/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/weaver/chl-node-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 05:05:14,994 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 05:05:15,059 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 05:05:15,067 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 05:05:15,068 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 05:05:15,101 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 05:05:15,102 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 05:05:15,103 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 05:05:15,103 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 05:05:15,107 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 05:05:15,107 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 05:05:15,107 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 05:05:15,108 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 05:05:15,109 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 05:05:15,109 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 05:05:15,109 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 05:05:15,109 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 05:05:15,110 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 05:05:15,110 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 05:05:15,110 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 05:05:15,110 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 05:05:15,111 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 05:05:15,111 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 05:05:15,112 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 05:05:15,112 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 05:05:15,112 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 05:05:15,113 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 05:05:15,113 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 05:05:15,113 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 05:05:15,113 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 05:05:15,114 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 05:05:15,114 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 05:05:15,115 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 05:05:15,115 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 05:05:15,115 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 05:05:15,115 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 05:05:15,444 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 05:05:15,465 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 05:05:15,467 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 05:05:15,468 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 05:05:15,469 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 05:05:15,470 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-node-trans.wvr.c [2023-08-25 05:05:16,657 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 05:05:16,858 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 05:05:16,859 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-trans.wvr.c [2023-08-25 05:05:16,866 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/048abbdc2/1dbaf99f23c14f8bb84462371defcf6e/FLAG08ea6d827 [2023-08-25 05:05:16,878 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/048abbdc2/1dbaf99f23c14f8bb84462371defcf6e [2023-08-25 05:05:16,880 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 05:05:16,882 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 05:05:16,883 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 05:05:16,883 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 05:05:16,885 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 05:05:16,886 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 05:05:16" (1/1) ... [2023-08-25 05:05:16,887 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@544ddde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:05:16, skipping insertion in model container [2023-08-25 05:05:16,887 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 05:05:16" (1/1) ... [2023-08-25 05:05:16,908 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 05:05:17,147 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 05:05:17,155 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 05:05:17,218 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 05:05:17,244 INFO L206 MainTranslator]: Completed translation [2023-08-25 05:05:17,244 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:05:17 WrapperNode [2023-08-25 05:05:17,244 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 05:05:17,246 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 05:05:17,246 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 05:05:17,246 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 05:05:17,252 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:05:17" (1/1) ... [2023-08-25 05:05:17,279 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:05:17" (1/1) ... [2023-08-25 05:05:17,361 INFO L138 Inliner]: procedures = 27, calls = 67, calls flagged for inlining = 23, calls inlined = 35, statements flattened = 821 [2023-08-25 05:05:17,361 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 05:05:17,362 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 05:05:17,362 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 05:05:17,362 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 05:05:17,371 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:05:17" (1/1) ... [2023-08-25 05:05:17,371 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:05:17" (1/1) ... [2023-08-25 05:05:17,382 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:05:17" (1/1) ... [2023-08-25 05:05:17,382 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:05:17" (1/1) ... [2023-08-25 05:05:17,410 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:05:17" (1/1) ... [2023-08-25 05:05:17,415 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:05:17" (1/1) ... [2023-08-25 05:05:17,418 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:05:17" (1/1) ... [2023-08-25 05:05:17,421 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:05:17" (1/1) ... [2023-08-25 05:05:17,426 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 05:05:17,429 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 05:05:17,429 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 05:05:17,429 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 05:05:17,429 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:05:17" (1/1) ... [2023-08-25 05:05:17,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 05:05:17,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:05:17,490 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 05:05:17,491 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 05:05:17,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 05:05:17,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 05:05:17,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 05:05:17,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 05:05:17,516 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-25 05:05:17,516 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-25 05:05:17,517 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-25 05:05:17,517 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-25 05:05:17,517 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-25 05:05:17,517 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-25 05:05:17,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 05:05:17,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-25 05:05:17,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 05:05:17,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 05:05:17,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 05:05:17,520 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 05:05:17,651 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 05:05:17,652 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 05:05:18,592 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 05:05:18,603 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 05:05:18,604 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-25 05:05:18,606 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 05:05:18 BoogieIcfgContainer [2023-08-25 05:05:18,606 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 05:05:18,608 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 05:05:18,608 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 05:05:18,610 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 05:05:18,611 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 05:05:16" (1/3) ... [2023-08-25 05:05:18,611 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78c9da34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 05:05:18, skipping insertion in model container [2023-08-25 05:05:18,611 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:05:17" (2/3) ... [2023-08-25 05:05:18,611 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78c9da34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 05:05:18, skipping insertion in model container [2023-08-25 05:05:18,612 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 05:05:18" (3/3) ... [2023-08-25 05:05:18,613 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-trans.wvr.c [2023-08-25 05:05:18,625 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 05:05:18,625 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 118 error locations. [2023-08-25 05:05:18,626 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 05:05:18,820 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-25 05:05:18,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 976 places, 1014 transitions, 2052 flow [2023-08-25 05:05:19,312 INFO L124 PetriNetUnfolderBase]: 48/1011 cut-off events. [2023-08-25 05:05:19,312 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-25 05:05:19,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1024 conditions, 1011 events. 