,065 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 09:07:06,066 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 09:07:06,066 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 09:07:06,066 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 09:07:06,066 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 09:07:06,067 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 09:07:06,067 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 09:07:06,067 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 09:07:06,068 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 09:07:06,068 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 09:07:06,068 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 09:07:06,068 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 09:07:06,068 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 09:07:06,068 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-26 09:07:06,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 09:07:06,345 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 09:07:06,347 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 09:07:06,348 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 09:07:06,348 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 09:07:06,349 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/mult-dist.wvr.c [2023-08-26 09:07:07,316 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 09:07:07,480 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 09:07:07,480 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/mult-dist.wvr.c [2023-08-26 09:07:07,485 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/658236bfa/b344e0577f0b4bc690693e1cf13dc1d6/FLAGccb517fa7 [2023-08-26 09:07:07,498 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/658236bfa/b344e0577f0b4bc690693e1cf13dc1d6 [2023-08-26 09:07:07,501 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 09:07:07,502 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 09:07:07,505 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 09:07:07,505 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 09:07:07,507 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 09:07:07,508 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 09:07:07" (1/1) ... [2023-08-26 09:07:07,508 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63a652da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:07:07, skipping insertion in model container [2023-08-26 09:07:07,508 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 09:07:07" (1/1) ... [2023-08-26 09:07:07,524 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 09:07:07,636 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 09:07:07,642 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 09:07:07,658 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 09:07:07,667 INFO L206 MainTranslator]: Completed translation [2023-08-26 09:07:07,667 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:07:07 WrapperNode [2023-08-26 09:07:07,667 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 09:07:07,668 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 09:07:07,668 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 09:07:07,668 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 09:07:07,672 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:07:07" (1/1) ... [2023-08-26 09:07:07,677 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:07:07" (1/1) ... [2023-08-26 09:07:07,690 INFO L138 Inliner]: procedures = 22, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 108 [2023-08-26 09:07:07,690 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 09:07:07,690 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 09:07:07,690 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 09:07:07,690 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 09:07:07,695 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:07:07" (1/1) ... [2023-08-26 09:07:07,695 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:07:07" (1/1) ... [2023-08-26 09:07:07,698 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:07:07" (1/1) ... [2023-08-26 09:07:07,698 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:07:07" (1/1) ... [2023-08-26 09:07:07,702 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:07:07" (1/1) ... [2023-08-26 09:07:07,705 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:07:07" (1/1) ... [2023-08-26 09:07:07,706 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:07:07" (1/1) ... [2023-08-26 09:07:07,706 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:07:07" (1/1) ... [2023-08-26 09:07:07,708 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 09:07:07,708 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 09:07:07,708 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 09:07:07,708 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 09:07:07,709 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:07:07" (1/1) ... [2023-08-26 09:07:07,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 09:07:07,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:07:07,730 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) [2023-08-26 09:07:07,737 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 [2023-08-26 09:07:07,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 09:07:07,752 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-26 09:07:07,752 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-26 09:07:07,752 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-26 09:07:07,753 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-26 09:07:07,753 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-26 09:07:07,753 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-26 09:07:07,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 09:07:07,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 09:07:07,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 09:07:07,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 09:07:07,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 09:07:07,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 09:07:07,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 09:07:07,754 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 09:07:07,822 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 09:07:07,824 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 09:07:08,013 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 09:07:08,019 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 09:07:08,019 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-26 09:07:08,021 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 09:07:08 BoogieIcfgContainer [2023-08-26 09:07:08,021 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 09:07:08,022 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 09:07:08,022 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 09:07:08,024 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 09:07:08,025 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 09:07:07" (1/3) ... [2023-08-26 09:07:08,025 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19466fca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 09:07:08, skipping insertion in model container [2023-08-26 09:07:08,025 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:07:07" (2/3) ... [2023-08-26 09:07:08,025 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19466fca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 09:07:08, skipping insertion in model container [2023-08-26 09:07:08,025 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 09:07:08" (3/3) ... [2023-08-26 09:07:08,026 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-dist.wvr.c [2023-08-26 09:07:08,037 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 09:07:08,037 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2023-08-26 09:07:08,037 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 09:07:08,108 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-26 09:07:08,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 199 places, 196 transitions, 416 flow [2023-08-26 09:07:08,201 INFO L124 PetriNetUnfolderBase]: 7/193 cut-off events. [2023-08-26 09:07:08,201 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-26 09:07:08,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 193 events. 7/193 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 278 event pairs, 0 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 111. Up to 2 conditions per place. [2023-08-26 09:07:08,207 INFO L82 GeneralOperation]: Start removeDead. Operand has 199 places, 196 transitions, 416 flow [2023-08-26 09:07:08,214 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 185 places, 182 transitions, 382 flow [2023-08-26 09:07:08,216 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 09:07:08,231 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 185 places, 182 transitions, 382 flow [2023-08-26 09:07:08,235 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 185 places, 182 transitions, 382 flow [2023-08-26 09:07:08,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 182 transitions, 382 flow [2023-08-26 09:07:08,278 INFO L124 PetriNetUnfolderBase]: 7/182 cut-off events. [2023-08-26 09:07:08,278 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-26 09:07:08,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 182 events. 7/182 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 277 event pairs, 0 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 111. Up to 2 conditions per place. [2023-08-26 09:07:08,285 INFO L119 LiptonReduction]: Number of co-enabled transitions 7812 [2023-08-26 09:07:11,015 INFO L134 LiptonReduction]: Checked pairs total: 20334 [2023-08-26 09:07:11,015 INFO L136 LiptonReduction]: Total number of compositions: 180 [2023-08-26 09:07:11,024 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 09:07:11,033 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;@60d96cb7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 09:07:11,033 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2023-08-26 09:07:11,034 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 09:07:11,034 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 09:07:11,034 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 09:07:11,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:07:11,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 09:07:11,035 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2023-08-26 09:07:11,038 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:07:11,039 INFO L85 PathProgramCache]: Analyzing trace with hash 714, now seen corresponding path program 1 times [2023-08-26 09:07:11,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:07:11,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971198277] [2023-08-26 09:07:11,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:07:11,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:07:11,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:07:11,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:07:11,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:07:11,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971198277] [2023-08-26 09:07:11,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971198277] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:07:11,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:07:11,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 09:07:11,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586253323] [2023-08-26 09:07:11,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:07:11,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 09:07:11,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:07:11,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 09:07:11,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 09:07:11,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 376 [2023-08-26 09:07:11,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 134 flow. Second operand has 2 states, 2 states have (on average 185.5) internal successors, (371), 2 states have internal predecessors, (371), 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) [2023-08-26 09:07:11,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:07:11,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 376 [2023-08-26 09:07:11,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:07:11,240 INFO L124 PetriNetUnfolderBase]: 654/1299 cut-off events. [2023-08-26 09:07:11,240 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-08-26 09:07:11,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2268 conditions, 1299 events. 654/1299 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 7821 event pairs, 370 based on Foata normal form. 416/1325 useless extension candidates. Maximal degree in co-relation 1932. Up to 892 conditions per place. [2023-08-26 09:07:11,248 INFO L140 encePairwiseOnDemand]: 358/376 looper letters, 23 selfloop transitions, 0 changer transitions 0/40 dead transitions. [2023-08-26 09:07:11,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 40 transitions, 144 flow [2023-08-26 09:07:11,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 09:07:11,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 09:07:11,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 411 transitions. [2023-08-26 09:07:11,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5465425531914894 [2023-08-26 09:07:11,257 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 411 transitions. [2023-08-26 09:07:11,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 411 transitions. [2023-08-26 09:07:11,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:07:11,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 411 transitions. [2023-08-26 09:07:11,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 205.5) internal successors, (411), 2 states have internal predecessors, (411), 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) [2023-08-26 09:07:11,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 376.0) internal successors, (1128), 3 states have internal predecessors, (1128), 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) [2023-08-26 09:07:11,265 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 376.0) internal successors, (1128), 3 states have internal predecessors, (1128), 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) [2023-08-26 09:07:11,266 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 134 flow. Second operand 2 states and 411 transitions. [2023-08-26 09:07:11,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 40 transitions, 144 flow [2023-08-26 09:07:11,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 40 transitions, 132 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-26 09:07:11,270 INFO L231 Difference]: Finished difference. Result has 42 places, 40 transitions, 86 flow [2023-08-26 09:07:11,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=86, PETRI_PLACES=42, PETRI_TRANSITIONS=40} [2023-08-26 09:07:11,273 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -20 predicate places. [2023-08-26 09:07:11,273 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 40 transitions, 86 flow [2023-08-26 09:07:11,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 185.5) internal successors, (371), 2 states have internal predecessors, (371), 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) [2023-08-26 09:07:11,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:07:11,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 09:07:11,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 09:07:11,274 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2023-08-26 09:07:11,274 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:07:11,274 INFO L85 PathProgramCache]: Analyzing trace with hash 676583453, now seen corresponding path program 1 times [2023-08-26 09:07:11,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:07:11,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785941817] [2023-08-26 09:07:11,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:07:11,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:07:11,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:07:11,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:07:11,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:07:11,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785941817] [2023-08-26 09:07:11,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785941817] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:07:11,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:07:11,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 09:07:11,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129897304] [2023-08-26 09:07:11,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:07:11,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 09:07:11,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:07:11,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 09:07:11,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 09:07:11,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 376 [2023-08-26 09:07:11,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 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) [2023-08-26 09:07:11,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:07:11,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 376 [2023-08-26 09:07:11,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:07:11,458 INFO L124 PetriNetUnfolderBase]: 1030/1674 cut-off events. [2023-08-26 09:07:11,458 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-08-26 09:07:11,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3148 conditions, 1674 events. 