/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 INSUFFICIENT_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/unroll-cond-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 21:34:37,397 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 21:34:37,459 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 [2023-08-25 21:34:37,462 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 21:34:37,463 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 21:34:37,487 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 21:34:37,488 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 21:34:37,489 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 21:34:37,489 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 21:34:37,493 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 21:34:37,494 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 21:34:37,494 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 21:34:37,494 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 21:34:37,495 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 21:34:37,495 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 21:34:37,495 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 21:34:37,495 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 21:34:37,496 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 21:34:37,496 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 21:34:37,496 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 21:34:37,496 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 21:34:37,497 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 21:34:37,497 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 21:34:37,497 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 21:34:37,497 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 21:34:37,498 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 21:34:37,498 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 21:34:37,498 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 21:34:37,498 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 21:34:37,498 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 21:34:37,499 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 21:34:37,499 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 21:34:37,499 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 21:34:37,499 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 21:34:37,500 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 21:34:37,500 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 21:34:37,728 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 21:34:37,745 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 21:34:37,747 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 21:34:37,747 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 21:34:37,748 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 21:34:37,749 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-cond-2.wvr.c [2023-08-25 21:34:38,709 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 21:34:38,897 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 21:34:38,898 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-2.wvr.c [2023-08-25 21:34:38,903 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6404ceb9/8fcff8a4e547442fbb00305f43f3a473/FLAGb6087da67 [2023-08-25 21:34:38,916 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6404ceb9/8fcff8a4e547442fbb00305f43f3a473 [2023-08-25 21:34:38,919 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 21:34:38,920 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 21:34:38,921 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 21:34:38,921 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 21:34:38,923 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 21:34:38,924 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 09:34:38" (1/1) ... [2023-08-25 21:34:38,925 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d84125c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:34:38, skipping insertion in model container [2023-08-25 21:34:38,925 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 09:34:38" (1/1) ... [2023-08-25 21:34:38,940 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 21:34:39,052 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 21:34:39,057 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 21:34:39,076 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 21:34:39,085 INFO L206 MainTranslator]: Completed translation [2023-08-25 21:34:39,085 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:34:39 WrapperNode [2023-08-25 21:34:39,086 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 21:34:39,086 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 21:34:39,086 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 21:34:39,086 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 21:34:39,091 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:34:39" (1/1) ... [2023-08-25 21:34:39,098 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:34:39" (1/1) ... [2023-08-25 21:34:39,115 INFO L138 Inliner]: procedures = 24, calls = 34, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 282 [2023-08-25 21:34:39,115 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 21:34:39,116 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 21:34:39,116 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 21:34:39,116 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 21:34:39,122 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:34:39" (1/1) ... [2023-08-25 21:34:39,122 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:34:39" (1/1) ... [2023-08-25 21:34:39,125 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:34:39" (1/1) ... [2023-08-25 21:34:39,125 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:34:39" (1/1) ... [2023-08-25 21:34:39,132 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:34:39" (1/1) ... [2023-08-25 21:34:39,134 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:34:39" (1/1) ... [2023-08-25 21:34:39,135 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:34:39" (1/1) ... [2023-08-25 21:34:39,136 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:34:39" (1/1) ... [2023-08-25 21:34:39,138 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 21:34:39,139 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 21:34:39,139 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 21:34:39,139 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 21:34:39,140 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:34:39" (1/1) ... [2023-08-25 21:34:39,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 21:34:39,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:34:39,162 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) [2023-08-25 21:34:39,179 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 [2023-08-25 21:34:39,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 21:34:39,200 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-25 21:34:39,200 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-25 21:34:39,200 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-25 21:34:39,200 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-25 21:34:39,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 21:34:39,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 21:34:39,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 21:34:39,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-25 21:34:39,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 21:34:39,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 21:34:39,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 21:34:39,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 21:34:39,203 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-25 21:34:39,303 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 21:34:39,304 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 21:34:39,695 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 21:34:39,703 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 21:34:39,703 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-25 21:34:39,705 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 09:34:39 BoogieIcfgContainer [2023-08-25 21:34:39,705 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 21:34:39,706 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 21:34:39,707 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 21:34:39,709 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 21:34:39,709 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 09:34:38" (1/3) ... [2023-08-25 21:34:39,709 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65832ba5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 09:34:39, skipping insertion in model container [2023-08-25 21:34:39,710 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:34:39" (2/3) ... [2023-08-25 21:34:39,710 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65832ba5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 09:34:39, skipping insertion in model container [2023-08-25 21:34:39,710 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 09:34:39" (3/3) ... [2023-08-25 21:34:39,711 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-cond-2.wvr.c [2023-08-25 21:34:39,724 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 21:34:39,724 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2023-08-25 21:34:39,724 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 21:34:39,858 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-25 21:34:39,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 332 places, 344 transitions, 704 flow [2023-08-25 21:34:39,956 INFO L124 PetriNetUnfolderBase]: 19/342 cut-off events. [2023-08-25 21:34:39,957 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 21:34:39,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 351 conditions, 342 events. 19/342 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 777 event pairs, 0 based on Foata normal form. 0/281 useless extension candidates. Maximal degree in co-relation 214. Up to 2 conditions per place. [2023-08-25 21:34:39,975 INFO L82 GeneralOperation]: Start removeDead. Operand has 332 places, 344 transitions, 704 flow [2023-08-25 21:34:39,981 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 321 places, 333 transitions, 678 flow [2023-08-25 21:34:39,983 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 21:34:39,992 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 321 places, 333 transitions, 678 flow [2023-08-25 21:34:39,997 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 321 places, 333 transitions, 678 flow [2023-08-25 21:34:39,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 321 places, 333 transitions, 678 flow [2023-08-25 21:34:40,056 INFO L124 PetriNetUnfolderBase]: 19/333 cut-off events. [2023-08-25 21:34:40,056 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 21:34:40,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342 conditions, 333 events. 19/333 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 745 event pairs, 0 based on Foata normal form. 0/273 useless extension candidates. Maximal degree in co-relation 214. Up to 2 conditions per place. [2023-08-25 21:34:40,068 INFO L119 LiptonReduction]: Number of co-enabled transitions 21580 [2023-08-25 21:34:45,262 INFO L134 LiptonReduction]: Checked pairs total: 84577 [2023-08-25 21:34:45,262 INFO L136 LiptonReduction]: Total number of compositions: 332 [2023-08-25 21:34:45,289 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 21:34:45,295 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;@446ad2e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 21:34:45,296 INFO L358 AbstractCegarLoop]: Starting to check reachability of 75 error locations. [2023-08-25 21:34:45,299 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 21:34:45,299 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-25 21:34:45,299 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 21:34:45,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:34:45,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-25 21:34:45,300 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 71 more)] === [2023-08-25 21:34:45,302 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:34:45,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1326, now seen corresponding path program 1 times [2023-08-25 21:34:45,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:34:45,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771961875] [2023-08-25 21:34:45,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:34:45,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:34:45,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:34:45,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:34:45,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:34:45,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771961875] [2023-08-25 21:34:45,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771961875] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:34:45,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:34:45,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-25 21:34:45,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246647581] [2023-08-25 21:34:45,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:34:45,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 21:34:45,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:34:45,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 21:34:45,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 21:34:45,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 676 [2023-08-25 21:34:45,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 114 transitions, 240 flow. Second operand has 2 states, 2 states have (on average 328.5) internal successors, (657), 2 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:45,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:34:45,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 676 [2023-08-25 21:34:45,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:34:45,583 INFO L124 PetriNetUnfolderBase]: 841/2077 cut-off events. [2023-08-25 21:34:45,583 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2023-08-25 21:34:45,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3401 conditions, 2077 events. 841/2077 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 15474 event pairs, 554 based on Foata normal form. 209/1923 useless extension candidates. Maximal degree in co-relation 3069. Up to 1279 conditions per place. [2023-08-25 21:34:45,593 INFO L140 encePairwiseOnDemand]: 649/676 looper letters, 43 selfloop transitions, 0 changer transitions 0/87 dead transitions. [2023-08-25 21:34:45,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 87 transitions, 272 flow [2023-08-25 21:34:45,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 21:34:45,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 21:34:45,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 726 transitions. [2023-08-25 21:34:45,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5369822485207101 [2023-08-25 21:34:45,604 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 726 transitions. [2023-08-25 21:34:45,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 726 transitions. [2023-08-25 21:34:45,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:34:45,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 726 transitions. [2023-08-25 21:34:45,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 363.0) internal successors, (726), 2 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:45,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 676.0) internal successors, (2028), 3 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:45,614 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 676.0) internal successors, (2028), 3 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:45,615 INFO L175 Difference]: Start difference. First operand has 111 places, 114 transitions, 240 flow. Second operand 2 states and 726 transitions. [2023-08-25 21:34:45,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 87 transitions, 272 flow [2023-08-25 21:34:45,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 87 transitions, 264 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 21:34:45,619 INFO L231 Difference]: Finished difference. Result has 84 places, 87 transitions, 178 flow [2023-08-25 21:34:45,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=178, PETRI_PLACES=84, PETRI_TRANSITIONS=87} [2023-08-25 21:34:45,622 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, -27 predicate places. [2023-08-25 21:34:45,623 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 87 transitions, 178 flow [2023-08-25 21:34:45,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 328.5) internal successors, (657), 2 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:45,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:34:45,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-25 21:34:45,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 21:34:45,623 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 71 more)] === [2023-08-25 21:34:45,624 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:34:45,624 INFO L85 PathProgramCache]: Analyzing trace with hash 617922587, now seen corresponding path program 1 times [2023-08-25 21:34:45,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:34:45,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503583024] [2023-08-25 21:34:45,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:34:45,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:34:45,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:34:45,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:34:45,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:34:45,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503583024] [2023-08-25 21:34:45,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503583024] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:34:45,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:34:45,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 21:34:45,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356163351] [2023-08-25 21:34:45,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:34:45,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 21:34:45,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:34:45,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 21:34:45,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 21:34:45,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 676 [2023-08-25 21:34:45,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 87 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:45,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:34:45,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 676 [2023-08-25 21:34:45,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:34:45,882 INFO L124 PetriNetUnfolderBase]: 872/1989 cut-off events. [2023-08-25 21:34:45,882 INFO L125 PetriNetUnfolderBase]: For 24/38 co-relation queries the response was YES. [2023-08-25 21:34:45,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3405 conditions, 1989 events. 