48/1011 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 2139 event pairs, 0 based on Foata normal form. 0/845 useless extension candidates. Maximal degree in co-relation 801. Up to 2 conditions per place. [2023-08-25 05:05:19,330 INFO L82 GeneralOperation]: Start removeDead. Operand has 976 places, 1014 transitions, 2052 flow [2023-08-25 05:05:19,352 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 962 places, 1000 transitions, 2018 flow [2023-08-25 05:05:19,356 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 05:05:19,367 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 962 places, 1000 transitions, 2018 flow [2023-08-25 05:05:19,370 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 962 places, 1000 transitions, 2018 flow [2023-08-25 05:05:19,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 962 places, 1000 transitions, 2018 flow [2023-08-25 05:05:19,648 INFO L124 PetriNetUnfolderBase]: 48/1000 cut-off events. [2023-08-25 05:05:19,648 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-25 05:05:19,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1013 conditions, 1000 events. 48/1000 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 2129 event pairs, 0 based on Foata normal form. 0/835 useless extension candidates. Maximal degree in co-relation 801. Up to 2 conditions per place. [2023-08-25 05:05:19,706 INFO L119 LiptonReduction]: Number of co-enabled transitions 148920 [2023-08-25 05:05:42,700 INFO L134 LiptonReduction]: Checked pairs total: 1074713 [2023-08-25 05:05:42,701 INFO L136 LiptonReduction]: Total number of compositions: 1006 [2023-08-25 05:05:42,713 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 05:05:42,718 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;@44189838, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 05:05:42,718 INFO L358 AbstractCegarLoop]: Starting to check reachability of 196 error locations. [2023-08-25 05:05:42,720 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 05:05:42,720 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-25 05:05:42,720 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 05:05:42,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:05:42,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-25 05:05:42,721 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 192 more)] === [2023-08-25 05:05:42,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:05:42,725 INFO L85 PathProgramCache]: Analyzing trace with hash 3650, now seen corresponding path program 1 times [2023-08-25 05:05:42,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:05:42,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102690554] [2023-08-25 05:05:42,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:05:42,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:05:42,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:05:42,814 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 05:05:42,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:05:42,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102690554] [2023-08-25 05:05:42,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102690554] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 05:05:42,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 05:05:42,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-25 05:05:42,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543655597] [2023-08-25 05:05:42,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 05:05:42,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 05:05:42,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:05:42,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 05:05:42,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 05:05:42,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 978 out of 2020 [2023-08-25 05:05:42,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 320 transitions, 658 flow. Second operand has 2 states, 2 states have (on average 978.5) internal successors, (1957), 2 states have internal predecessors, (1957), 0 states have call successors, (0), 0 states 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 05:05:42,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:05:42,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 978 of 2020 [2023-08-25 05:05:42,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:05:47,282 INFO L124 PetriNetUnfolderBase]: 11567/38387 cut-off events. [2023-08-25 05:05:47,283 INFO L125 PetriNetUnfolderBase]: For 539/539 co-relation queries the response was YES. [2023-08-25 05:05:47,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54756 conditions, 38387 events. 11567/38387 cut-off events. For 539/539 co-relation queries the response was YES. Maximal size of possible extension queue 989. Compared 488850 event pairs, 9493 based on Foata normal form. 2148/32380 useless extension candidates. Maximal degree in co-relation 51306. Up to 15933 conditions per place. [2023-08-25 05:05:47,706 INFO L140 encePairwiseOnDemand]: 1959/2020 looper letters, 66 selfloop transitions, 0 changer transitions 0/259 dead transitions. [2023-08-25 05:05:47,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 259 transitions, 668 flow [2023-08-25 05:05:47,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 05:05:47,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 05:05:47,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 2083 transitions. [2023-08-25 05:05:47,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5155940594059406 [2023-08-25 05:05:47,729 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 2083 transitions. [2023-08-25 05:05:47,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 2083 transitions. [2023-08-25 05:05:47,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:05:47,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 2083 transitions. [2023-08-25 05:05:47,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 1041.5) internal successors, (2083), 2 states have internal predecessors, (2083), 0 states have call successors, (0), 0 states 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 05:05:47,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 2020.0) internal successors, (6060), 3 states have internal predecessors, (6060), 0 states have call successors, (0), 0 states 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 05:05:47,760 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 2020.0) internal successors, (6060), 3 states have internal predecessors, (6060), 0 states have call successors, (0), 0 states 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 05:05:47,761 INFO L175 Difference]: Start difference. First operand has 317 places, 320 transitions, 658 flow. Second operand 2 states and 2083 transitions. [2023-08-25 05:05:47,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 259 transitions, 668 flow [2023-08-25 05:05:47,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 259 transitions, 656 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-25 05:05:47,797 INFO L231 Difference]: Finished difference. Result has 252 places, 259 transitions, 524 flow [2023-08-25 05:05:47,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2020, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=524, PETRI_PLACES=252, PETRI_TRANSITIONS=259} [2023-08-25 05:05:47,802 INFO L281 CegarLoopForPetriNet]: 317 programPoint places, -65 predicate places. [2023-08-25 05:05:47,802 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 259 transitions, 524 flow [2023-08-25 05:05:47,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 978.5) internal successors, (1957), 2 states have internal predecessors, (1957), 0 states have call successors, (0), 0 states 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 05:05:47,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:05:47,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:05:47,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 05:05:47,804 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 192 more)] === [2023-08-25 05:05:47,812 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:05:47,813 INFO L85 PathProgramCache]: Analyzing trace with hash 458460679, now seen corresponding path program 1 times [2023-08-25 05:05:47,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:05:47,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921851472] [2023-08-25 05:05:47,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:05:47,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:05:47,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:05:48,022 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 05:05:48,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:05:48,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921851472] [2023-08-25 05:05:48,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921851472] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 05:05:48,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 05:05:48,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 05:05:48,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959532077] [2023-08-25 05:05:48,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 05:05:48,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 05:05:48,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:05:48,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 05:05:48,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 05:05:48,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 963 out of 2020 [2023-08-25 05:05:48,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 259 transitions, 524 flow. Second operand has 3 states, 3 states have (on average 966.3333333333334) internal successors, (2899), 3 states have internal predecessors, (2899), 0 states have call successors, (0), 0 states 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 05:05:48,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:05:48,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 963 of 2020 [2023-08-25 05:05:48,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:05:51,569 INFO L124 PetriNetUnfolderBase]: 16787/44630 cut-off events. [2023-08-25 05:05:51,569 INFO L125 PetriNetUnfolderBase]: For 101/101 co-relation queries the response was YES. [2023-08-25 05:05:51,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67932 conditions, 44630 events. 