1030/1674 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 9231 event pairs, 222 based on Foata normal form. 0/1357 useless extension candidates. Maximal degree in co-relation 3145. Up to 1407 conditions per place. [2023-08-26 09:07:11,466 INFO L140 encePairwiseOnDemand]: 372/376 looper letters, 34 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2023-08-26 09:07:11,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 48 transitions, 176 flow [2023-08-26 09:07:11,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 09:07:11,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 09:07:11,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 566 transitions. [2023-08-26 09:07:11,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.50177304964539 [2023-08-26 09:07:11,469 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 566 transitions. [2023-08-26 09:07:11,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 566 transitions. [2023-08-26 09:07:11,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:07:11,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 566 transitions. [2023-08-26 09:07:11,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 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) [2023-08-26 09:07:11,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 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) [2023-08-26 09:07:11,474 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 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) [2023-08-26 09:07:11,474 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 86 flow. Second operand 3 states and 566 transitions. [2023-08-26 09:07:11,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 48 transitions, 176 flow [2023-08-26 09:07:11,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 48 transitions, 176 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 09:07:11,475 INFO L231 Difference]: Finished difference. Result has 43 places, 40 transitions, 96 flow [2023-08-26 09:07:11,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=43, PETRI_TRANSITIONS=40} [2023-08-26 09:07:11,476 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -19 predicate places. [2023-08-26 09:07:11,476 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 40 transitions, 96 flow [2023-08-26 09:07:11,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 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) [2023-08-26 09:07:11,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:07:11,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:07:11,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 09:07:11,478 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2023-08-26 09:07:11,482 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:07:11,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1656816809, now seen corresponding path program 1 times [2023-08-26 09:07:11,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:07:11,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146226120] [2023-08-26 09:07:11,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:07:11,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:07:11,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:07:11,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:07:11,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:07:11,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146226120] [2023-08-26 09:07:11,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146226120] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:07:11,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:07:11,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 09:07:11,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44072276] [2023-08-26 09:07:11,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:07:11,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 09:07:11,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:07:11,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 09:07:11,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 09:07:11,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 376 [2023-08-26 09:07:11,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 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) [2023-08-26 09:07:11,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:07:11,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 376 [2023-08-26 09:07:11,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:07:11,681 INFO L124 PetriNetUnfolderBase]: 1361/2354 cut-off events. [2023-08-26 09:07:11,681 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-08-26 09:07:11,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4386 conditions, 2354 events. 1361/2354 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 14501 event pairs, 230 based on Foata normal form. 0/1770 useless extension candidates. Maximal degree in co-relation 4382. Up to 1558 conditions per place. [2023-08-26 09:07:11,692 INFO L140 encePairwiseOnDemand]: 370/376 looper letters, 42 selfloop transitions, 3 changer transitions 0/57 dead transitions. [2023-08-26 09:07:11,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 57 transitions, 225 flow [2023-08-26 09:07:11,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 09:07:11,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 09:07:11,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 567 transitions. [2023-08-26 09:07:11,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026595744680851 [2023-08-26 09:07:11,693 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 567 transitions. [2023-08-26 09:07:11,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 567 transitions. [2023-08-26 09:07:11,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:07:11,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 567 transitions. [2023-08-26 09:07:11,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 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) [2023-08-26 09:07:11,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 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) [2023-08-26 09:07:11,697 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 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) [2023-08-26 09:07:11,697 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 96 flow. Second operand 3 states and 567 transitions. [2023-08-26 09:07:11,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 57 transitions, 225 flow [2023-08-26 09:07:11,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 57 transitions, 225 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 09:07:11,700 INFO L231 Difference]: Finished difference. Result has 43 places, 40 transitions, 111 flow [2023-08-26 09:07:11,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=111, PETRI_PLACES=43, PETRI_TRANSITIONS=40} [2023-08-26 09:07:11,701 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -19 predicate places. [2023-08-26 09:07:11,701 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 40 transitions, 111 flow [2023-08-26 09:07:11,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 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) [2023-08-26 09:07:11,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:07:11,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:07:11,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 09:07:11,704 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2023-08-26 09:07:11,705 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:07:11,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1874264588, now seen corresponding path program 1 times [2023-08-26 09:07:11,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:07:11,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009450319] [2023-08-26 09:07:11,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:07:11,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:07:11,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:07:11,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:07:11,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:07:11,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009450319] [2023-08-26 09:07:11,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009450319] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:07:11,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:07:11,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 09:07:11,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835839740] [2023-08-26 09:07:11,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:07:11,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 09:07:11,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:07:11,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 09:07:11,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 09:07:11,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 376 [2023-08-26 09:07:11,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:07:11,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:07:11,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 376 [2023-08-26 09:07:11,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:07:11,873 INFO L124 PetriNetUnfolderBase]: 1414/2357 cut-off events. [2023-08-26 09:07:11,873 INFO L125 PetriNetUnfolderBase]: For 169/169 co-relation queries the response was YES. [2023-08-26 09:07:11,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4907 conditions, 2357 events. 1414/2357 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 13398 event pairs, 287 based on Foata normal form. 0/1925 useless extension candidates. Maximal degree in co-relation 4902. Up to 1865 conditions per place. [2023-08-26 09:07:11,884 INFO L140 encePairwiseOnDemand]: 372/376 looper letters, 36 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2023-08-26 09:07:11,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 50 transitions, 214 flow [2023-08-26 09:07:11,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 09:07:11,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 09:07:11,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 566 transitions. [2023-08-26 09:07:11,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.50177304964539 [2023-08-26 09:07:11,885 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 566 transitions. [2023-08-26 09:07:11,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 566 transitions. [2023-08-26 09:07:11,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:07:11,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 566 transitions. [2023-08-26 09:07:11,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 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) [2023-08-26 09:07:11,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 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) [2023-08-26 09:07:11,889 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 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) [2023-08-26 09:07:11,889 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 111 flow. Second operand 3 states and 566 transitions. [2023-08-26 09:07:11,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 50 transitions, 214 flow [2023-08-26 09:07:11,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 50 transitions, 214 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 09:07:11,890 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 121 flow [2023-08-26 09:07:11,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=121, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2023-08-26 09:07:11,891 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -18 predicate places. [2023-08-26 09:07:11,891 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 121 flow [2023-08-26 09:07:11,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:07:11,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:07:11,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:07:11,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 09:07:11,892 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2023-08-26 09:07:11,892 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:07:11,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1052565032, now seen corresponding path program 1 times [2023-08-26 09:07:11,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:07:11,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432496388] [2023-08-26 09:07:11,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:07:11,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:07:11,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:07:12,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:07:12,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:07:12,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432496388] [2023-08-26 09:07:12,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432496388] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:07:12,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:07:12,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 09:07:12,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908331688] [2023-08-26 09:07:12,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:07:12,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 09:07:12,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:07:12,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 09:07:12,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 09:07:12,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 376 [2023-08-26 09:07:12,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 121 flow. Second operand has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 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) [2023-08-26 09:07:12,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:07:12,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 376 [2023-08-26 09:07:12,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:07:12,277 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([477] L57-2-->L57-3: Formula: (= |v_#race~b~0_4| 0) InVars {} OutVars{#race~b~0=|v_#race~b~0_4|} AuxVars[] AssignedVars[#race~b~0][33], [40#L74-4true, Black: 205#true, 220#true, Black: 210#true, 180#L41-1true, 12#L57-3true, 76#L49-1true, 207#(= |#race~a~0| 0), Black: 215#true, 202#true, 217#(= |#race~b~0| 0), 212#(= |#race~c~0| 0)]) [2023-08-26 09:07:12,277 INFO L294 olderBase$Statistics]: this new event has 20 ancestors and is cut-off event [2023-08-26 09:07:12,277 INFO L297 olderBase$Statistics]: existing Event has 22 ancestors and is cut-off event [2023-08-26 09:07:12,277 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2023-08-26 09:07:12,281 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2023-08-26 09:07:12,293 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([477] L57-2-->L57-3: Formula: (= |v_#race~b~0_4| 0) InVars {} OutVars{#race~b~0=|v_#race~b~0_4|} AuxVars[] AssignedVars[#race~b~0][33], [Black: 205#true, 220#true, Black: 210#true, 12#L57-3true, 180#L41-1true, 76#L49-1true, 207#(= |#race~a~0| 0), 98#L75-6true, Black: 215#true, 202#true, 217#(= |#race~b~0| 0), 212#(= |#race~c~0| 0)]) [2023-08-26 09:07:12,293 INFO L294 olderBase$Statistics]: this new event has 21 ancestors and is cut-off event [2023-08-26 09:07:12,293 INFO L297 olderBase$Statistics]: existing Event has 23 ancestors and is cut-off event [2023-08-26 09:07:12,293 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2023-08-26 09:07:12,293 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2023-08-26 09:07:12,319 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([447] L49-7-->L49-1: Formula: (= |v_#race~b~0_1| 0) InVars {} OutVars{#race~b~0=|v_#race~b~0_1|} AuxVars[] AssignedVars[#race~b~0][34], [40#L74-4true, Black: 205#true, 220#true, Black: 210#true, 180#L41-1true, 12#L57-3true, 76#L49-1true, 207#(= |#race~a~0| 0), Black: 215#true, 202#true, 217#(= |#race~b~0| 0), 212#(= |#race~c~0| 0)]) [2023-08-26 09:07:12,320 INFO L294 olderBase$Statistics]: this new event has 24 ancestors and is cut-off event [2023-08-26 09:07:12,320 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2023-08-26 09:07:12,320 INFO L297 olderBase$Statistics]: existing Event has 22 ancestors and is cut-off event [2023-08-26 09:07:12,320 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2023-08-26 09:07:12,327 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([447] L49-7-->L49-1: Formula: (= |v_#race~b~0_1| 0) InVars {} OutVars{#race~b~0=|v_#race~b~0_1|} AuxVars[] AssignedVars[#race~b~0][34], [Black: 205#true, 220#true, Black: 210#true, 180#L41-1true, 12#L57-3true, 76#L49-1true, 207#(= |#race~a~0| 0), 98#L75-6true, Black: 215#true, 202#true, 217#(= |#race~b~0| 0), 212#(= |#race~c~0| 0)]) [2023-08-26 09:07:12,327 INFO L294 olderBase$Statistics]: this new event has 25 ancestors and is cut-off event [2023-08-26 09:07:12,328 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2023-08-26 09:07:12,328 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2023-08-26 09:07:12,328 INFO L297 olderBase$Statistics]: existing Event has 23 ancestors and is cut-off event [2023-08-26 09:07:12,336 INFO L124 PetriNetUnfolderBase]: 1443/2450 cut-off events. [2023-08-26 09:07:12,336 INFO L125 PetriNetUnfolderBase]: For 101/101 co-relation queries the response was YES. [2023-08-26 09:07:12,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5035 conditions, 2450 events. 1443/2450 cut-off events. For 101/101 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 14729 event pairs, 290 based on Foata normal form. 1/1820 useless extension candidates. Maximal degree in co-relation 5029. Up to 1381 conditions per place. [2023-08-26 09:07:12,349 INFO L140 encePairwiseOnDemand]: 371/376 looper letters, 39 selfloop transitions, 4 changer transitions 1/60 dead transitions. [2023-08-26 09:07:12,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 60 transitions, 256 flow [2023-08-26 09:07:12,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 09:07:12,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 09:07:12,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 578 transitions. [2023-08-26 09:07:12,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5124113475177305 [2023-08-26 09:07:12,350 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 578 transitions. [2023-08-26 09:07:12,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 578 transitions. [2023-08-26 09:07:12,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:07:12,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 578 transitions. [2023-08-26 09:07:12,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 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) [2023-08-26 09:07:12,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 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) [2023-08-26 09:07:12,354 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 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) [2023-08-26 09:07:12,354 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 121 flow. Second operand 3 states and 578 transitions. [2023-08-26 09:07:12,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 60 transitions, 256 flow [2023-08-26 09:07:12,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 60 transitions, 256 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 09:07:12,356 INFO L231 Difference]: Finished difference. Result has 47 places, 43 transitions, 147 flow [2023-08-26 09:07:12,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=147, PETRI_PLACES=47, PETRI_TRANSITIONS=43} [2023-08-26 09:07:12,358 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -15 predicate places. [2023-08-26 09:07:12,358 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 43 transitions, 147 flow [2023-08-26 09:07:12,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 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) [2023-08-26 09:07:12,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:07:12,359 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:07:12,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 09:07:12,359 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2023-08-26 09:07:12,360 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:07:12,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1069225158, now seen corresponding path program 1 times [2023-08-26 09:07:12,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:07:12,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279636629] [2023-08-26 09:07:12,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:07:12,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:07:12,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:07:12,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:07:12,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:07:12,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279636629] [2023-08-26 09:07:12,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279636629] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:07:12,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:07:12,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-26 09:07:12,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990919582] [2023-08-26 09:07:12,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:07:12,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 09:07:12,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:07:12,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 09:07:12,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-26 09:07:12,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 376 [2023-08-26 09:07:12,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 43 transitions, 147 flow. Second operand has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 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) [2023-08-26 09:07:12,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:07:12,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 376 [2023-08-26 09:07:12,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:07:13,072 INFO L124 PetriNetUnfolderBase]: 2672/4355 cut-off events. [2023-08-26 09:07:13,072 INFO L125 PetriNetUnfolderBase]: For 725/779 co-relation queries the response was YES. [2023-08-26 09:07:13,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10148 conditions, 4355 events. 