/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/mult-dist.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 05:23:16,432 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 05:23:16,498 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 05:23:16,502 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 05:23:16,502 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 05:23:16,526 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 05:23:16,527 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 05:23:16,527 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 05:23:16,528 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 05:23:16,530 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 05:23:16,531 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 05:23:16,531 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 05:23:16,531 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 05:23:16,532 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 05:23:16,532 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 05:23:16,532 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 05:23:16,532 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 05:23:16,532 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 05:23:16,533 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 05:23:16,533 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 05:23:16,533 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 05:23:16,533 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 05:23:16,534 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 05:23:16,534 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 05:23:16,534 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 05:23:16,534 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 05:23:16,534 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 05:23:16,535 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 05:23:16,535 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 05:23:16,535 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 05:23:16,536 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 05:23:16,536 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 05:23:16,536 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 05:23:16,536 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 05:23:16,536 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 05:23:16,536 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 05:23:16,779 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 05:23:16,792 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 05:23:16,793 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 05:23:16,794 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 05:23:16,794 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 05:23:16,795 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/mult-dist.wvr.c [2023-08-25 05:23:17,807 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 05:23:18,086 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 05:23:18,086 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/mult-dist.wvr.c [2023-08-25 05:23:18,092 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e420b0836/98ed0f0b0050411aa81502ad47a2b6a0/FLAGeed22f6ce [2023-08-25 05:23:18,100 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e420b0836/98ed0f0b0050411aa81502ad47a2b6a0 [2023-08-25 05:23:18,102 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 05:23:18,103 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 05:23:18,103 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 05:23:18,103 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 05:23:18,105 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 05:23:18,105 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 05:23:18" (1/1) ... [2023-08-25 05:23:18,106 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cdaa1cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:23:18, skipping insertion in model container [2023-08-25 05:23:18,106 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 05:23:18" (1/1) ... [2023-08-25 05:23:18,119 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 05:23:18,231 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 05:23:18,239 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 05:23:18,273 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 05:23:18,283 INFO L206 MainTranslator]: Completed translation [2023-08-25 05:23:18,284 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:23:18 WrapperNode [2023-08-25 05:23:18,284 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 05:23:18,284 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 05:23:18,284 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 05:23:18,285 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 05:23:18,289 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:23:18" (1/1) ... [2023-08-25 05:23:18,305 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:23:18" (1/1) ... [2023-08-25 05:23:18,332 INFO L138 Inliner]: procedures = 22, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 108 [2023-08-25 05:23:18,332 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 05:23:18,333 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 05:23:18,333 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 05:23:18,334 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 05:23:18,340 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:23:18" (1/1) ... [2023-08-25 05:23:18,341 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:23:18" (1/1) ... [2023-08-25 05:23:18,353 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:23:18" (1/1) ... [2023-08-25 05:23:18,354 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:23:18" (1/1) ... [2023-08-25 05:23:18,363 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:23:18" (1/1) ... [2023-08-25 05:23:18,365 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:23:18" (1/1) ... [2023-08-25 05:23:18,367 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:23:18" (1/1) ... [2023-08-25 05:23:18,367 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:23:18" (1/1) ... [2023-08-25 05:23:18,369 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 05:23:18,370 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 05:23:18,370 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 05:23:18,370 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 05:23:18,371 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:23:18" (1/1) ... [2023-08-25 05:23:18,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 05:23:18,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:23:18,416 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 05:23:18,445 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 05:23:18,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 05:23:18,470 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-25 05:23:18,470 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-25 05:23:18,470 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-25 05:23:18,470 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-25 05:23:18,471 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-25 05:23:18,471 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-25 05:23:18,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 05:23:18,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 05:23:18,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 05:23:18,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 05:23:18,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 05:23:18,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 05:23:18,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 05:23:18,473 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 05:23:18,567 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 05:23:18,569 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 05:23:18,881 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 05:23:18,887 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 05:23:18,887 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-25 05:23:18,889 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 05:23:18 BoogieIcfgContainer [2023-08-25 05:23:18,889 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 05:23:18,890 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 05:23:18,890 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 05:23:18,892 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 05:23:18,899 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 05:23:18" (1/3) ... [2023-08-25 05:23:18,899 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a91fb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 05:23:18, skipping insertion in model container [2023-08-25 05:23:18,899 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:23:18" (2/3) ... [2023-08-25 05:23:18,900 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a91fb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 05:23:18, skipping insertion in model container [2023-08-25 05:23:18,900 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 05:23:18" (3/3) ... [2023-08-25 05:23:18,901 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-dist.wvr.c [2023-08-25 05:23:18,913 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 05:23:18,913 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2023-08-25 05:23:18,913 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 05:23:18,979 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-25 05:23:19,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 199 places, 196 transitions, 416 flow [2023-08-25 05:23:19,090 INFO L124 PetriNetUnfolderBase]: 7/193 cut-off events. [2023-08-25 05:23:19,091 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-25 05:23:19,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 193 events. 7/193 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 278 event pairs, 0 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 111. Up to 2 conditions per place. [2023-08-25 05:23:19,098 INFO L82 GeneralOperation]: Start removeDead. Operand has 199 places, 196 transitions, 416 flow [2023-08-25 05:23:19,104 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 185 places, 182 transitions, 382 flow [2023-08-25 05:23:19,107 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 05:23:19,124 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 185 places, 182 transitions, 382 flow [2023-08-25 05:23:19,128 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 185 places, 182 transitions, 382 flow [2023-08-25 05:23:19,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 182 transitions, 382 flow [2023-08-25 05:23:19,159 INFO L124 PetriNetUnfolderBase]: 7/182 cut-off events. [2023-08-25 05:23:19,159 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-25 05:23:19,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 182 events. 7/182 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 277 event pairs, 0 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 111. Up to 2 conditions per place. [2023-08-25 05:23:19,166 INFO L119 LiptonReduction]: Number of co-enabled transitions 7812 [2023-08-25 05:23:21,949 INFO L134 LiptonReduction]: Checked pairs total: 20334 [2023-08-25 05:23:21,949 INFO L136 LiptonReduction]: Total number of compositions: 180 [2023-08-25 05:23:21,958 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 05:23:21,962 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;@613ffc5d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 05:23:21,963 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2023-08-25 05:23:21,963 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 05:23:21,963 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-25 05:23:21,963 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 05:23:21,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:23:21,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-25 05:23:21,964 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2023-08-25 05:23:21,967 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:23:21,967 INFO L85 PathProgramCache]: Analyzing trace with hash 714, now seen corresponding path program 1 times [2023-08-25 05:23:21,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:23:21,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109691224] [2023-08-25 05:23:21,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:23:21,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:23:22,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:23:22,029 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 05:23:22,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:23:22,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109691224] [2023-08-25 05:23:22,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109691224] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 05:23:22,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 05:23:22,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-25 05:23:22,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047936973] [2023-08-25 05:23:22,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 05:23:22,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 05:23:22,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:23:22,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 05:23:22,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 05:23:22,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 376 [2023-08-25 05:23:22,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 134 flow. Second operand has 2 states, 2 states have (on average 185.5) internal successors, (371), 2 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:22,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:23:22,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 376 [2023-08-25 05:23:22,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:23:22,174 INFO L124 PetriNetUnfolderBase]: 654/1299 cut-off events. [2023-08-25 05:23:22,174 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-08-25 05:23:22,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2268 conditions, 1299 events. 654/1299 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 7821 event pairs, 370 based on Foata normal form. 416/1325 useless extension candidates. Maximal degree in co-relation 1932. Up to 892 conditions per place. [2023-08-25 05:23:22,181 INFO L140 encePairwiseOnDemand]: 358/376 looper letters, 23 selfloop transitions, 0 changer transitions 0/40 dead transitions. [2023-08-25 05:23:22,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 40 transitions, 144 flow [2023-08-25 05:23:22,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 05:23:22,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 05:23:22,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 411 transitions. [2023-08-25 05:23:22,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5465425531914894 [2023-08-25 05:23:22,190 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 411 transitions. [2023-08-25 05:23:22,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 411 transitions. [2023-08-25 05:23:22,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:23:22,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 411 transitions. [2023-08-25 05:23:22,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 205.5) internal successors, (411), 2 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:22,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 376.0) internal successors, (1128), 3 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:22,198 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 376.0) internal successors, (1128), 3 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:22,199 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 134 flow. Second operand 2 states and 411 transitions. [2023-08-25 05:23:22,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 40 transitions, 144 flow [2023-08-25 05:23:22,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 40 transitions, 132 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-25 05:23:22,202 INFO L231 Difference]: Finished difference. Result has 42 places, 40 transitions, 86 flow [2023-08-25 05:23:22,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=86, PETRI_PLACES=42, PETRI_TRANSITIONS=40} [2023-08-25 05:23:22,205 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -20 predicate places. [2023-08-25 05:23:22,206 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 40 transitions, 86 flow [2023-08-25 05:23:22,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 185.5) internal successors, (371), 2 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:22,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:23:22,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-25 05:23:22,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 05:23:22,206 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2023-08-25 05:23:22,207 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:23:22,207 INFO L85 PathProgramCache]: Analyzing trace with hash 676583453, now seen corresponding path program 1 times [2023-08-25 05:23:22,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:23:22,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776336036] [2023-08-25 05:23:22,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:23:22,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:23:22,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:23:22,267 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 05:23:22,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:23:22,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776336036] [2023-08-25 05:23:22,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776336036] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 05:23:22,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 05:23:22,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 05:23:22,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217209380] [2023-08-25 05:23:22,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 05:23:22,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 05:23:22,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:23:22,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 05:23:22,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 05:23:22,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 376 [2023-08-25 05:23:22,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:22,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:23:22,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 376 [2023-08-25 05:23:22,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:23:22,375 INFO L124 PetriNetUnfolderBase]: 1030/1674 cut-off events. [2023-08-25 05:23:22,375 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-08-25 05:23:22,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3148 conditions, 1674 events. 