16787/44630 cut-off events. For 101/101 co-relation queries the response was YES. Maximal size of possible extension queue 1101. Compared 524810 event pairs, 5005 based on Foata normal form. 0/37527 useless extension candidates. Maximal degree in co-relation 67929. Up to 23054 conditions per place. [2023-08-25 05:05:51,906 INFO L140 encePairwiseOnDemand]: 2014/2020 looper letters, 88 selfloop transitions, 2 changer transitions 0/273 dead transitions. [2023-08-25 05:05:51,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 273 transitions, 734 flow [2023-08-25 05:05:51,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 05:05:51,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 05:05:51,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2983 transitions. [2023-08-25 05:05:51,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49224422442244226 [2023-08-25 05:05:51,914 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2983 transitions. [2023-08-25 05:05:51,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2983 transitions. [2023-08-25 05:05:51,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:05:51,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2983 transitions. [2023-08-25 05:05:51,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 994.3333333333334) internal successors, (2983), 3 states have internal predecessors, (2983), 0 states have call successors, (0), 0 states 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 05:05:51,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2020.0) internal successors, (8080), 4 states have internal predecessors, (8080), 0 states have call successors, (0), 0 states 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 05:05:51,937 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2020.0) internal successors, (8080), 4 states have internal predecessors, (8080), 0 states have call successors, (0), 0 states 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 05:05:51,937 INFO L175 Difference]: Start difference. First operand has 252 places, 259 transitions, 524 flow. Second operand 3 states and 2983 transitions. [2023-08-25 05:05:51,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 273 transitions, 734 flow [2023-08-25 05:05:51,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 273 transitions, 734 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 05:05:51,944 INFO L231 Difference]: Finished difference. Result has 251 places, 257 transitions, 530 flow [2023-08-25 05:05:51,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2020, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=530, PETRI_PLACES=251, PETRI_TRANSITIONS=257} [2023-08-25 05:05:51,945 INFO L281 CegarLoopForPetriNet]: 317 programPoint places, -66 predicate places. [2023-08-25 05:05:51,945 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 257 transitions, 530 flow [2023-08-25 05:05:51,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 966.3333333333334) internal successors, (2899), 3 states have internal predecessors, (2899), 0 states have call successors, (0), 0 states 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 05:05:51,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:05:51,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:05:51,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 05:05:51,949 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 192 more)] === [2023-08-25 05:05:51,953 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:05:51,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1800846487, now seen corresponding path program 1 times [2023-08-25 05:05:51,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:05:51,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189960123] [2023-08-25 05:05:51,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:05:51,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:05:52,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:05:52,092 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 05:05:52,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:05:52,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189960123] [2023-08-25 05:05:52,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189960123] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 05:05:52,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 05:05:52,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 05:05:52,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220891748] [2023-08-25 05:05:52,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 05:05:52,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 05:05:52,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:05:52,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 05:05:52,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 05:05:52,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 945 out of 2020 [2023-08-25 05:05:52,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 257 transitions, 530 flow. Second operand has 3 states, 3 states have (on average 948.3333333333334) internal successors, (2845), 3 states have internal predecessors, (2845), 0 states have call successors, (0), 0 states 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 05:05:52,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:05:52,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 945 of 2020 [2023-08-25 05:05:52,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:05:58,446 INFO L124 PetriNetUnfolderBase]: 23689/73233 cut-off events. [2023-08-25 05:05:58,446 INFO L125 PetriNetUnfolderBase]: For 156/156 co-relation queries the response was YES. [2023-08-25 05:05:58,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106277 conditions, 73233 events. 23689/73233 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 1660. Compared 990170 event pairs, 20141 based on Foata normal form. 0/60843 useless extension candidates. Maximal degree in co-relation 106273. Up to 32836 conditions per place. [2023-08-25 05:05:58,956 INFO L140 encePairwiseOnDemand]: 2013/2020 looper letters, 77 selfloop transitions, 1 changer transitions 0/251 dead transitions. [2023-08-25 05:05:58,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 251 transitions, 674 flow [2023-08-25 05:05:58,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 05:05:58,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 05:05:58,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2919 transitions. [2023-08-25 05:05:58,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48168316831683167 [2023-08-25 05:05:58,964 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2919 transitions. [2023-08-25 05:05:58,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2919 transitions. [2023-08-25 05:05:58,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:05:58,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2919 transitions. [2023-08-25 05:05:58,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 973.0) internal successors, (2919), 3 states have internal predecessors, (2919), 0 states have call successors, (0), 0 states 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 05:05:58,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2020.0) internal successors, (8080), 4 states have internal predecessors, (8080), 0 states have call successors, (0), 0 states 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 05:05:58,987 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2020.0) internal successors, (8080), 4 states have internal predecessors, (8080), 0 states have call successors, (0), 0 states 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 05:05:58,988 INFO L175 Difference]: Start difference. First operand has 251 places, 257 transitions, 530 flow. Second operand 3 states and 2919 transitions. [2023-08-25 05:05:58,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 251 transitions, 674 flow [2023-08-25 05:05:58,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 251 transitions, 674 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 05:05:58,996 INFO L231 Difference]: Finished difference. Result has 247 places, 251 transitions, 520 flow [2023-08-25 05:05:58,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2020, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=520, PETRI_PLACES=247, PETRI_TRANSITIONS=251} [2023-08-25 05:05:58,998 INFO L281 CegarLoopForPetriNet]: 317 programPoint places, -70 predicate places. [2023-08-25 05:05:58,998 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 251 transitions, 520 flow [2023-08-25 05:05:58,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 948.3333333333334) internal successors, (2845), 3 states have internal predecessors, (2845), 0 states have call successors, (0), 0 states 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 05:05:58,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:05:59,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:05:59,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 