2672/4355 cut-off events. For 725/779 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 27698 event pairs, 794 based on Foata normal form. 22/3483 useless extension candidates. Maximal degree in co-relation 10140. Up to 1410 conditions per place. [2023-08-26 09:07:13,094 INFO L140 encePairwiseOnDemand]: 365/376 looper letters, 88 selfloop transitions, 13 changer transitions 0/114 dead transitions. [2023-08-26 09:07:13,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 114 transitions, 550 flow [2023-08-26 09:07:13,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 09:07:13,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 09:07:13,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1233 transitions. [2023-08-26 09:07:13,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4684650455927052 [2023-08-26 09:07:13,097 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1233 transitions. [2023-08-26 09:07:13,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1233 transitions. [2023-08-26 09:07:13,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:07:13,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1233 transitions. [2023-08-26 09:07:13,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 176.14285714285714) internal successors, (1233), 7 states have internal predecessors, (1233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:07:13,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 376.0) internal successors, (3008), 8 states have internal predecessors, (3008), 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) [2023-08-26 09:07:13,102 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 376.0) internal successors, (3008), 8 states have internal predecessors, (3008), 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) [2023-08-26 09:07:13,102 INFO L175 Difference]: Start difference. First operand has 47 places, 43 transitions, 147 flow. Second operand 7 states and 1233 transitions. [2023-08-26 09:07:13,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 114 transitions, 550 flow [2023-08-26 09:07:13,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 114 transitions, 537 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 09:07:13,105 INFO L231 Difference]: Finished difference. Result has 57 places, 54 transitions, 250 flow [2023-08-26 09:07:13,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=250, PETRI_PLACES=57, PETRI_TRANSITIONS=54} [2023-08-26 09:07:13,105 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -5 predicate places. [2023-08-26 09:07:13,106 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 54 transitions, 250 flow [2023-08-26 09:07:13,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 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) [2023-08-26 09:07:13,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:07:13,106 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:07:13,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 09:07:13,106 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2023-08-26 09:07:13,107 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:07:13,107 INFO L85 PathProgramCache]: Analyzing trace with hash 710002572, now seen corresponding path program 2 times [2023-08-26 09:07:13,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:07:13,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786367938] [2023-08-26 09:07:13,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:07:13,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:07:13,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:07:13,261 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:07:13,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:07:13,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786367938] [2023-08-26 09:07:13,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786367938] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:07:13,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724015163] [2023-08-26 09:07:13,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 09:07:13,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:07:13,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:07:13,264 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:07:13,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-26 09:07:13,402 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 09:07:13,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:07:13,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-26 09:07:13,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:07:13,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:07:13,619 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:07:13,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:07:13,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724015163] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-26 09:07:13,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-26 09:07:13,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 9] total 16 [2023-08-26 09:07:13,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126490685] [2023-08-26 09:07:13,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:07:13,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 09:07:13,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:07:13,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 09:07:13,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2023-08-26 09:07:13,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 376 [2023-08-26 09:07:13,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 54 transitions, 250 flow. Second operand has 6 states, 6 states have (on average 170.33333333333334) internal successors, (1022), 6 states have internal predecessors, (1022), 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) [2023-08-26 09:07:13,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:07:13,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 376 [2023-08-26 09:07:13,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:07:14,455 INFO L124 PetriNetUnfolderBase]: 4068/6896 cut-off events. [2023-08-26 09:07:14,455 INFO L125 PetriNetUnfolderBase]: For 6923/7386 co-relation queries the response was YES. [2023-08-26 09:07:14,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19680 conditions, 6896 events. 4068/6896 cut-off events. For 6923/7386 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 49091 event pairs, 658 based on Foata normal form. 68/6487 useless extension candidates. Maximal degree in co-relation 19667. Up to 1690 conditions per place. [2023-08-26 09:07:14,501 INFO L140 encePairwiseOnDemand]: 368/376 looper letters, 108 selfloop transitions, 36 changer transitions 0/159 dead transitions. [2023-08-26 09:07:14,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 159 transitions, 1002 flow [2023-08-26 09:07:14,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-26 09:07:14,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-26 09:07:14,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1612 transitions. [2023-08-26 09:07:14,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47635933806146574 [2023-08-26 09:07:14,504 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1612 transitions. [2023-08-26 09:07:14,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1612 transitions. [2023-08-26 09:07:14,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:07:14,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1612 transitions. [2023-08-26 09:07:14,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 179.11111111111111) internal successors, (1612), 9 states have internal predecessors, (1612), 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) [2023-08-26 09:07:14,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 376.0) internal successors, (3760), 10 states have internal predecessors, (3760), 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) [2023-08-26 09:07:14,510 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 376.0) internal successors, (3760), 10 states have internal predecessors, (3760), 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) [2023-08-26 09:07:14,510 INFO L175 Difference]: Start difference. First operand has 57 places, 54 transitions, 250 flow. Second operand 9 states and 1612 transitions. [2023-08-26 09:07:14,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 159 transitions, 1002 flow [2023-08-26 09:07:14,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 159 transitions, 991 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 09:07:14,518 INFO L231 Difference]: Finished difference. Result has 72 places, 84 transitions, 569 flow [2023-08-26 09:07:14,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=569, PETRI_PLACES=72, PETRI_TRANSITIONS=84} [2023-08-26 09:07:14,518 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 10 predicate places. [2023-08-26 09:07:14,519 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 84 transitions, 569 flow [2023-08-26 09:07:14,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 170.33333333333334) internal successors, (1022), 6 states have internal predecessors, (1022), 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) [2023-08-26 09:07:14,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:07:14,519 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:07:14,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-26 09:07:14,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:07:14,725 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2023-08-26 09:07:14,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:07:14,725 INFO L85 PathProgramCache]: Analyzing trace with hash -100708862, now seen corresponding path program 3 times [2023-08-26 09:07:14,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:07:14,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785835320] [2023-08-26 09:07:14,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:07:14,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:07:14,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:07:14,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:07:14,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:07:14,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785835320] [2023-08-26 09:07:14,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785835320] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:07:14,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:07:14,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-26 09:07:14,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152053611] [2023-08-26 09:07:14,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:07:14,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 09:07:14,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:07:14,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 09:07:14,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-26 09:07:14,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 376 [2023-08-26 09:07:14,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 84 transitions, 569 flow. Second operand has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 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) [2023-08-26 09:07:14,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:07:14,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 376 [2023-08-26 09:07:14,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:07:15,739 INFO L124 PetriNetUnfolderBase]: 5912/9501 cut-off events. [2023-08-26 09:07:15,739 INFO L125 PetriNetUnfolderBase]: For 35825/36644 co-relation queries the response was YES. [2023-08-26 09:07:15,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36140 conditions, 9501 events. 5912/9501 cut-off events. For 35825/36644 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 65229 event pairs, 1952 based on Foata normal form. 91/8794 useless extension candidates. Maximal degree in co-relation 36120. Up to 4477 conditions per place. [2023-08-26 09:07:15,799 INFO L140 encePairwiseOnDemand]: 366/376 looper letters, 127 selfloop transitions, 34 changer transitions 1/175 dead transitions. [2023-08-26 09:07:15,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 175 transitions, 1529 flow [2023-08-26 09:07:15,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 09:07:15,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 09:07:15,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1225 transitions. [2023-08-26 09:07:15,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4654255319148936 [2023-08-26 09:07:15,802 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1225 transitions. [2023-08-26 09:07:15,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1225 transitions. [2023-08-26 09:07:15,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:07:15,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1225 transitions. [2023-08-26 09:07:15,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 175.0) internal successors, (1225), 7 states have internal predecessors, (1225), 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) [2023-08-26 09:07:15,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 376.0) internal successors, (3008), 8 states have internal predecessors, (3008), 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) [2023-08-26 09:07:15,807 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 376.0) internal successors, (3008), 8 states have internal predecessors, (3008), 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) [2023-08-26 09:07:15,807 INFO L175 Difference]: Start difference. First operand has 72 places, 84 transitions, 569 flow. Second operand 7 states and 1225 transitions. [2023-08-26 09:07:15,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 175 transitions, 1529 flow [2023-08-26 09:07:15,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 175 transitions, 1529 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 09:07:15,843 INFO L231 Difference]: Finished difference. Result has 83 places, 108 transitions, 910 flow [2023-08-26 09:07:15,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=910, PETRI_PLACES=83, PETRI_TRANSITIONS=108} [2023-08-26 09:07:15,843 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 21 predicate places. [2023-08-26 09:07:15,843 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 108 transitions, 910 flow [2023-08-26 09:07:15,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 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) [2023-08-26 09:07:15,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:07:15,844 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:07:15,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 09:07:15,844 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2023-08-26 09:07:15,844 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:07:15,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1268717580, now seen corresponding path program 4 times [2023-08-26 09:07:15,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:07:15,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188573771] [2023-08-26 09:07:15,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:07:15,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:07:15,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:07:15,984 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:07:15,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:07:15,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188573771] [2023-08-26 09:07:15,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188573771] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:07:15,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:07:15,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-26 09:07:15,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502484260] [2023-08-26 09:07:15,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:07:15,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 09:07:15,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:07:15,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 09:07:15,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-26 09:07:15,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 376 [2023-08-26 09:07:15,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 108 transitions, 910 flow. Second operand has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 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) [2023-08-26 09:07:15,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:07:15,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 376 [2023-08-26 09:07:15,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:07:16,970 INFO L124 PetriNetUnfolderBase]: 6384/10573 cut-off events. [2023-08-26 09:07:16,971 INFO L125 PetriNetUnfolderBase]: For 55936/56831 co-relation queries the response was YES. [2023-08-26 09:07:17,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44381 conditions, 10573 events. 