1030/1674 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 9231 event pairs, 222 based on Foata normal form. 0/1357 useless extension candidates. Maximal degree in co-relation 3145. Up to 1407 conditions per place. [2023-08-25 05:23:22,382 INFO L140 encePairwiseOnDemand]: 372/376 looper letters, 34 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2023-08-25 05:23:22,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 48 transitions, 176 flow [2023-08-25 05:23:22,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 05:23:22,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 05:23:22,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 566 transitions. [2023-08-25 05:23:22,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.50177304964539 [2023-08-25 05:23:22,384 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 566 transitions. [2023-08-25 05:23:22,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 566 transitions. [2023-08-25 05:23:22,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:23:22,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 566 transitions. [2023-08-25 05:23:22,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:22,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:22,388 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:22,388 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 86 flow. Second operand 3 states and 566 transitions. [2023-08-25 05:23:22,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 48 transitions, 176 flow [2023-08-25 05:23:22,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 48 transitions, 176 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 05:23:22,389 INFO L231 Difference]: Finished difference. Result has 43 places, 40 transitions, 96 flow [2023-08-25 05:23:22,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=43, PETRI_TRANSITIONS=40} [2023-08-25 05:23:22,390 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -19 predicate places. [2023-08-25 05:23:22,390 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 40 transitions, 96 flow [2023-08-25 05:23:22,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:22,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:23:22,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:23:22,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 05:23:22,391 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2023-08-25 05:23:22,391 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:23:22,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1656816809, now seen corresponding path program 1 times [2023-08-25 05:23:22,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:23:22,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864823823] [2023-08-25 05:23:22,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:23:22,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:23:22,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:23:22,424 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 05:23:22,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:23:22,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864823823] [2023-08-25 05:23:22,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864823823] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 05:23:22,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 05:23:22,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 05:23:22,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863138343] [2023-08-25 05:23:22,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 05:23:22,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 05:23:22,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:23:22,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 05:23:22,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 05:23:22,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 376 [2023-08-25 05:23:22,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:22,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:23:22,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 376 [2023-08-25 05:23:22,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:23:22,638 INFO L124 PetriNetUnfolderBase]: 1361/2354 cut-off events. [2023-08-25 05:23:22,639 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-08-25 05:23:22,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4386 conditions, 2354 events. 1361/2354 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 14501 event pairs, 230 based on Foata normal form. 0/1770 useless extension candidates. Maximal degree in co-relation 4382. Up to 1558 conditions per place. [2023-08-25 05:23:22,649 INFO L140 encePairwiseOnDemand]: 370/376 looper letters, 42 selfloop transitions, 3 changer transitions 0/57 dead transitions. [2023-08-25 05:23:22,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 57 transitions, 225 flow [2023-08-25 05:23:22,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 05:23:22,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 05:23:22,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 567 transitions. [2023-08-25 05:23:22,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026595744680851 [2023-08-25 05:23:22,651 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 567 transitions. [2023-08-25 05:23:22,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 567 transitions. [2023-08-25 05:23:22,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:23:22,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 567 transitions. [2023-08-25 05:23:22,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:22,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:22,655 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:22,655 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 96 flow. Second operand 3 states and 567 transitions. [2023-08-25 05:23:22,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 57 transitions, 225 flow [2023-08-25 05:23:22,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 57 transitions, 225 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 05:23:22,657 INFO L231 Difference]: Finished difference. Result has 43 places, 40 transitions, 111 flow [2023-08-25 05:23:22,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=111, PETRI_PLACES=43, PETRI_TRANSITIONS=40} [2023-08-25 05:23:22,658 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -19 predicate places. [2023-08-25 05:23:22,658 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 40 transitions, 111 flow [2023-08-25 05:23:22,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:22,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:23:22,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:23:22,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 05:23:22,662 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2023-08-25 05:23:22,663 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:23:22,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1874264588, now seen corresponding path program 1 times [2023-08-25 05:23:22,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:23:22,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929089500] [2023-08-25 05:23:22,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:23:22,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:23:22,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:23:22,720 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 05:23:22,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:23:22,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929089500] [2023-08-25 05:23:22,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929089500] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 05:23:22,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 05:23:22,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 05:23:22,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123402775] [2023-08-25 05:23:22,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 05:23:22,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 05:23:22,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:23:22,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 05:23:22,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 05:23:22,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 376 [2023-08-25 05:23:22,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:22,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:23:22,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 376 [2023-08-25 05:23:22,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:23:22,841 INFO L124 PetriNetUnfolderBase]: 1414/2357 cut-off events. [2023-08-25 05:23:22,841 INFO L125 PetriNetUnfolderBase]: For 169/169 co-relation queries the response was YES. [2023-08-25 05:23:22,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4907 conditions, 2357 events. 1414/2357 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 13398 event pairs, 287 based on Foata normal form. 0/1925 useless extension candidates. Maximal degree in co-relation 4902. Up to 1865 conditions per place. [2023-08-25 05:23:22,851 INFO L140 encePairwiseOnDemand]: 372/376 looper letters, 36 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2023-08-25 05:23:22,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 50 transitions, 214 flow [2023-08-25 05:23:22,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 05:23:22,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 05:23:22,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 566 transitions. [2023-08-25 05:23:22,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.50177304964539 [2023-08-25 05:23:22,853 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 566 transitions. [2023-08-25 05:23:22,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 566 transitions. [2023-08-25 05:23:22,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:23:22,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 566 transitions. [2023-08-25 05:23:22,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:22,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:22,857 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:22,857 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 111 flow. Second operand 3 states and 566 transitions. [2023-08-25 05:23:22,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 50 transitions, 214 flow [2023-08-25 05:23:22,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 50 transitions, 214 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 05:23:22,859 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 121 flow [2023-08-25 05:23:22,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=121, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2023-08-25 05:23:22,861 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -18 predicate places. [2023-08-25 05:23:22,861 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 121 flow [2023-08-25 05:23:22,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:22,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:23:22,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:23:22,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 05:23:22,862 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2023-08-25 05:23:22,862 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:23:22,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1052565032, now seen corresponding path program 1 times [2023-08-25 05:23:22,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:23:22,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013021140] [2023-08-25 05:23:22,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:23:22,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:23:22,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:23:23,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:23:23,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:23:23,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013021140] [2023-08-25 05:23:23,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013021140] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 05:23:23,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 05:23:23,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-25 05:23:23,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262623070] [2023-08-25 05:23:23,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 05:23:23,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 05:23:23,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:23:23,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 05:23:23,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 05:23:23,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 376 [2023-08-25 05:23:23,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 121 flow. Second operand has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:23,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:23:23,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 376 [2023-08-25 05:23:23,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:23:23,356 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([477] L57-2-->L57-3: Formula: (= |v_#race~b~0_4| 0) InVars {} OutVars{#race~b~0=|v_#race~b~0_4|} AuxVars[] AssignedVars[#race~b~0][33], [40#L74-4true, Black: 205#true, 220#true, Black: 210#true, 180#L41-1true, 12#L57-3true, 76#L49-1true, 207#(= |#race~a~0| 0), Black: 215#true, 202#true, 217#(= |#race~b~0| 0), 212#(= |#race~c~0| 0)]) [2023-08-25 05:23:23,356 INFO L294 olderBase$Statistics]: this new event has 20 ancestors and is cut-off event [2023-08-25 05:23:23,357 INFO L297 olderBase$Statistics]: existing Event has 22 ancestors and is cut-off event [2023-08-25 05:23:23,357 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2023-08-25 05:23:23,357 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2023-08-25 05:23:23,367 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([477] L57-2-->L57-3: Formula: (= |v_#race~b~0_4| 0) InVars {} OutVars{#race~b~0=|v_#race~b~0_4|} AuxVars[] AssignedVars[#race~b~0][33], [Black: 205#true, 220#true, Black: 210#true, 12#L57-3true, 180#L41-1true, 76#L49-1true, 207#(= |#race~a~0| 0), 98#L75-6true, Black: 215#true, 202#true, 217#(= |#race~b~0| 0), 212#(= |#race~c~0| 0)]) [2023-08-25 05:23:23,367 INFO L294 olderBase$Statistics]: this new event has 21 ancestors and is cut-off event [2023-08-25 05:23:23,367 INFO L297 olderBase$Statistics]: existing Event has 23 ancestors and is cut-off event [2023-08-25 05:23:23,367 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2023-08-25 05:23:23,367 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2023-08-25 05:23:23,391 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([447] L49-7-->L49-1: Formula: (= |v_#race~b~0_1| 0) InVars {} OutVars{#race~b~0=|v_#race~b~0_1|} AuxVars[] AssignedVars[#race~b~0][34], [40#L74-4true, Black: 205#true, 220#true, Black: 210#true, 180#L41-1true, 12#L57-3true, 76#L49-1true, 207#(= |#race~a~0| 0), Black: 215#true, 202#true, 217#(= |#race~b~0| 0), 212#(= |#race~c~0| 0)]) [2023-08-25 05:23:23,391 INFO L294 olderBase$Statistics]: this new event has 24 ancestors and is cut-off event [2023-08-25 05:23:23,391 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2023-08-25 05:23:23,391 INFO L297 olderBase$Statistics]: existing Event has 22 ancestors and is cut-off event [2023-08-25 05:23:23,391 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2023-08-25 05:23:23,395 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([447] L49-7-->L49-1: Formula: (= |v_#race~b~0_1| 0) InVars {} OutVars{#race~b~0=|v_#race~b~0_1|} AuxVars[] AssignedVars[#race~b~0][34], [Black: 205#true, 220#true, Black: 210#true, 180#L41-1true, 12#L57-3true, 76#L49-1true, 207#(= |#race~a~0| 0), 98#L75-6true, Black: 215#true, 202#true, 217#(= |#race~b~0| 0), 212#(= |#race~c~0| 0)]) [2023-08-25 05:23:23,395 INFO L294 olderBase$Statistics]: this new event has 25 ancestors and is cut-off event [2023-08-25 05:23:23,395 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2023-08-25 05:23:23,395 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2023-08-25 05:23:23,395 INFO L297 olderBase$Statistics]: existing Event has 23 ancestors and is cut-off event [2023-08-25 05:23:23,402 INFO L124 PetriNetUnfolderBase]: 1443/2450 cut-off events. [2023-08-25 05:23:23,402 INFO L125 PetriNetUnfolderBase]: For 101/101 co-relation queries the response was YES. [2023-08-25 05:23:23,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5035 conditions, 2450 events. 