05:05:59,003 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 192 more)] === [2023-08-25 05:05:59,004 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:05:59,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1765562640, now seen corresponding path program 1 times [2023-08-25 05:05:59,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:05:59,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614482814] [2023-08-25 05:05:59,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:05:59,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:05:59,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:05:59,103 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 05:05:59,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:05:59,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614482814] [2023-08-25 05:05:59,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614482814] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 05:05:59,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 05:05:59,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 05:05:59,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421231854] [2023-08-25 05:05:59,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 05:05:59,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 05:05:59,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:05:59,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 05:05:59,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 05:05:59,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 963 out of 2020 [2023-08-25 05:05:59,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 251 transitions, 520 flow. Second operand has 3 states, 3 states have (on average 967.0) internal successors, (2901), 3 states have internal predecessors, (2901), 0 states have call successors, (0), 0 states 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 05:05:59,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:05:59,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 963 of 2020 [2023-08-25 05:05:59,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:06:03,618 INFO L124 PetriNetUnfolderBase]: 19260/57231 cut-off events. [2023-08-25 05:06:03,618 INFO L125 PetriNetUnfolderBase]: For 167/167 co-relation queries the response was YES. [2023-08-25 05:06:03,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84181 conditions, 57231 events. 19260/57231 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 1263. Compared 724660 event pairs, 12103 based on Foata normal form. 0/47928 useless extension candidates. Maximal degree in co-relation 84176. Up to 26522 conditions per place. [2023-08-25 05:06:04,004 INFO L140 encePairwiseOnDemand]: 2014/2020 looper letters, 96 selfloop transitions, 2 changer transitions 0/273 dead transitions. [2023-08-25 05:06:04,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 273 transitions, 762 flow [2023-08-25 05:06:04,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 05:06:04,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 05:06:04,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2991 transitions. [2023-08-25 05:06:04,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49356435643564356 [2023-08-25 05:06:04,011 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2991 transitions. [2023-08-25 05:06:04,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2991 transitions. [2023-08-25 05:06:04,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:06:04,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2991 transitions. [2023-08-25 05:06:04,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 997.0) internal successors, (2991), 3 states have internal predecessors, (2991), 0 states have call successors, (0), 0 states 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 05:06:04,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2020.0) internal successors, (8080), 4 states have internal predecessors, (8080), 0 states have call successors, (0), 0 states 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 05:06:04,030 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2020.0) internal successors, (8080), 4 states have internal predecessors, (8080), 0 states have call successors, (0), 0 states 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 05:06:04,030 INFO L175 Difference]: Start difference. First operand has 247 places, 251 transitions, 520 flow. Second operand 3 states and 2991 transitions. [2023-08-25 05:06:04,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 273 transitions, 762 flow [2023-08-25 05:06:04,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 273 transitions, 761 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 05:06:04,035 INFO L231 Difference]: Finished difference. Result has 245 places, 249 transitions, 525 flow [2023-08-25 05:06:04,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2020, PETRI_DIFFERENCE_MINUEND_FLOW=511, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=525, PETRI_PLACES=245, PETRI_TRANSITIONS=249} [2023-08-25 05:06:04,037 INFO L281 CegarLoopForPetriNet]: 317 programPoint places, -72 predicate places. [2023-08-25 05:06:04,037 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 249 transitions, 525 flow [2023-08-25 05:06:04,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 967.0) internal successors, (2901), 3 states have internal predecessors, (2901), 0 states have call successors, (0), 0 states 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 05:06:04,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:06:04,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:06:04,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 05:06:04,039 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 192 more)] === [2023-08-25 05:06:04,039 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:06:04,040 INFO L85 PathProgramCache]: Analyzing trace with hash -193537966, now seen corresponding path program 1 times [2023-08-25 05:06:04,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:06:04,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145646748] [2023-08-25 05:06:04,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:06:04,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:06:04,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:06:04,112 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 05:06:04,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:06:04,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145646748] [2023-08-25 05:06:04,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145646748] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 05:06:04,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 05:06:04,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 05:06:04,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507324237] [2023-08-25 05:06:04,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 05:06:04,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 05:06:04,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:06:04,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 05:06:04,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 05:06:04,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 945 out of 2020 [2023-08-25 05:06:04,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 249 transitions, 525 flow. Second operand has 3 states, 3 states have (on average 949.0) internal successors, (2847), 3 states have internal predecessors, (2847), 0 states have call successors, (0), 0 states 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 05:06:04,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:06:04,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 945 of 2020 [2023-08-25 05:06:04,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:06:10,342 INFO L124 PetriNetUnfolderBase]: 28980/77156 cut-off events. [2023-08-25 05:06:10,343 INFO L125 PetriNetUnfolderBase]: For 800/800 co-relation queries the response was YES. [2023-08-25 05:06:10,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118614 conditions, 77156 events. 28980/77156 cut-off events. For 800/800 co-relation queries the response was YES. Maximal size of possible extension queue 1634. Compared 967746 event pairs, 25096 based on Foata normal form. 0/66613 useless extension candidates. Maximal degree in co-relation 118609. Up to 40469 conditions per place. [2023-08-25 05:06:10,865 INFO L140 encePairwiseOnDemand]: 2013/2020 looper letters, 78 selfloop transitions, 1 changer transitions 0/243 dead transitions. [2023-08-25 05:06:10,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 243 transitions, 671 flow [2023-08-25 05:06:10,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 05:06:10,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 05:06:10,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2919 transitions. [2023-08-25 05:06:10,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48168316831683167 [2023-08-25 05:06:10,872 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2919 transitions. [2023-08-25 05:06:10,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2919 transitions. [2023-08-25 05:06:10,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:06:10,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2919 transitions. [2023-08-25 05:06:10,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 973.0) internal successors, (2919), 3 states have internal predecessors, (2919), 0 states have call successors, (0), 0 states 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 05:06:10,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2020.0) internal successors, (8080), 4 states have internal predecessors, (8080), 0 states have call successors, (0), 0 states 