6384/10573 cut-off events. For 55936/56831 co-relation queries the response was YES. Maximal size of possible extension queue 599. Compared 76549 event pairs, 1993 based on Foata normal form. 78/9792 useless extension candidates. Maximal degree in co-relation 44355. Up to 5027 conditions per place. [2023-08-26 09:07:17,036 INFO L140 encePairwiseOnDemand]: 366/376 looper letters, 144 selfloop transitions, 44 changer transitions 1/202 dead transitions. [2023-08-26 09:07:17,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 202 transitions, 2036 flow [2023-08-26 09:07:17,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 09:07:17,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 09:07:17,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1225 transitions. [2023-08-26 09:07:17,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4654255319148936 [2023-08-26 09:07:17,039 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1225 transitions. [2023-08-26 09:07:17,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1225 transitions. [2023-08-26 09:07:17,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:07:17,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1225 transitions. [2023-08-26 09:07:17,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 175.0) internal successors, (1225), 7 states have internal predecessors, (1225), 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) [2023-08-26 09:07:17,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 376.0) internal successors, (3008), 8 states have internal predecessors, (3008), 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) [2023-08-26 09:07:17,044 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 376.0) internal successors, (3008), 8 states have internal predecessors, (3008), 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) [2023-08-26 09:07:17,044 INFO L175 Difference]: Start difference. First operand has 83 places, 108 transitions, 910 flow. Second operand 7 states and 1225 transitions. [2023-08-26 09:07:17,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 202 transitions, 2036 flow [2023-08-26 09:07:17,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 202 transitions, 1967 flow, removed 22 selfloop flow, removed 1 redundant places. [2023-08-26 09:07:17,105 INFO L231 Difference]: Finished difference. Result has 93 places, 131 transitions, 1272 flow [2023-08-26 09:07:17,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=848, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1272, PETRI_PLACES=93, PETRI_TRANSITIONS=131} [2023-08-26 09:07:17,106 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 31 predicate places. [2023-08-26 09:07:17,107 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 131 transitions, 1272 flow [2023-08-26 09:07:17,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 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) [2023-08-26 09:07:17,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:07:17,108 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:07:17,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 09:07:17,108 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2023-08-26 09:07:17,108 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:07:17,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1303714032, now seen corresponding path program 1 times [2023-08-26 09:07:17,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:07:17,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957538417] [2023-08-26 09:07:17,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:07:17,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:07:17,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:07:17,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:07:17,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:07:17,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957538417] [2023-08-26 09:07:17,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957538417] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:07:17,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108612047] [2023-08-26 09:07:17,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:07:17,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:07:17,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:07:17,281 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:07:17,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-26 09:07:17,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:07:17,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-26 09:07:17,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:07:17,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:07:17,552 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:07:17,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:07:17,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108612047] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-26 09:07:17,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-26 09:07:17,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 7] total 13 [2023-08-26 09:07:17,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987259762] [2023-08-26 09:07:17,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:07:17,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 09:07:17,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:07:17,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 09:07:17,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-08-26 09:07:17,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 376 [2023-08-26 09:07:17,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 131 transitions, 1272 flow. Second operand has 6 states, 6 states have (on average 170.5) internal successors, (1023), 6 states have internal predecessors, (1023), 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) [2023-08-26 09:07:17,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:07:17,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 376 [2023-08-26 09:07:17,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:07:19,014 INFO L124 PetriNetUnfolderBase]: 8457/13921 cut-off events. [2023-08-26 09:07:19,014 INFO L125 PetriNetUnfolderBase]: For 91992/93343 co-relation queries the response was YES. [2023-08-26 09:07:19,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63085 conditions, 13921 events. 8457/13921 cut-off events. For 91992/93343 co-relation queries the response was YES. Maximal size of possible extension queue 818. Compared 105081 event pairs, 1221 based on Foata normal form. 181/12792 useless extension candidates. Maximal degree in co-relation 63053. Up to 3595 conditions per place. [2023-08-26 09:07:19,109 INFO L140 encePairwiseOnDemand]: 368/376 looper letters, 309 selfloop transitions, 58 changer transitions 0/384 dead transitions. [2023-08-26 09:07:19,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 384 transitions, 4410 flow [2023-08-26 09:07:19,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-26 09:07:19,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-26 09:07:19,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1627 transitions. [2023-08-26 09:07:19,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4807919621749409 [2023-08-26 09:07:19,112 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1627 transitions. [2023-08-26 09:07:19,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1627 transitions. [2023-08-26 09:07:19,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:07:19,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1627 transitions. [2023-08-26 09:07:19,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 180.77777777777777) internal successors, (1627), 9 states have internal predecessors, (1627), 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) [2023-08-26 09:07:19,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 376.0) internal successors, (3760), 10 states have internal predecessors, (3760), 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) [2023-08-26 09:07:19,118 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 376.0) internal successors, (3760), 10 states have internal predecessors, (3760), 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) [2023-08-26 09:07:19,118 INFO L175 Difference]: Start difference. First operand has 93 places, 131 transitions, 1272 flow. Second operand 9 states and 1627 transitions. [2023-08-26 09:07:19,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 384 transitions, 4410 flow [2023-08-26 09:07:19,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 384 transitions, 4274 flow, removed 68 selfloop flow, removed 0 redundant places. [2023-08-26 09:07:19,261 INFO L231 Difference]: Finished difference. Result has 108 places, 170 transitions, 1866 flow [2023-08-26 09:07:19,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=1196, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1866, PETRI_PLACES=108, PETRI_TRANSITIONS=170} [2023-08-26 09:07:19,261 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 46 predicate places. [2023-08-26 09:07:19,261 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 170 transitions, 1866 flow [2023-08-26 09:07:19,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 170.5) internal successors, (1023), 6 states have internal predecessors, (1023), 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) [2023-08-26 09:07:19,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:07:19,262 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:07:19,268 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-26 09:07:19,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-26 09:07:19,466 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2023-08-26 09:07:19,466 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:07:19,466 INFO L85 PathProgramCache]: Analyzing trace with hash 595730324, now seen corresponding path program 2 times [2023-08-26 09:07:19,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:07:19,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799945392] [2023-08-26 09:07:19,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:07:19,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:07:19,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:07:19,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:07:19,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:07:19,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799945392] [2023-08-26 09:07:19,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799945392] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:07:19,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:07:19,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-26 09:07:19,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654355796] [2023-08-26 09:07:19,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:07:19,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 09:07:19,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:07:19,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 09:07:19,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-26 09:07:19,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 376 [2023-08-26 09:07:19,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 170 transitions, 1866 flow. Second operand has 7 states, 7 states have (on average 166.14285714285714) internal successors, (1163), 7 states have internal predecessors, (1163), 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) [2023-08-26 09:07:19,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:07:19,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 376 [2023-08-26 09:07:19,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:07:21,104 INFO L124 PetriNetUnfolderBase]: 8739/14158 cut-off events. [2023-08-26 09:07:21,104 INFO L125 PetriNetUnfolderBase]: For 150147/152845 co-relation queries the response was YES. [2023-08-26 09:07:21,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73493 conditions, 14158 events. 8739/14158 cut-off events. For 150147/152845 co-relation queries the response was YES. Maximal size of possible extension queue 853. Compared 105825 event pairs, 2346 based on Foata normal form. 234/12984 useless extension candidates. Maximal degree in co-relation 73454. Up to 5597 conditions per place. [2023-08-26 09:07:21,210 INFO L140 encePairwiseOnDemand]: 366/376 looper letters, 222 selfloop transitions, 54 changer transitions 1/290 dead transitions. [2023-08-26 09:07:21,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 290 transitions, 3728 flow [2023-08-26 09:07:21,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 09:07:21,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 09:07:21,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1226 transitions. [2023-08-26 09:07:21,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46580547112462006 [2023-08-26 09:07:21,214 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1226 transitions. [2023-08-26 09:07:21,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1226 transitions. [2023-08-26 09:07:21,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:07:21,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1226 transitions. [2023-08-26 09:07:21,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 175.14285714285714) internal successors, (1226), 7 states have internal predecessors, (1226), 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) [2023-08-26 09:07:21,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 376.0) internal successors, (3008), 8 states have internal predecessors, (3008), 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) [2023-08-26 09:07:21,219 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 376.0) internal successors, (3008), 8 states have internal predecessors, (3008), 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) [2023-08-26 09:07:21,219 INFO L175 Difference]: Start difference. First operand has 108 places, 170 transitions, 1866 flow. Second operand 7 states and 1226 transitions. [2023-08-26 09:07:21,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 290 transitions, 3728 flow [2023-08-26 09:07:21,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 290 transitions, 3494 flow, removed 117 selfloop flow, removed 0 redundant places. [2023-08-26 09:07:21,854 INFO L231 Difference]: Finished difference. Result has 118 places, 185 transitions, 2153 flow [2023-08-26 09:07:21,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=1758, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2153, PETRI_PLACES=118, PETRI_TRANSITIONS=185} [2023-08-26 09:07:21,854 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 56 predicate places. [2023-08-26 09:07:21,854 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 185 transitions, 2153 flow [2023-08-26 09:07:21,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 166.14285714285714) internal successors, (1163), 7 states have internal predecessors, (1163), 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) [2023-08-26 09:07:21,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:07:21,855 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:07:21,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 09:07:21,855 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2023-08-26 09:07:21,855 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:07:21,855 INFO L85 PathProgramCache]: Analyzing trace with hash -2042910758, now seen corresponding path program 5 times [2023-08-26 09:07:21,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:07:21,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59895289] [2023-08-26 09:07:21,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:07:21,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:07:21,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:07:22,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:07:22,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:07:22,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59895289] [2023-08-26 09:07:22,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59895289] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:07:22,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:07:22,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-26 09:07:22,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462304959] [2023-08-26 09:07:22,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:07:22,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-26 09:07:22,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:07:22,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-26 09:07:22,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-08-26 09:07:22,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 376 [2023-08-26 09:07:22,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 185 transitions, 2153 flow. Second operand has 8 states, 8 states have (on average 165.625) internal successors, (1325), 8 states have internal predecessors, (1325), 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) [2023-08-26 09:07:22,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:07:22,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 376 [2023-08-26 09:07:22,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:07:24,128 INFO L124 PetriNetUnfolderBase]: 12807/20591 cut-off events. [2023-08-26 09:07:24,129 INFO L125 PetriNetUnfolderBase]: For 219020/221872 co-relation queries the response was YES. [2023-08-26 09:07:24,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106150 conditions, 20591 events. 12807/20591 cut-off events. For 219020/221872 co-relation queries the response was YES. Maximal size of possible extension queue 1023. Compared 157484 event pairs, 2788 based on Foata normal form. 317/19103 useless extension candidates. Maximal degree in co-relation 106106. Up to 7861 conditions per place. [2023-08-26 09:07:24,350 INFO L140 encePairwiseOnDemand]: 366/376 looper letters, 257 selfloop transitions, 152 changer transitions 0/422 dead transitions. [2023-08-26 09:07:24,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 422 transitions, 5631 flow [2023-08-26 09:07:24,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-26 09:07:24,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-26 09:07:24,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1579 transitions. [2023-08-26 09:07:24,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666075650118203 [2023-08-26 09:07:24,354 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1579 transitions. [2023-08-26 09:07:24,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1579 transitions. [2023-08-26 09:07:24,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:07:24,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1579 transitions. [2023-08-26 09:07:24,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 175.44444444444446) internal successors, (1579), 9 states have internal predecessors, (1579), 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) [2023-08-26 09:07:24,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 376.0) internal successors, (3760), 10 states have internal predecessors, (3760), 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) [2023-08-26 09:07:24,360 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 376.0) internal successors, (3760), 10 states have internal predecessors, (3760), 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) [2023-08-26 09:07:24,361 INFO L175 Difference]: Start difference. First operand has 118 places, 185 transitions, 2153 flow. Second operand 9 states and 1579 transitions. [2023-08-26 09:07:24,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 422 transitions, 5631 flow [2023-08-26 09:07:25,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 422 transitions, 5459 flow, removed 46 selfloop flow, removed 1 redundant places. [2023-08-26 09:07:25,076 INFO L231 Difference]: Finished difference. Result has 132 places, 273 transitions, 3825 flow [2023-08-26 09:07:25,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=2029, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3825, PETRI_PLACES=132, PETRI_TRANSITIONS=273} [2023-08-26 09:07:25,077 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 70 predicate places. [2023-08-26 09:07:25,077 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 273 transitions, 3825 flow [2023-08-26 09:07:25,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 165.625) internal successors, (1325), 8 states have internal predecessors, (1325), 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) [2023-08-26 09:07:25,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:07:25,078 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:07:25,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 09:07:25,078 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2023-08-26 09:07:25,078 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:07:25,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1646230868, now seen corresponding path program 3 times [2023-08-26 09:07:25,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:07:25,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612093613] [2023-08-26 09:07:25,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:07:25,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:07:25,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:07:25,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:07:25,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:07:25,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612093613] [2023-08-26 09:07:25,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612093613] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:07:25,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:07:25,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-26 09:07:25,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898532546] [2023-08-26 09:07:25,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:07:25,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-26 09:07:25,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:07:25,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-26 09:07:25,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-26 09:07:25,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 376 [2023-08-26 09:07:25,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 273 transitions, 3825 flow. Second operand has 8 states, 8 states have (on average 165.75) internal successors, (1326), 8 states have internal predecessors, (1326), 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) [2023-08-26 09:07:25,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:07:25,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 376 [2023-08-26 09:07:25,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:07:28,761 INFO L124 PetriNetUnfolderBase]: 14399/24364 cut-off events. [2023-08-26 09:07:28,761 INFO L125 PetriNetUnfolderBase]: For 318730/323789 co-relation queries the response was YES. [2023-08-26 09:07:28,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135162 conditions, 24364 events. 