1443/2450 cut-off events. For 101/101 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 14729 event pairs, 290 based on Foata normal form. 1/1820 useless extension candidates. Maximal degree in co-relation 5029. Up to 1381 conditions per place. [2023-08-25 05:23:23,413 INFO L140 encePairwiseOnDemand]: 371/376 looper letters, 39 selfloop transitions, 4 changer transitions 1/60 dead transitions. [2023-08-25 05:23:23,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 60 transitions, 256 flow [2023-08-25 05:23:23,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 05:23:23,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 05:23:23,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 578 transitions. [2023-08-25 05:23:23,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5124113475177305 [2023-08-25 05:23:23,414 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 578 transitions. [2023-08-25 05:23:23,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 578 transitions. [2023-08-25 05:23:23,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:23:23,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 578 transitions. [2023-08-25 05:23:23,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:23,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:23,418 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:23,418 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 121 flow. Second operand 3 states and 578 transitions. [2023-08-25 05:23:23,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 60 transitions, 256 flow [2023-08-25 05:23:23,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 60 transitions, 256 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 05:23:23,419 INFO L231 Difference]: Finished difference. Result has 47 places, 43 transitions, 147 flow [2023-08-25 05:23:23,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=147, PETRI_PLACES=47, PETRI_TRANSITIONS=43} [2023-08-25 05:23:23,420 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -15 predicate places. [2023-08-25 05:23:23,420 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 43 transitions, 147 flow [2023-08-25 05:23:23,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:23,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:23:23,420 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:23:23,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-25 05:23:23,420 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2023-08-25 05:23:23,421 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:23:23,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1069225158, now seen corresponding path program 1 times [2023-08-25 05:23:23,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:23:23,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185495781] [2023-08-25 05:23:23,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:23:23,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:23:23,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:23:23,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:23:23,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:23:23,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185495781] [2023-08-25 05:23:23,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185495781] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 05:23:23,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 05:23:23,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-25 05:23:23,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581583548] [2023-08-25 05:23:23,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 05:23:23,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 05:23:23,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:23:23,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 05:23:23,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-25 05:23:23,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 376 [2023-08-25 05:23:23,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 43 transitions, 147 flow. Second operand has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:23,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:23:23,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 376 [2023-08-25 05:23:23,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:23:24,168 INFO L124 PetriNetUnfolderBase]: 2672/4355 cut-off events. [2023-08-25 05:23:24,168 INFO L125 PetriNetUnfolderBase]: For 725/779 co-relation queries the response was YES. [2023-08-25 05:23:24,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10148 conditions, 4355 events. 2672/4355 cut-off events. For 725/779 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 27698 event pairs, 794 based on Foata normal form. 22/3483 useless extension candidates. Maximal degree in co-relation 10140. Up to 1410 conditions per place. [2023-08-25 05:23:24,200 INFO L140 encePairwiseOnDemand]: 365/376 looper letters, 88 selfloop transitions, 13 changer transitions 0/114 dead transitions. [2023-08-25 05:23:24,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 114 transitions, 550 flow [2023-08-25 05:23:24,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-25 05:23:24,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-25 05:23:24,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1233 transitions. [2023-08-25 05:23:24,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4684650455927052 [2023-08-25 05:23:24,204 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1233 transitions. [2023-08-25 05:23:24,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1233 transitions. [2023-08-25 05:23:24,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:23:24,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1233 transitions. [2023-08-25 05:23:24,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 176.14285714285714) internal successors, (1233), 7 states have internal predecessors, (1233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:24,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 376.0) internal successors, (3008), 8 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:24,212 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 376.0) internal successors, (3008), 8 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:24,213 INFO L175 Difference]: Start difference. First operand has 47 places, 43 transitions, 147 flow. Second operand 7 states and 1233 transitions. [2023-08-25 05:23:24,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 114 transitions, 550 flow [2023-08-25 05:23:24,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 114 transitions, 537 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 05:23:24,218 INFO L231 Difference]: Finished difference. Result has 57 places, 54 transitions, 250 flow [2023-08-25 05:23:24,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=250, PETRI_PLACES=57, PETRI_TRANSITIONS=54} [2023-08-25 05:23:24,220 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -5 predicate places. [2023-08-25 05:23:24,220 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 54 transitions, 250 flow [2023-08-25 05:23:24,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:24,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:23:24,221 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:23:24,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-25 05:23:24,221 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2023-08-25 05:23:24,222 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:23:24,222 INFO L85 PathProgramCache]: Analyzing trace with hash 710002572, now seen corresponding path program 2 times [2023-08-25 05:23:24,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:23:24,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934498658] [2023-08-25 05:23:24,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:23:24,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:23:24,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:23:24,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:23:24,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:23:24,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934498658] [2023-08-25 05:23:24,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934498658] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:23:24,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618814584] [2023-08-25 05:23:24,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 05:23:24,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:23:24,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:23:24,507 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 05:23:24,556 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 05:23:24,691 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 05:23:24,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:23:24,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-25 05:23:24,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:23:24,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:23:24,932 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:23:25,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:23:25,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618814584] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-25 05:23:25,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-25 05:23:25,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 9] total 16 [2023-08-25 05:23:25,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400009166] [2023-08-25 05:23:25,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 05:23:25,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 05:23:25,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:23:25,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 05:23:25,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2023-08-25 05:23:25,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 376 [2023-08-25 05:23:25,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 54 transitions, 250 flow. Second operand has 6 states, 6 states have (on average 170.33333333333334) internal successors, (1022), 6 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:25,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:23:25,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 376 [2023-08-25 05:23:25,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:23:25,723 INFO L124 PetriNetUnfolderBase]: 4068/6896 cut-off events. [2023-08-25 05:23:25,723 INFO L125 PetriNetUnfolderBase]: For 6923/7386 co-relation queries the response was YES. [2023-08-25 05:23:25,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19680 conditions, 6896 events. 4068/6896 cut-off events. For 6923/7386 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 49091 event pairs, 658 based on Foata normal form. 68/6487 useless extension candidates. Maximal degree in co-relation 19667. Up to 1690 conditions per place. [2023-08-25 05:23:25,764 INFO L140 encePairwiseOnDemand]: 368/376 looper letters, 108 selfloop transitions, 36 changer transitions 0/159 dead transitions. [2023-08-25 05:23:25,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 159 transitions, 1002 flow [2023-08-25 05:23:25,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-25 05:23:25,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-25 05:23:25,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1612 transitions. [2023-08-25 05:23:25,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47635933806146574 [2023-08-25 05:23:25,767 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1612 transitions. [2023-08-25 05:23:25,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1612 transitions. [2023-08-25 05:23:25,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:23:25,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1612 transitions. [2023-08-25 05:23:25,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 179.11111111111111) internal successors, (1612), 9 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:25,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 376.0) internal successors, (3760), 10 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:25,774 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 376.0) internal successors, (3760), 10 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:25,774 INFO L175 Difference]: Start difference. First operand has 57 places, 54 transitions, 250 flow. Second operand 9 states and 1612 transitions. [2023-08-25 05:23:25,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 159 transitions, 1002 flow [2023-08-25 05:23:25,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 159 transitions, 991 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 05:23:25,780 INFO L231 Difference]: Finished difference. Result has 72 places, 84 transitions, 569 flow [2023-08-25 05:23:25,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=569, PETRI_PLACES=72, PETRI_TRANSITIONS=84} [2023-08-25 05:23:25,781 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 10 predicate places. [2023-08-25 05:23:25,781 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 84 transitions, 569 flow [2023-08-25 05:23:25,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 170.33333333333334) internal successors, (1022), 6 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:25,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:23:25,781 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:23:25,791 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 05:23:25,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:23:25,987 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2023-08-25 05:23:25,987 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:23:25,987 INFO L85 PathProgramCache]: Analyzing trace with hash -100708862, now seen corresponding path program 3 times [2023-08-25 05:23:25,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:23:25,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989648801] [2023-08-25 05:23:25,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:23:25,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:23:26,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:23:26,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:23:26,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:23:26,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989648801] [2023-08-25 05:23:26,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989648801] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 05:23:26,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 05:23:26,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-25 05:23:26,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900631081] [2023-08-25 05:23:26,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 05:23:26,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 05:23:26,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:23:26,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 05:23:26,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-25 05:23:26,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 376 [2023-08-25 05:23:26,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 84 transitions, 569 flow. Second operand has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:26,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:23:26,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 376 [2023-08-25 05:23:26,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:23:27,117 INFO L124 PetriNetUnfolderBase]: 5912/9501 cut-off events. [2023-08-25 05:23:27,117 INFO L125 PetriNetUnfolderBase]: For 35825/36644 co-relation queries the response was YES. [2023-08-25 05:23:27,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36140 conditions, 9501 events. 5912/9501 cut-off events. For 35825/36644 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 65229 event pairs, 1952 based on Foata normal form. 91/8794 useless extension candidates. Maximal degree in co-relation 36120. Up to 4477 conditions per place. [2023-08-25 05:23:27,196 INFO L140 encePairwiseOnDemand]: 366/376 looper letters, 127 selfloop transitions, 34 changer transitions 1/175 dead transitions. [2023-08-25 05:23:27,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 175 transitions, 1529 flow [2023-08-25 05:23:27,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-25 05:23:27,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-25 05:23:27,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1225 transitions. [2023-08-25 05:23:27,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4654255319148936 [2023-08-25 05:23:27,199 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1225 transitions. [2023-08-25 05:23:27,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1225 transitions. [2023-08-25 05:23:27,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:23:27,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1225 transitions. [2023-08-25 05:23:27,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 175.0) internal successors, (1225), 7 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:27,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 376.0) internal successors, (3008), 8 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:27,204 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 376.0) internal successors, (3008), 8 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:27,205 INFO L175 Difference]: Start difference. First operand has 72 places, 84 transitions, 569 flow. Second operand 7 states and 1225 transitions. [2023-08-25 05:23:27,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 175 transitions, 1529 flow [2023-08-25 05:23:27,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 175 transitions, 1529 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 05:23:27,248 INFO L231 Difference]: Finished difference. Result has 83 places, 108 transitions, 910 flow [2023-08-25 05:23:27,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=910, PETRI_PLACES=83, PETRI_TRANSITIONS=108} [2023-08-25 05:23:27,248 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 21 predicate places. [2023-08-25 05:23:27,249 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 108 transitions, 910 flow [2023-08-25 05:23:27,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:27,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:23:27,249 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:23:27,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-25 05:23:27,249 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2023-08-25 05:23:27,250 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:23:27,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1268717580, now seen corresponding path program 4 times [2023-08-25 05:23:27,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:23:27,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961262734] [2023-08-25 05:23:27,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:23:27,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:23:27,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:23:27,385 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:23:27,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:23:27,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961262734] [2023-08-25 05:23:27,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961262734] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 05:23:27,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 05:23:27,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-25 05:23:27,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503765128] [2023-08-25 05:23:27,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 05:23:27,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 05:23:27,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:23:27,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 05:23:27,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-25 05:23:27,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 376 [2023-08-25 05:23:27,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 108 transitions, 910 flow. Second operand has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:27,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:23:27,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 376 [2023-08-25 05:23:27,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:23:28,456 INFO L124 PetriNetUnfolderBase]: 6384/10573 cut-off events. [2023-08-25 05:23:28,456 INFO L125 PetriNetUnfolderBase]: For 55936/56831 co-relation queries the response was YES. [2023-08-25 05:23:28,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44381 conditions, 10573 events. 