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 05:06:10,887 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2020.0) internal successors, (8080), 4 states have internal predecessors, (8080), 0 states have call successors, (0), 0 states 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 05:06:10,887 INFO L175 Difference]: Start difference. First operand has 245 places, 249 transitions, 525 flow. Second operand 3 states and 2919 transitions. [2023-08-25 05:06:10,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 243 transitions, 671 flow [2023-08-25 05:06:10,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 243 transitions, 671 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 05:06:10,891 INFO L231 Difference]: Finished difference. Result has 241 places, 243 transitions, 515 flow [2023-08-25 05:06:10,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2020, PETRI_DIFFERENCE_MINUEND_FLOW=513, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=515, PETRI_PLACES=241, PETRI_TRANSITIONS=243} [2023-08-25 05:06:10,892 INFO L281 CegarLoopForPetriNet]: 317 programPoint places, -76 predicate places. [2023-08-25 05:06:10,892 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 243 transitions, 515 flow [2023-08-25 05:06:10,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 949.0) internal successors, (2847), 3 states have internal predecessors, (2847), 0 states have call successors, (0), 0 states 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 05:06:10,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:06:10,894 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 05:06:10,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-25 05:06:10,894 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 192 more)] === [2023-08-25 05:06:10,894 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:06:10,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1333992070, now seen corresponding path program 1 times [2023-08-25 05:06:10,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:06:10,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100921102] [2023-08-25 05:06:10,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:06:10,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:06:10,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:06:10,993 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 05:06:10,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:06:10,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100921102] [2023-08-25 05:06:10,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100921102] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 05:06:10,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 05:06:10,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 05:06:10,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281132807] [2023-08-25 05:06:10,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 05:06:10,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 05:06:10,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:06:10,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 05:06:10,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 05:06:10,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 924 out of 2020 [2023-08-25 05:06:11,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 243 transitions, 515 flow. Second operand has 3 states, 3 states have (on average 928.3333333333334) internal successors, (2785), 3 states have internal predecessors, (2785), 0 states have call successors, (0), 0 states 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 05:06:11,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:06:11,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 924 of 2020 [2023-08-25 05:06:11,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:06:14,377 INFO L124 PetriNetUnfolderBase]: 12732/40867 cut-off events. [2023-08-25 05:06:14,377 INFO L125 PetriNetUnfolderBase]: For 522/522 co-relation queries the response was YES. [2023-08-25 05:06:14,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59234 conditions, 40867 events. 12732/40867 cut-off events. For 522/522 co-relation queries the response was YES. Maximal size of possible extension queue 1000. Compared 516137 event pairs, 10432 based on Foata normal form. 0/34066 useless extension candidates. Maximal degree in co-relation 59228. Up to 17766 conditions per place. [2023-08-25 05:06:14,630 INFO L140 encePairwiseOnDemand]: 2017/2020 looper letters, 66 selfloop transitions, 2 changer transitions 0/244 dead transitions. [2023-08-25 05:06:14,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 244 transitions, 653 flow [2023-08-25 05:06:14,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 05:06:14,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 05:06:14,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2840 transitions. [2023-08-25 05:06:14,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46864686468646866 [2023-08-25 05:06:14,636 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2840 transitions. [2023-08-25 05:06:14,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2840 transitions. [2023-08-25 05:06:14,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:06:14,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2840 transitions. [2023-08-25 05:06:14,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 946.6666666666666) internal successors, (2840), 3 states have internal predecessors, (2840), 0 states have call successors, (0), 0 states 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 05:06:14,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2020.0) internal successors, (8080), 4 states have internal predecessors, (8080), 0 states have call successors, (0), 0 states 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 05:06:14,649 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2020.0) internal successors, (8080), 4 states have internal predecessors, (8080), 0 states have call successors, (0), 0 states 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 05:06:14,649 INFO L175 Difference]: Start difference. First operand has 241 places, 243 transitions, 515 flow. Second operand 3 states and 2840 transitions. [2023-08-25 05:06:14,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 244 transitions, 653 flow [2023-08-25 05:06:14,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 244 transitions, 652 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 05:06:14,654 INFO L231 Difference]: Finished difference. Result has 243 places, 244 transitions, 526 flow [2023-08-25 05:06:14,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2020, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=526, PETRI_PLACES=243, PETRI_TRANSITIONS=244} [2023-08-25 05:06:14,655 INFO L281 CegarLoopForPetriNet]: 317 programPoint places, -74 predicate places. [2023-08-25 05:06:14,655 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 244 transitions, 526 flow [2023-08-25 05:06:14,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 928.3333333333334) internal successors, (2785), 3 states have internal predecessors, (2785), 0 states have call successors, (0), 0 states 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 05:06:14,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:06:14,656 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 05:06:14,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-25 05:06:14,656 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 192 more)] === [2023-08-25 05:06:14,656 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:06:14,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1554349247, now seen corresponding path program 1 times [2023-08-25 05:06:14,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:06:14,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868099794] [2023-08-25 05:06:14,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:06:14,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:06:14,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:06:14,800 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 05:06:14,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:06:14,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868099794] [2023-08-25 05:06:14,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868099794] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 05:06:14,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 05:06:14,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 05:06:14,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436825676] [2023-08-25 05:06:14,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 05:06:14,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 05:06:14,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:06:14,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 05:06:14,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-25 05:06:14,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 882 out of 2020 [2023-08-25 05:06:14,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 244 transitions, 526 flow. Second operand has 4 states, 4 states have (on average 885.5) internal successors, (3542), 4 states have internal predecessors, (3542), 0 states have call successors, (0), 0 states 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 05:06:14,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:06:14,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 882 of 2020 [2023-08-25 05:06:14,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:06:26,852 INFO L124 PetriNetUnfolderBase]: 70685/141470 cut-off events. [2023-08-25 05:06:26,852 INFO L125 PetriNetUnfolderBase]: For 1363/1363 co-relation queries the response was YES. [2023-08-25 05:06:27,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242035 conditions, 141470 events. 