14399/24364 cut-off events. For 318730/323789 co-relation queries the response was YES. Maximal size of possible extension queue 1216. Compared 200084 event pairs, 1342 based on Foata normal form. 734/23420 useless extension candidates. Maximal degree in co-relation 135110. Up to 4942 conditions per place. [2023-08-26 09:07:28,979 INFO L140 encePairwiseOnDemand]: 365/376 looper letters, 514 selfloop transitions, 159 changer transitions 0/686 dead transitions. [2023-08-26 09:07:28,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 686 transitions, 10646 flow [2023-08-26 09:07:28,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-26 09:07:28,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-26 09:07:28,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2641 transitions. [2023-08-26 09:07:28,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4682624113475177 [2023-08-26 09:07:28,984 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2641 transitions. [2023-08-26 09:07:28,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2641 transitions. [2023-08-26 09:07:28,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:07:28,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2641 transitions. [2023-08-26 09:07:28,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 176.06666666666666) internal successors, (2641), 15 states have internal predecessors, (2641), 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) [2023-08-26 09:07:28,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 376.0) internal successors, (6016), 16 states have internal predecessors, (6016), 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) [2023-08-26 09:07:28,994 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 376.0) internal successors, (6016), 16 states have internal predecessors, (6016), 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) [2023-08-26 09:07:28,994 INFO L175 Difference]: Start difference. First operand has 132 places, 273 transitions, 3825 flow. Second operand 15 states and 2641 transitions. [2023-08-26 09:07:28,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 686 transitions, 10646 flow [2023-08-26 09:07:30,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 686 transitions, 10032 flow, removed 307 selfloop flow, removed 0 redundant places. [2023-08-26 09:07:30,573 INFO L231 Difference]: Finished difference. Result has 158 places, 363 transitions, 5689 flow [2023-08-26 09:07:30,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=3619, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=5689, PETRI_PLACES=158, PETRI_TRANSITIONS=363} [2023-08-26 09:07:30,574 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 96 predicate places. [2023-08-26 09:07:30,574 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 363 transitions, 5689 flow [2023-08-26 09:07:30,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 165.75) internal successors, (1326), 8 states have internal predecessors, (1326), 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) [2023-08-26 09:07:30,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:07:30,574 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:07:30,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-26 09:07:30,575 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2023-08-26 09:07:30,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:07:30,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1221351824, now seen corresponding path program 4 times [2023-08-26 09:07:30,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:07:30,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122976798] [2023-08-26 09:07:30,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:07:30,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:07:30,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:07:30,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:07:30,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:07:30,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122976798] [2023-08-26 09:07:30,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122976798] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:07:30,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:07:30,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-26 09:07:30,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969669306] [2023-08-26 09:07:30,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:07:30,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 09:07:30,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:07:30,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 09:07:30,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-26 09:07:30,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 376 [2023-08-26 09:07:30,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 363 transitions, 5689 flow. Second operand has 7 states, 7 states have (on average 166.14285714285714) internal successors, (1163), 7 states have internal predecessors, (1163), 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) [2023-08-26 09:07:30,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:07:30,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 376 [2023-08-26 09:07:30,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:07:33,774 INFO L124 PetriNetUnfolderBase]: 14978/24177 cut-off events. [2023-08-26 09:07:33,774 INFO L125 PetriNetUnfolderBase]: For 340384/349248 co-relation queries the response was YES. [2023-08-26 09:07:34,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142900 conditions, 24177 events. 14978/24177 cut-off events. For 340384/349248 co-relation queries the response was YES. Maximal size of possible extension queue 1246. Compared 190762 event pairs, 4691 based on Foata normal form. 682/22443 useless extension candidates. Maximal degree in co-relation 142836. Up to 12615 conditions per place. [2023-08-26 09:07:34,197 INFO L140 encePairwiseOnDemand]: 366/376 looper letters, 367 selfloop transitions, 139 changer transitions 1/520 dead transitions. [2023-08-26 09:07:34,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 520 transitions, 8980 flow [2023-08-26 09:07:34,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 09:07:34,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 09:07:34,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1222 transitions. [2023-08-26 09:07:34,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2023-08-26 09:07:34,200 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1222 transitions. [2023-08-26 09:07:34,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1222 transitions. [2023-08-26 09:07:34,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:07:34,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1222 transitions. [2023-08-26 09:07:34,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 174.57142857142858) internal successors, (1222), 7 states have internal predecessors, (1222), 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) [2023-08-26 09:07:34,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 376.0) internal successors, (3008), 8 states have internal predecessors, (3008), 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) [2023-08-26 09:07:34,205 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 376.0) internal successors, (3008), 8 states have internal predecessors, (3008), 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) [2023-08-26 09:07:34,205 INFO L175 Difference]: Start difference. First operand has 158 places, 363 transitions, 5689 flow. Second operand 7 states and 1222 transitions. [2023-08-26 09:07:34,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 520 transitions, 8980 flow [2023-08-26 09:07:35,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 520 transitions, 8838 flow, removed 71 selfloop flow, removed 0 redundant places. [2023-08-26 09:07:35,186 INFO L231 Difference]: Finished difference. Result has 167 places, 380 transitions, 6264 flow [2023-08-26 09:07:35,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=5563, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6264, PETRI_PLACES=167, PETRI_TRANSITIONS=380} [2023-08-26 09:07:35,186 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 105 predicate places. [2023-08-26 09:07:35,186 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 380 transitions, 6264 flow [2023-08-26 09:07:35,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 166.14285714285714) internal successors, (1163), 7 states have internal predecessors, (1163), 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) [2023-08-26 09:07:35,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:07:35,187 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:07:35,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-26 09:07:35,187 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2023-08-26 09:07:35,187 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:07:35,187 INFO L85 PathProgramCache]: Analyzing trace with hash -642904836, now seen corresponding path program 6 times [2023-08-26 09:07:35,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:07:35,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762083048] [2023-08-26 09:07:35,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:07:35,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:07:35,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:07:35,325 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:07:35,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:07:35,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762083048] [2023-08-26 09:07:35,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762083048] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:07:35,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672161520] [2023-08-26 09:07:35,325 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 09:07:35,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:07:35,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:07:35,326 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:07:35,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-26 09:07:35,463 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-26 09:07:35,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:07:35,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-26 09:07:35,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:07:35,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:07:35,566 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:07:35,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:07:35,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672161520] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-26 09:07:35,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-26 09:07:35,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 7] total 12 [2023-08-26 09:07:35,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010076575] [2023-08-26 09:07:35,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:07:35,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 09:07:35,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:07:35,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 09:07:35,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-08-26 09:07:35,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 376 [2023-08-26 09:07:35,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 380 transitions, 6264 flow. Second operand has 6 states, 6 states have (on average 170.33333333333334) internal successors, (1022), 6 states have internal predecessors, (1022), 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) [2023-08-26 09:07:35,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:07:35,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 376 [2023-08-26 09:07:35,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:07:39,655 INFO L124 PetriNetUnfolderBase]: 16072/27252 cut-off events. [2023-08-26 09:07:39,656 INFO L125 PetriNetUnfolderBase]: For 365109/371958 co-relation queries the response was YES. [2023-08-26 09:07:39,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156401 conditions, 27252 events. 16072/27252 cut-off events. For 365109/371958 co-relation queries the response was YES. Maximal size of possible extension queue 1401. Compared 229143 event pairs, 1962 based on Foata normal form. 870/26102 useless extension candidates. Maximal degree in co-relation 156333. Up to 5512 conditions per place. [2023-08-26 09:07:39,985 INFO L140 encePairwiseOnDemand]: 368/376 looper letters, 411 selfloop transitions, 199 changer transitions 0/641 dead transitions. [2023-08-26 09:07:39,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 641 transitions, 10853 flow [2023-08-26 09:07:39,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-26 09:07:39,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-26 09:07:39,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1810 transitions. [2023-08-26 09:07:39,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48138297872340424 [2023-08-26 09:07:39,989 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1810 transitions. [2023-08-26 09:07:39,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1810 transitions. [2023-08-26 09:07:39,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:07:39,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1810 transitions. [2023-08-26 09:07:39,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 181.0) internal successors, (1810), 10 states have internal predecessors, (1810), 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) [2023-08-26 09:07:39,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 376.0) internal successors, (4136), 11 states have internal predecessors, (4136), 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) [2023-08-26 09:07:39,995 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 376.0) internal successors, (4136), 11 states have internal predecessors, (4136), 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) [2023-08-26 09:07:39,995 INFO L175 Difference]: Start difference. First operand has 167 places, 380 transitions, 6264 flow. Second operand 10 states and 1810 transitions. [2023-08-26 09:07:39,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 641 transitions, 10853 flow [2023-08-26 09:07:41,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 641 transitions, 10466 flow, removed 86 selfloop flow, removed 2 redundant places. [2023-08-26 09:07:41,324 INFO L231 Difference]: Finished difference. Result has 180 places, 450 transitions, 7789 flow [2023-08-26 09:07:41,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=5958, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7789, PETRI_PLACES=180, PETRI_TRANSITIONS=450} [2023-08-26 09:07:41,324 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 118 predicate places. [2023-08-26 09:07:41,324 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 450 transitions, 7789 flow [2023-08-26 09:07:41,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 170.33333333333334) internal successors, (1022), 6 states have internal predecessors, (1022), 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) [2023-08-26 09:07:41,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:07:41,325 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:07:41,329 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-26 09:07:41,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:07:41,529 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2023-08-26 09:07:41,529 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:07:41,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1213759802, now seen corresponding path program 7 times [2023-08-26 09:07:41,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:07:41,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895325817] [2023-08-26 09:07:41,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:07:41,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:07:41,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:07:41,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:07:41,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:07:41,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895325817] [2023-08-26 09:07:41,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895325817] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:07:41,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:07:41,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-26 09:07:41,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040163506] [2023-08-26 09:07:41,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:07:41,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 09:07:41,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:07:41,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 09:07:41,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-26 09:07:41,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 376 [2023-08-26 09:07:41,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 450 transitions, 7789 flow. Second operand has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 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) [2023-08-26 09:07:41,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:07:41,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 376 [2023-08-26 09:07:41,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:07:45,668 INFO L124 PetriNetUnfolderBase]: 16662/27073 cut-off events. [2023-08-26 09:07:45,668 INFO L125 PetriNetUnfolderBase]: For 449395/459622 co-relation queries the response was YES. [2023-08-26 09:07:46,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168861 conditions, 27073 events. 