6384/10573 cut-off events. For 55936/56831 co-relation queries the response was YES. Maximal size of possible extension queue 599. Compared 76549 event pairs, 1993 based on Foata normal form. 78/9792 useless extension candidates. Maximal degree in co-relation 44355. Up to 5027 conditions per place. [2023-08-25 05:23:28,545 INFO L140 encePairwiseOnDemand]: 366/376 looper letters, 144 selfloop transitions, 44 changer transitions 1/202 dead transitions. [2023-08-25 05:23:28,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 202 transitions, 2036 flow [2023-08-25 05:23:28,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-25 05:23:28,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-25 05:23:28,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1225 transitions. [2023-08-25 05:23:28,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4654255319148936 [2023-08-25 05:23:28,548 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1225 transitions. [2023-08-25 05:23:28,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1225 transitions. [2023-08-25 05:23:28,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:23:28,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1225 transitions. [2023-08-25 05:23:28,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 175.0) internal successors, (1225), 7 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:28,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 376.0) internal successors, (3008), 8 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:28,553 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 376.0) internal successors, (3008), 8 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:28,553 INFO L175 Difference]: Start difference. First operand has 83 places, 108 transitions, 910 flow. Second operand 7 states and 1225 transitions. [2023-08-25 05:23:28,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 202 transitions, 2036 flow [2023-08-25 05:23:28,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 202 transitions, 1967 flow, removed 22 selfloop flow, removed 1 redundant places. [2023-08-25 05:23:28,696 INFO L231 Difference]: Finished difference. Result has 93 places, 131 transitions, 1272 flow [2023-08-25 05:23:28,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=848, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1272, PETRI_PLACES=93, PETRI_TRANSITIONS=131} [2023-08-25 05:23:28,697 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 31 predicate places. [2023-08-25 05:23:28,697 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 131 transitions, 1272 flow [2023-08-25 05:23:28,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:28,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:23:28,697 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:23:28,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-25 05:23:28,698 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2023-08-25 05:23:28,698 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:23:28,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1303714032, now seen corresponding path program 1 times [2023-08-25 05:23:28,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:23:28,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196867099] [2023-08-25 05:23:28,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:23:28,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:23:28,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:23:28,880 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:23:28,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:23:28,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196867099] [2023-08-25 05:23:28,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196867099] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:23:28,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318818719] [2023-08-25 05:23:28,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:23:28,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:23:28,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:23:28,885 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 05:23:28,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-25 05:23:29,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:23:29,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-25 05:23:29,006 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:23:29,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:23:29,081 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:23:29,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:23:29,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318818719] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-25 05:23:29,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-25 05:23:29,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 7] total 13 [2023-08-25 05:23:29,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406652410] [2023-08-25 05:23:29,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 05:23:29,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 05:23:29,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:23:29,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 05:23:29,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-08-25 05:23:29,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 376 [2023-08-25 05:23:29,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 131 transitions, 1272 flow. Second operand has 6 states, 6 states have (on average 170.5) internal successors, (1023), 6 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:29,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:23:29,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 376 [2023-08-25 05:23:29,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:23:30,721 INFO L124 PetriNetUnfolderBase]: 8457/13921 cut-off events. [2023-08-25 05:23:30,722 INFO L125 PetriNetUnfolderBase]: For 91992/93343 co-relation queries the response was YES. [2023-08-25 05:23:30,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63085 conditions, 13921 events. 8457/13921 cut-off events. For 91992/93343 co-relation queries the response was YES. Maximal size of possible extension queue 818. Compared 105081 event pairs, 1221 based on Foata normal form. 181/12792 useless extension candidates. Maximal degree in co-relation 63053. Up to 3595 conditions per place. [2023-08-25 05:23:30,897 INFO L140 encePairwiseOnDemand]: 368/376 looper letters, 309 selfloop transitions, 58 changer transitions 0/384 dead transitions. [2023-08-25 05:23:30,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 384 transitions, 4410 flow [2023-08-25 05:23:30,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-25 05:23:30,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-25 05:23:30,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1627 transitions. [2023-08-25 05:23:30,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4807919621749409 [2023-08-25 05:23:30,902 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1627 transitions. [2023-08-25 05:23:30,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1627 transitions. [2023-08-25 05:23:30,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:23:30,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1627 transitions. [2023-08-25 05:23:30,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 180.77777777777777) internal successors, (1627), 9 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:30,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 376.0) internal successors, (3760), 10 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:30,908 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 376.0) internal successors, (3760), 10 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:30,908 INFO L175 Difference]: Start difference. First operand has 93 places, 131 transitions, 1272 flow. Second operand 9 states and 1627 transitions. [2023-08-25 05:23:30,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 384 transitions, 4410 flow [2023-08-25 05:23:31,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 384 transitions, 4274 flow, removed 68 selfloop flow, removed 0 redundant places. [2023-08-25 05:23:31,183 INFO L231 Difference]: Finished difference. Result has 108 places, 170 transitions, 1866 flow [2023-08-25 05:23:31,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=1196, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1866, PETRI_PLACES=108, PETRI_TRANSITIONS=170} [2023-08-25 05:23:31,184 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 46 predicate places. [2023-08-25 05:23:31,184 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 170 transitions, 1866 flow [2023-08-25 05:23:31,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 170.5) internal successors, (1023), 6 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:31,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:23:31,184 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:23:31,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-25 05:23:31,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-25 05:23:31,389 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2023-08-25 05:23:31,390 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:23:31,390 INFO L85 PathProgramCache]: Analyzing trace with hash 595730324, now seen corresponding path program 2 times [2023-08-25 05:23:31,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:23:31,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225932374] [2023-08-25 05:23:31,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:23:31,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:23:31,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:23:31,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:23:31,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:23:31,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225932374] [2023-08-25 05:23:31,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225932374] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 05:23:31,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 05:23:31,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-25 05:23:31,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706879195] [2023-08-25 05:23:31,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 05:23:31,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 05:23:31,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:23:31,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 05:23:31,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-25 05:23:31,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 376 [2023-08-25 05:23:31,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 170 transitions, 1866 flow. Second operand has 7 states, 7 states have (on average 166.14285714285714) internal successors, (1163), 7 states have internal predecessors, (1163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:31,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:23:31,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 376 [2023-08-25 05:23:31,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:23:32,946 INFO L124 PetriNetUnfolderBase]: 8739/14158 cut-off events. [2023-08-25 05:23:32,946 INFO L125 PetriNetUnfolderBase]: For 150147/152845 co-relation queries the response was YES. [2023-08-25 05:23:33,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73493 conditions, 14158 events. 8739/14158 cut-off events. For 150147/152845 co-relation queries the response was YES. Maximal size of possible extension queue 853. Compared 105825 event pairs, 2346 based on Foata normal form. 234/12984 useless extension candidates. Maximal degree in co-relation 73454. Up to 5597 conditions per place. [2023-08-25 05:23:33,151 INFO L140 encePairwiseOnDemand]: 366/376 looper letters, 222 selfloop transitions, 54 changer transitions 1/290 dead transitions. [2023-08-25 05:23:33,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 290 transitions, 3728 flow [2023-08-25 05:23:33,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-25 05:23:33,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-25 05:23:33,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1226 transitions. [2023-08-25 05:23:33,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46580547112462006 [2023-08-25 05:23:33,154 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1226 transitions. [2023-08-25 05:23:33,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1226 transitions. [2023-08-25 05:23:33,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:23:33,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1226 transitions. [2023-08-25 05:23:33,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 175.14285714285714) internal successors, (1226), 7 states have internal predecessors, (1226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:33,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 376.0) internal successors, (3008), 8 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:33,160 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 376.0) internal successors, (3008), 8 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:33,160 INFO L175 Difference]: Start difference. First operand has 108 places, 170 transitions, 1866 flow. Second operand 7 states and 1226 transitions. [2023-08-25 05:23:33,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 290 transitions, 3728 flow [2023-08-25 05:23:33,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 290 transitions, 3494 flow, removed 117 selfloop flow, removed 0 redundant places. [2023-08-25 05:23:33,996 INFO L231 Difference]: Finished difference. Result has 118 places, 185 transitions, 2153 flow [2023-08-25 05:23:33,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=1758, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2153, PETRI_PLACES=118, PETRI_TRANSITIONS=185} [2023-08-25 05:23:33,996 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 56 predicate places. [2023-08-25 05:23:33,996 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 185 transitions, 2153 flow [2023-08-25 05:23:33,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 166.14285714285714) internal successors, (1163), 7 states have internal predecessors, (1163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:33,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:23:33,997 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:23:33,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-25 05:23:33,997 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2023-08-25 05:23:33,997 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:23:33,997 INFO L85 PathProgramCache]: Analyzing trace with hash -2042910758, now seen corresponding path program 5 times [2023-08-25 05:23:33,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:23:33,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828152848] [2023-08-25 05:23:33,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:23:33,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:23:34,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:23:34,149 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:23:34,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:23:34,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828152848] [2023-08-25 05:23:34,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828152848] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 05:23:34,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 05:23:34,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-25 05:23:34,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931203982] [2023-08-25 05:23:34,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 05:23:34,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-25 05:23:34,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:23:34,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-25 05:23:34,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-08-25 05:23:34,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 376 [2023-08-25 05:23:34,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 185 transitions, 2153 flow. Second operand has 8 states, 8 states have (on average 165.625) internal successors, (1325), 8 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:34,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:23:34,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 376 [2023-08-25 05:23:34,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:23:37,051 INFO L124 PetriNetUnfolderBase]: 12807/20591 cut-off events. [2023-08-25 05:23:37,051 INFO L125 PetriNetUnfolderBase]: For 219020/221872 co-relation queries the response was YES. [2023-08-25 05:23:37,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106150 conditions, 20591 events. 