70685/141470 cut-off events. For 1363/1363 co-relation queries the response was YES. Maximal size of possible extension queue 2599. Compared 1567918 event pairs, 63517 based on Foata normal form. 0/117267 useless extension candidates. Maximal degree in co-relation 242028. Up to 98723 conditions per place. [2023-08-25 05:06:28,034 INFO L140 encePairwiseOnDemand]: 2016/2020 looper letters, 98 selfloop transitions, 3 changer transitions 0/245 dead transitions. [2023-08-25 05:06:28,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 245 transitions, 730 flow [2023-08-25 05:06:28,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 05:06:28,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 05:06:28,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3628 transitions. [2023-08-25 05:06:28,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.449009900990099 [2023-08-25 05:06:28,043 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3628 transitions. [2023-08-25 05:06:28,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3628 transitions. [2023-08-25 05:06:28,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:06:28,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3628 transitions. [2023-08-25 05:06:28,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 907.0) internal successors, (3628), 4 states have internal predecessors, (3628), 0 states have call successors, (0), 0 states 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 05:06:28,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 2020.0) internal successors, (10100), 5 states have internal predecessors, (10100), 0 states have call successors, (0), 0 states 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 05:06:28,063 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 2020.0) internal successors, (10100), 5 states have internal predecessors, (10100), 0 states have call successors, (0), 0 states 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 05:06:28,063 INFO L175 Difference]: Start difference. First operand has 243 places, 244 transitions, 526 flow. Second operand 4 states and 3628 transitions. [2023-08-25 05:06:28,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 245 transitions, 730 flow [2023-08-25 05:06:28,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 245 transitions, 726 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-25 05:06:28,068 INFO L231 Difference]: Finished difference. Result has 246 places, 245 transitions, 536 flow [2023-08-25 05:06:28,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2020, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=536, PETRI_PLACES=246, PETRI_TRANSITIONS=245} [2023-08-25 05:06:28,069 INFO L281 CegarLoopForPetriNet]: 317 programPoint places, -71 predicate places. [2023-08-25 05:06:28,069 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 245 transitions, 536 flow [2023-08-25 05:06:28,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 885.5) internal successors, (3542), 4 states have internal predecessors, (3542), 0 states have call successors, (0), 0 states 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 05:06:28,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:06:28,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:06:28,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-25 05:06:28,071 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 192 more)] === [2023-08-25 05:06:28,072 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:06:28,072 INFO L85 PathProgramCache]: Analyzing trace with hash 873401723, now seen corresponding path program 1 times [2023-08-25 05:06:28,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:06:28,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500926427] [2023-08-25 05:06:28,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:06:28,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:06:28,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:06:28,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 05:06:28,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:06:28,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500926427] [2023-08-25 05:06:28,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500926427] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 05:06:28,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 05:06:28,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 05:06:28,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060290655] [2023-08-25 05:06:28,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 05:06:28,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 05:06:28,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:06:28,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 05:06:28,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 05:06:28,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 882 out of 2020 [2023-08-25 05:06:28,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 245 transitions, 536 flow. Second operand has 4 states, 4 states have (on average 885.75) internal successors, (3543), 4 states have internal predecessors, (3543), 0 states have call successors, (0), 0 states 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 05:06:28,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:06:28,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 882 of 2020 [2023-08-25 05:06:28,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:06:37,010 INFO L124 PetriNetUnfolderBase]: 48388/100548 cut-off events. [2023-08-25 05:06:37,010 INFO L125 PetriNetUnfolderBase]: For 2059/2059 co-relation queries the response was YES. [2023-08-25 05:06:37,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170205 conditions, 100548 events. 48388/100548 cut-off events. For 2059/2059 co-relation queries the response was YES. Maximal size of possible extension queue 2343. Compared 1126729 event pairs, 42512 based on Foata normal form. 0/82893 useless extension candidates. Maximal degree in co-relation 170197. Up to 67744 conditions per place. [2023-08-25 05:06:37,796 INFO L140 encePairwiseOnDemand]: 2015/2020 looper letters, 92 selfloop transitions, 4 changer transitions 0/246 dead transitions. [2023-08-25 05:06:37,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 246 transitions, 730 flow [2023-08-25 05:06:37,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 05:06:37,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 05:06:37,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3623 transitions. [2023-08-25 05:06:37,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4483910891089109 [2023-08-25 05:06:37,802 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3623 transitions. [2023-08-25 05:06:37,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3623 transitions. [2023-08-25 05:06:37,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:06:37,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3623 transitions. [2023-08-25 05:06:37,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 905.75) internal successors, (3623), 4 states have internal predecessors, (3623), 0 states have call successors, (0), 0 states 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 05:06:37,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 2020.0) internal successors, (10100), 5 states have internal predecessors, (10100), 0 states have call successors, (0), 0 states 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 05:06:37,819 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 2020.0) internal successors, (10100), 5 states have internal predecessors, (10100), 0 states have call successors, (0), 0 states 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 05:06:37,819 INFO L175 Difference]: Start difference. First operand has 246 places, 245 transitions, 536 flow. Second operand 4 states and 3623 transitions. [2023-08-25 05:06:37,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 246 transitions, 730 flow [2023-08-25 05:06:37,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 246 transitions, 724 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-25 05:06:37,823 INFO L231 Difference]: Finished difference. Result has 248 places, 246 transitions, 548 flow [2023-08-25 05:06:37,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2020, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=548, PETRI_PLACES=248, PETRI_TRANSITIONS=246} [2023-08-25 05:06:37,824 INFO L281 CegarLoopForPetriNet]: 317 programPoint places, -69 predicate places. [2023-08-25 05:06:37,824 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 246 transitions, 548 flow [2023-08-25 05:06:37,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 885.75) internal successors, (3543), 4 states have internal predecessors, (3543), 0 states have call successors, (0), 0 states 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 05:06:37,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:06:37,826 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 05:06:37,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-25 05:06:37,826 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 192 more)] === [2023-08-25 05:06:37,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:06:37,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1085916700, now seen corresponding path program 1 times [2023-08-25 05:06:37,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:06:37,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20617633] [2023-08-25 05:06:37,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:06:37,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:06:37,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:06:37,945 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 