16662/27073 cut-off events. For 449395/459622 co-relation queries the response was YES. Maximal size of possible extension queue 1343. Compared 218951 event pairs, 4935 based on Foata normal form. 731/25406 useless extension candidates. Maximal degree in co-relation 168787. Up to 10257 conditions per place. [2023-08-26 09:07:46,148 INFO L140 encePairwiseOnDemand]: 366/376 looper letters, 440 selfloop transitions, 144 changer transitions 1/598 dead transitions. [2023-08-26 09:07:46,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 598 transitions, 11067 flow [2023-08-26 09:07:46,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 09:07:46,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 09:07:46,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1230 transitions. [2023-08-26 09:07:46,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4673252279635258 [2023-08-26 09:07:46,150 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1230 transitions. [2023-08-26 09:07:46,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1230 transitions. [2023-08-26 09:07:46,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:07:46,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1230 transitions. [2023-08-26 09:07:46,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 175.71428571428572) internal successors, (1230), 7 states have internal predecessors, (1230), 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) [2023-08-26 09:07:46,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 376.0) internal successors, (3008), 8 states have internal predecessors, (3008), 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) [2023-08-26 09:07:46,154 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 376.0) internal successors, (3008), 8 states have internal predecessors, (3008), 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) [2023-08-26 09:07:46,154 INFO L175 Difference]: Start difference. First operand has 180 places, 450 transitions, 7789 flow. Second operand 7 states and 1230 transitions. [2023-08-26 09:07:46,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 598 transitions, 11067 flow [2023-08-26 09:07:48,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 598 transitions, 10883 flow, removed 75 selfloop flow, removed 1 redundant places. [2023-08-26 09:07:48,179 INFO L231 Difference]: Finished difference. Result has 188 places, 458 transitions, 8156 flow [2023-08-26 09:07:48,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=7661, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8156, PETRI_PLACES=188, PETRI_TRANSITIONS=458} [2023-08-26 09:07:48,180 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 126 predicate places. [2023-08-26 09:07:48,180 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 458 transitions, 8156 flow [2023-08-26 09:07:48,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 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) [2023-08-26 09:07:48,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:07:48,180 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:07:48,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-26 09:07:48,180 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2023-08-26 09:07:48,180 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:07:48,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1182053850, now seen corresponding path program 8 times [2023-08-26 09:07:48,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:07:48,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578121] [2023-08-26 09:07:48,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:07:48,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:07:48,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:07:48,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:07:48,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:07:48,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578121] [2023-08-26 09:07:48,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578121] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:07:48,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960594982] [2023-08-26 09:07:48,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 09:07:48,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:07:48,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:07:48,325 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:07:48,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-26 09:07:48,470 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 09:07:48,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:07:48,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-26 09:07:48,473 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:07:48,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:07:48,694 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:07:48,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:07:48,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960594982] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:07:48,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:07:48,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 23 [2023-08-26 09:07:48,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123211348] [2023-08-26 09:07:48,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:07:48,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-26 09:07:48,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:07:48,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-26 09:07:48,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2023-08-26 09:07:48,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 376 [2023-08-26 09:07:48,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 458 transitions, 8156 flow. Second operand has 23 states, 23 states have (on average 161.91304347826087) internal successors, (3724), 23 states have internal predecessors, (3724), 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) [2023-08-26 09:07:48,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:07:48,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 376 [2023-08-26 09:07:48,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:07:56,607 INFO L124 PetriNetUnfolderBase]: 24082/40274 cut-off events. [2023-08-26 09:07:56,607 INFO L125 PetriNetUnfolderBase]: For 626446/636924 co-relation queries the response was YES. [2023-08-26 09:07:57,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240583 conditions, 40274 events. 24082/40274 cut-off events. For 626446/636924 co-relation queries the response was YES. Maximal size of possible extension queue 2056. Compared 350618 event pairs, 2807 based on Foata normal form. 2608/40642 useless extension candidates. Maximal degree in co-relation 240506. Up to 8197 conditions per place. [2023-08-26 09:07:57,243 INFO L140 encePairwiseOnDemand]: 363/376 looper letters, 655 selfloop transitions, 871 changer transitions 3/1542 dead transitions. [2023-08-26 09:07:57,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 1542 transitions, 27649 flow [2023-08-26 09:07:57,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-08-26 09:07:57,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2023-08-26 09:07:57,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 8679 transitions. [2023-08-26 09:07:57,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45259699624530664 [2023-08-26 09:07:57,251 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 8679 transitions. [2023-08-26 09:07:57,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 8679 transitions. [2023-08-26 09:07:57,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:07:57,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 8679 transitions. [2023-08-26 09:07:57,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 170.1764705882353) internal successors, (8679), 51 states have internal predecessors, (8679), 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) [2023-08-26 09:07:57,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 376.0) internal successors, (19552), 52 states have internal predecessors, (19552), 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) [2023-08-26 09:07:57,277 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 376.0) internal successors, (19552), 52 states have internal predecessors, (19552), 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) [2023-08-26 09:07:57,277 INFO L175 Difference]: Start difference. First operand has 188 places, 458 transitions, 8156 flow. Second operand 51 states and 8679 transitions. [2023-08-26 09:07:57,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 1542 transitions, 27649 flow [2023-08-26 09:08:00,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 1542 transitions, 27121 flow, removed 37 selfloop flow, removed 3 redundant places. [2023-08-26 09:08:00,433 INFO L231 Difference]: Finished difference. Result has 266 places, 1111 transitions, 22745 flow [2023-08-26 09:08:00,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=7819, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=311, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=22745, PETRI_PLACES=266, PETRI_TRANSITIONS=1111} [2023-08-26 09:08:00,433 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 204 predicate places. [2023-08-26 09:08:00,433 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 1111 transitions, 22745 flow [2023-08-26 09:08:00,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 161.91304347826087) internal successors, (3724), 23 states have internal predecessors, (3724), 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) [2023-08-26 09:08:00,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:08:00,434 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:08:00,440 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-26 09:08:00,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-26 09:08:00,638 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2023-08-26 09:08:00,639 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:08:00,639 INFO L85 PathProgramCache]: Analyzing trace with hash 176568534, now seen corresponding path program 9 times [2023-08-26 09:08:00,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:08:00,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764768056] [2023-08-26 09:08:00,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:08:00,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:08:00,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:08:00,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:08:00,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:08:00,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764768056] [2023-08-26 09:08:00,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764768056] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:08:00,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006515305] [2023-08-26 09:08:00,776 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 09:08:00,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:08:00,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:08:00,784 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:08:00,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-26 09:08:00,943 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-26 09:08:00,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:08:00,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-26 09:08:00,946 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:08:01,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:08:01,029 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:08:08,261 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:08:08,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006515305] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:08:08,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:08:08,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2023-08-26 09:08:08,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048952236] [2023-08-26 09:08:08,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:08:08,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-26 09:08:08,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:08:08,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-26 09:08:08,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-08-26 09:08:08,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 376 [2023-08-26 09:08:08,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 1111 transitions, 22745 flow. Second operand has 14 states, 14 states have (on average 165.85714285714286) internal successors, (2322), 14 states have internal predecessors, (2322), 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) [2023-08-26 09:08:08,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:08:08,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 376 [2023-08-26 09:08:08,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:08:19,137 INFO L124 PetriNetUnfolderBase]: 27142/45874 cut-off events. [2023-08-26 09:08:19,137 INFO L125 PetriNetUnfolderBase]: For 1027641/1044185 co-relation queries the response was YES. [2023-08-26 09:08:19,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310420 conditions, 45874 events. 27142/45874 cut-off events. For 1027641/1044185 co-relation queries the response was YES. Maximal size of possible extension queue 2406. Compared 411911 event pairs, 3352 based on Foata normal form. 2110/45001 useless extension candidates. Maximal degree in co-relation 310313. Up to 9212 conditions per place. [2023-08-26 09:08:20,281 INFO L140 encePairwiseOnDemand]: 365/376 looper letters, 975 selfloop transitions, 737 changer transitions 0/1725 dead transitions. [2023-08-26 09:08:20,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 1725 transitions, 36465 flow [2023-08-26 09:08:20,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-26 09:08:20,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-26 09:08:20,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3316 transitions. [2023-08-26 09:08:20,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4641657334826428 [2023-08-26 09:08:20,284 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3316 transitions. [2023-08-26 09:08:20,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3316 transitions. [2023-08-26 09:08:20,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:08:20,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3316 transitions. [2023-08-26 09:08:20,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 174.52631578947367) internal successors, (3316), 19 states have internal predecessors, (3316), 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) [2023-08-26 09:08:20,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 376.0) internal successors, (7520), 20 states have internal predecessors, (7520), 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) [2023-08-26 09:08:20,290 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 376.0) internal successors, (7520), 20 states have internal predecessors, (7520), 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) [2023-08-26 09:08:20,290 INFO L175 Difference]: Start difference. First operand has 266 places, 1111 transitions, 22745 flow. Second operand 19 states and 3316 transitions. [2023-08-26 09:08:20,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 1725 transitions, 36465 flow [2023-08-26 09:08:30,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 1725 transitions, 32274 flow, removed 1675 selfloop flow, removed 4 redundant places. [2023-08-26 09:08:30,727 INFO L231 Difference]: Finished difference. Result has 286 places, 1308 transitions, 25574 flow [2023-08-26 09:08:30,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=19684, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=548, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=549, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=25574, PETRI_PLACES=286, PETRI_TRANSITIONS=1308} [2023-08-26 09:08:30,728 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 224 predicate places. [2023-08-26 09:08:30,728 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 1308 transitions, 25574 flow [2023-08-26 09:08:30,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 165.85714285714286) internal successors, (2322), 14 states have internal predecessors, (2322), 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) [2023-08-26 09:08:30,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:08:30,729 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:08:30,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-26 09:08:30,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-26 09:08:30,929 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2023-08-26 09:08:30,929 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:08:30,929 INFO L85 PathProgramCache]: Analyzing trace with hash -213047092, now seen corresponding path program 10 times [2023-08-26 09:08:30,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:08:30,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361945493] [2023-08-26 09:08:30,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:08:30,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:08:30,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:08:31,045 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:08:31,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:08:31,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361945493] [2023-08-26 09:08:31,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361945493] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:08:31,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:08:31,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-26 09:08:31,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037589929] [2023-08-26 09:08:31,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:08:31,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 09:08:31,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:08:31,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 09:08:31,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-26 09:08:31,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 376 [2023-08-26 09:08:31,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 1308 transitions, 25574 flow. Second operand has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 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) [2023-08-26 09:08:31,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:08:31,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 376 [2023-08-26 09:08:31,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:08:42,322 INFO L124 PetriNetUnfolderBase]: 27413/45726 cut-off events. [2023-08-26 09:08:42,322 INFO L125 PetriNetUnfolderBase]: For 1021532/1039835 co-relation queries the response was YES. [2023-08-26 09:08:43,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 311176 conditions, 45726 events. 