12807/20591 cut-off events. For 219020/221872 co-relation queries the response was YES. Maximal size of possible extension queue 1023. Compared 157484 event pairs, 2788 based on Foata normal form. 317/19103 useless extension candidates. Maximal degree in co-relation 106106. Up to 7861 conditions per place. [2023-08-25 05:23:37,230 INFO L140 encePairwiseOnDemand]: 366/376 looper letters, 257 selfloop transitions, 152 changer transitions 0/422 dead transitions. [2023-08-25 05:23:37,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 422 transitions, 5631 flow [2023-08-25 05:23:37,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-25 05:23:37,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-25 05:23:37,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1579 transitions. [2023-08-25 05:23:37,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666075650118203 [2023-08-25 05:23:37,238 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1579 transitions. [2023-08-25 05:23:37,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1579 transitions. [2023-08-25 05:23:37,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:23:37,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1579 transitions. [2023-08-25 05:23:37,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 175.44444444444446) internal successors, (1579), 9 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:37,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 376.0) internal successors, (3760), 10 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:37,253 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 376.0) internal successors, (3760), 10 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:37,253 INFO L175 Difference]: Start difference. First operand has 118 places, 185 transitions, 2153 flow. Second operand 9 states and 1579 transitions. [2023-08-25 05:23:37,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 422 transitions, 5631 flow [2023-08-25 05:23:37,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 422 transitions, 5459 flow, removed 46 selfloop flow, removed 1 redundant places. [2023-08-25 05:23:37,862 INFO L231 Difference]: Finished difference. Result has 132 places, 273 transitions, 3825 flow [2023-08-25 05:23:37,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=2029, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3825, PETRI_PLACES=132, PETRI_TRANSITIONS=273} [2023-08-25 05:23:37,862 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 70 predicate places. [2023-08-25 05:23:37,862 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 273 transitions, 3825 flow [2023-08-25 05:23:37,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 165.625) internal successors, (1325), 8 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:37,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:23:37,863 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:23:37,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-25 05:23:37,863 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2023-08-25 05:23:37,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:23:37,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1646230868, now seen corresponding path program 3 times [2023-08-25 05:23:37,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:23:37,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198896328] [2023-08-25 05:23:37,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:23:37,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:23:37,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:23:38,108 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:23:38,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:23:38,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198896328] [2023-08-25 05:23:38,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198896328] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 05:23:38,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 05:23:38,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-25 05:23:38,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997222828] [2023-08-25 05:23:38,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 05:23:38,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-25 05:23:38,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:23:38,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-25 05:23:38,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-25 05:23:38,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 376 [2023-08-25 05:23:38,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 273 transitions, 3825 flow. Second operand has 8 states, 8 states have (on average 165.75) internal successors, (1326), 8 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:38,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:23:38,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 376 [2023-08-25 05:23:38,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:23:41,619 INFO L124 PetriNetUnfolderBase]: 14399/24364 cut-off events. [2023-08-25 05:23:41,619 INFO L125 PetriNetUnfolderBase]: For 318730/323789 co-relation queries the response was YES. [2023-08-25 05:23:41,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135162 conditions, 24364 events. 14399/24364 cut-off events. For 318730/323789 co-relation queries the response was YES. Maximal size of possible extension queue 1216. Compared 200084 event pairs, 1342 based on Foata normal form. 734/23420 useless extension candidates. Maximal degree in co-relation 135110. Up to 4942 conditions per place. [2023-08-25 05:23:41,981 INFO L140 encePairwiseOnDemand]: 365/376 looper letters, 514 selfloop transitions, 159 changer transitions 0/686 dead transitions. [2023-08-25 05:23:41,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 686 transitions, 10646 flow [2023-08-25 05:23:41,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-25 05:23:41,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-25 05:23:41,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2641 transitions. [2023-08-25 05:23:42,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4682624113475177 [2023-08-25 05:23:42,013 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2641 transitions. [2023-08-25 05:23:42,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2641 transitions. [2023-08-25 05:23:42,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:23:42,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2641 transitions. [2023-08-25 05:23:42,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 176.06666666666666) internal successors, (2641), 15 states have internal predecessors, (2641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:42,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 376.0) internal successors, (6016), 16 states have internal predecessors, (6016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:42,035 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 376.0) internal successors, (6016), 16 states have internal predecessors, (6016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:42,035 INFO L175 Difference]: Start difference. First operand has 132 places, 273 transitions, 3825 flow. Second operand 15 states and 2641 transitions. [2023-08-25 05:23:42,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 686 transitions, 10646 flow [2023-08-25 05:23:44,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 686 transitions, 10032 flow, removed 307 selfloop flow, removed 0 redundant places. [2023-08-25 05:23:44,276 INFO L231 Difference]: Finished difference. Result has 158 places, 363 transitions, 5689 flow [2023-08-25 05:23:44,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=3619, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=5689, PETRI_PLACES=158, PETRI_TRANSITIONS=363} [2023-08-25 05:23:44,277 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 96 predicate places. [2023-08-25 05:23:44,277 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 363 transitions, 5689 flow [2023-08-25 05:23:44,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 165.75) internal successors, (1326), 8 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:44,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:23:44,277 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:23:44,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-25 05:23:44,277 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2023-08-25 05:23:44,277 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:23:44,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1221351824, now seen corresponding path program 4 times [2023-08-25 05:23:44,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:23:44,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095886490] [2023-08-25 05:23:44,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:23:44,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:23:44,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:23:44,409 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:23:44,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:23:44,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095886490] [2023-08-25 05:23:44,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095886490] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 05:23:44,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 05:23:44,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-25 05:23:44,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718079809] [2023-08-25 05:23:44,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 05:23:44,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 05:23:44,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:23:44,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 05:23:44,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-25 05:23:44,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 376 [2023-08-25 05:23:44,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 363 transitions, 5689 flow. Second operand has 7 states, 7 states have (on average 166.14285714285714) internal successors, (1163), 7 states have internal predecessors, (1163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:44,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:23:44,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 376 [2023-08-25 05:23:44,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:23:48,154 INFO L124 PetriNetUnfolderBase]: 14978/24177 cut-off events. [2023-08-25 05:23:48,155 INFO L125 PetriNetUnfolderBase]: For 340384/349248 co-relation queries the response was YES. [2023-08-25 05:23:48,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142900 conditions, 24177 events. 14978/24177 cut-off events. For 340384/349248 co-relation queries the response was YES. Maximal size of possible extension queue 1246. Compared 190762 event pairs, 4691 based on Foata normal form. 682/22443 useless extension candidates. Maximal degree in co-relation 142836. Up to 12615 conditions per place. [2023-08-25 05:23:48,484 INFO L140 encePairwiseOnDemand]: 366/376 looper letters, 367 selfloop transitions, 139 changer transitions 1/520 dead transitions. [2023-08-25 05:23:48,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 520 transitions, 8980 flow [2023-08-25 05:23:48,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-25 05:23:48,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-25 05:23:48,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1222 transitions. [2023-08-25 05:23:48,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2023-08-25 05:23:48,487 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1222 transitions. [2023-08-25 05:23:48,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1222 transitions. [2023-08-25 05:23:48,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:23:48,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1222 transitions. [2023-08-25 05:23:48,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 174.57142857142858) internal successors, (1222), 7 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:48,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 376.0) internal successors, (3008), 8 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:48,492 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 376.0) internal successors, (3008), 8 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:48,492 INFO L175 Difference]: Start difference. First operand has 158 places, 363 transitions, 5689 flow. Second operand 7 states and 1222 transitions. [2023-08-25 05:23:48,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 520 transitions, 8980 flow [2023-08-25 05:23:49,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 520 transitions, 8838 flow, removed 71 selfloop flow, removed 0 redundant places. [2023-08-25 05:23:49,658 INFO L231 Difference]: Finished difference. Result has 167 places, 380 transitions, 6264 flow [2023-08-25 05:23:49,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=5563, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6264, PETRI_PLACES=167, PETRI_TRANSITIONS=380} [2023-08-25 05:23:49,659 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 105 predicate places. [2023-08-25 05:23:49,659 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 380 transitions, 6264 flow [2023-08-25 05:23:49,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 166.14285714285714) internal successors, (1163), 7 states have internal predecessors, (1163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:49,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:23:49,659 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:23:49,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-25 05:23:49,659 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2023-08-25 05:23:49,663 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:23:49,663 INFO L85 PathProgramCache]: Analyzing trace with hash -642904836, now seen corresponding path program 6 times [2023-08-25 05:23:49,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:23:49,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166920724] [2023-08-25 05:23:49,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:23:49,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:23:49,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:23:49,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:23:49,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:23:49,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166920724] [2023-08-25 05:23:49,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166920724] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:23:49,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555268066] [2023-08-25 05:23:49,882 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 05:23:49,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:23:49,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:23:49,897 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 05:23:49,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-25 05:23:50,042 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-25 05:23:50,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:23:50,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-25 05:23:50,045 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:23:50,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:23:50,141 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:23:50,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:23:50,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555268066] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-25 05:23:50,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-25 05:23:50,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 7] total 12 [2023-08-25 05:23:50,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830359636] [2023-08-25 05:23:50,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 05:23:50,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 05:23:50,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:23:50,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 05:23:50,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-08-25 05:23:50,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 376 [2023-08-25 05:23:50,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 380 transitions, 6264 flow. Second operand has 6 states, 6 states have (on average 170.33333333333334) internal successors, (1022), 6 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:50,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:23:50,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 376 [2023-08-25 05:23:50,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:23:54,970 INFO L124 PetriNetUnfolderBase]: 16072/27252 cut-off events. [2023-08-25 05:23:54,970 INFO L125 PetriNetUnfolderBase]: For 365109/371958 co-relation queries the response was YES. [2023-08-25 05:23:55,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156401 conditions, 27252 events. 