872/1989 cut-off events. For 24/38 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 13179 event pairs, 396 based on Foata normal form. 1/1767 useless extension candidates. Maximal degree in co-relation 3402. Up to 1395 conditions per place. [2023-08-25 21:34:45,890 INFO L140 encePairwiseOnDemand]: 671/676 looper letters, 49 selfloop transitions, 2 changer transitions 0/89 dead transitions. [2023-08-25 21:34:45,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 89 transitions, 285 flow [2023-08-25 21:34:45,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 21:34:45,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 21:34:45,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1002 transitions. [2023-08-25 21:34:45,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4940828402366864 [2023-08-25 21:34:45,893 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1002 transitions. [2023-08-25 21:34:45,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1002 transitions. [2023-08-25 21:34:45,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:34:45,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1002 transitions. [2023-08-25 21:34:45,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 334.0) internal successors, (1002), 3 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:45,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 676.0) internal successors, (2704), 4 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:45,901 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 676.0) internal successors, (2704), 4 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:45,901 INFO L175 Difference]: Start difference. First operand has 84 places, 87 transitions, 178 flow. Second operand 3 states and 1002 transitions. [2023-08-25 21:34:45,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 89 transitions, 285 flow [2023-08-25 21:34:45,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 89 transitions, 285 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 21:34:45,904 INFO L231 Difference]: Finished difference. Result has 84 places, 86 transitions, 186 flow [2023-08-25 21:34:45,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=84, PETRI_TRANSITIONS=86} [2023-08-25 21:34:45,905 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, -27 predicate places. [2023-08-25 21:34:45,905 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 86 transitions, 186 flow [2023-08-25 21:34:45,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:45,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:34:45,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:34:45,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 21:34:45,907 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 71 more)] === [2023-08-25 21:34:45,908 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:34:45,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1118593356, now seen corresponding path program 1 times [2023-08-25 21:34:45,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:34:45,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943387216] [2023-08-25 21:34:45,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:34:45,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:34:45,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:34:45,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:34:45,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:34:45,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943387216] [2023-08-25 21:34:45,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943387216] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:34:45,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:34:45,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 21:34:45,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397395119] [2023-08-25 21:34:45,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:34:45,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 21:34:45,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:34:45,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 21:34:45,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 21:34:45,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 676 [2023-08-25 21:34:45,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 86 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:45,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:34:45,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 676 [2023-08-25 21:34:45,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:34:46,157 INFO L124 PetriNetUnfolderBase]: 780/1993 cut-off events. [2023-08-25 21:34:46,157 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2023-08-25 21:34:46,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3294 conditions, 1993 events. 780/1993 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 14545 event pairs, 577 based on Foata normal form. 0/1688 useless extension candidates. Maximal degree in co-relation 3290. Up to 1232 conditions per place. [2023-08-25 21:34:46,164 INFO L140 encePairwiseOnDemand]: 671/676 looper letters, 42 selfloop transitions, 1 changer transitions 0/82 dead transitions. [2023-08-25 21:34:46,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 82 transitions, 264 flow [2023-08-25 21:34:46,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 21:34:46,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 21:34:46,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 968 transitions. [2023-08-25 21:34:46,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47731755424063116 [2023-08-25 21:34:46,166 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 968 transitions. [2023-08-25 21:34:46,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 968 transitions. [2023-08-25 21:34:46,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:34:46,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 968 transitions. [2023-08-25 21:34:46,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:46,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 676.0) internal successors, (2704), 4 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:46,172 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 676.0) internal successors, (2704), 4 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:46,172 INFO L175 Difference]: Start difference. First operand has 84 places, 86 transitions, 186 flow. Second operand 3 states and 968 transitions. [2023-08-25 21:34:46,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 82 transitions, 264 flow [2023-08-25 21:34:46,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 82 transitions, 264 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 21:34:46,174 INFO L231 Difference]: Finished difference. Result has 82 places, 82 transitions, 180 flow [2023-08-25 21:34:46,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=82, PETRI_TRANSITIONS=82} [2023-08-25 21:34:46,175 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, -29 predicate places. [2023-08-25 21:34:46,176 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 82 transitions, 180 flow [2023-08-25 21:34:46,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:46,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:34:46,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:34:46,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 21:34:46,179 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 71 more)] === [2023-08-25 21:34:46,179 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:34:46,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1118621698, now seen corresponding path program 1 times [2023-08-25 21:34:46,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:34:46,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482460083] [2023-08-25 21:34:46,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:34:46,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:34:46,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:34:46,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:34:46,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:34:46,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482460083] [2023-08-25 21:34:46,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482460083] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:34:46,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:34:46,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 21:34:46,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041116309] [2023-08-25 21:34:46,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:34:46,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 21:34:46,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:34:46,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 21:34:46,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 21:34:46,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 676 [2023-08-25 21:34:46,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 82 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:46,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:34:46,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 676 [2023-08-25 21:34:46,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:34:46,537 INFO L124 PetriNetUnfolderBase]: 2057/4136 cut-off events. [2023-08-25 21:34:46,537 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-08-25 21:34:46,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7577 conditions, 4136 events. 2057/4136 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 27771 event pairs, 833 based on Foata normal form. 0/3508 useless extension candidates. Maximal degree in co-relation 7572. Up to 1660 conditions per place. [2023-08-25 21:34:46,599 INFO L140 encePairwiseOnDemand]: 673/676 looper letters, 89 selfloop transitions, 2 changer transitions 0/125 dead transitions. [2023-08-25 21:34:46,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 125 transitions, 451 flow [2023-08-25 21:34:46,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 21:34:46,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 21:34:46,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1040 transitions. [2023-08-25 21:34:46,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5128205128205128 [2023-08-25 21:34:46,602 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1040 transitions. [2023-08-25 21:34:46,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1040 transitions. [2023-08-25 21:34:46,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:34:46,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1040 transitions. [2023-08-25 21:34:46,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 346.6666666666667) internal successors, (1040), 3 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:46,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 676.0) internal successors, (2704), 4 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:46,608 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 676.0) internal successors, (2704), 4 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:46,608 INFO L175 Difference]: Start difference. First operand has 82 places, 82 transitions, 180 flow. Second operand 3 states and 1040 transitions. [2023-08-25 21:34:46,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 125 transitions, 451 flow [2023-08-25 21:34:46,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 125 transitions, 450 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 21:34:46,611 INFO L231 Difference]: Finished difference. Result has 84 places, 83 transitions, 191 flow [2023-08-25 21:34:46,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=191, PETRI_PLACES=84, PETRI_TRANSITIONS=83} [2023-08-25 21:34:46,611 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, -27 predicate places. [2023-08-25 21:34:46,612 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 83 transitions, 191 flow [2023-08-25 21:34:46,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:46,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:34:46,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:34:46,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 21:34:46,613 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 71 more)] === [2023-08-25 21:34:46,613 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:34:46,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1859146892, now seen corresponding path program 1 times [2023-08-25 21:34:46,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:34:46,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850580200] [2023-08-25 21:34:46,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:34:46,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:34:46,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:34:46,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:34:46,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:34:46,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850580200] [2023-08-25 21:34:46,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850580200] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:34:46,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:34:46,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 21:34:46,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272050955] [2023-08-25 21:34:46,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:34:46,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 21:34:46,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:34:46,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 21:34:46,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 21:34:46,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 676 [2023-08-25 21:34:46,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 83 transitions, 191 flow. Second operand has 3 states, 3 states have (on average 312.0) internal successors, (936), 3 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:46,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:34:46,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 676 [2023-08-25 21:34:46,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:34:46,912 INFO L124 PetriNetUnfolderBase]: 1385/3395 cut-off events. [2023-08-25 21:34:46,912 INFO L125 PetriNetUnfolderBase]: For 162/162 co-relation queries the response was YES. [2023-08-25 21:34:46,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5887 conditions, 3395 events. 1385/3395 cut-off events. For 162/162 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 25560 event pairs, 1068 based on Foata normal form. 0/2975 useless extension candidates. Maximal degree in co-relation 5881. Up to 2208 conditions per place. [2023-08-25 21:34:46,928 INFO L140 encePairwiseOnDemand]: 673/676 looper letters, 43 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2023-08-25 21:34:46,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 84 transitions, 283 flow [2023-08-25 21:34:46,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 21:34:46,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 21:34:46,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 975 transitions. [2023-08-25 21:34:46,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4807692307692308 [2023-08-25 21:34:46,931 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 975 transitions. [2023-08-25 21:34:46,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 975 transitions. [2023-08-25 21:34:46,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:34:46,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 975 transitions. [2023-08-25 21:34:46,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 325.0) internal successors, (975), 3 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:46,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 676.0) internal successors, (2704), 4 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:46,937 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 676.0) internal successors, (2704), 4 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:46,937 INFO L175 Difference]: Start difference. First operand has 84 places, 83 transitions, 191 flow. Second operand 3 states and 975 transitions. [2023-08-25 21:34:46,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 84 transitions, 283 flow [2023-08-25 21:34:46,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 84 transitions, 281 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 21:34:46,939 INFO L231 Difference]: Finished difference. Result has 86 places, 84 transitions, 201 flow [2023-08-25 21:34:46,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=201, PETRI_PLACES=86, PETRI_TRANSITIONS=84} [2023-08-25 21:34:46,940 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, -25 predicate places. [2023-08-25 21:34:46,940 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 84 transitions, 201 flow [2023-08-25 21:34:46,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 312.0) internal successors, (936), 3 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:46,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:34:46,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:34:46,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-25 21:34:46,941 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 71 more)] === [2023-08-25 21:34:46,941 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:34:46,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1363372972, now seen corresponding path program 1 times [2023-08-25 21:34:46,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:34:46,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954805033] [2023-08-25 21:34:46,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:34:46,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:34:46,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:34:47,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 21:34:47,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:34:47,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954805033] [2023-08-25 21:34:47,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954805033] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:34:47,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:34:47,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 21:34:47,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237356] [2023-08-25 21:34:47,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:34:47,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 21:34:47,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:34:47,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 21:34:47,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 21:34:47,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 676 [2023-08-25 21:34:47,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 84 transitions, 201 flow. Second operand has 6 states, 6 states have (on average 281.8333333333333) internal successors, (1691), 6 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:47,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:34:47,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 676 [2023-08-25 21:34:47,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:34:48,386 INFO L124 PetriNetUnfolderBase]: 11671/18152 cut-off events. [2023-08-25 21:34:48,386 INFO L125 PetriNetUnfolderBase]: For 568/568 co-relation queries the response was YES. [2023-08-25 21:34:48,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36767 conditions, 18152 events. 11671/18152 cut-off events. For 568/568 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 117926 event pairs, 877 based on Foata normal form. 0/16031 useless extension candidates. Maximal degree in co-relation 36760. Up to 6946 conditions per place. [2023-08-25 21:34:48,453 INFO L140 encePairwiseOnDemand]: 671/676 looper letters, 272 selfloop transitions, 4 changer transitions 0/287 dead transitions. [2023-08-25 21:34:48,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 287 transitions, 1183 flow [2023-08-25 21:34:48,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 21:34:48,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 21:34:48,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1951 transitions. [2023-08-25 21:34:48,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48101577909270216 [2023-08-25 21:34:48,457 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1951 transitions. [2023-08-25 21:34:48,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1951 transitions. [2023-08-25 21:34:48,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:34:48,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1951 transitions. [2023-08-25 21:34:48,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 325.1666666666667) internal successors, (1951), 6 states have internal predecessors, (1951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:48,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 676.0) internal successors, (4732), 7 states have internal predecessors, (4732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:48,467 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 676.0) internal successors, (4732), 7 states have internal predecessors, (4732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:48,467 INFO L175 Difference]: Start difference. First operand has 86 places, 84 transitions, 201 flow. Second operand 6 states and 1951 transitions. [2023-08-25 21:34:48,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 287 transitions, 1183 flow [2023-08-25 21:34:48,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 287 transitions, 1179 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-25 21:34:48,470 INFO L231 Difference]: Finished difference. Result has 89 places, 83 transitions, 203 flow [2023-08-25 21:34:48,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=203, PETRI_PLACES=89, PETRI_TRANSITIONS=83} [2023-08-25 21:34:48,471 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, -22 predicate places. [2023-08-25 21:34:48,471 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 83 transitions, 203 flow [2023-08-25 21:34:48,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 281.8333333333333) internal successors, (1691), 6 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:48,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:34:48,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:34:48,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-25 21:34:48,472 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 71 more)] === [2023-08-25 21:34:48,472 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:34:48,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1058947983, now seen corresponding path program 1 times [2023-08-25 21:34:48,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:34:48,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468798608] [2023-08-25 21:34:48,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:34:48,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:34:48,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:34:48,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 21:34:48,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:34:48,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468798608] [2023-08-25 21:34:48,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468798608] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:34:48,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:34:48,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 21:34:48,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255491181] [2023-08-25 21:34:48,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:34:48,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 21:34:48,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:34:48,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 21:34:48,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 21:34:48,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 676 [2023-08-25 21:34:48,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 83 transitions, 203 flow. Second operand has 3 states, 3 states have (on average 298.6666666666667) internal successors, (896), 3 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:48,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:34:48,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 676 [2023-08-25 21:34:48,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:34:49,021 INFO L124 PetriNetUnfolderBase]: 3286/6194 cut-off events. [2023-08-25 21:34:49,022 INFO L125 PetriNetUnfolderBase]: For 1397/1397 co-relation queries the response was YES. [2023-08-25 21:34:49,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13099 conditions, 6194 events. 