27413/45726 cut-off events. For 1021532/1039835 co-relation queries the response was YES. Maximal size of possible extension queue 2356. Compared 406536 event pairs, 6358 based on Foata normal form. 1525/43971 useless extension candidates. Maximal degree in co-relation 311065. Up to 17479 conditions per place. [2023-08-26 09:08:43,372 INFO L140 encePairwiseOnDemand]: 366/376 looper letters, 1062 selfloop transitions, 352 changer transitions 1/1428 dead transitions. [2023-08-26 09:08:43,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 1428 transitions, 30419 flow [2023-08-26 09:08:43,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 09:08:43,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 09:08:43,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1230 transitions. [2023-08-26 09:08:43,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4673252279635258 [2023-08-26 09:08:43,374 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1230 transitions. [2023-08-26 09:08:43,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1230 transitions. [2023-08-26 09:08:43,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:08:43,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1230 transitions. [2023-08-26 09:08:43,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 175.71428571428572) internal successors, (1230), 7 states have internal predecessors, (1230), 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) [2023-08-26 09:08:43,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 376.0) internal successors, (3008), 8 states have internal predecessors, (3008), 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) [2023-08-26 09:08:43,377 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 376.0) internal successors, (3008), 8 states have internal predecessors, (3008), 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) [2023-08-26 09:08:43,377 INFO L175 Difference]: Start difference. First operand has 286 places, 1308 transitions, 25574 flow. Second operand 7 states and 1230 transitions. [2023-08-26 09:08:43,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 1428 transitions, 30419 flow [2023-08-26 09:08:56,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 1428 transitions, 29866 flow, removed 273 selfloop flow, removed 1 redundant places. [2023-08-26 09:08:56,926 INFO L231 Difference]: Finished difference. Result has 295 places, 1331 transitions, 26598 flow [2023-08-26 09:08:56,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=25069, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=329, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=956, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=26598, PETRI_PLACES=295, PETRI_TRANSITIONS=1331} [2023-08-26 09:08:56,927 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 233 predicate places. [2023-08-26 09:08:56,927 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 1331 transitions, 26598 flow [2023-08-26 09:08:56,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 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) [2023-08-26 09:08:56,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:08:56,928 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:08:56,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-26 09:08:56,928 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2023-08-26 09:08:56,928 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:08:56,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1278764344, now seen corresponding path program 5 times [2023-08-26 09:08:56,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:08:56,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49894706] [2023-08-26 09:08:56,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:08:56,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:08:56,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:08:57,048 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:08:57,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:08:57,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49894706] [2023-08-26 09:08:57,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49894706] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:08:57,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776966387] [2023-08-26 09:08:57,048 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 09:08:57,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:08:57,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:08:57,053 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:08:57,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-26 09:08:57,187 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 09:08:57,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:08:57,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-26 09:08:57,189 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:08:57,287 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:08:57,288 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:08:57,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:08:57,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776966387] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:08:57,449 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:08:57,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 18 [2023-08-26 09:08:57,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477589898] [2023-08-26 09:08:57,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:08:57,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-26 09:08:57,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:08:57,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-26 09:08:57,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2023-08-26 09:08:57,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 376 [2023-08-26 09:08:57,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 1331 transitions, 26598 flow. Second operand has 18 states, 18 states have (on average 164.94444444444446) internal successors, (2969), 18 states have internal predecessors, (2969), 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) [2023-08-26 09:08:57,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:08:57,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 376 [2023-08-26 09:08:57,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:09:13,230 INFO L124 PetriNetUnfolderBase]: 35735/58969 cut-off events. [2023-08-26 09:09:13,230 INFO L125 PetriNetUnfolderBase]: For 1307920/1326256 co-relation queries the response was YES. [2023-08-26 09:09:14,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 397852 conditions, 58969 events. 35735/58969 cut-off events. For 1307920/1326256 co-relation queries the response was YES. Maximal size of possible extension queue 2967. Compared 533480 event pairs, 5049 based on Foata normal form. 4648/59852 useless extension candidates. Maximal degree in co-relation 397737. Up to 10491 conditions per place. [2023-08-26 09:09:14,904 INFO L140 encePairwiseOnDemand]: 365/376 looper letters, 869 selfloop transitions, 1400 changer transitions 0/2282 dead transitions. [2023-08-26 09:09:14,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 2282 transitions, 46569 flow [2023-08-26 09:09:14,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-08-26 09:09:14,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-08-26 09:09:14,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 6898 transitions. [2023-08-26 09:09:14,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4586436170212766 [2023-08-26 09:09:14,910 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 6898 transitions. [2023-08-26 09:09:14,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 6898 transitions. [2023-08-26 09:09:14,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:09:14,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 6898 transitions. [2023-08-26 09:09:14,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 172.45) internal successors, (6898), 40 states have internal predecessors, (6898), 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) [2023-08-26 09:09:14,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 376.0) internal successors, (15416), 41 states have internal predecessors, (15416), 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) [2023-08-26 09:09:14,925 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 376.0) internal successors, (15416), 41 states have internal predecessors, (15416), 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) [2023-08-26 09:09:14,925 INFO L175 Difference]: Start difference. First operand has 295 places, 1331 transitions, 26598 flow. Second operand 40 states and 6898 transitions. [2023-08-26 09:09:14,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 2282 transitions, 46569 flow [2023-08-26 09:09:33,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 2282 transitions, 45848 flow, removed 85 selfloop flow, removed 2 redundant places. [2023-08-26 09:09:33,763 INFO L231 Difference]: Finished difference. Result has 356 places, 1900 transitions, 41088 flow [2023-08-26 09:09:33,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=26032, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=855, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=41088, PETRI_PLACES=356, PETRI_TRANSITIONS=1900} [2023-08-26 09:09:33,766 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 294 predicate places. [2023-08-26 09:09:33,766 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 1900 transitions, 41088 flow [2023-08-26 09:09:33,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 164.94444444444446) internal successors, (2969), 18 states have internal predecessors, (2969), 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) [2023-08-26 09:09:33,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:09:33,766 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:09:33,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-26 09:09:33,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:09:33,971 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2023-08-26 09:09:33,971 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:09:33,971 INFO L85 PathProgramCache]: Analyzing trace with hash 228663518, now seen corresponding path program 6 times [2023-08-26 09:09:33,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:09:33,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467541315] [2023-08-26 09:09:33,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:09:33,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:09:33,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:09:34,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:09:34,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:09:34,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467541315] [2023-08-26 09:09:34,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467541315] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:09:34,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371937548] [2023-08-26 09:09:34,091 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 09:09:34,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:09:34,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:09:34,092 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:09:34,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-26 09:09:34,217 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-26 09:09:34,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:09:34,218 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-26 09:09:34,219 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:09:34,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:09:34,291 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:09:34,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:09:34,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371937548] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-26 09:09:34,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-26 09:09:34,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 7] total 12 [2023-08-26 09:09:34,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125075472] [2023-08-26 09:09:34,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:09:34,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 09:09:34,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:09:34,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 09:09:34,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-08-26 09:09:34,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 376 [2023-08-26 09:09:34,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 1900 transitions, 41088 flow. Second operand has 6 states, 6 states have (on average 170.5) internal successors, (1023), 6 states have internal predecessors, (1023), 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) [2023-08-26 09:09:34,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:09:34,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 376 [2023-08-26 09:09:34,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:09:53,442 INFO L124 PetriNetUnfolderBase]: 35408/58792 cut-off events. [2023-08-26 09:09:53,442 INFO L125 PetriNetUnfolderBase]: For 1602571/1632050 co-relation queries the response was YES. [2023-08-26 09:09:55,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 427040 conditions, 58792 events. 35408/58792 cut-off events. For 1602571/1632050 co-relation queries the response was YES. Maximal size of possible extension queue 2949. Compared 533393 event pairs, 4262 based on Foata normal form. 2840/57476 useless extension candidates. Maximal degree in co-relation 426902. Up to 16734 conditions per place. [2023-08-26 09:09:55,491 INFO L140 encePairwiseOnDemand]: 368/376 looper letters, 1696 selfloop transitions, 827 changer transitions 0/2578 dead transitions. [2023-08-26 09:09:55,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 2578 transitions, 56810 flow [2023-08-26 09:09:55,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-26 09:09:55,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-26 09:09:55,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1624 transitions. [2023-08-26 09:09:55,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4799054373522459 [2023-08-26 09:09:55,493 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1624 transitions. [2023-08-26 09:09:55,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1624 transitions. [2023-08-26 09:09:55,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:09:55,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1624 transitions. [2023-08-26 09:09:55,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 180.44444444444446) internal successors, (1624), 9 states have internal predecessors, (1624), 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) [2023-08-26 09:09:55,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 376.0) internal successors, (3760), 10 states have internal predecessors, (3760), 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) [2023-08-26 09:09:55,496 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 376.0) internal successors, (3760), 10 states have internal predecessors, (3760), 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) [2023-08-26 09:09:55,496 INFO L175 Difference]: Start difference. First operand has 356 places, 1900 transitions, 41088 flow. Second operand 9 states and 1624 transitions. [2023-08-26 09:09:55,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 2578 transitions, 56810 flow [2023-08-26 09:10:29,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 2578 transitions, 54200 flow, removed 1305 selfloop flow, removed 0 redundant places. [2023-08-26 09:10:29,059 INFO L231 Difference]: Finished difference. Result has 368 places, 2012 transitions, 44175 flow [2023-08-26 09:10:29,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=39118, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1900, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=715, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=44175, PETRI_PLACES=368, PETRI_TRANSITIONS=2012} [2023-08-26 09:10:29,061 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 306 predicate places. [2023-08-26 09:10:29,061 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 2012 transitions, 44175 flow [2023-08-26 09:10:29,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 170.5) internal successors, (1023), 6 states have internal predecessors, (1023), 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) [2023-08-26 09:10:29,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:10:29,061 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:10:29,065 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-26 09:10:29,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:10:29,265 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2023-08-26 09:10:29,266 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:10:29,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1344966062, now seen corresponding path program 7 times [2023-08-26 09:10:29,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:10:29,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337892232] [2023-08-26 09:10:29,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:10:29,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:10:29,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:10:29,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:10:29,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:10:29,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337892232] [2023-08-26 09:10:29,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337892232] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:10:29,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:10:29,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-26 09:10:29,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487059292] [2023-08-26 09:10:29,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:10:29,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-26 09:10:29,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:10:29,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-26 09:10:29,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-08-26 09:10:29,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 376 [2023-08-26 09:10:29,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 2012 transitions, 44175 flow. Second operand has 8 states, 8 states have (on average 165.75) internal successors, (1326), 8 states have internal predecessors, (1326), 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) [2023-08-26 09:10:29,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:10:29,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 376 [2023-08-26 09:10:29,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:10:49,954 INFO L124 PetriNetUnfolderBase]: 35943/59920 cut-off events. [2023-08-26 09:10:49,954 INFO L125 PetriNetUnfolderBase]: For 1570916/1600605 co-relation queries the response was YES. [2023-08-26 09:10:51,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 434580 conditions, 59920 events. 