16072/27252 cut-off events. For 365109/371958 co-relation queries the response was YES. Maximal size of possible extension queue 1401. Compared 229143 event pairs, 1962 based on Foata normal form. 870/26102 useless extension candidates. Maximal degree in co-relation 156333. Up to 5512 conditions per place. [2023-08-25 05:23:55,412 INFO L140 encePairwiseOnDemand]: 368/376 looper letters, 411 selfloop transitions, 199 changer transitions 0/641 dead transitions. [2023-08-25 05:23:55,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 641 transitions, 10853 flow [2023-08-25 05:23:55,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-25 05:23:55,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-25 05:23:55,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1810 transitions. [2023-08-25 05:23:55,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48138297872340424 [2023-08-25 05:23:55,416 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1810 transitions. [2023-08-25 05:23:55,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1810 transitions. [2023-08-25 05:23:55,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:23:55,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1810 transitions. [2023-08-25 05:23:55,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 181.0) internal successors, (1810), 10 states have internal predecessors, (1810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:55,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 376.0) internal successors, (4136), 11 states have internal predecessors, (4136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:55,424 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 376.0) internal successors, (4136), 11 states have internal predecessors, (4136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:55,424 INFO L175 Difference]: Start difference. First operand has 167 places, 380 transitions, 6264 flow. Second operand 10 states and 1810 transitions. [2023-08-25 05:23:55,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 641 transitions, 10853 flow [2023-08-25 05:23:56,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 641 transitions, 10466 flow, removed 86 selfloop flow, removed 2 redundant places. [2023-08-25 05:23:56,867 INFO L231 Difference]: Finished difference. Result has 180 places, 450 transitions, 7789 flow [2023-08-25 05:23:56,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=5958, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7789, PETRI_PLACES=180, PETRI_TRANSITIONS=450} [2023-08-25 05:23:56,867 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 118 predicate places. [2023-08-25 05:23:56,867 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 450 transitions, 7789 flow [2023-08-25 05:23:56,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 170.33333333333334) internal successors, (1022), 6 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:56,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:23:56,877 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:23:56,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-25 05:23:57,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:23:57,085 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2023-08-25 05:23:57,086 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:23:57,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1213759802, now seen corresponding path program 7 times [2023-08-25 05:23:57,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:23:57,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473813398] [2023-08-25 05:23:57,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:23:57,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:23:57,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:23:57,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:23:57,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:23:57,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473813398] [2023-08-25 05:23:57,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473813398] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 05:23:57,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 05:23:57,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-25 05:23:57,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404793108] [2023-08-25 05:23:57,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 05:23:57,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 05:23:57,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:23:57,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 05:23:57,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-25 05:23:57,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 376 [2023-08-25 05:23:57,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 450 transitions, 7789 flow. Second operand has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:23:57,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:23:57,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 376 [2023-08-25 05:23:57,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:24:01,896 INFO L124 PetriNetUnfolderBase]: 16662/27073 cut-off events. [2023-08-25 05:24:01,896 INFO L125 PetriNetUnfolderBase]: For 449395/459622 co-relation queries the response was YES. [2023-08-25 05:24:02,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168861 conditions, 27073 events. 16662/27073 cut-off events. For 449395/459622 co-relation queries the response was YES. Maximal size of possible extension queue 1343. Compared 218951 event pairs, 4935 based on Foata normal form. 731/25406 useless extension candidates. Maximal degree in co-relation 168787. Up to 10257 conditions per place. [2023-08-25 05:24:02,320 INFO L140 encePairwiseOnDemand]: 366/376 looper letters, 440 selfloop transitions, 144 changer transitions 1/598 dead transitions. [2023-08-25 05:24:02,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 598 transitions, 11067 flow [2023-08-25 05:24:02,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-25 05:24:02,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-25 05:24:02,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1230 transitions. [2023-08-25 05:24:02,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4673252279635258 [2023-08-25 05:24:02,324 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1230 transitions. [2023-08-25 05:24:02,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1230 transitions. [2023-08-25 05:24:02,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:24:02,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1230 transitions. [2023-08-25 05:24:02,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 175.71428571428572) internal successors, (1230), 7 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:24:02,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 376.0) internal successors, (3008), 8 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:24:02,328 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 376.0) internal successors, (3008), 8 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:24:02,328 INFO L175 Difference]: Start difference. First operand has 180 places, 450 transitions, 7789 flow. Second operand 7 states and 1230 transitions. [2023-08-25 05:24:02,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 598 transitions, 11067 flow [2023-08-25 05:24:04,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 598 transitions, 10883 flow, removed 75 selfloop flow, removed 1 redundant places. [2023-08-25 05:24:04,706 INFO L231 Difference]: Finished difference. Result has 188 places, 458 transitions, 8156 flow [2023-08-25 05:24:04,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=7661, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8156, PETRI_PLACES=188, PETRI_TRANSITIONS=458} [2023-08-25 05:24:04,706 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 126 predicate places. [2023-08-25 05:24:04,706 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 458 transitions, 8156 flow [2023-08-25 05:24:04,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:24:04,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:24:04,707 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:24:04,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-25 05:24:04,707 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2023-08-25 05:24:04,708 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:24:04,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1182053850, now seen corresponding path program 8 times [2023-08-25 05:24:04,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:24:04,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123211348] [2023-08-25 05:24:04,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:24:04,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:24:04,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:24:04,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:24:04,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:24:04,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123211348] [2023-08-25 05:24:04,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123211348] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:24:04,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427314374] [2023-08-25 05:24:04,907 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 05:24:04,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:24:04,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:24:04,908 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 05:24:04,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-25 05:24:05,089 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 05:24:05,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:24:05,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-25 05:24:05,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:24:05,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:24:05,291 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:24:05,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:24:05,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427314374] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:24:05,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:24:05,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 23 [2023-08-25 05:24:05,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302179207] [2023-08-25 05:24:05,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:24:05,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-25 05:24:05,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:24:05,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-25 05:24:05,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2023-08-25 05:24:05,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 376 [2023-08-25 05:24:05,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 458 transitions, 8156 flow. Second operand has 23 states, 23 states have (on average 161.91304347826087) internal successors, (3724), 23 states have internal predecessors, (3724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:24:05,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:24:05,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 376 [2023-08-25 05:24:05,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:24:13,884 INFO L124 PetriNetUnfolderBase]: 24082/40274 cut-off events. [2023-08-25 05:24:13,885 INFO L125 PetriNetUnfolderBase]: For 626446/636924 co-relation queries the response was YES. [2023-08-25 05:24:14,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240583 conditions, 40274 events. 24082/40274 cut-off events. For 626446/636924 co-relation queries the response was YES. Maximal size of possible extension queue 2056. Compared 350618 event pairs, 2807 based on Foata normal form. 2608/40642 useless extension candidates. Maximal degree in co-relation 240506. Up to 8197 conditions per place. [2023-08-25 05:24:14,893 INFO L140 encePairwiseOnDemand]: 363/376 looper letters, 655 selfloop transitions, 871 changer transitions 3/1542 dead transitions. [2023-08-25 05:24:14,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 1542 transitions, 27649 flow [2023-08-25 05:24:14,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-08-25 05:24:14,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2023-08-25 05:24:14,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 8679 transitions. [2023-08-25 05:24:14,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45259699624530664 [2023-08-25 05:24:14,900 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 8679 transitions. [2023-08-25 05:24:14,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 8679 transitions. [2023-08-25 05:24:14,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:24:14,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 8679 transitions. [2023-08-25 05:24:14,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 170.1764705882353) internal successors, (8679), 51 states have internal predecessors, (8679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:24:14,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 376.0) internal successors, (19552), 52 states have internal predecessors, (19552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:24:14,923 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 376.0) internal successors, (19552), 52 states have internal predecessors, (19552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:24:14,924 INFO L175 Difference]: Start difference. First operand has 188 places, 458 transitions, 8156 flow. Second operand 51 states and 8679 transitions. [2023-08-25 05:24:14,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 1542 transitions, 27649 flow [2023-08-25 05:24:18,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 1542 transitions, 27121 flow, removed 37 selfloop flow, removed 3 redundant places. [2023-08-25 05:24:18,320 INFO L231 Difference]: Finished difference. Result has 266 places, 1111 transitions, 22745 flow [2023-08-25 05:24:18,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=7819, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=311, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=22745, PETRI_PLACES=266, PETRI_TRANSITIONS=1111} [2023-08-25 05:24:18,321 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 204 predicate places. [2023-08-25 05:24:18,321 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 1111 transitions, 22745 flow [2023-08-25 05:24:18,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 161.91304347826087) internal successors, (3724), 23 states have internal predecessors, (3724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:24:18,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:24:18,322 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:24:18,327 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-25 05:24:18,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-25 05:24:18,526 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2023-08-25 05:24:18,527 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:24:18,527 INFO L85 PathProgramCache]: Analyzing trace with hash 176568534, now seen corresponding path program 9 times [2023-08-25 05:24:18,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:24:18,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827220376] [2023-08-25 05:24:18,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:24:18,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:24:18,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:24:18,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:24:18,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:24:18,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827220376] [2023-08-25 05:24:18,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827220376] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:24:18,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361945493] [2023-08-25 05:24:18,665 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 05:24:18,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:24:18,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:24:18,681 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 05:24:18,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-25 05:24:18,864 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-25 05:24:18,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:24:18,865 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-25 05:24:18,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:24:18,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:24:18,952 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:24:26,909 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:24:26,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361945493] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:24:26,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:24:26,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2023-08-25 05:24:26,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509379716] [2023-08-25 05:24:26,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:24:26,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-25 05:24:26,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:24:26,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-25 05:24:26,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-08-25 05:24:26,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 376 [2023-08-25 05:24:26,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 1111 transitions, 22745 flow. Second operand has 14 states, 14 states have (on average 165.85714285714286) internal successors, (2322), 14 states have internal predecessors, (2322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:24:26,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:24:26,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 376 [2023-08-25 05:24:26,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:24:40,597 INFO L124 PetriNetUnfolderBase]: 27142/45874 cut-off events. [2023-08-25 05:24:40,597 INFO L125 PetriNetUnfolderBase]: For 1027641/1044185 co-relation queries the response was YES. [2023-08-25 05:24:41,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310420 conditions, 45874 events. 