3286/6194 cut-off events. For 1397/1397 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 40228 event pairs, 1634 based on Foata normal form. 0/5453 useless extension candidates. Maximal degree in co-relation 13092. Up to 3016 conditions per place. [2023-08-25 21:34:49,052 INFO L140 encePairwiseOnDemand]: 669/676 looper letters, 92 selfloop transitions, 5 changer transitions 0/122 dead transitions. [2023-08-25 21:34:49,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 122 transitions, 485 flow [2023-08-25 21:34:49,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 21:34:49,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 21:34:49,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 984 transitions. [2023-08-25 21:34:49,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48520710059171596 [2023-08-25 21:34:49,055 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 984 transitions. [2023-08-25 21:34:49,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 984 transitions. [2023-08-25 21:34:49,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:34:49,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 984 transitions. [2023-08-25 21:34:49,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 328.0) internal successors, (984), 3 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:49,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 676.0) internal successors, (2704), 4 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:49,061 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 676.0) internal successors, (2704), 4 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:49,061 INFO L175 Difference]: Start difference. First operand has 89 places, 83 transitions, 203 flow. Second operand 3 states and 984 transitions. [2023-08-25 21:34:49,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 122 transitions, 485 flow [2023-08-25 21:34:49,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 122 transitions, 476 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 21:34:49,066 INFO L231 Difference]: Finished difference. Result has 88 places, 85 transitions, 223 flow [2023-08-25 21:34:49,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=223, PETRI_PLACES=88, PETRI_TRANSITIONS=85} [2023-08-25 21:34:49,068 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, -23 predicate places. [2023-08-25 21:34:49,068 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 85 transitions, 223 flow [2023-08-25 21:34:49,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 298.6666666666667) internal successors, (896), 3 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:49,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:34:49,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:34:49,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-25 21:34:49,069 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 71 more)] === [2023-08-25 21:34:49,069 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:34:49,069 INFO L85 PathProgramCache]: Analyzing trace with hash 154324076, now seen corresponding path program 1 times [2023-08-25 21:34:49,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:34:49,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145472715] [2023-08-25 21:34:49,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:34:49,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:34:49,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:34:49,098 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 21:34:49,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:34:49,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145472715] [2023-08-25 21:34:49,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145472715] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:34:49,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:34:49,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 21:34:49,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379785608] [2023-08-25 21:34:49,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:34:49,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 21:34:49,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:34:49,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 21:34:49,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 21:34:49,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 676 [2023-08-25 21:34:49,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 85 transitions, 223 flow. Second operand has 3 states, 3 states have (on average 316.0) internal successors, (948), 3 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:49,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:34:49,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 676 [2023-08-25 21:34:49,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:34:49,499 INFO L124 PetriNetUnfolderBase]: 2076/4781 cut-off events. [2023-08-25 21:34:49,499 INFO L125 PetriNetUnfolderBase]: For 561/561 co-relation queries the response was YES. [2023-08-25 21:34:49,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8939 conditions, 4781 events. 2076/4781 cut-off events. For 561/561 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 34800 event pairs, 700 based on Foata normal form. 0/4401 useless extension candidates. Maximal degree in co-relation 8931. Up to 3122 conditions per place. [2023-08-25 21:34:49,522 INFO L140 encePairwiseOnDemand]: 669/676 looper letters, 66 selfloop transitions, 3 changer transitions 0/103 dead transitions. [2023-08-25 21:34:49,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 103 transitions, 400 flow [2023-08-25 21:34:49,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 21:34:49,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 21:34:49,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1008 transitions. [2023-08-25 21:34:49,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4970414201183432 [2023-08-25 21:34:49,525 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1008 transitions. [2023-08-25 21:34:49,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1008 transitions. [2023-08-25 21:34:49,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:34:49,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1008 transitions. [2023-08-25 21:34:49,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 336.0) internal successors, (1008), 3 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:49,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 676.0) internal successors, (2704), 4 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:49,530 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 676.0) internal successors, (2704), 4 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:49,530 INFO L175 Difference]: Start difference. First operand has 88 places, 85 transitions, 223 flow. Second operand 3 states and 1008 transitions. [2023-08-25 21:34:49,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 103 transitions, 400 flow [2023-08-25 21:34:49,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 103 transitions, 395 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 21:34:49,532 INFO L231 Difference]: Finished difference. Result has 86 places, 84 transitions, 231 flow [2023-08-25 21:34:49,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=231, PETRI_PLACES=86, PETRI_TRANSITIONS=84} [2023-08-25 21:34:49,533 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, -25 predicate places. [2023-08-25 21:34:49,533 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 84 transitions, 231 flow [2023-08-25 21:34:49,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 316.0) internal successors, (948), 3 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:49,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:34:49,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:34:49,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-25 21:34:49,533 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err6ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 71 more)] === [2023-08-25 21:34:49,534 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:34:49,534 INFO L85 PathProgramCache]: Analyzing trace with hash -429848526, now seen corresponding path program 1 times [2023-08-25 21:34:49,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:34:49,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693011010] [2023-08-25 21:34:49,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:34:49,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:34:49,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:34:49,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 21:34:49,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:34:49,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693011010] [2023-08-25 21:34:49,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693011010] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:34:49,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:34:49,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 21:34:49,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607647570] [2023-08-25 21:34:49,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:34:49,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 21:34:49,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:34:49,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 21:34:49,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 21:34:49,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 676 [2023-08-25 21:34:49,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 84 transitions, 231 flow. Second operand has 6 states, 6 states have (on average 277.5) internal successors, (1665), 6 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:49,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:34:49,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 676 [2023-08-25 21:34:49,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:34:51,488 INFO L124 PetriNetUnfolderBase]: 16942/26492 cut-off events. [2023-08-25 21:34:51,488 INFO L125 PetriNetUnfolderBase]: For 1956/1956 co-relation queries the response was YES. [2023-08-25 21:34:51,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58106 conditions, 26492 events. 16942/26492 cut-off events. For 1956/1956 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 169181 event pairs, 10260 based on Foata normal form. 676/25661 useless extension candidates. Maximal degree in co-relation 58098. Up to 18321 conditions per place. [2023-08-25 21:34:51,629 INFO L140 encePairwiseOnDemand]: 670/676 looper letters, 250 selfloop transitions, 6 changer transitions 0/263 dead transitions. [2023-08-25 21:34:51,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 263 transitions, 1189 flow [2023-08-25 21:34:51,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 21:34:51,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 21:34:51,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1892 transitions. [2023-08-25 21:34:51,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46646942800788954 [2023-08-25 21:34:51,633 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1892 transitions. [2023-08-25 21:34:51,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1892 transitions. [2023-08-25 21:34:51,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:34:51,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1892 transitions. [2023-08-25 21:34:51,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 315.3333333333333) internal successors, (1892), 6 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:51,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 676.0) internal successors, (4732), 7 states have internal predecessors, (4732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:51,652 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 676.0) internal successors, (4732), 7 states have internal predecessors, (4732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:51,652 INFO L175 Difference]: Start difference. First operand has 86 places, 84 transitions, 231 flow. Second operand 6 states and 1892 transitions. [2023-08-25 21:34:51,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 263 transitions, 1189 flow [2023-08-25 21:34:51,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 263 transitions, 1189 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 21:34:51,657 INFO L231 Difference]: Finished difference. Result has 90 places, 83 transitions, 241 flow [2023-08-25 21:34:51,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=241, PETRI_PLACES=90, PETRI_TRANSITIONS=83} [2023-08-25 21:34:51,659 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, -21 predicate places. [2023-08-25 21:34:51,659 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 83 transitions, 241 flow [2023-08-25 21:34:51,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 277.5) internal successors, (1665), 6 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:51,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:34:51,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:34:51,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-25 21:34:51,660 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err6ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 71 more)] === [2023-08-25 21:34:51,660 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:34:51,660 INFO L85 PathProgramCache]: Analyzing trace with hash -475264982, now seen corresponding path program 1 times [2023-08-25 21:34:51,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:34:51,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044703323] [2023-08-25 21:34:51,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:34:51,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:34:51,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:34:51,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 21:34:51,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:34:51,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044703323] [2023-08-25 21:34:51,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044703323] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:34:51,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:34:51,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 21:34:51,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555996480] [2023-08-25 21:34:51,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:34:51,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 21:34:51,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:34:51,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 21:34:51,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 21:34:51,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 676 [2023-08-25 21:34:51,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 83 transitions, 241 flow. Second operand has 6 states, 6 states have (on average 271.6666666666667) internal successors, (1630), 6 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:51,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:34:51,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 676 [2023-08-25 21:34:51,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:34:53,596 INFO L124 PetriNetUnfolderBase]: 15497/24323 cut-off events. [2023-08-25 21:34:53,596 INFO L125 PetriNetUnfolderBase]: For 4899/4899 co-relation queries the response was YES. [2023-08-25 21:34:53,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56526 conditions, 24323 events. 15497/24323 cut-off events. For 4899/4899 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 151682 event pairs, 8381 based on Foata normal form. 820/23706 useless extension candidates. Maximal degree in co-relation 56517. Up to 14836 conditions per place. [2023-08-25 21:34:53,689 INFO L140 encePairwiseOnDemand]: 658/676 looper letters, 160 selfloop transitions, 17 changer transitions 0/184 dead transitions. [2023-08-25 21:34:53,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 184 transitions, 885 flow [2023-08-25 21:34:53,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 21:34:53,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 21:34:53,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1783 transitions. [2023-08-25 21:34:53,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4395956607495069 [2023-08-25 21:34:53,693 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1783 transitions. [2023-08-25 21:34:53,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1783 transitions. [2023-08-25 21:34:53,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:34:53,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1783 transitions. [2023-08-25 21:34:53,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 297.1666666666667) internal successors, (1783), 6 states have internal predecessors, (1783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:53,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 676.0) internal successors, (4732), 7 states have internal predecessors, (4732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:53,700 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 676.0) internal successors, (4732), 7 states have internal predecessors, (4732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:53,700 INFO L175 Difference]: Start difference. First operand has 90 places, 83 transitions, 241 flow. Second operand 6 states and 1783 transitions. [2023-08-25 21:34:53,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 184 transitions, 885 flow [2023-08-25 21:34:53,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 184 transitions, 825 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-25 21:34:53,708 INFO L231 Difference]: Finished difference. Result has 87 places, 80 transitions, 257 flow [2023-08-25 21:34:53,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=257, PETRI_PLACES=87, PETRI_TRANSITIONS=80} [2023-08-25 21:34:53,709 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, -24 predicate places. [2023-08-25 21:34:53,709 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 80 transitions, 257 flow [2023-08-25 21:34:53,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 271.6666666666667) internal successors, (1630), 6 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:53,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:34:53,710 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] [2023-08-25 21:34:53,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-25 21:34:53,710 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 71 more)] === [2023-08-25 21:34:53,710 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:34:53,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1745071122, now seen corresponding path program 1 times [2023-08-25 21:34:53,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:34:53,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548532450] [2023-08-25 21:34:53,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:34:53,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:34:53,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:34:54,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 21:34:54,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:34:54,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548532450] [2023-08-25 21:34:54,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548532450] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:34:54,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:34:54,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 21:34:54,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949295368] [2023-08-25 21:34:54,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:34:54,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 21:34:54,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:34:54,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 21:34:54,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 21:34:54,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 676 [2023-08-25 21:34:54,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 80 transitions, 257 flow. Second operand has 6 states, 6 states have (on average 283.0) internal successors, (1698), 6 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:54,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:34:54,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 676 [2023-08-25 21:34:54,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:34:55,410 INFO L124 PetriNetUnfolderBase]: 15387/24087 cut-off events. [2023-08-25 21:34:55,410 INFO L125 PetriNetUnfolderBase]: For 2575/2575 co-relation queries the response was YES. [2023-08-25 21:34:55,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57010 conditions, 24087 events. 15387/24087 cut-off events. For 2575/2575 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 149503 event pairs, 13201 based on Foata normal form. 0/22760 useless extension candidates. Maximal degree in co-relation 57001. Up to 22616 conditions per place. [2023-08-25 21:34:55,494 INFO L140 encePairwiseOnDemand]: 671/676 looper letters, 216 selfloop transitions, 4 changer transitions 0/227 dead transitions. [2023-08-25 21:34:55,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 227 transitions, 1231 flow [2023-08-25 21:34:55,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 21:34:55,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 21:34:55,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1878 transitions. [2023-08-25 21:34:55,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4630177514792899 [2023-08-25 21:34:55,499 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1878 transitions. [2023-08-25 21:34:55,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1878 transitions. [2023-08-25 21:34:55,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:34:55,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1878 transitions. [2023-08-25 21:34:55,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 313.0) internal successors, (1878), 6 states have internal predecessors, (1878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:55,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 676.0) internal successors, (4732), 7 states have internal predecessors, (4732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:55,506 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 676.0) internal successors, (4732), 7 states have internal predecessors, (4732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:55,506 INFO L175 Difference]: Start difference. First operand has 87 places, 80 transitions, 257 flow. Second operand 6 states and 1878 transitions. [2023-08-25 21:34:55,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 227 transitions, 1231 flow [2023-08-25 21:34:55,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 227 transitions, 1061 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-25 21:34:55,529 INFO L231 Difference]: Finished difference. Result has 86 places, 79 transitions, 229 flow [2023-08-25 21:34:55,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=229, PETRI_PLACES=86, PETRI_TRANSITIONS=79} [2023-08-25 21:34:55,529 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, -25 predicate places. [2023-08-25 21:34:55,529 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 79 transitions, 229 flow [2023-08-25 21:34:55,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 283.0) internal successors, (1698), 6 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:55,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:34:55,530 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, 1, 1, 1] [2023-08-25 21:34:55,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-25 21:34:55,530 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 71 more)] === [2023-08-25 21:34:55,531 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:34:55,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1432491259, now seen corresponding path program 1 times [2023-08-25 21:34:55,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:34:55,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994626288] [2023-08-25 21:34:55,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:34:55,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:34:55,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:34:55,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 21:34:55,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:34:55,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994626288] [2023-08-25 21:34:55,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994626288] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:34:55,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:34:55,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 21:34:55,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471759647] [2023-08-25 21:34:55,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:34:55,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 21:34:55,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:34:55,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 21:34:55,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-25 21:34:55,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 676 [2023-08-25 21:34:55,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 79 transitions, 229 flow. Second operand has 5 states, 5 states have (on average 313.2) internal successors, (1566), 5 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:55,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:34:55,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 676 [2023-08-25 21:34:55,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:34:56,148 INFO L124 PetriNetUnfolderBase]: 2334/4990 cut-off events. [2023-08-25 21:34:56,148 INFO L125 PetriNetUnfolderBase]: For 752/786 co-relation queries the response was YES. [2023-08-25 21:34:56,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10136 conditions, 4990 events. 2334/4990 cut-off events. For 752/786 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 34838 event pairs, 1260 based on Foata normal form. 6/4654 useless extension candidates. Maximal degree in co-relation 10127. Up to 1946 conditions per place. [2023-08-25 21:34:56,167 INFO L140 encePairwiseOnDemand]: 668/676 looper letters, 129 selfloop transitions, 5 changer transitions 0/161 dead transitions. [2023-08-25 21:34:56,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 161 transitions, 729 flow [2023-08-25 21:34:56,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 21:34:56,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 21:34:56,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1673 transitions. [2023-08-25 21:34:56,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49497041420118343 [2023-08-25 21:34:56,171 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1673 transitions. [2023-08-25 21:34:56,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1673 transitions. [2023-08-25 21:34:56,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:34:56,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1673 transitions. [2023-08-25 21:34:56,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 334.6) internal successors, (1673), 5 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:56,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 676.0) internal successors, (4056), 6 states have internal predecessors, (4056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:56,177 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 676.0) internal successors, (4056), 6 states have internal predecessors, (4056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:56,178 INFO L175 Difference]: Start difference. First operand has 86 places, 79 transitions, 229 flow. Second operand 5 states and 1673 transitions. [2023-08-25 21:34:56,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 161 transitions, 729 flow [2023-08-25 21:34:56,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 161 transitions, 718 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 21:34:56,181 INFO L231 Difference]: Finished difference. Result has 89 places, 82 transitions, 260 flow [2023-08-25 21:34:56,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=260, PETRI_PLACES=89, PETRI_TRANSITIONS=82} [2023-08-25 21:34:56,182 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, -22 predicate places. [2023-08-25 21:34:56,182 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 82 transitions, 260 flow [2023-08-25 21:34:56,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 313.2) internal successors, (1566), 5 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:56,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:34:56,182 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, 1, 1, 1] [2023-08-25 21:34:56,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-25 21:34:56,183 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 71 more)] === [2023-08-25 21:34:56,183 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:34:56,183 INFO L85 PathProgramCache]: Analyzing trace with hash -2103358167, now seen corresponding path program 2 times [2023-08-25 21:34:56,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:34:56,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798213044] [2023-08-25 21:34:56,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:34:56,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:34:56,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:34:56,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 21:34:56,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:34:56,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798213044] [2023-08-25 21:34:56,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798213044] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:34:56,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:34:56,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-25 21:34:56,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126823757] [2023-08-25 21:34:56,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:34:56,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 21:34:56,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:34:56,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 21:34:56,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-25 21:34:56,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 676 [2023-08-25 21:34:56,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 82 transitions, 260 flow. Second operand has 4 states, 4 states have (on average 316.75) internal successors, (1267), 4 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:56,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:34:56,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 676 [2023-08-25 21:34:56,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:34:56,801 INFO L124 PetriNetUnfolderBase]: 2602/5471 cut-off events. [2023-08-25 21:34:56,802 INFO L125 PetriNetUnfolderBase]: For 1677/1686 co-relation queries the response was YES. [2023-08-25 21:34:56,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11834 conditions, 5471 events. 2602/5471 cut-off events. For 1677/1686 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 38092 event pairs, 1037 based on Foata normal form. 45/5467 useless extension candidates. Maximal degree in co-relation 11822. Up to 2214 conditions per place. [2023-08-25 21:34:56,831 INFO L140 encePairwiseOnDemand]: 669/676 looper letters, 98 selfloop transitions, 9 changer transitions 0/135 dead transitions. [2023-08-25 21:34:56,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 135 transitions, 647 flow [2023-08-25 21:34:56,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 21:34:56,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 21:34:56,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1345 transitions. [2023-08-25 21:34:56,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4974112426035503 [2023-08-25 21:34:56,834 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1345 transitions. [2023-08-25 21:34:56,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1345 transitions. [2023-08-25 21:34:56,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:34:56,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1345 transitions. [2023-08-25 21:34:56,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 336.25) internal successors, (1345), 4 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:56,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 676.0) internal successors, (3380), 5 states have internal predecessors, (3380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:56,840 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 676.0) internal successors, (3380), 5 states have internal predecessors, (3380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:56,840 INFO L175 Difference]: Start difference. First operand has 89 places, 82 transitions, 260 flow. Second operand 4 states and 1345 transitions. [2023-08-25 21:34:56,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 135 transitions, 647 flow [2023-08-25 21:34:56,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 135 transitions, 639 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 21:34:56,844 INFO L231 Difference]: Finished difference. Result has 92 places, 87 transitions, 318 flow [2023-08-25 21:34:56,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=318, PETRI_PLACES=92, PETRI_TRANSITIONS=87} [2023-08-25 21:34:56,845 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, -19 predicate places. [2023-08-25 21:34:56,845 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 87 transitions, 318 flow [2023-08-25 21:34:56,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 316.75) internal successors, (1267), 4 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:56,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:34:56,845 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:34:56,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-25 21:34:56,846 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 71 more)] === [2023-08-25 21:34:56,846 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:34:56,846 INFO L85 PathProgramCache]: Analyzing trace with hash 488568021, now seen corresponding path program 1 times [2023-08-25 21:34:56,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:34:56,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916385336] [2023-08-25 21:34:56,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:34:56,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:34:56,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:34:57,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 21:34:57,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:34:57,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916385336] [2023-08-25 21:34:57,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916385336] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:34:57,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:34:57,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-25 21:34:57,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076007804] [2023-08-25 21:34:57,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:34:57,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 21:34:57,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:34:57,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 21:34:57,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-08-25 21:34:57,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 676 [2023-08-25 21:34:57,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 87 transitions, 318 flow. Second operand has 6 states, 6 states have (on average 313.5) internal successors, (1881), 6 states have internal predecessors, (1881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:57,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:34:57,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 676 [2023-08-25 21:34:57,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:34:57,688 INFO L124 PetriNetUnfolderBase]: 3081/6684 cut-off events. [2023-08-25 21:34:57,688 INFO L125 PetriNetUnfolderBase]: For 3342/3423 co-relation queries the response was YES. [2023-08-25 21:34:57,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15216 conditions, 6684 events. 3081/6684 cut-off events. For 3342/3423 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 49602 event pairs, 1217 based on Foata normal form. 41/6617 useless extension candidates. Maximal degree in co-relation 15202. Up to 2383 conditions per place. [2023-08-25 21:34:57,726 INFO L140 encePairwiseOnDemand]: 666/676 looper letters, 162 selfloop transitions, 17 changer transitions 2/208 dead transitions. [2023-08-25 21:34:57,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 208 transitions, 1133 flow [2023-08-25 21:34:57,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 21:34:57,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 21:34:57,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2013 transitions. [2023-08-25 21:34:57,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.496301775147929 [2023-08-25 21:34:57,730 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2013 transitions. [2023-08-25 21:34:57,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2013 transitions. [2023-08-25 21:34:57,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:34:57,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2013 transitions. [2023-08-25 21:34:57,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 335.5) internal successors, (2013), 6 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:57,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 676.0) internal successors, (4732), 7 states have internal predecessors, (4732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:57,738 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 676.0) internal successors, (4732), 7 states have internal predecessors, (4732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:57,738 INFO L175 Difference]: Start difference. First operand has 92 places, 87 transitions, 318 flow. Second operand 6 states and 2013 transitions. [2023-08-25 21:34:57,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 208 transitions, 1133 flow [2023-08-25 21:34:57,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 208 transitions, 1133 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 21:34:57,746 INFO L231 Difference]: Finished difference. Result has 101 places, 100 transitions, 494 flow [2023-08-25 21:34:57,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=494, PETRI_PLACES=101, PETRI_TRANSITIONS=100} [2023-08-25 21:34:57,747 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, -10 predicate places. [2023-08-25 21:34:57,747 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 100 transitions, 494 flow [2023-08-25 21:34:57,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 313.5) internal successors, (1881), 6 states have internal predecessors, (1881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:57,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:34:57,747 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:34:57,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-25 21:34:57,748 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 71 more)] === [2023-08-25 21:34:57,748 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:34:57,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1046467861, now seen corresponding path program 2 times [2023-08-25 21:34:57,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:34:57,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683227817] [2023-08-25 21:34:57,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:34:57,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:34:57,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:34:57,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 21:34:57,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:34:57,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683227817] [2023-08-25 21:34:57,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683227817] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:34:57,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:34:57,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-25 21:34:57,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120880401] [2023-08-25 21:34:57,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:34:57,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 21:34:57,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:34:57,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 21:34:57,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-25 21:34:57,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 676 [2023-08-25 21:34:57,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 100 transitions, 494 flow. Second operand has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:57,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:34:57,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 676 [2023-08-25 21:34:57,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:34:58,584 INFO L124 PetriNetUnfolderBase]: 3247/6856 cut-off events. [2023-08-25 21:34:58,584 INFO L125 PetriNetUnfolderBase]: For 7018/7069 co-relation queries the response was YES. [2023-08-25 21:34:58,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17132 conditions, 6856 events. 3247/6856 cut-off events. For 7018/7069 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 50416 event pairs, 1155 based on Foata normal form. 47/6842 useless extension candidates. Maximal degree in co-relation 17113. Up to 2411 conditions per place. [2023-08-25 21:34:58,618 INFO L140 encePairwiseOnDemand]: 667/676 looper letters, 143 selfloop transitions, 23 changer transitions 1/194 dead transitions. [2023-08-25 21:34:58,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 194 transitions, 1204 flow [2023-08-25 21:34:58,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-25 21:34:58,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-25 21:34:58,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2301 transitions. [2023-08-25 21:34:58,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48626373626373626 [2023-08-25 21:34:58,622 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2301 transitions. [2023-08-25 21:34:58,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2301 transitions. [2023-08-25 21:34:58,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:34:58,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2301 transitions. [2023-08-25 21:34:58,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 328.7142857142857) internal successors, (2301), 7 states have internal predecessors, (2301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:58,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 676.0) internal successors, (5408), 8 states have internal predecessors, (5408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:58,630 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 676.0) internal successors, (5408), 8 states have internal predecessors, (5408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:58,630 INFO L175 Difference]: Start difference. First operand has 101 places, 100 transitions, 494 flow. Second operand 7 states and 2301 transitions. [2023-08-25 21:34:58,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 194 transitions, 1204 flow [2023-08-25 21:34:58,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 194 transitions, 1204 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 21:34:58,642 INFO L231 Difference]: Finished difference. Result has 111 places, 105 transitions, 609 flow [2023-08-25 21:34:58,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=609, PETRI_PLACES=111, PETRI_TRANSITIONS=105} [2023-08-25 21:34:58,643 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, 0 predicate places. [2023-08-25 21:34:58,643 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 105 transitions, 609 flow [2023-08-25 21:34:58,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:58,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:34:58,644 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:34:58,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-25 21:34:58,644 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 71 more)] === [2023-08-25 21:34:58,644 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:34:58,644 INFO L85 PathProgramCache]: Analyzing trace with hash 400785651, now seen corresponding path program 3 times [2023-08-25 21:34:58,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:34:58,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779718596] [2023-08-25 21:34:58,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:34:58,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:34:58,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:34:58,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 21:34:58,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:34:58,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779718596] [2023-08-25 21:34:58,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779718596] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:34:58,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:34:58,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-25 21:34:58,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023071722] [2023-08-25 21:34:58,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:34:58,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 21:34:58,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:34:58,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 21:34:58,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-25 21:34:58,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 676 [2023-08-25 21:34:58,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 105 transitions, 609 flow. Second operand has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:58,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:34:58,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 676 [2023-08-25 21:34:58,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:34:59,528 INFO L124 PetriNetUnfolderBase]: 3261/7002 cut-off events. [2023-08-25 21:34:59,529 INFO L125 PetriNetUnfolderBase]: For 11466/11528 co-relation queries the response was YES. [2023-08-25 21:34:59,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18323 conditions, 7002 events. 3261/7002 cut-off events. For 11466/11528 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 52564 event pairs, 582 based on Foata normal form. 42/6949 useless extension candidates. Maximal degree in co-relation 18299. Up to 1970 conditions per place. [2023-08-25 21:34:59,554 INFO L140 encePairwiseOnDemand]: 666/676 looper letters, 160 selfloop transitions, 31 changer transitions 1/219 dead transitions. [2023-08-25 21:34:59,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 219 transitions, 1471 flow [2023-08-25 21:34:59,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-25 21:34:59,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-25 21:34:59,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2637 transitions. [2023-08-25 21:34:59,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48761094674556216 [2023-08-25 21:34:59,558 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2637 transitions. [2023-08-25 21:34:59,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2637 transitions. [2023-08-25 21:34:59,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:34:59,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2637 transitions. [2023-08-25 21:34:59,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 329.625) internal successors, (2637), 8 states have internal predecessors, (2637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:59,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 676.0) internal successors, (6084), 9 states have internal predecessors, (6084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:59,567 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 676.0) internal successors, (6084), 9 states have internal predecessors, (6084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:59,567 INFO L175 Difference]: Start difference. First operand has 111 places, 105 transitions, 609 flow. Second operand 8 states and 2637 transitions. [2023-08-25 21:34:59,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 219 transitions, 1471 flow [2023-08-25 21:34:59,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 219 transitions, 1419 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-25 21:34:59,585 INFO L231 Difference]: Finished difference. Result has 118 places, 114 transitions, 754 flow [2023-08-25 21:34:59,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=754, PETRI_PLACES=118, PETRI_TRANSITIONS=114} [2023-08-25 21:34:59,585 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, 7 predicate places. [2023-08-25 21:34:59,586 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 114 transitions, 754 flow [2023-08-25 21:34:59,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:34:59,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:34:59,586 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:34:59,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-25 21:34:59,586 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 71 more)] === [2023-08-25 21:34:59,587 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:34:59,587 INFO L85 PathProgramCache]: Analyzing trace with hash 195590047, now seen corresponding path program 1 times [2023-08-25 21:34:59,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:34:59,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944232668] [2023-08-25 21:34:59,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:34:59,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:34:59,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:34:59,764 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 21:34:59,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:34:59,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944232668] [2023-08-25 21:34:59,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944232668] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:34:59,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84127257] [2023-08-25 21:34:59,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:34:59,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:34:59,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:34:59,767 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) [2023-08-25 21:34:59,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-25 21:34:59,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:34:59,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 47 conjunts are in the unsatisfiable core [2023-08-25 21:34:59,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:34:59,991 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-25 21:35:00,025 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-25 21:35:00,069 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-25 21:35:00,369 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-25 21:35:00,369 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 18 [2023-08-25 21:35:00,438 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:35:00,438 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:35:00,870 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 21:35:00,870 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 114 treesize of output 78 [2023-08-25 21:35:00,885 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 21:35:00,885 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 488 treesize of output 444 [2023-08-25 21:35:00,907 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 21:35:00,907 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 84 [2023-08-25 21:35:01,045 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 21:35:01,046 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 81 [2023-08-25 21:35:01,185 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:35:01,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84127257] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:35:01,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:35:01,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 30 [2023-08-25 21:35:01,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071368093] [2023-08-25 21:35:01,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:35:01,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-25 21:35:01,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:35:01,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-25 21:35:01,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=764, Unknown=3, NotChecked=0, Total=870 [2023-08-25 21:35:01,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 676 [2023-08-25 21:35:01,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 114 transitions, 754 flow. Second operand has 30 states, 30 states have (on average 206.3) internal successors, (6189), 30 states have internal predecessors, (6189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:35:01,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:35:01,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 676 [2023-08-25 21:35:01,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:35:12,031 INFO L124 PetriNetUnfolderBase]: 47704/75868 cut-off events. [2023-08-25 21:35:12,032 INFO L125 PetriNetUnfolderBase]: For 110319/110417 co-relation queries the response was YES. [2023-08-25 21:35:12,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206052 conditions, 75868 events. 47704/75868 cut-off events. For 110319/110417 co-relation queries the response was YES. Maximal size of possible extension queue 962. Compared 559960 event pairs, 5304 based on Foata normal form. 251/76065 useless extension candidates. Maximal degree in co-relation 206026. Up to 16519 conditions per place. [2023-08-25 21:35:12,698 INFO L140 encePairwiseOnDemand]: 653/676 looper letters, 1026 selfloop transitions, 143 changer transitions 262/1436 dead transitions. [2023-08-25 21:35:12,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 1436 transitions, 8310 flow [2023-08-25 21:35:12,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-08-25 21:35:12,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2023-08-25 21:35:12,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 13684 transitions. [2023-08-25 21:35:12,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3318459598409157 [2023-08-25 21:35:12,713 INFO L72 ComplementDD]: Start complementDD. Operand 61 states and 13684 transitions. [2023-08-25 21:35:12,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 13684 transitions. [2023-08-25 21:35:12,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:35:12,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 61 states and 13684 transitions. [2023-08-25 21:35:12,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 62 states, 61 states have (on average 224.327868852459) internal successors, (13684), 61 states have internal predecessors, (13684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:35:12,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 62 states, 62 states have (on average 676.0) internal successors, (41912), 62 states have internal predecessors, (41912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:35:12,769 INFO L81 ComplementDD]: Finished complementDD. Result has 62 states, 62 states have (on average 676.0) internal successors, (41912), 62 states have internal predecessors, (41912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:35:12,769 INFO L175 Difference]: Start difference. First operand has 118 places, 114 transitions, 754 flow. Second operand 61 states and 13684 transitions. [2023-08-25 21:35:12,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 1436 transitions, 8310 flow [2023-08-25 21:35:13,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 1436 transitions, 8151 flow, removed 64 selfloop flow, removed 2 redundant places. [2023-08-25 21:35:13,182 INFO L231 Difference]: Finished difference. Result has 202 places, 243 transitions, 2247 flow [2023-08-25 21:35:13,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=725, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=2247, PETRI_PLACES=202, PETRI_TRANSITIONS=243} [2023-08-25 21:35:13,182 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, 91 predicate places. [2023-08-25 21:35:13,182 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 243 transitions, 2247 flow [2023-08-25 21:35:13,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 206.3) internal successors, (6189), 30 states have internal predecessors, (6189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:35:13,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:35:13,184 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:35:13,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-25 21:35:13,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-25 21:35:13,391 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 71 more)] === [2023-08-25 21:35:13,391 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:35:13,391 INFO L85 PathProgramCache]: Analyzing trace with hash 739369799, now seen corresponding path program 2 times [2023-08-25 21:35:13,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:35:13,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226341291] [2023-08-25 21:35:13,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:35:13,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:35:13,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:35:13,687 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 21:35:13,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:35:13,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226341291] [2023-08-25 21:35:13,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226341291] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:35:13,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098309457] [2023-08-25 21:35:13,687 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 21:35:13,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:35:13,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:35:13,701 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) [2023-08-25 21:35:13,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-25 21:35:14,129 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 21:35:14,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:35:14,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-25 21:35:14,134 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:35:14,293 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 21:35:14,293 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:35:14,570 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 21:35:14,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098309457] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:35:14,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:35:14,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2023-08-25 21:35:14,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700580131] [2023-08-25 21:35:14,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:35:14,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-25 21:35:14,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:35:14,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-25 21:35:14,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2023-08-25 21:35:14,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 676 [2023-08-25 21:35:14,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 243 transitions, 2247 flow. Second operand has 15 states, 15 states have (on average 313.3333333333333) internal successors, (4700), 15 states have internal predecessors, (4700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:35:14,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:35:14,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 676 [2023-08-25 21:35:14,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:35:18,610 INFO L124 PetriNetUnfolderBase]: 9401/20795 cut-off events. [2023-08-25 21:35:18,610 INFO L125 PetriNetUnfolderBase]: For 51675/51980 co-relation queries the response was YES. [2023-08-25 21:35:18,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62007 conditions, 20795 events. 9401/20795 cut-off events. For 51675/51980 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 188583 event pairs, 1059 based on Foata normal form. 155/20644 useless extension candidates. Maximal degree in co-relation 61954. Up to 3018 conditions per place. [2023-08-25 21:35:18,820 INFO L140 encePairwiseOnDemand]: 661/676 looper letters, 496 selfloop transitions, 213 changer transitions 0/736 dead transitions. [2023-08-25 21:35:18,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 736 transitions, 6829 flow [2023-08-25 21:35:18,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-25 21:35:18,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-25 21:35:18,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 9087 transitions. [2023-08-25 21:35:18,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4800824175824176 [2023-08-25 21:35:18,829 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 9087 transitions. [2023-08-25 21:35:18,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 9087 transitions. [2023-08-25 21:35:18,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:35:18,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 9087 transitions. [2023-08-25 21:35:18,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 324.5357142857143) internal successors, (9087), 28 states have internal predecessors, (9087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:35:18,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 676.0) internal successors, (19604), 29 states have internal predecessors, (19604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:35:18,853 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 676.0) internal successors, (19604), 29 states have internal predecessors, (19604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:35:18,854 INFO L175 Difference]: Start difference. First operand has 202 places, 243 transitions, 2247 flow. Second operand 28 states and 9087 transitions. [2023-08-25 21:35:18,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 736 transitions, 6829 flow [2023-08-25 21:35:19,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 736 transitions, 6357 flow, removed 235 selfloop flow, removed 6 redundant places. [2023-08-25 21:35:19,160 INFO L231 Difference]: Finished difference. Result has 229 places, 410 transitions, 4494 flow [2023-08-25 21:35:19,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=2023, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=4494, PETRI_PLACES=229, PETRI_TRANSITIONS=410} [2023-08-25 21:35:19,161 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, 118 predicate places. [2023-08-25 21:35:19,161 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 410 transitions, 4494 flow [2023-08-25 21:35:19,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 313.3333333333333) internal successors, (4700), 15 states have internal predecessors, (4700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:35:19,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:35:19,162 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:35:19,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-25 21:35:19,368 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,SelfDestructingSolverStorable17 [2023-08-25 21:35:19,369 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 71 more)] === [2023-08-25 21:35:19,369 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:35:19,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1288072938, now seen corresponding path program 1 times [2023-08-25 21:35:19,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:35:19,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74369162] [2023-08-25 21:35:19,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:35:19,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:35:19,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:35:19,740 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 21:35:19,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:35:19,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74369162] [2023-08-25 21:35:19,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74369162] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:35:19,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673799433] [2023-08-25 21:35:19,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:35:19,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:35:19,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:35:19,742 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) [2023-08-25 21:35:19,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-25 21:35:19,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:35:19,867 INFO L262 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-25 21:35:19,868 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:35:20,175 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-25 21:35:20,177 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 21:35:20,177 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2023-08-25 21:35:20,206 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 21:35:20,206 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:35:20,280 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-25 21:35:20,281 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2023-08-25 21:35:20,299 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 21:35:20,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673799433] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:35:20,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:35:20,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 4] total 10 [2023-08-25 21:35:20,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104445224] [2023-08-25 21:35:20,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:35:20,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-25 21:35:20,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:35:20,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-25 21:35:20,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-08-25 21:35:20,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 676 [2023-08-25 21:35:20,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 410 transitions, 4494 flow. Second operand has 12 states, 12 states have (on average 271.0833333333333) internal successors, (3253), 12 states have internal predecessors, (3253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:35:20,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:35:20,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 676 [2023-08-25 21:35:20,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:35:27,489 INFO L124 PetriNetUnfolderBase]: 24212/42473 cut-off events. [2023-08-25 21:35:27,490 INFO L125 PetriNetUnfolderBase]: For 97795/98341 co-relation queries the response was YES. [2023-08-25 21:35:27,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128764 conditions, 42473 events. 24212/42473 cut-off events. For 97795/98341 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 336976 event pairs, 6743 based on Foata normal form. 462/42768 useless extension candidates. Maximal degree in co-relation 128700. Up to 26094 conditions per place. [2023-08-25 21:35:28,134 INFO L140 encePairwiseOnDemand]: 668/676 looper letters, 490 selfloop transitions, 97 changer transitions 7/645 dead transitions. [2023-08-25 21:35:28,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 645 transitions, 7214 flow [2023-08-25 21:35:28,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-25 21:35:28,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-25 21:35:28,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2611 transitions. [2023-08-25 21:35:28,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42915844838921763 [2023-08-25 21:35:28,138 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2611 transitions. [2023-08-25 21:35:28,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2611 transitions. [2023-08-25 21:35:28,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:35:28,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2611 transitions. [2023-08-25 21:35:28,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 290.1111111111111) internal successors, (2611), 9 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:35:28,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 676.0) internal successors, (6760), 10 states have internal predecessors, (6760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:35:28,146 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 676.0) internal successors, (6760), 10 states have internal predecessors, (6760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:35:28,146 INFO L175 Difference]: Start difference. First operand has 229 places, 410 transitions, 4494 flow. Second operand 9 states and 2611 transitions. [2023-08-25 21:35:28,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 645 transitions, 7214 flow [2023-08-25 21:35:28,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 645 transitions, 6873 flow, removed 139 selfloop flow, removed 1 redundant places. [2023-08-25 21:35:28,975 INFO L231 Difference]: Finished difference. Result has 240 places, 463 transitions, 5186 flow [2023-08-25 21:35:28,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=4240, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5186, PETRI_PLACES=240, PETRI_TRANSITIONS=463} [2023-08-25 21:35:28,976 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, 129 predicate places. [2023-08-25 21:35:28,976 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 463 transitions, 5186 flow [2023-08-25 21:35:28,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 271.0833333333333) internal successors, (3253), 12 states have internal predecessors, (3253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:35:28,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:35:28,977 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:35:28,986 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-25 21:35:29,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:35:29,185 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 71 more)] === [2023-08-25 21:35:29,185 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:35:29,185 INFO L85 PathProgramCache]: Analyzing trace with hash -246828651, now seen corresponding path program 3 times [2023-08-25 21:35:29,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:35:29,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252874725] [2023-08-25 21:35:29,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:35:29,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:35:29,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:35:29,444 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 21:35:29,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:35:29,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252874725] [2023-08-25 21:35:29,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252874725] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:35:29,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311946166] [2023-08-25 21:35:29,444 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 21:35:29,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:35:29,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:35:29,446 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) [2023-08-25 21:35:29,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-25 21:35:29,968 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-25 21:35:29,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:35:29,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-25 21:35:29,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:35:30,149 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 21:35:30,150 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:35:30,382 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 21:35:30,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311946166] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:35:30,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:35:30,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 14 [2023-08-25 21:35:30,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491010501] [2023-08-25 21:35:30,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:35:30,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-25 21:35:30,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:35:30,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-25 21:35:30,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-08-25 21:35:30,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 676 [2023-08-25 21:35:30,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 463 transitions, 5186 flow. Second operand has 14 states, 14 states have (on average 313.64285714285717) internal successors, (4391), 14 states have internal predecessors, (4391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:35:30,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:35:30,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 676 [2023-08-25 21:35:30,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:35:36,942 INFO L124 PetriNetUnfolderBase]: 13492/29966 cut-off events. [2023-08-25 21:35:36,943 INFO L125 PetriNetUnfolderBase]: For 97350/98571 co-relation queries the response was YES. [2023-08-25 21:35:37,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95417 conditions, 29966 events. 13492/29966 cut-off events. For 97350/98571 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 283540 event pairs, 1886 based on Foata normal form. 309/29941 useless extension candidates. Maximal degree in co-relation 95349. Up to 4262 conditions per place. [2023-08-25 21:35:37,429 INFO L140 encePairwiseOnDemand]: 666/676 looper letters, 528 selfloop transitions, 361 changer transitions 2/918 dead transitions. [2023-08-25 21:35:37,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 918 transitions, 9958 flow [2023-08-25 21:35:37,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-25 21:35:37,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-25 21:35:37,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 8481 transitions. [2023-08-25 21:35:37,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48253299954483386 [2023-08-25 21:35:37,437 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 8481 transitions. [2023-08-25 21:35:37,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 8481 transitions. [2023-08-25 21:35:37,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:35:37,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 8481 transitions. [2023-08-25 21:35:37,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 326.1923076923077) internal successors, (8481), 26 states have internal predecessors, (8481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:35:37,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 676.0) internal successors, (18252), 27 states have internal predecessors, (18252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:35:37,457 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 676.0) internal successors, (18252), 27 states have internal predecessors, (18252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:35:37,457 INFO L175 Difference]: Start difference. First operand has 240 places, 463 transitions, 5186 flow. Second operand 26 states and 8481 transitions. [2023-08-25 21:35:37,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 918 transitions, 9958 flow [2023-08-25 21:35:38,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 918 transitions, 9862 flow, removed 48 selfloop flow, removed 0 redundant places. [2023-08-25 21:35:38,195 INFO L231 Difference]: Finished difference. Result has 273 places, 579 transitions, 7596 flow [2023-08-25 21:35:38,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=5116, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=255, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=7596, PETRI_PLACES=273, PETRI_TRANSITIONS=579} [2023-08-25 21:35:38,196 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, 162 predicate places. [2023-08-25 21:35:38,196 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 579 transitions, 7596 flow [2023-08-25 21:35:38,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 313.64285714285717) internal successors, (4391), 14 states have internal predecessors, (4391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:35:38,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:35:38,197 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:35:38,211 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-25 21:35:38,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:35:38,411 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 71 more)] === [2023-08-25 21:35:38,411 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:35:38,411 INFO L85 PathProgramCache]: Analyzing trace with hash 235314219, now seen corresponding path program 4 times [2023-08-25 21:35:38,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:35:38,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750690722] [2023-08-25 21:35:38,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:35:38,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:35:38,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:35:38,643 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 21:35:38,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:35:38,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750690722] [2023-08-25 21:35:38,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750690722] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:35:38,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278198444] [2023-08-25 21:35:38,643 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 21:35:38,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:35:38,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:35:38,666 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) [2023-08-25 21:35:38,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-25 21:35:39,230 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 21:35:39,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:35:39,233 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-25 21:35:39,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:35:39,347 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 21:35:39,347 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:35:39,487 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 21:35:39,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278198444] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:35:39,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:35:39,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 14 [2023-08-25 21:35:39,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819254311] [2023-08-25 21:35:39,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:35:39,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-25 21:35:39,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:35:39,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-25 21:35:39,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2023-08-25 21:35:39,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 676 [2023-08-25 21:35:39,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 579 transitions, 7596 flow. Second operand has 14 states, 14 states have (on average 313.64285714285717) internal successors, (4391), 14 states have internal predecessors, (4391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:35:39,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:35:39,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 676 [2023-08-25 21:35:39,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:35:46,425 INFO L124 PetriNetUnfolderBase]: 13810/30945 cut-off events. [2023-08-25 21:35:46,425 INFO L125 PetriNetUnfolderBase]: For 134177/135640 co-relation queries the response was YES. [2023-08-25 21:35:46,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103804 conditions, 30945 events. 13810/30945 cut-off events. For 134177/135640 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 296123 event pairs, 1957 based on Foata normal form. 394/31001 useless extension candidates. Maximal degree in co-relation 103727. Up to 4362 conditions per place. [2023-08-25 21:35:47,237 INFO L140 encePairwiseOnDemand]: 664/676 looper letters, 511 selfloop transitions, 394 changer transitions 4/936 dead transitions. [2023-08-25 21:35:47,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 936 transitions, 11700 flow [2023-08-25 21:35:47,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-25 21:35:47,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-25 21:35:47,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 8737 transitions. [2023-08-25 21:35:47,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4786872671488056 [2023-08-25 21:35:47,249 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 8737 transitions. [2023-08-25 21:35:47,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 8737 transitions. [2023-08-25 21:35:47,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:35:47,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 8737 transitions. [2023-08-25 21:35:47,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 323.5925925925926) internal successors, (8737), 27 states have internal predecessors, (8737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:35:47,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 676.0) internal successors, (18928), 28 states have internal predecessors, (18928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:35:47,291 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 676.0) internal successors, (18928), 28 states have internal predecessors, (18928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:35:47,291 INFO L175 Difference]: Start difference. First operand has 273 places, 579 transitions, 7596 flow. Second operand 27 states and 8737 transitions. [2023-08-25 21:35:47,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 936 transitions, 11700 flow [2023-08-25 21:35:48,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 936 transitions, 11426 flow, removed 96 selfloop flow, removed 6 redundant places. [2023-08-25 21:35:48,226 INFO L231 Difference]: Finished difference. Result has 304 places, 622 transitions, 9164 flow [2023-08-25 21:35:48,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=7358, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=579, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=353, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=9164, PETRI_PLACES=304, PETRI_TRANSITIONS=622} [2023-08-25 21:35:48,227 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, 193 predicate places. [2023-08-25 21:35:48,227 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 622 transitions, 9164 flow [2023-08-25 21:35:48,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 313.64285714285717) internal successors, (4391), 14 states have internal predecessors, (4391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:35:48,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:35:48,228 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:35:48,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-25 21:35:48,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:35:48,433 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 71 more)] === [2023-08-25 21:35:48,433 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:35:48,434 INFO L85 PathProgramCache]: Analyzing trace with hash 249706173, now seen corresponding path program 5 times [2023-08-25 21:35:48,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:35:48,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226153174] [2023-08-25 21:35:48,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:35:48,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:35:48,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:35:48,723 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 21:35:48,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:35:48,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226153174] [2023-08-25 21:35:48,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226153174] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:35:48,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86854904] [2023-08-25 21:35:48,725 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 21:35:48,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:35:48,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:35:48,726 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) [2023-08-25 21:35:48,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-25 21:35:49,349 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 21:35:49,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:35:49,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-25 21:35:49,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:35:49,558 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 21:35:49,558 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:35:49,985 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 21:35:49,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86854904] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:35:49,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:35:49,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2023-08-25 21:35:49,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392059637] [2023-08-25 21:35:49,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:35:49,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-25 21:35:49,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:35:49,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-25 21:35:49,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2023-08-25 21:35:49,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 676 [2023-08-25 21:35:49,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 622 transitions, 9164 flow. Second operand has 16 states, 16 states have (on average 313.3125) internal successors, (5013), 16 states have internal predecessors, (5013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:35:49,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:35:49,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 676 [2023-08-25 21:35:49,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:36:01,371 INFO L124 PetriNetUnfolderBase]: 21776/48047 cut-off events. [2023-08-25 21:36:01,372 INFO L125 PetriNetUnfolderBase]: For 247798/250259 co-relation queries the response was YES. [2023-08-25 21:36:02,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167753 conditions, 48047 events. 21776/48047 cut-off events. For 247798/250259 co-relation queries the response was YES. Maximal size of possible extension queue 985. Compared 487592 event pairs, 2770 based on Foata normal form. 547/48099 useless extension candidates. Maximal degree in co-relation 167668. Up to 6817 conditions per place. [2023-08-25 21:36:02,438 INFO L140 encePairwiseOnDemand]: 661/676 looper letters, 834 selfloop transitions, 698 changer transitions 0/1559 dead transitions. [2023-08-25 21:36:02,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 1559 transitions, 19887 flow [2023-08-25 21:36:02,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-08-25 21:36:02,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-08-25 21:36:02,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 13196 transitions. [2023-08-25 21:36:02,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48801775147928994 [2023-08-25 21:36:02,449 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 13196 transitions. [2023-08-25 21:36:02,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 13196 transitions. [2023-08-25 21:36:02,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:36:02,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 13196 transitions. [2023-08-25 21:36:02,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 329.9) internal successors, (13196), 40 states have internal predecessors, (13196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:36:02,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 676.0) internal successors, (27716), 41 states have internal predecessors, (27716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:36:02,483 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 676.0) internal successors, (27716), 41 states have internal predecessors, (27716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:36:02,483 INFO L175 Difference]: Start difference. First operand has 304 places, 622 transitions, 9164 flow. Second operand 40 states and 13196 transitions. [2023-08-25 21:36:02,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 1559 transitions, 19887 flow [2023-08-25 21:36:05,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 1559 transitions, 19112 flow, removed 131 selfloop flow, removed 9 redundant places. [2023-08-25 21:36:05,023 INFO L231 Difference]: Finished difference. Result has 353 places, 944 transitions, 15685 flow [2023-08-25 21:36:05,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=8728, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=622, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=420, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=15685, PETRI_PLACES=353, PETRI_TRANSITIONS=944} [2023-08-25 21:36:05,024 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, 242 predicate places. [2023-08-25 21:36:05,024 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 944 transitions, 15685 flow [2023-08-25 21:36:05,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 313.3125) internal successors, (5013), 16 states have internal predecessors, (5013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:36:05,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:36:05,025 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:36:05,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-25 21:36:05,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:36:05,227 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 71 more)] === [2023-08-25 21:36:05,227 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:36:05,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1930760443, now seen corresponding path program 6 times [2023-08-25 21:36:05,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:36:05,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147148056] [2023-08-25 21:36:05,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:36:05,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:36:05,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:36:05,488 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 21:36:05,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:36:05,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147148056] [2023-08-25 21:36:05,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147148056] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:36:05,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745524219] [2023-08-25 21:36:05,489 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 21:36:05,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:36:05,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:36:05,497 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) [2023-08-25 21:36:05,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-25 21:36:05,781 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-25 21:36:05,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:36:05,783 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-25 21:36:05,784 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:36:05,922 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 21:36:05,922 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:36:06,117 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 21:36:06,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745524219] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:36:06,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:36:06,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-08-25 21:36:06,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742186311] [2023-08-25 21:36:06,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:36:06,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-25 21:36:06,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:36:06,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-25 21:36:06,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2023-08-25 21:36:06,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 676 [2023-08-25 21:36:06,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 944 transitions, 15685 flow. Second operand has 18 states, 18 states have (on average 313.5) internal successors, (5643), 18 states have internal predecessors, (5643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:36:06,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:36:06,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 676 [2023-08-25 21:36:06,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:36:18,422 INFO L124 PetriNetUnfolderBase]: 22041/48710 cut-off events. [2023-08-25 21:36:18,422 INFO L125 PetriNetUnfolderBase]: For 316988/319300 co-relation queries the response was YES. [2023-08-25 21:36:19,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179318 conditions, 48710 events. 22041/48710 cut-off events. For 316988/319300 co-relation queries the response was YES. Maximal size of possible extension queue 991. Compared 493874 event pairs, 5138 based on Foata normal form. 598/48720 useless extension candidates. Maximal degree in co-relation 179218. Up to 7133 conditions per place. [2023-08-25 21:36:19,477 INFO L140 encePairwiseOnDemand]: 662/676 looper letters, 841 selfloop transitions, 583 changer transitions 0/1451 dead transitions. [2023-08-25 21:36:19,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 1451 transitions, 22069 flow [2023-08-25 21:36:19,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-08-25 21:36:19,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-08-25 21:36:19,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 10148 transitions. [2023-08-25 21:36:19,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4842527199847299 [2023-08-25 21:36:19,483 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 10148 transitions. [2023-08-25 21:36:19,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 10148 transitions. [2023-08-25 21:36:19,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:36:19,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 10148 transitions. [2023-08-25 21:36:19,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 327.35483870967744) internal successors, (10148), 31 states have internal predecessors, (10148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:36:19,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 676.0) internal successors, (21632), 32 states have internal predecessors, (21632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:36:19,499 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 676.0) internal successors, (21632), 32 states have internal predecessors, (21632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:36:19,499 INFO L175 Difference]: Start difference. First operand has 353 places, 944 transitions, 15685 flow. Second operand 31 states and 10148 transitions. [2023-08-25 21:36:19,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 1451 transitions, 22069 flow [2023-08-25 21:36:22,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 1451 transitions, 21380 flow, removed 297 selfloop flow, removed 6 redundant places. [2023-08-25 21:36:22,953 INFO L231 Difference]: Finished difference. Result has 389 places, 998 transitions, 17913 flow [2023-08-25 21:36:22,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=14858, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=929, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=518, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=17913, PETRI_PLACES=389, PETRI_TRANSITIONS=998} [2023-08-25 21:36:22,954 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, 278 predicate places. [2023-08-25 21:36:22,954 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 998 transitions, 17913 flow [2023-08-25 21:36:22,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 313.5) internal successors, (5643), 18 states have internal predecessors, (5643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:36:22,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:36:22,955 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:36:22,960 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-25 21:36:23,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:36:23,157 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 71 more)] === [2023-08-25 21:36:23,157 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:36:23,157 INFO L85 PathProgramCache]: Analyzing trace with hash 2019291027, now seen corresponding path program 7 times [2023-08-25 21:36:23,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:36:23,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540390928] [2023-08-25 21:36:23,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:36:23,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:36:23,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:36:23,383 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 21:36:23,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:36:23,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540390928] [2023-08-25 21:36:23,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540390928] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:36:23,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906035982] [2023-08-25 21:36:23,384 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 21:36:23,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:36:23,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:36:23,398 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) [2023-08-25 21:36:23,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-25 21:36:24,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:36:24,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 48 conjunts are in the unsatisfiable core [2023-08-25 21:36:24,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:36:24,704 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 21:36:24,704 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 23 [2023-08-25 21:36:24,763 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:36:24,764 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:36:25,086 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 21:36:25,086 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 30 [2023-08-25 21:36:25,462 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 21:36:25,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906035982] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:36:25,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:36:25,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 16, 13] total 35 [2023-08-25 21:36:25,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025585372] [2023-08-25 21:36:25,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:36:25,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-08-25 21:36:25,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:36:25,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-08-25 21:36:25,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=939, Unknown=0, NotChecked=0, Total=1190 [2023-08-25 21:36:25,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 676 [2023-08-25 21:36:25,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 998 transitions, 17913 flow. Second operand has 35 states, 35 states have (on average 223.74285714285713) internal successors, (7831), 35 states have internal predecessors, (7831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:36:25,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:36:25,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 676 [2023-08-25 21:36:25,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:37:11,989 INFO L124 PetriNetUnfolderBase]: 76214/133004 cut-off events. [2023-08-25 21:37:11,990 INFO L125 PetriNetUnfolderBase]: For 725095/725217 co-relation queries the response was YES. [2023-08-25 21:37:14,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 471725 conditions, 133004 events. 76214/133004 cut-off events. For 725095/725217 co-relation queries the response was YES. Maximal size of possible extension queue 2069. Compared 1204737 event pairs, 5524 based on Foata normal form. 79/132503 useless extension candidates. Maximal degree in co-relation 471614. Up to 24462 conditions per place. [2023-08-25 21:37:15,512 INFO L140 encePairwiseOnDemand]: 647/676 looper letters, 1877 selfloop transitions, 1268 changer transitions 4/3162 dead transitions. [2023-08-25 21:37:15,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 3162 transitions, 40683 flow [2023-08-25 21:37:15,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2023-08-25 21:37:15,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2023-08-25 21:37:15,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 25936 transitions. [2023-08-25 21:37:15,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519895771130775 [2023-08-25 21:37:15,527 INFO L72 ComplementDD]: Start complementDD. Operand 109 states and 25936 transitions. [2023-08-25 21:37:15,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 109 states and 25936 transitions. [2023-08-25 21:37:15,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:37:15,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 109 states and 25936 transitions. [2023-08-25 21:37:15,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 110 states, 109 states have (on average 237.94495412844037) internal successors, (25936), 109 states have internal predecessors, (25936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:37:15,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 110 states, 110 states have (on average 676.0) internal successors, (74360), 110 states have internal predecessors, (74360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:37:15,588 INFO L81 ComplementDD]: Finished complementDD. Result has 110 states, 110 states have (on average 676.0) internal successors, (74360), 110 states have internal predecessors, (74360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:37:15,589 INFO L175 Difference]: Start difference. First operand has 389 places, 998 transitions, 17913 flow. Second operand 109 states and 25936 transitions. [2023-08-25 21:37:15,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 3162 transitions, 40683 flow [2023-08-25 21:37:34,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 3162 transitions, 40033 flow, removed 67 selfloop flow, removed 6 redundant places. [2023-08-25 21:37:34,252 INFO L231 Difference]: Finished difference. Result has 545 places, 1628 transitions, 32535 flow [2023-08-25 21:37:34,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=17486, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=998, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=665, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=109, PETRI_FLOW=32535, PETRI_PLACES=545, PETRI_TRANSITIONS=1628} [2023-08-25 21:37:34,253 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, 434 predicate places. [2023-08-25 21:37:34,253 INFO L495 AbstractCegarLoop]: Abstraction has has 545 places, 1628 transitions, 32535 flow [2023-08-25 21:37:34,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 223.74285714285713) internal successors, (7831), 35 states have internal predecessors, (7831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:37:34,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:37:34,254 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:37:34,259 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-25 21:37:34,458 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,SelfDestructingSolverStorable23 [2023-08-25 21:37:34,458 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 71 more)] === [2023-08-25 21:37:34,459 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:37:34,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1358415123, now seen corresponding path program 8 times [2023-08-25 21:37:34,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:37:34,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996589192] [2023-08-25 21:37:34,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:37:34,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:37:34,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:37:34,630 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 21:37:34,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:37:34,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996589192] [2023-08-25 21:37:34,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996589192] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:37:34,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680207920] [2023-08-25 21:37:34,631 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 21:37:34,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:37:34,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:37:34,645 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) [2023-08-25 21:37:34,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-25 21:37:35,326 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 21:37:35,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:37:35,329 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-25 21:37:35,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:37:35,454 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 21:37:35,455 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:37:35,689 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 21:37:35,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680207920] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:37:35,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:37:35,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-08-25 21:37:35,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308630204] [2023-08-25 21:37:35,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:37:35,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-25 21:37:35,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:37:35,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-25 21:37:35,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-08-25 21:37:35,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 676 [2023-08-25 21:37:35,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 1628 transitions, 32535 flow. Second operand has 18 states, 18 states have (on average 313.5) internal successors, (5643), 18 states have internal predecessors, (5643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:37:35,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:37:35,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 676 [2023-08-25 21:37:35,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:38:09,160 INFO L124 PetriNetUnfolderBase]: 41600/90432 cut-off events. [2023-08-25 21:38:09,160 INFO L125 PetriNetUnfolderBase]: For 1029478/1034601 co-relation queries the response was YES. [2023-08-25 21:38:12,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 408124 conditions, 90432 events. 41600/90432 cut-off events. For 1029478/1034601 co-relation queries the response was YES. Maximal size of possible extension queue 1836. Compared 992629 event pairs, 7292 based on Foata normal form. 1136/90068 useless extension candidates. Maximal degree in co-relation 407962. Up to 19560 conditions per place. [2023-08-25 21:38:12,715 INFO L140 encePairwiseOnDemand]: 661/676 looper letters, 1317 selfloop transitions, 1361 changer transitions 0/2705 dead transitions. [2023-08-25 21:38:12,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 577 places, 2705 transitions, 52971 flow [2023-08-25 21:38:12,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-08-25 21:38:12,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-08-25 21:38:12,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 12173 transitions. [2023-08-25 21:38:12,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48668639053254437 [2023-08-25 21:38:12,722 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 12173 transitions. [2023-08-25 21:38:12,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 12173 transitions. [2023-08-25 21:38:12,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:38:12,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 12173 transitions. [2023-08-25 21:38:12,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 329.0) internal successors, (12173), 37 states have internal predecessors, (12173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:38:12,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 676.0) internal successors, (25688), 38 states have internal predecessors, (25688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:38:12,743 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 676.0) internal successors, (25688), 38 states have internal predecessors, (25688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:38:12,744 INFO L175 Difference]: Start difference. First operand has 545 places, 1628 transitions, 32535 flow. Second operand 37 states and 12173 transitions. [2023-08-25 21:38:12,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 577 places, 2705 transitions, 52971 flow [2023-08-25 21:38:30,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 568 places, 2705 transitions, 51698 flow, removed 472 selfloop flow, removed 9 redundant places. [2023-08-25 21:38:30,303 INFO L231 Difference]: Finished difference. Result has 584 places, 1993 transitions, 44730 flow [2023-08-25 21:38:30,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=31120, PETRI_DIFFERENCE_MINUEND_PLACES=532, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1001, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=44730, PETRI_PLACES=584, PETRI_TRANSITIONS=1993} [2023-08-25 21:38:30,304 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, 473 predicate places. [2023-08-25 21:38:30,304 INFO L495 AbstractCegarLoop]: Abstraction has has 584 places, 1993 transitions, 44730 flow [2023-08-25 21:38:30,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 313.5) internal successors, (5643), 18 states have internal predecessors, (5643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:38:30,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:38:30,305 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:38:30,323 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-25 21:38:30,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-08-25 21:38:30,511 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 71 more)] === [2023-08-25 21:38:30,511 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:38:30,511 INFO L85 PathProgramCache]: Analyzing trace with hash -941117483, now seen corresponding path program 9 times [2023-08-25 21:38:30,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:38:30,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503179979] [2023-08-25 21:38:30,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:38:30,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:38:30,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:38:30,687 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 21:38:30,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:38:30,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503179979] [2023-08-25 21:38:30,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503179979] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:38:30,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838852017] [2023-08-25 21:38:30,687 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 21:38:30,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:38:30,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:38:30,701 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:38:30,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-25 21:38:31,143 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-25 21:38:31,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:38:31,145 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-25 21:38:31,146 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:38:31,318 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 21:38:31,319 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:38:31,580 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 21:38:31,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838852017] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:38:31,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:38:31,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2023-08-25 21:38:31,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853694146] [2023-08-25 21:38:31,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:38:31,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-25 21:38:31,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:38:31,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-25 21:38:31,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2023-08-25 21:38:31,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 676 [2023-08-25 21:38:31,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 584 places, 1993 transitions, 44730 flow. Second operand has 16 states, 16 states have (on average 313.3125) internal successors, (5013), 16 states have internal predecessors, (5013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:38:31,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:38:31,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 676 [2023-08-25 21:38:31,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:39:18,429 INFO L124 PetriNetUnfolderBase]: 47315/102401 cut-off events. [2023-08-25 21:39:18,429 INFO L125 PetriNetUnfolderBase]: For 1330480/1337925 co-relation queries the response was YES. [2023-08-25 21:39:22,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 478329 conditions, 102401 events. 47315/102401 cut-off events. For 1330480/1337925 co-relation queries the response was YES. Maximal size of possible extension queue 1905. Compared 1124118 event pairs, 6479 based on Foata normal form. 1377/102108 useless extension candidates. Maximal degree in co-relation 478158. Up to 14648 conditions per place. [2023-08-25 21:39:22,515 INFO L140 encePairwiseOnDemand]: 661/676 looper letters, 1247 selfloop transitions, 1632 changer transitions 0/2906 dead transitions. [2023-08-25 21:39:22,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 618 places, 2906 transitions, 62881 flow [2023-08-25 21:39:22,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-08-25 21:39:22,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-08-25 21:39:22,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 11498 transitions. [2023-08-25 21:39:22,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4859678782755706 [2023-08-25 21:39:22,521 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 11498 transitions. [2023-08-25 21:39:22,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 11498 transitions. [2023-08-25 21:39:22,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:39:22,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 11498 transitions. [2023-08-25 21:39:22,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 328.51428571428573) internal successors, (11498), 35 states have internal predecessors, (11498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:39:22,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 676.0) internal successors, (24336), 36 states have internal predecessors, (24336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:39:22,554 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 676.0) internal successors, (24336), 36 states have internal predecessors, (24336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:39:22,554 INFO L175 Difference]: Start difference. First operand has 584 places, 1993 transitions, 44730 flow. Second operand 35 states and 11498 transitions. [2023-08-25 21:39:22,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 618 places, 2906 transitions, 62881 flow [2023-08-25 21:39:46,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 610 places, 2906 transitions, 62467 flow, removed 173 selfloop flow, removed 8 redundant places. [2023-08-25 21:39:46,891 INFO L231 Difference]: Finished difference. Result has 623 places, 2321 transitions, 57785 flow [2023-08-25 21:39:46,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=44268, PETRI_DIFFERENCE_MINUEND_PLACES=576, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1990, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1335, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=57785, PETRI_PLACES=623, PETRI_TRANSITIONS=2321} [2023-08-25 21:39:46,893 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, 512 predicate places. [2023-08-25 21:39:46,893 INFO L495 AbstractCegarLoop]: Abstraction has has 623 places, 2321 transitions, 57785 flow [2023-08-25 21:39:46,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 313.3125) internal successors, (5013), 16 states have internal predecessors, (5013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:39:46,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:39:46,893 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:39:46,915 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-08-25 21:39:47,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-08-25 21:39:47,098 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 71 more)] === [2023-08-25 21:39:47,099 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:39:47,099 INFO L85 PathProgramCache]: Analyzing trace with hash -259607277, now seen corresponding path program 10 times [2023-08-25 21:39:47,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:39:47,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315343847] [2023-08-25 21:39:47,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:39:47,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:39:47,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:39:47,264 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 21:39:47,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:39:47,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315343847] [2023-08-25 21:39:47,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315343847] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:39:47,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173800185] [2023-08-25 21:39:47,264 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 21:39:47,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:39:47,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:39:47,265 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:39:47,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-25 21:39:48,031 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 21:39:48,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:39:48,034 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-25 21:39:48,035 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:39:48,169 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 21:39:48,169 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:39:48,336 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 21:39:48,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173800185] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:39:48,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:39:48,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2023-08-25 21:39:48,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096236556] [2023-08-25 21:39:48,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:39:48,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-25 21:39:48,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:39:48,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-25 21:39:48,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2023-08-25 21:39:48,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 676 [2023-08-25 21:39:48,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 623 places, 2321 transitions, 57785 flow. Second operand has 19 states, 19 states have (on average 313.36842105263156) internal successors, (5954), 19 states have internal predecessors, (5954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:39:48,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:39:48,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 676 [2023-08-25 21:39:48,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:40:50,272 INFO L124 PetriNetUnfolderBase]: 59552/127758 cut-off events. [2023-08-25 21:40:50,273 INFO L125 PetriNetUnfolderBase]: For 2018417/2025354 co-relation queries the response was YES. [2023-08-25 21:40:55,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 632952 conditions, 127758 events. 59552/127758 cut-off events. For 2018417/2025354 co-relation queries the response was YES. Maximal size of possible extension queue 1959. Compared 1395159 event pairs, 7614 based on Foata normal form. 1754/127399 useless extension candidates. Maximal degree in co-relation 632774. Up to 18455 conditions per place. [2023-08-25 21:40:55,682 INFO L140 encePairwiseOnDemand]: 660/676 looper letters, 1485 selfloop transitions, 2112 changer transitions 0/3624 dead transitions. [2023-08-25 21:40:55,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 662 places, 3624 transitions, 88047 flow [2023-08-25 21:40:55,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-08-25 21:40:55,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-08-25 21:40:55,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 13046 transitions. [2023-08-25 21:40:55,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4824704142011834 [2023-08-25 21:40:55,689 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 13046 transitions. [2023-08-25 21:40:55,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 13046 transitions. [2023-08-25 21:40:55,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:40:55,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 13046 transitions. [2023-08-25 21:40:55,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 326.15) internal successors, (13046), 40 states have internal predecessors, (13046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:40:55,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 676.0) internal successors, (27716), 41 states have internal predecessors, (27716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:40:55,718 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 676.0) internal successors, (27716), 41 states have internal predecessors, (27716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:40:55,718 INFO L175 Difference]: Start difference. First operand has 623 places, 2321 transitions, 57785 flow. Second operand 40 states and 13046 transitions. [2023-08-25 21:40:55,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 662 places, 3624 transitions, 88047 flow