35943/59920 cut-off events. For 1570916/1600605 co-relation queries the response was YES. Maximal size of possible extension queue 3059. Compared 548487 event pairs, 4818 based on Foata normal form. 3186/58711 useless extension candidates. Maximal degree in co-relation 434437. Up to 20435 conditions per place. [2023-08-26 09:10:52,032 INFO L140 encePairwiseOnDemand]: 365/376 looper letters, 1829 selfloop transitions, 523 changer transitions 0/2365 dead transitions. [2023-08-26 09:10:52,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 2365 transitions, 54301 flow [2023-08-26 09:10:52,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-26 09:10:52,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-26 09:10:52,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2104 transitions. [2023-08-26 09:10:52,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46631205673758863 [2023-08-26 09:10:52,034 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2104 transitions. [2023-08-26 09:10:52,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2104 transitions. [2023-08-26 09:10:52,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:10:52,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2104 transitions. [2023-08-26 09:10:52,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 175.33333333333334) internal successors, (2104), 12 states have internal predecessors, (2104), 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) [2023-08-26 09:10:52,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 376.0) internal successors, (4888), 13 states have internal predecessors, (4888), 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) [2023-08-26 09:10:52,038 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 376.0) internal successors, (4888), 13 states have internal predecessors, (4888), 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) [2023-08-26 09:10:52,038 INFO L175 Difference]: Start difference. First operand has 368 places, 2012 transitions, 44175 flow. Second operand 12 states and 2104 transitions. [2023-08-26 09:10:52,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 2365 transitions, 54301 flow [2023-08-26 09:11:20,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 2365 transitions, 53839 flow, removed 124 selfloop flow, removed 1 redundant places. [2023-08-26 09:11:20,175 INFO L231 Difference]: Finished difference. Result has 384 places, 2041 transitions, 46177 flow [2023-08-26 09:11:20,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=43718, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2012, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=494, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1504, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=46177, PETRI_PLACES=384, PETRI_TRANSITIONS=2041} [2023-08-26 09:11:20,176 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 322 predicate places. [2023-08-26 09:11:20,176 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 2041 transitions, 46177 flow [2023-08-26 09:11:20,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 165.75) internal successors, (1326), 8 states have internal predecessors, (1326), 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) [2023-08-26 09:11:20,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:11:20,177 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:11:20,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-26 09:11:20,177 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2023-08-26 09:11:20,177 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:11:20,177 INFO L85 PathProgramCache]: Analyzing trace with hash 443081694, now seen corresponding path program 11 times [2023-08-26 09:11:20,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:11:20,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006873278] [2023-08-26 09:11:20,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:11:20,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:11:20,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:11:20,290 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:11:20,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:11:20,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006873278] [2023-08-26 09:11:20,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006873278] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:11:20,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383570167] [2023-08-26 09:11:20,291 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 09:11:20,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:11:20,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:11:20,292 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:11:20,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-26 09:11:20,431 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 09:11:20,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:11:20,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-26 09:11:20,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:11:20,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:11:20,544 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:11:21,101 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:11:21,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383570167] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:11:21,102 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:11:21,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 18 [2023-08-26 09:11:21,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864053209] [2023-08-26 09:11:21,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:11:21,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-26 09:11:21,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:11:21,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-26 09:11:21,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2023-08-26 09:11:21,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 376 [2023-08-26 09:11:21,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 2041 transitions, 46177 flow. Second operand has 18 states, 18 states have (on average 165.22222222222223) internal successors, (2974), 18 states have internal predecessors, (2974), 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) [2023-08-26 09:11:21,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:11:21,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 376 [2023-08-26 09:11:21,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:11:47,537 INFO L124 PetriNetUnfolderBase]: 40650/68634 cut-off events. [2023-08-26 09:11:47,537 INFO L125 PetriNetUnfolderBase]: For 1943936/1979416 co-relation queries the response was YES. [2023-08-26 09:11:49,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 512453 conditions, 68634 events. 40650/68634 cut-off events. For 1943936/1979416 co-relation queries the response was YES. Maximal size of possible extension queue 3460. Compared 648590 event pairs, 3410 based on Foata normal form. 6983/71057 useless extension candidates. Maximal degree in co-relation 512305. Up to 12584 conditions per place. [2023-08-26 09:11:50,102 INFO L140 encePairwiseOnDemand]: 364/376 looper letters, 1543 selfloop transitions, 1609 changer transitions 0/3165 dead transitions. [2023-08-26 09:11:50,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 3165 transitions, 72241 flow [2023-08-26 09:11:50,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-08-26 09:11:50,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-08-26 09:11:50,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 6262 transitions. [2023-08-26 09:11:50,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46261820330969267 [2023-08-26 09:11:50,106 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 6262 transitions. [2023-08-26 09:11:50,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 6262 transitions. [2023-08-26 09:11:50,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:11:50,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 6262 transitions. [2023-08-26 09:11:50,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 173.94444444444446) internal successors, (6262), 36 states have internal predecessors, (6262), 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) [2023-08-26 09:11:50,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 376.0) internal successors, (13912), 37 states have internal predecessors, (13912), 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) [2023-08-26 09:11:50,118 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 376.0) internal successors, (13912), 37 states have internal predecessors, (13912), 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) [2023-08-26 09:11:50,118 INFO L175 Difference]: Start difference. First operand has 384 places, 2041 transitions, 46177 flow. Second operand 36 states and 6262 transitions. [2023-08-26 09:11:50,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 3165 transitions, 72241 flow [2023-08-26 09:12:30,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 3165 transitions, 72083 flow, removed 36 selfloop flow, removed 3 redundant places. [2023-08-26 09:12:30,660 INFO L231 Difference]: Finished difference. Result has 435 places, 2530 transitions, 61877 flow [2023-08-26 09:12:30,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=45888, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2035, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=809, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=61877, PETRI_PLACES=435, PETRI_TRANSITIONS=2530} [2023-08-26 09:12:30,661 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 373 predicate places. [2023-08-26 09:12:30,661 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 2530 transitions, 61877 flow [2023-08-26 09:12:30,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 165.22222222222223) internal successors, (2974), 18 states have internal predecessors, (2974), 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) [2023-08-26 09:12:30,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:12:30,662 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:12:30,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-26 09:12:30,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-08-26 09:12:30,866 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2023-08-26 09:12:30,866 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:12:30,866 INFO L85 PathProgramCache]: Analyzing trace with hash 371125126, now seen corresponding path program 8 times [2023-08-26 09:12:30,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:12:30,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869840016] [2023-08-26 09:12:30,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:12:30,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:12:30,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:12:30,978 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:12:30,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:12:30,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869840016] [2023-08-26 09:12:30,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869840016] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:12:30,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:12:30,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-26 09:12:30,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574109032] [2023-08-26 09:12:30,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:12:30,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-26 09:12:30,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:12:30,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-26 09:12:30,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-08-26 09:12:30,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 376 [2023-08-26 09:12:30,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 2530 transitions, 61877 flow. Second operand has 8 states, 8 states have (on average 165.75) internal successors, (1326), 8 states have internal predecessors, (1326), 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) [2023-08-26 09:12:30,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:12:30,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 376 [2023-08-26 09:12:30,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:13:00,894 INFO L124 PetriNetUnfolderBase]: 40160/67627 cut-off events. [2023-08-26 09:13:00,894 INFO L125 PetriNetUnfolderBase]: For 2395416/2435145 co-relation queries the response was YES. [2023-08-26 09:13:03,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 551784 conditions, 67627 events. 40160/67627 cut-off events. For 2395416/2435145 co-relation queries the response was YES. Maximal size of possible extension queue 3421. Compared 639332 event pairs, 6954 based on Foata normal form. 5992/68946 useless extension candidates. Maximal degree in co-relation 551620. Up to 24451 conditions per place. [2023-08-26 09:13:04,114 INFO L140 encePairwiseOnDemand]: 366/376 looper letters, 2009 selfloop transitions, 811 changer transitions 0/2833 dead transitions. [2023-08-26 09:13:04,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 2833 transitions, 72087 flow [2023-08-26 09:13:04,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-26 09:13:04,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-26 09:13:04,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1933 transitions. [2023-08-26 09:13:04,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46735976789168276 [2023-08-26 09:13:04,116 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1933 transitions. [2023-08-26 09:13:04,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1933 transitions. [2023-08-26 09:13:04,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:13:04,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1933 transitions. [2023-08-26 09:13:04,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 175.72727272727272) internal successors, (1933), 11 states have internal predecessors, (1933), 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) [2023-08-26 09:13:04,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 376.0) internal successors, (4512), 12 states have internal predecessors, (4512), 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) [2023-08-26 09:13:04,120 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 376.0) internal successors, (4512), 12 states have internal predecessors, (4512), 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) [2023-08-26 09:13:04,120 INFO L175 Difference]: Start difference. First operand has 435 places, 2530 transitions, 61877 flow. Second operand 11 states and 1933 transitions. [2023-08-26 09:13:04,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 2833 transitions, 72087 flow [2023-08-26 09:13:54,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 2833 transitions, 70400 flow, removed 477 selfloop flow, removed 4 redundant places. [2023-08-26 09:13:54,946 INFO L231 Difference]: Finished difference. Result has 441 places, 2533 transitions, 62037 flow [2023-08-26 09:13:54,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=60223, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=804, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1722, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=62037, PETRI_PLACES=441, PETRI_TRANSITIONS=2533} [2023-08-26 09:13:54,948 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 379 predicate places. [2023-08-26 09:13:54,948 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 2533 transitions, 62037 flow [2023-08-26 09:13:54,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 165.75) internal successors, (1326), 8 states have internal predecessors, (1326), 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) [2023-08-26 09:13:54,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:13:54,948 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:13:54,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-26 09:13:54,948 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2023-08-26 09:13:54,949 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:13:54,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1788188482, now seen corresponding path program 12 times [2023-08-26 09:13:54,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:13:54,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982398626] [2023-08-26 09:13:54,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:13:54,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:13:54,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:13:55,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:13:55,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:13:55,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982398626] [2023-08-26 09:13:55,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982398626] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:13:55,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40802593] [2023-08-26 09:13:55,064 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 09:13:55,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:13:55,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:13:55,066 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:13:55,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-26 09:13:55,201 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-26 09:13:55,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:13:55,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-26 09:13:55,203 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:13:55,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:13:55,294 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:13:55,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:13:55,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40802593] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:13:55,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:13:55,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 17 [2023-08-26 09:13:55,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859211331] [2023-08-26 09:13:55,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:13:55,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-26 09:13:55,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:13:55,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-26 09:13:55,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2023-08-26 09:13:55,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 376 [2023-08-26 09:13:55,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 2533 transitions, 62037 flow. Second operand has 17 states, 17 states have (on average 165.23529411764707) internal successors, (2809), 17 states have internal predecessors, (2809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:13:55,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:13:55,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 376 [2023-08-26 09:13:55,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:14:33,535 INFO L124 PetriNetUnfolderBase]: 48122/81465 cut-off events. [2023-08-26 09:14:33,536 INFO L125 PetriNetUnfolderBase]: For 2897163/2939734 co-relation queries the response was YES. [2023-08-26 09:14:36,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 662007 conditions, 81465 events. 48122/81465 cut-off events. For 2897163/2939734 co-relation queries the response was YES. Maximal size of possible extension queue 3956. Compared 782811 event pairs, 4583 based on Foata normal form. 8869/85362 useless extension candidates. Maximal degree in co-relation 661842. Up to 14459 conditions per place. [2023-08-26 09:14:37,307 INFO L140 encePairwiseOnDemand]: 364/376 looper letters, 1405 selfloop transitions, 2559 changer transitions 1/3978 dead transitions. [2023-08-26 09:14:37,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 3978 transitions, 100033 flow [2023-08-26 09:14:37,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-08-26 09:14:37,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2023-08-26 09:14:37,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7769 transitions. [2023-08-26 09:14:37,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45916075650118204 [2023-08-26 09:14:37,312 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 7769 transitions. [2023-08-26 09:14:37,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 7769 transitions. [2023-08-26 09:14:37,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:14:37,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 7769 transitions. [2023-08-26 09:14:37,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 172.64444444444445) internal successors, (7769), 45 states have internal predecessors, (7769), 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) [2023-08-26 09:14:37,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 376.0) internal successors, (17296), 46 states have internal predecessors, (17296), 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) [2023-08-26 09:14:37,325 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 376.0) internal successors, (17296), 46 states have internal predecessors, (17296), 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) [2023-08-26 09:14:37,325 INFO L175 Difference]: Start difference. First operand has 441 places, 2533 transitions, 62037 flow. Second operand 45 states and 7769 transitions. [2023-08-26 09:14:37,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 3978 transitions, 100033 flow