27142/45874 cut-off events. For 1027641/1044185 co-relation queries the response was YES. Maximal size of possible extension queue 2406. Compared 411911 event pairs, 3352 based on Foata normal form. 2110/45001 useless extension candidates. Maximal degree in co-relation 310313. Up to 9212 conditions per place. [2023-08-25 05:24:41,908 INFO L140 encePairwiseOnDemand]: 365/376 looper letters, 975 selfloop transitions, 737 changer transitions 0/1725 dead transitions. [2023-08-25 05:24:41,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 1725 transitions, 36465 flow [2023-08-25 05:24:41,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-25 05:24:41,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-25 05:24:41,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3316 transitions. [2023-08-25 05:24:41,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4641657334826428 [2023-08-25 05:24:41,912 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3316 transitions. [2023-08-25 05:24:41,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3316 transitions. [2023-08-25 05:24:41,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:24:41,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3316 transitions. [2023-08-25 05:24:41,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 174.52631578947367) internal successors, (3316), 19 states have internal predecessors, (3316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:24:41,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 376.0) internal successors, (7520), 20 states have internal predecessors, (7520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:24:41,920 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 376.0) internal successors, (7520), 20 states have internal predecessors, (7520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:24:41,920 INFO L175 Difference]: Start difference. First operand has 266 places, 1111 transitions, 22745 flow. Second operand 19 states and 3316 transitions. [2023-08-25 05:24:41,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 1725 transitions, 36465 flow [2023-08-25 05:24:54,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 1725 transitions, 32274 flow, removed 1675 selfloop flow, removed 4 redundant places. [2023-08-25 05:24:54,719 INFO L231 Difference]: Finished difference. Result has 286 places, 1308 transitions, 25574 flow [2023-08-25 05:24:54,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=19684, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=548, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=549, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=25574, PETRI_PLACES=286, PETRI_TRANSITIONS=1308} [2023-08-25 05:24:54,720 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 224 predicate places. [2023-08-25 05:24:54,720 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 1308 transitions, 25574 flow [2023-08-25 05:24:54,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 165.85714285714286) internal successors, (2322), 14 states have internal predecessors, (2322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:24:54,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:24:54,721 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:24:54,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-25 05:24:54,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-25 05:24:54,926 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2023-08-25 05:24:54,927 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:24:54,927 INFO L85 PathProgramCache]: Analyzing trace with hash -213047092, now seen corresponding path program 10 times [2023-08-25 05:24:54,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:24:54,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686206392] [2023-08-25 05:24:54,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:24:54,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:24:54,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:24:55,091 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:24:55,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:24:55,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686206392] [2023-08-25 05:24:55,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686206392] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 05:24:55,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 05:24:55,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-25 05:24:55,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538964807] [2023-08-25 05:24:55,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 05:24:55,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 05:24:55,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:24:55,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 05:24:55,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-25 05:24:55,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 376 [2023-08-25 05:24:55,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 1308 transitions, 25574 flow. Second operand has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:24:55,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:24:55,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 376 [2023-08-25 05:24:55,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:25:07,424 INFO L124 PetriNetUnfolderBase]: 27413/45726 cut-off events. [2023-08-25 05:25:07,424 INFO L125 PetriNetUnfolderBase]: For 1021532/1039835 co-relation queries the response was YES. [2023-08-25 05:25:08,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 311176 conditions, 45726 events. 27413/45726 cut-off events. For 1021532/1039835 co-relation queries the response was YES. Maximal size of possible extension queue 2356. Compared 406536 event pairs, 6358 based on Foata normal form. 1525/43971 useless extension candidates. Maximal degree in co-relation 311065. Up to 17479 conditions per place. [2023-08-25 05:25:08,685 INFO L140 encePairwiseOnDemand]: 366/376 looper letters, 1062 selfloop transitions, 352 changer transitions 1/1428 dead transitions. [2023-08-25 05:25:08,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 1428 transitions, 30419 flow [2023-08-25 05:25:08,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-25 05:25:08,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-25 05:25:08,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1230 transitions. [2023-08-25 05:25:08,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4673252279635258 [2023-08-25 05:25:08,687 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1230 transitions. [2023-08-25 05:25:08,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1230 transitions. [2023-08-25 05:25:08,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:25:08,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1230 transitions. [2023-08-25 05:25:08,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 175.71428571428572) internal successors, (1230), 7 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:25:08,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 376.0) internal successors, (3008), 8 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:25:08,689 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 376.0) internal successors, (3008), 8 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:25:08,689 INFO L175 Difference]: Start difference. First operand has 286 places, 1308 transitions, 25574 flow. Second operand 7 states and 1230 transitions. [2023-08-25 05:25:08,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 1428 transitions, 30419 flow [2023-08-25 05:25:26,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 1428 transitions, 29866 flow, removed 273 selfloop flow, removed 1 redundant places. [2023-08-25 05:25:26,493 INFO L231 Difference]: Finished difference. Result has 295 places, 1331 transitions, 26598 flow [2023-08-25 05:25:26,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=25069, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=329, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=956, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=26598, PETRI_PLACES=295, PETRI_TRANSITIONS=1331} [2023-08-25 05:25:26,494 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 233 predicate places. [2023-08-25 05:25:26,494 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 1331 transitions, 26598 flow [2023-08-25 05:25:26,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:25:26,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:25:26,494 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:25:26,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-25 05:25:26,495 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2023-08-25 05:25:26,495 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:25:26,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1278764344, now seen corresponding path program 5 times [2023-08-25 05:25:26,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:25:26,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048148512] [2023-08-25 05:25:26,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:25:26,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:25:26,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:25:26,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:25:26,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:25:26,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048148512] [2023-08-25 05:25:26,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048148512] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:25:26,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781457803] [2023-08-25 05:25:26,659 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 05:25:26,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:25:26,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:25:26,660 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 05:25:26,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-25 05:25:26,796 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 05:25:26,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:25:26,798 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-25 05:25:26,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:25:26,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:25:26,906 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:25:27,064 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:25:27,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781457803] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:25:27,065 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:25:27,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 18 [2023-08-25 05:25:27,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044384303] [2023-08-25 05:25:27,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:25:27,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-25 05:25:27,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:25:27,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-25 05:25:27,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2023-08-25 05:25:27,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 376 [2023-08-25 05:25:27,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 1331 transitions, 26598 flow. Second operand has 18 states, 18 states have (on average 164.94444444444446) internal successors, (2969), 18 states have internal predecessors, (2969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:25:27,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:25:27,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 376 [2023-08-25 05:25:27,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:25:44,215 INFO L124 PetriNetUnfolderBase]: 35735/58969 cut-off events. [2023-08-25 05:25:44,215 INFO L125 PetriNetUnfolderBase]: For 1307920/1326256 co-relation queries the response was YES. [2023-08-25 05:25:45,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 397852 conditions, 58969 events. 35735/58969 cut-off events. For 1307920/1326256 co-relation queries the response was YES. Maximal size of possible extension queue 2967. Compared 533480 event pairs, 5049 based on Foata normal form. 4648/59852 useless extension candidates. Maximal degree in co-relation 397737. Up to 10491 conditions per place. [2023-08-25 05:25:46,027 INFO L140 encePairwiseOnDemand]: 365/376 looper letters, 869 selfloop transitions, 1400 changer transitions 0/2282 dead transitions. [2023-08-25 05:25:46,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 2282 transitions, 46569 flow [2023-08-25 05:25:46,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-08-25 05:25:46,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-08-25 05:25:46,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 6898 transitions. [2023-08-25 05:25:46,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4586436170212766 [2023-08-25 05:25:46,057 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 6898 transitions. [2023-08-25 05:25:46,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 6898 transitions. [2023-08-25 05:25:46,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:25:46,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 6898 transitions. [2023-08-25 05:25:46,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 172.45) internal successors, (6898), 40 states have internal predecessors, (6898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:25:46,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 376.0) internal successors, (15416), 41 states have internal predecessors, (15416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:25:46,070 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 376.0) internal successors, (15416), 41 states have internal predecessors, (15416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:25:46,084 INFO L175 Difference]: Start difference. First operand has 295 places, 1331 transitions, 26598 flow. Second operand 40 states and 6898 transitions. [2023-08-25 05:25:46,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 2282 transitions, 46569 flow [2023-08-25 05:26:07,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 2282 transitions, 45848 flow, removed 85 selfloop flow, removed 2 redundant places. [2023-08-25 05:26:08,000 INFO L231 Difference]: Finished difference. Result has 356 places, 1900 transitions, 41088 flow [2023-08-25 05:26:08,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=26032, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=855, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=41088, PETRI_PLACES=356, PETRI_TRANSITIONS=1900} [2023-08-25 05:26:08,001 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 294 predicate places. [2023-08-25 05:26:08,002 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 1900 transitions, 41088 flow [2023-08-25 05:26:08,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 164.94444444444446) internal successors, (2969), 18 states have internal predecessors, (2969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:26:08,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:26:08,002 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:26:08,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-25 05:26:08,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:26:08,206 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2023-08-25 05:26:08,207 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:26:08,207 INFO L85 PathProgramCache]: Analyzing trace with hash 228663518, now seen corresponding path program 6 times [2023-08-25 05:26:08,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:26:08,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100228492] [2023-08-25 05:26:08,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:26:08,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:26:08,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:26:08,335 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:26:08,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:26:08,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100228492] [2023-08-25 05:26:08,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100228492] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:26:08,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337892232] [2023-08-25 05:26:08,335 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 05:26:08,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:26:08,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:26:08,362 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 05:26:08,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-25 05:26:08,483 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-25 05:26:08,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:26:08,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-25 05:26:08,485 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:26:08,554 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:26:08,554 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:26:08,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:26:08,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337892232] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-25 05:26:08,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-25 05:26:08,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 7] total 12 [2023-08-25 05:26:08,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445901503] [2023-08-25 05:26:08,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 05:26:08,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 05:26:08,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:26:08,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 05:26:08,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-08-25 05:26:08,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 376 [2023-08-25 05:26:08,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 1900 transitions, 41088 flow. Second operand has 6 states, 6 states have (on average 170.5) internal successors, (1023), 6 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:26:08,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:26:08,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 376 [2023-08-25 05:26:08,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:26:30,078 INFO L124 PetriNetUnfolderBase]: 35408/58792 cut-off events. [2023-08-25 05:26:30,078 INFO L125 PetriNetUnfolderBase]: For 1602571/1632050 co-relation queries the response was YES. [2023-08-25 05:26:32,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 427040 conditions, 58792 events. 35408/58792 cut-off events. For 1602571/1632050 co-relation queries the response was YES. Maximal size of possible extension queue 2949. Compared 533393 event pairs, 4262 based on Foata normal form. 2840/57476 useless extension candidates. Maximal degree in co-relation 426902. Up to 16734 conditions per place. [2023-08-25 05:26:32,545 INFO L140 encePairwiseOnDemand]: 368/376 looper letters, 1696 selfloop transitions, 827 changer transitions 0/2578 dead transitions. [2023-08-25 05:26:32,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 2578 transitions, 56810 flow [2023-08-25 05:26:32,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-25 05:26:32,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-25 05:26:32,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1624 transitions. [2023-08-25 05:26:32,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4799054373522459 [2023-08-25 05:26:32,569 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1624 transitions. [2023-08-25 05:26:32,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1624 transitions. [2023-08-25 05:26:32,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:26:32,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1624 transitions. [2023-08-25 05:26:32,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 180.44444444444446) internal successors, (1624), 9 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:26:32,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 376.0) internal successors, (3760), 10 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:26:32,572 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 376.0) internal successors, (3760), 10 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:26:32,573 INFO L175 Difference]: Start difference. First operand has 356 places, 1900 transitions, 41088 flow. Second operand 9 states and 1624 transitions. [2023-08-25 05:26:32,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 2578 transitions, 56810 flow [2023-08-25 05:27:09,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 2578 transitions, 54200 flow, removed 1305 selfloop flow, removed 0 redundant places. [2023-08-25 05:27:09,352 INFO L231 Difference]: Finished difference. Result has 368 places, 2012 transitions, 44175 flow [2023-08-25 05:27:09,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=39118, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1900, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=715, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=44175, PETRI_PLACES=368, PETRI_TRANSITIONS=2012} [2023-08-25 05:27:09,354 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 306 predicate places. [2023-08-25 05:27:09,354 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 2012 transitions, 44175 flow [2023-08-25 05:27:09,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 170.5) internal successors, (1023), 6 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:27:09,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:27:09,354 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:27:09,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-25 05:27:09,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:27:09,562 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2023-08-25 05:27:09,562 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:27:09,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1344966062, now seen corresponding path program 7 times [2023-08-25 05:27:09,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:27:09,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202181995] [2023-08-25 05:27:09,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:27:09,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:27:09,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:27:09,695 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:27:09,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:27:09,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202181995] [2023-08-25 05:27:09,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202181995] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 05:27:09,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 05:27:09,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-25 05:27:09,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11842052] [2023-08-25 05:27:09,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 05:27:09,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-25 05:27:09,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:27:09,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-25 05:27:09,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-08-25 05:27:09,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 376 [2023-08-25 05:27:09,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 2012 transitions, 44175 flow. Second operand has 8 states, 8 states have (on average 165.75) internal successors, (1326), 8 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:27:09,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:27:09,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 376 [2023-08-25 05:27:09,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:27:31,778 INFO L124 PetriNetUnfolderBase]: 35943/59920 cut-off events. [2023-08-25 05:27:31,778 INFO L125 PetriNetUnfolderBase]: For 1570916/1600605 co-relation queries the response was YES. [2023-08-25 05:27:33,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 434580 conditions, 59920 events. 35943/59920 cut-off events. For 1570916/1600605 co-relation queries the response was YES. Maximal size of possible extension queue 3059. Compared 548487 event pairs, 4818 based on Foata normal form. 3186/58711 useless extension candidates. Maximal degree in co-relation 434437. Up to 20435 conditions per place. [2023-08-25 05:27:34,258 INFO L140 encePairwiseOnDemand]: 365/376 looper letters, 1829 selfloop transitions, 523 changer transitions 0/2365 dead transitions. [2023-08-25 05:27:34,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 2365 transitions, 54301 flow [2023-08-25 05:27:34,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-25 05:27:34,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-25 05:27:34,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2104 transitions. [2023-08-25 05:27:34,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46631205673758863 [2023-08-25 05:27:34,261 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2104 transitions. [2023-08-25 05:27:34,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2104 transitions. [2023-08-25 05:27:34,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:27:34,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2104 transitions. [2023-08-25 05:27:34,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 175.33333333333334) internal successors, (2104), 12 states have internal predecessors, (2104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:27:34,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 376.0) internal successors, (4888), 13 states have internal predecessors, (4888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:27:34,282 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 376.0) internal successors, (4888), 13 states have internal predecessors, (4888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:27:34,282 INFO L175 Difference]: Start difference. First operand has 368 places, 2012 transitions, 44175 flow. Second operand 12 states and 2104 transitions. [2023-08-25 05:27:34,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 2365 transitions, 54301 flow [2023-08-25 05:28:04,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 2365 transitions, 53839 flow, removed 124 selfloop flow, removed 1 redundant places. [2023-08-25 05:28:04,804 INFO L231 Difference]: Finished difference. Result has 384 places, 2041 transitions, 46177 flow [2023-08-25 05:28:04,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=43718, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2012, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=494, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1504, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=46177, PETRI_PLACES=384, PETRI_TRANSITIONS=2041} [2023-08-25 05:28:04,806 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 322 predicate places. [2023-08-25 05:28:04,806 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 2041 transitions, 46177 flow [2023-08-25 05:28:04,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 165.75) internal successors, (1326), 8 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:28:04,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:28:04,807 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:28:04,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-25 05:28:04,807 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2023-08-25 05:28:04,807 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:28:04,807 INFO L85 PathProgramCache]: Analyzing trace with hash 443081694, now seen corresponding path program 11 times [2023-08-25 05:28:04,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:28:04,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367104793] [2023-08-25 05:28:04,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:28:04,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:28:04,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:28:04,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:28:04,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:28:04,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367104793] [2023-08-25 05:28:04,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367104793] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:28:04,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869840016] [2023-08-25 05:28:04,930 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 05:28:04,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:28:04,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:28:04,946 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 05:28:04,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-25 05:28:05,080 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 05:28:05,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:28:05,081 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-25 05:28:05,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:28:05,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:28:05,194 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:28:05,741 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:28:05,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869840016] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:28:05,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:28:05,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 18 [2023-08-25 05:28:05,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712113835] [2023-08-25 05:28:05,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:28:05,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-25 05:28:05,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:28:05,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-25 05:28:05,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2023-08-25 05:28:05,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 376 [2023-08-25 05:28:05,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 2041 transitions, 46177 flow. Second operand has 18 states, 18 states have (on average 165.22222222222223) internal successors, (2974), 18 states have internal predecessors, (2974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:28:05,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:28:05,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 376 [2023-08-25 05:28:05,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:28:35,992 INFO L124 PetriNetUnfolderBase]: 40650/68634 cut-off events. [2023-08-25 05:28:35,993 INFO L125 PetriNetUnfolderBase]: For 1943936/1979416 co-relation queries the response was YES. [2023-08-25 05:28:38,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 512453 conditions, 68634 events. 40650/68634 cut-off events. For 1943936/1979416 co-relation queries the response was YES. Maximal size of possible extension queue 3460. Compared 648590 event pairs, 3410 based on Foata normal form. 6983/71057 useless extension candidates. Maximal degree in co-relation 512305. Up to 12584 conditions per place. [2023-08-25 05:28:38,760 INFO L140 encePairwiseOnDemand]: 364/376 looper letters, 1543 selfloop transitions, 1609 changer transitions 0/3165 dead transitions. [2023-08-25 05:28:38,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 3165 transitions, 72241 flow [2023-08-25 05:28:38,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-08-25 05:28:38,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-08-25 05:28:38,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 6262 transitions. [2023-08-25 05:28:38,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46261820330969267 [2023-08-25 05:28:38,765 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 6262 transitions. [2023-08-25 05:28:38,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 6262 transitions. [2023-08-25 05:28:38,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:28:38,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 6262 transitions. [2023-08-25 05:28:38,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 173.94444444444446) internal successors, (6262), 36 states have internal predecessors, (6262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:28:38,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 376.0) internal successors, (13912), 37 states have internal predecessors, (13912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:28:38,776 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 376.0) internal successors, (13912), 37 states have internal predecessors, (13912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:28:38,777 INFO L175 Difference]: Start difference. First operand has 384 places, 2041 transitions, 46177 flow. Second operand 36 states and 6262 transitions. [2023-08-25 05:28:38,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 3165 transitions, 72241 flow [2023-08-25 05:29:26,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 3165 transitions, 72083 flow, removed 36 selfloop flow, removed 3 redundant places. [2023-08-25 05:29:26,882 INFO L231 Difference]: Finished difference. Result has 435 places, 2530 transitions, 61877 flow [2023-08-25 05:29:26,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=45888, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2035, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=809, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=61877, PETRI_PLACES=435, PETRI_TRANSITIONS=2530} [2023-08-25 05:29:26,885 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 373 predicate places. [2023-08-25 05:29:26,885 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 2530 transitions, 61877 flow [2023-08-25 05:29:26,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 165.22222222222223) internal successors, (2974), 18 states have internal predecessors, (2974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:29:26,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:29:26,885 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:29:26,893 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-25 05:29:27,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-08-25 05:29:27,091 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2023-08-25 05:29:27,091 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:29:27,091 INFO L85 PathProgramCache]: Analyzing trace with hash 371125126, now seen corresponding path program 8 times [2023-08-25 05:29:27,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:29:27,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560108613] [2023-08-25 05:29:27,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:29:27,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:29:27,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:29:27,241 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:29:27,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:29:27,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560108613] [2023-08-25 05:29:27,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560108613] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 05:29:27,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 05:29:27,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-25 05:29:27,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158350181] [2023-08-25 05:29:27,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 05:29:27,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-25 05:29:27,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:29:27,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-25 05:29:27,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-08-25 05:29:27,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 376 [2023-08-25 05:29:27,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 2530 transitions, 61877 flow. Second operand has 8 states, 8 states have (on average 165.75) internal successors, (1326), 8 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:29:27,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:29:27,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 376 [2023-08-25 05:29:27,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:30:00,065 INFO L124 PetriNetUnfolderBase]: 40160/67627 cut-off events. [2023-08-25 05:30:00,066 INFO L125 PetriNetUnfolderBase]: For 2395416/2435145 co-relation queries the response was YES. [2023-08-25 05:30:03,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 551784 conditions, 67627 events. 40160/67627 cut-off events. For 2395416/2435145 co-relation queries the response was YES. Maximal size of possible extension queue 3421. Compared 639332 event pairs, 6954 based on Foata normal form. 5992/68946 useless extension candidates. Maximal degree in co-relation 551620. Up to 24451 conditions per place. [2023-08-25 05:30:03,972 INFO L140 encePairwiseOnDemand]: 366/376 looper letters, 2009 selfloop transitions, 811 changer transitions 0/2833 dead transitions. [2023-08-25 05:30:03,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 2833 transitions, 72087 flow [2023-08-25 05:30:03,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-25 05:30:03,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-25 05:30:03,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1933 transitions. [2023-08-25 05:30:03,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46735976789168276 [2023-08-25 05:30:03,975 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1933 transitions. [2023-08-25 05:30:03,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1933 transitions. [2023-08-25 05:30:03,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:30:03,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1933 transitions. [2023-08-25 05:30:03,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 175.72727272727272) internal successors, (1933), 11 states have internal predecessors, (1933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:30:03,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 376.0) internal successors, (4512), 12 states have internal predecessors, (4512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:30:03,999 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 376.0) internal successors, (4512), 12 states have internal predecessors, (4512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:30:03,999 INFO L175 Difference]: Start difference. First operand has 435 places, 2530 transitions, 61877 flow. Second operand 11 states and 1933 transitions. [2023-08-25 05:30:03,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 2833 transitions, 72087 flow