05:06:37,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:06:37,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20617633] [2023-08-25 05:06:37,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20617633] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 05:06:37,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 05:06:37,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 05:06:37,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489947236] [2023-08-25 05:06:37,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 05:06:37,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 05:06:37,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:06:37,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 05:06:37,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 05:06:37,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 894 out of 2020 [2023-08-25 05:06:37,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 246 transitions, 548 flow. Second operand has 4 states, 4 states have (on average 898.0) internal successors, (3592), 4 states have internal predecessors, (3592), 0 states have call successors, (0), 0 states 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 05:06:37,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:06:37,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 894 of 2020 [2023-08-25 05:06:37,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:06:47,161 INFO L124 PetriNetUnfolderBase]: 44080/110407 cut-off events. [2023-08-25 05:06:47,161 INFO L125 PetriNetUnfolderBase]: For 807/807 co-relation queries the response was YES. [2023-08-25 05:06:47,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172938 conditions, 110407 events. 44080/110407 cut-off events. For 807/807 co-relation queries the response was YES. Maximal size of possible extension queue 2432. Compared 1397761 event pairs, 38348 based on Foata normal form. 0/92629 useless extension candidates. Maximal degree in co-relation 172929. Up to 61488 conditions per place. [2023-08-25 05:06:48,209 INFO L140 encePairwiseOnDemand]: 2016/2020 looper letters, 94 selfloop transitions, 3 changer transitions 0/247 dead transitions. [2023-08-25 05:06:48,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 247 transitions, 744 flow [2023-08-25 05:06:48,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 05:06:48,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 05:06:48,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3670 transitions. [2023-08-25 05:06:48,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4542079207920792 [2023-08-25 05:06:48,215 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3670 transitions. [2023-08-25 05:06:48,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3670 transitions. [2023-08-25 05:06:48,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:06:48,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3670 transitions. [2023-08-25 05:06:48,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 917.5) internal successors, (3670), 4 states have internal predecessors, (3670), 0 states have call successors, (0), 0 states 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 05:06:48,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 2020.0) internal successors, (10100), 5 states have internal predecessors, (10100), 0 states have call successors, (0), 0 states 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 05:06:48,229 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 2020.0) internal successors, (10100), 5 states have internal predecessors, (10100), 0 states have call successors, (0), 0 states 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 05:06:48,229 INFO L175 Difference]: Start difference. First operand has 248 places, 246 transitions, 548 flow. Second operand 4 states and 3670 transitions. [2023-08-25 05:06:48,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 247 transitions, 744 flow [2023-08-25 05:06:48,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 247 transitions, 740 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 05:06:48,234 INFO L231 Difference]: Finished difference. Result has 250 places, 247 transitions, 558 flow [2023-08-25 05:06:48,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2020, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=558, PETRI_PLACES=250, PETRI_TRANSITIONS=247} [2023-08-25 05:06:48,235 INFO L281 CegarLoopForPetriNet]: 317 programPoint places, -67 predicate places. [2023-08-25 05:06:48,235 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 247 transitions, 558 flow [2023-08-25 05:06:48,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 898.0) internal successors, (3592), 4 states have internal predecessors, (3592), 0 states have call successors, (0), 0 states 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 05:06:48,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:06:48,236 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] [2023-08-25 05:06:48,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-25 05:06:48,237 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 192 more)] === [2023-08-25 05:06:48,237 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:06:48,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1617779649, now seen corresponding path program 1 times [2023-08-25 05:06:48,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:06:48,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2863725] [2023-08-25 05:06:48,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:06:48,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:06:48,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:06:48,465 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 05:06:48,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:06:48,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2863725] [2023-08-25 05:06:48,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2863725] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:06:48,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648649532] [2023-08-25 05:06:48,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:06:48,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:06:48,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:06:48,470 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 05:06:48,474 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 05:06:48,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:06:48,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-25 05:06:48,657 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:06:48,703 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-25 05:06:48,703 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 05:06:48,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648649532] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 05:06:48,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 05:06:48,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-08-25 05:06:48,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39287545] [2023-08-25 05:06:48,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 05:06:48,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 05:06:48,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:06:48,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 05:06:48,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-25 05:06:48,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 894 out of 2020 [2023-08-25 05:06:48,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 247 transitions, 558 flow. Second operand has 4 states, 4 states have (on average 898.25) internal successors, (3593), 4 states have internal predecessors, (3593), 0 states have call successors, (0), 0 states 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 05:06:48,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:06:48,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 894 of 2020 [2023-08-25 05:06:48,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:07:00,903 INFO L124 PetriNetUnfolderBase]: 70685/141473 cut-off events. [2023-08-25 05:07:00,903 INFO L125 PetriNetUnfolderBase]: For 1366/1366 co-relation queries the response was YES. [2023-08-25 05:07:01,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242057 conditions, 141473 events. 70685/141473 cut-off events. For 1366/1366 co-relation queries the response was YES. Maximal size of possible extension queue 2599. Compared 1568368 event pairs, 63517 based on Foata normal form. 0/117273 useless extension candidates. Maximal degree in co-relation 242047. Up to 98726 conditions per place. [2023-08-25 05:07:02,362 INFO L140 encePairwiseOnDemand]: 2016/2020 looper letters, 101 selfloop transitions, 3 changer transitions 0/248 dead transitions. [2023-08-25 05:07:02,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 248 transitions, 768 flow [2023-08-25 05:07:02,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 05:07:02,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 05:07:02,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3676 transitions. [2023-08-25 05:07:02,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45495049504950497 [2023-08-25 05:07:02,367 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3676 transitions. [2023-08-25 05:07:02,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3676 transitions. [2023-08-25 05:07:02,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:07:02,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3676 transitions. [2023-08-25 05:07:02,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 919.0) internal successors, (3676), 4 states have internal predecessors, (3676), 0 states have call successors, (0), 0 states 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 05:07:02,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 2020.0) internal successors, (10100), 5 states have internal predecessors, (10100), 0 states have call successors, (0), 0 states 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 05:07:02,380 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 2020.0) internal successors, (10100), 5 states have internal predecessors, (10100), 0 states have call successors, (0), 0 states 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 05:07:02,380 INFO L175 Difference]: Start difference. First operand has 250 places, 247 transitions, 558 flow. Second operand 4 states and 3676 transitions. [2023-08-25 05:07:02,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 248 transitions, 768 flow [2023-08-25 05:07:02,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 248 transitions, 762 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-25 05:07:02,385 INFO L231 Difference]: Finished difference. Result has 252 places, 248 transitions, 566 flow [2023-08-25 05:07:02,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2020, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=566, PETRI_PLACES=252, PETRI_TRANSITIONS=248} [2023-08-25 05:07:02,386 INFO L281 CegarLoopForPetriNet]: 317 programPoint places, -65 predicate places. [2023-08-25 05:07:02,386 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 248 transitions, 566 flow [2023-08-25 05:07:02,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 898.25) internal successors, (3593), 4 states have internal predecessors, (3593), 0 states have call successors, (0), 0 states 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 05:07:02,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:07:02,387 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] [2023-08-25 05:07:02,398 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 05:07:02,591 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,SelfDestructingSolverStorable9 [2023-08-25 05:07:02,592 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 192 more)] === [2023-08-25 05:07:02,592 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:07:02,592 INFO L85 PathProgramCache]: Analyzing trace with hash -327593988, now seen corresponding path program 1 times [2023-08-25 05:07:02,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:07:02,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55469715] [2023-08-25 05:07:02,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:07:02,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:07:02,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:07:02,738 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-25 05:07:02,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:07:02,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55469715] [2023-08-25 05:07:02,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55469715] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 05:07:02,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 05:07:02,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 05:07:02,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62619558] [2023-08-25 05:07:02,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 05:07:02,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 05:07:02,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:07:02,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 05:07:02,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 05:07:02,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 894 out of 2020 [2023-08-25 05:07:02,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 248 transitions, 566 flow. Second operand has 4 states, 4 states have (on average 898.5) internal successors, (3594), 4 states have internal predecessors, (3594), 0 states have call successors, (0), 0 states 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 05:07:02,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:07:02,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 894 of 2020 [2023-08-25 05:07:02,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:07:12,033 INFO L124 PetriNetUnfolderBase]: 48388/100551 cut-off events. [2023-08-25 05:07:12,033 INFO L125 PetriNetUnfolderBase]: For 2061/2061 co-relation queries the response was YES. [2023-08-25 05:07:12,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170226 conditions, 100551 events. 48388/100551 cut-off events. For 2061/2061 co-relation queries the response was YES. Maximal size of possible extension queue 2343. Compared 1126638 event pairs, 42512 based on Foata normal form. 0/82899 useless extension candidates. Maximal degree in co-relation 170215. Up to 67748 conditions per place. [2023-08-25 05:07:13,126 INFO L140 encePairwiseOnDemand]: 2016/2020 looper letters, 96 selfloop transitions, 3 changer transitions 0/249 dead transitions. [2023-08-25 05:07:13,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 249 transitions, 766 flow [2023-08-25 05:07:13,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 05:07:13,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 05:07:13,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3670 transitions. [2023-08-25 05:07:13,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4542079207920792 [2023-08-25 05:07:13,131 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3670 transitions. [2023-08-25 05:07:13,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3670 transitions. [2023-08-25 05:07:13,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:07:13,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3670 transitions. [2023-08-25 05:07:13,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 917.5) internal successors, (3670), 4 states have internal predecessors, (3670), 0 states have call successors, (0), 0 states 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 05:07:13,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 2020.0) internal successors, (10100), 5 states have internal predecessors, (10100), 0 states have call successors, (0), 0 states 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 05:07:13,140 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 2020.0) internal successors, (10100), 5 states have internal predecessors, (10100), 0 states have call successors, (0), 0 states 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 05:07:13,140 INFO L175 Difference]: Start difference. First operand has 252 places, 248 transitions, 566 flow. Second operand 4 states and 3670 transitions. [2023-08-25 05:07:13,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 249 transitions, 766 flow [2023-08-25 05:07:13,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 249 transitions, 760 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-25 05:07:13,147 INFO L231 Difference]: Finished difference. Result has 254 places, 249 transitions, 574 flow [2023-08-25 05:07:13,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=2020, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=574, PETRI_PLACES=254, PETRI_TRANSITIONS=249} [2023-08-25 05:07:13,148 INFO L281 CegarLoopForPetriNet]: 317 programPoint places, -63 predicate places. [2023-08-25 05:07:13,148 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 249 transitions, 574 flow [2023-08-25 05:07:13,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 898.5) internal successors, (3594), 4 states have internal predecessors, (3594), 0 states have call successors, (0), 0 states 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 05:07:13,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:07:13,149 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] [2023-08-25 05:07:13,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-25 05:07:13,149 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 192 more)] === [2023-08-25 05:07:13,149 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:07:13,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1044677286, now seen corresponding path program 1 times [2023-08-25 05:07:13,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:07:13,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233145553] [2023-08-25 05:07:13,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:07:13,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:07:13,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:07:13,651 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-25 05:07:13,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:07:13,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233145553] [2023-08-25 05:07:13,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233145553] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 05:07:13,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 05:07:13,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 05:07:13,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228039122] [2023-08-25 05:07:13,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 05:07:13,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 05:07:13,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:07:13,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 05:07:13,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 05:07:13,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 837 out of 2020 [2023-08-25 05:07:13,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 249 transitions, 574 flow. Second operand has 6 states, 6 states have (on average 840.8333333333334) internal successors, (5045), 6 states have internal predecessors, (5045), 0 states have call successors, (0), 0 states 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 05:07:13,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:07:13,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 837 of 2020 [2023-08-25 05:07:13,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand