/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/weaver/parallel-misc-1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 09:14:48,778 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 09:14:48,839 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 09:14:48,844 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 09:14:48,845 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 09:14:48,868 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 09:14:48,868 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 09:14:48,868 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 09:14:48,869 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 09:14:48,872 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 09:14:48,872 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 09:14:48,872 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 09:14:48,872 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 09:14:48,873 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 09:14:48,873 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 09:14:48,873 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 09:14:48,874 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 09:14:48,874 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 09:14:48,874 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 09:14:48,874 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 09:14:48,874 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 09:14:48,874 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 09:14:48,874 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 09:14:48,875 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 09:14:48,875 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 09:14:48,875 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 09:14:48,875 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 09:14:48,875 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 09:14:48,876 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 09:14:48,876 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 09:14:48,876 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 09:14:48,877 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 09:14:48,877 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 09:14:48,877 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 09:14:48,877 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 09:14:48,877 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-26 09:14:49,120 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 09:14:49,134 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 09:14:49,137 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 09:14:49,137 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 09:14:49,138 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 09:14:49,138 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-1.wvr.c [2023-08-26 09:14:50,065 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 09:14:50,231 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 09:14:50,231 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-1.wvr.c [2023-08-26 09:14:50,236 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63dc81db5/835a999000c94c0b8ff47702d135c0de/FLAG8f73cf1d3 [2023-08-26 09:14:50,244 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63dc81db5/835a999000c94c0b8ff47702d135c0de [2023-08-26 09:14:50,246 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 09:14:50,247 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 09:14:50,247 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 09:14:50,247 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 09:14:50,249 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 09:14:50,249 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 09:14:50" (1/1) ... [2023-08-26 09:14:50,250 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61224368 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:14:50, skipping insertion in model container [2023-08-26 09:14:50,250 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 09:14:50" (1/1) ... [2023-08-26 09:14:50,263 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 09:14:50,392 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 09:14:50,398 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 09:14:50,421 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 09:14:50,430 INFO L206 MainTranslator]: Completed translation [2023-08-26 09:14:50,430 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:14:50 WrapperNode [2023-08-26 09:14:50,430 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 09:14:50,431 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 09:14:50,431 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 09:14:50,431 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 09:14:50,435 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:14:50" (1/1) ... [2023-08-26 09:14:50,446 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:14:50" (1/1) ... [2023-08-26 09:14:50,476 INFO L138 Inliner]: procedures = 23, calls = 42, calls flagged for inlining = 18, calls inlined = 32, statements flattened = 529 [2023-08-26 09:14:50,476 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 09:14:50,476 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 09:14:50,477 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 09:14:50,477 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 09:14:50,485 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:14:50" (1/1) ... [2023-08-26 09:14:50,485 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:14:50" (1/1) ... [2023-08-26 09:14:50,491 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:14:50" (1/1) ... [2023-08-26 09:14:50,492 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:14:50" (1/1) ... [2023-08-26 09:14:50,519 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:14:50" (1/1) ... [2023-08-26 09:14:50,523 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:14:50" (1/1) ... [2023-08-26 09:14:50,525 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:14:50" (1/1) ... [2023-08-26 09:14:50,526 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:14:50" (1/1) ... [2023-08-26 09:14:50,529 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 09:14:50,530 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 09:14:50,530 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 09:14:50,530 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 09:14:50,530 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:14:50" (1/1) ... [2023-08-26 09:14:50,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 09:14:50,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:14:50,568 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-26 09:14:50,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-26 09:14:50,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 09:14:50,594 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-26 09:14:50,595 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-26 09:14:50,595 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-26 09:14:50,595 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-26 09:14:50,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 09:14:50,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 09:14:50,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 09:14:50,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-26 09:14:50,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 09:14:50,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 09:14:50,596 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 09:14:50,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 09:14:50,597 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 09:14:50,710 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 09:14:50,711 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 09:14:51,307 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 09:14:51,321 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 09:14:51,321 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-26 09:14:51,324 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 09:14:51 BoogieIcfgContainer [2023-08-26 09:14:51,324 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 09:14:51,327 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 09:14:51,327 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 09:14:51,329 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 09:14:51,329 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 09:14:50" (1/3) ... [2023-08-26 09:14:51,330 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@734e84c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 09:14:51, skipping insertion in model container [2023-08-26 09:14:51,330 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:14:50" (2/3) ... [2023-08-26 09:14:51,330 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@734e84c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 09:14:51, skipping insertion in model container [2023-08-26 09:14:51,330 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 09:14:51" (3/3) ... [2023-08-26 09:14:51,331 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-1.wvr.c [2023-08-26 09:14:51,342 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 09:14:51,342 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 76 error locations. [2023-08-26 09:14:51,342 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 09:14:51,465 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-26 09:14:51,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 641 places, 667 transitions, 1350 flow [2023-08-26 09:14:51,704 INFO L124 PetriNetUnfolderBase]: 33/665 cut-off events. [2023-08-26 09:14:51,705 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 09:14:51,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 674 conditions, 665 events. 33/665 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1742 event pairs, 0 based on Foata normal form. 0/556 useless extension candidates. Maximal degree in co-relation 426. Up to 2 conditions per place. [2023-08-26 09:14:51,718 INFO L82 GeneralOperation]: Start removeDead. Operand has 641 places, 667 transitions, 1350 flow [2023-08-26 09:14:51,730 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 630 places, 656 transitions, 1324 flow [2023-08-26 09:14:51,733 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 09:14:51,746 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 630 places, 656 transitions, 1324 flow [2023-08-26 09:14:51,751 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 630 places, 656 transitions, 1324 flow [2023-08-26 09:14:51,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 630 places, 656 transitions, 1324 flow [2023-08-26 09:14:51,853 INFO L124 PetriNetUnfolderBase]: 33/656 cut-off events. [2023-08-26 09:14:51,854 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 09:14:51,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 665 conditions, 656 events. 33/656 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1738 event pairs, 0 based on Foata normal form. 0/548 useless extension candidates. Maximal degree in co-relation 426. Up to 2 conditions per place. [2023-08-26 09:14:51,889 INFO L119 LiptonReduction]: Number of co-enabled transitions 90620 [2023-08-26 09:15:04,460 INFO L134 LiptonReduction]: Checked pairs total: 219930 [2023-08-26 09:15:04,461 INFO L136 LiptonReduction]: Total number of compositions: 782 [2023-08-26 09:15:04,470 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 09:15:04,473 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;@66c72136, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 09:15:04,474 INFO L358 AbstractCegarLoop]: Starting to check reachability of 126 error locations. [2023-08-26 09:15:04,474 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 09:15:04,475 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 09:15:04,475 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 09:15:04,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:15:04,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 09:15:04,475 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err21ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err22ASSERT_VIOLATIONDATA_RACE (and 122 more)] === [2023-08-26 09:15:04,478 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:15:04,478 INFO L85 PathProgramCache]: Analyzing trace with hash 2620, now seen corresponding path program 1 times [2023-08-26 09:15:04,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:15:04,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590628800] [2023-08-26 09:15:04,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:15:04,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:15:04,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:15:04,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:15:04,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:15:04,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590628800] [2023-08-26 09:15:04,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590628800] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:15:04,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:15:04,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 09:15:04,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925040477] [2023-08-26 09:15:04,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:15:04,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 09:15:04,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:15:04,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 09:15:04,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 09:15:04,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 639 out of 1449 [2023-08-26 09:15:04,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 154 transitions, 320 flow. Second operand has 2 states, 2 states have (on average 639.5) internal successors, (1279), 2 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:04,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:15:04,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 639 of 1449 [2023-08-26 09:15:04,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:15:04,887 INFO L124 PetriNetUnfolderBase]: 844/2294 cut-off events. [2023-08-26 09:15:04,888 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2023-08-26 09:15:04,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3732 conditions, 2294 events. 844/2294 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 16786 event pairs, 711 based on Foata normal form. 161/2259 useless extension candidates. Maximal degree in co-relation 3476. Up to 1387 conditions per place. [2023-08-26 09:15:04,899 INFO L140 encePairwiseOnDemand]: 1391/1449 looper letters, 44 selfloop transitions, 0 changer transitions 0/96 dead transitions. [2023-08-26 09:15:04,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 96 transitions, 292 flow [2023-08-26 09:15:04,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 09:15:04,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 09:15:04,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1380 transitions. [2023-08-26 09:15:04,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2023-08-26 09:15:04,916 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1380 transitions. [2023-08-26 09:15:04,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1380 transitions. [2023-08-26 09:15:04,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:15:04,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1380 transitions. [2023-08-26 09:15:04,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 690.0) internal successors, (1380), 2 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:04,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 1449.0) internal successors, (4347), 3 states have internal predecessors, (4347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:04,935 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 1449.0) internal successors, (4347), 3 states have internal predecessors, (4347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:04,936 INFO L175 Difference]: Start difference. First operand has 152 places, 154 transitions, 320 flow. Second operand 2 states and 1380 transitions. [2023-08-26 09:15:04,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 96 transitions, 292 flow [2023-08-26 09:15:04,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 96 transitions, 284 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-26 09:15:04,942 INFO L231 Difference]: Finished difference. Result has 95 places, 96 transitions, 196 flow [2023-08-26 09:15:04,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1449, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=196, PETRI_PLACES=95, PETRI_TRANSITIONS=96} [2023-08-26 09:15:04,945 INFO L281 CegarLoopForPetriNet]: 152 programPoint places, -57 predicate places. [2023-08-26 09:15:04,945 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 96 transitions, 196 flow [2023-08-26 09:15:04,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 639.5) internal successors, (1279), 2 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:04,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:15:04,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 09:15:04,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 09:15:04,947 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err21ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err22ASSERT_VIOLATIONDATA_RACE (and 122 more)] === [2023-08-26 09:15:04,957 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:15:04,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1733395699, now seen corresponding path program 1 times [2023-08-26 09:15:04,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:15:04,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633303538] [2023-08-26 09:15:04,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:15:04,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:15:05,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:15:05,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:15:05,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:15:05,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633303538] [2023-08-26 09:15:05,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633303538] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:15:05,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:15:05,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 09:15:05,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583288517] [2023-08-26 09:15:05,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:15:05,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 09:15:05,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:15:05,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 09:15:05,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 09:15:05,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 627 out of 1449 [2023-08-26 09:15:05,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 96 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 628.6666666666666) internal successors, (1886), 3 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:05,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:15:05,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 627 of 1449 [2023-08-26 09:15:05,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:15:05,320 INFO L124 PetriNetUnfolderBase]: 844/2280 cut-off events. [2023-08-26 09:15:05,320 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-08-26 09:15:05,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3684 conditions, 2280 events. 844/2280 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 16617 event pairs, 711 based on Foata normal form. 0/2084 useless extension candidates. Maximal degree in co-relation 3681. Up to 1386 conditions per place. [2023-08-26 09:15:05,330 INFO L140 encePairwiseOnDemand]: 1446/1449 looper letters, 43 selfloop transitions, 1 changer transitions 0/94 dead transitions. [2023-08-26 09:15:05,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 94 transitions, 280 flow [2023-08-26 09:15:05,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 09:15:05,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 09:15:05,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1927 transitions. [2023-08-26 09:15:05,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44329422590292156 [2023-08-26 09:15:05,335 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1927 transitions. [2023-08-26 09:15:05,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1927 transitions. [2023-08-26 09:15:05,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:15:05,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1927 transitions. [2023-08-26 09:15:05,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 642.3333333333334) internal successors, (1927), 3 states have internal predecessors, (1927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:05,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1449.0) internal successors, (5796), 4 states have internal predecessors, (5796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:05,347 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1449.0) internal successors, (5796), 4 states have internal predecessors, (5796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:05,347 INFO L175 Difference]: Start difference. First operand has 95 places, 96 transitions, 196 flow. Second operand 3 states and 1927 transitions. [2023-08-26 09:15:05,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 94 transitions, 280 flow [2023-08-26 09:15:05,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 94 transitions, 280 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 09:15:05,350 INFO L231 Difference]: Finished difference. Result has 95 places, 94 transitions, 194 flow [2023-08-26 09:15:05,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1449, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=95, PETRI_TRANSITIONS=94} [2023-08-26 09:15:05,351 INFO L281 CegarLoopForPetriNet]: 152 programPoint places, -57 predicate places. [2023-08-26 09:15:05,351 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 94 transitions, 194 flow [2023-08-26 09:15:05,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 628.6666666666666) internal successors, (1886), 3 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:05,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:15:05,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 09:15:05,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 09:15:05,353 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err21ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err21ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err22ASSERT_VIOLATIONDATA_RACE (and 122 more)] === [2023-08-26 09:15:05,355 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:15:05,356 INFO L85 PathProgramCache]: Analyzing trace with hash 2099331577, now seen corresponding path program 1 times [2023-08-26 09:15:05,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:15:05,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40266784] [2023-08-26 09:15:05,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:15:05,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:15:05,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:15:05,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:15:05,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:15:05,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40266784] [2023-08-26 09:15:05,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40266784] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:15:05,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:15:05,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 09:15:05,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987708237] [2023-08-26 09:15:05,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:15:05,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 09:15:05,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:15:05,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 09:15:05,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 09:15:05,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 618 out of 1449 [2023-08-26 09:15:05,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 94 transitions, 194 flow. Second operand has 3 states, 3 states have (on average 620.0) internal successors, (1860), 3 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:05,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:15:05,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 618 of 1449 [2023-08-26 09:15:05,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:15:05,687 INFO L124 PetriNetUnfolderBase]: 1466/3783 cut-off events. [2023-08-26 09:15:05,687 INFO L125 PetriNetUnfolderBase]: For 7/79 co-relation queries the response was YES. [2023-08-26 09:15:05,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6181 conditions, 3783 events. 1466/3783 cut-off events. For 7/79 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 27488 event pairs, 526 based on Foata normal form. 1/3482 useless extension candidates. Maximal degree in co-relation 6177. Up to 1329 conditions per place. [2023-08-26 09:15:05,704 INFO L140 encePairwiseOnDemand]: 1443/1449 looper letters, 72 selfloop transitions, 5 changer transitions 0/126 dead transitions. [2023-08-26 09:15:05,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 126 transitions, 413 flow [2023-08-26 09:15:05,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 09:15:05,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 09:15:05,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1932 transitions. [2023-08-26 09:15:05,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2023-08-26 09:15:05,707 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1932 transitions. [2023-08-26 09:15:05,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1932 transitions. [2023-08-26 09:15:05,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:15:05,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1932 transitions. [2023-08-26 09:15:05,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 644.0) internal successors, (1932), 3 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:05,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1449.0) internal successors, (5796), 4 states have internal predecessors, (5796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:05,718 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1449.0) internal successors, (5796), 4 states have internal predecessors, (5796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:05,718 INFO L175 Difference]: Start difference. First operand has 95 places, 94 transitions, 194 flow. Second operand 3 states and 1932 transitions. [2023-08-26 09:15:05,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 126 transitions, 413 flow [2023-08-26 09:15:05,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 126 transitions, 412 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 09:15:05,720 INFO L231 Difference]: Finished difference. Result has 97 places, 95 transitions, 219 flow [2023-08-26 09:15:05,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1449, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=219, PETRI_PLACES=97, PETRI_TRANSITIONS=95} [2023-08-26 09:15:05,721 INFO L281 CegarLoopForPetriNet]: 152 programPoint places, -55 predicate places. [2023-08-26 09:15:05,721 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 95 transitions, 219 flow [2023-08-26 09:15:05,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 620.0) internal successors, (1860), 3 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:05,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:15:05,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:15:05,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 09:15:05,722 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err21ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err22ASSERT_VIOLATIONDATA_RACE (and 122 more)] === [2023-08-26 09:15:05,723 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:15:05,723 INFO L85 PathProgramCache]: Analyzing trace with hash 654788087, now seen corresponding path program 1 times [2023-08-26 09:15:05,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:15:05,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134308639] [2023-08-26 09:15:05,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:15:05,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:15:05,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:15:05,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:15:05,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:15:05,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134308639] [2023-08-26 09:15:05,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134308639] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:15:05,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:15:05,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 09:15:05,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671414550] [2023-08-26 09:15:05,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:15:05,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 09:15:05,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:15:05,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 09:15:05,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 09:15:05,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 618 out of 1449 [2023-08-26 09:15:05,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 95 transitions, 219 flow. Second operand has 3 states, 3 states have (on average 620.3333333333334) internal successors, (1861), 3 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:05,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:15:05,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 618 of 1449 [2023-08-26 09:15:05,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:15:06,048 INFO L124 PetriNetUnfolderBase]: 1561/3764 cut-off events. [2023-08-26 09:15:06,049 INFO L125 PetriNetUnfolderBase]: For 323/323 co-relation queries the response was YES. [2023-08-26 09:15:06,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6665 conditions, 3764 events. 1561/3764 cut-off events. For 323/323 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 26373 event pairs, 504 based on Foata normal form. 0/3591 useless extension candidates. Maximal degree in co-relation 6660. Up to 2388 conditions per place. [2023-08-26 09:15:06,065 INFO L140 encePairwiseOnDemand]: 1441/1449 looper letters, 61 selfloop transitions, 2 changer transitions 0/106 dead transitions. [2023-08-26 09:15:06,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 106 transitions, 380 flow [2023-08-26 09:15:06,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 09:15:06,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 09:15:06,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1921 transitions. [2023-08-26 09:15:06,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4419139636530941 [2023-08-26 09:15:06,069 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1921 transitions. [2023-08-26 09:15:06,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1921 transitions. [2023-08-26 09:15:06,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:15:06,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1921 transitions. [2023-08-26 09:15:06,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 640.3333333333334) internal successors, (1921), 3 states have internal predecessors, (1921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:06,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1449.0) internal successors, (5796), 4 states have internal predecessors, (5796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:06,080 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1449.0) internal successors, (5796), 4 states have internal predecessors, (5796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:06,080 INFO L175 Difference]: Start difference. First operand has 97 places, 95 transitions, 219 flow. Second operand 3 states and 1921 transitions. [2023-08-26 09:15:06,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 106 transitions, 380 flow [2023-08-26 09:15:06,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 106 transitions, 366 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 09:15:06,082 INFO L231 Difference]: Finished difference. Result has 92 places, 91 transitions, 211 flow [2023-08-26 09:15:06,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1449, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=211, PETRI_PLACES=92, PETRI_TRANSITIONS=91} [2023-08-26 09:15:06,083 INFO L281 CegarLoopForPetriNet]: 152 programPoint places, -60 predicate places. [2023-08-26 09:15:06,083 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 91 transitions, 211 flow [2023-08-26 09:15:06,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 620.3333333333334) internal successors, (1861), 3 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:06,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:15:06,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:15:06,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 09:15:06,084 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err21ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err21ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err22ASSERT_VIOLATIONDATA_RACE (and 122 more)] === [2023-08-26 09:15:06,084 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:15:06,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1079369827, now seen corresponding path program 1 times [2023-08-26 09:15:06,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:15:06,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855181508] [2023-08-26 09:15:06,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:15:06,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:15:06,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:15:06,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:15:06,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:15:06,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855181508] [2023-08-26 09:15:06,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855181508] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:15:06,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:15:06,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 09:15:06,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991714786] [2023-08-26 09:15:06,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:15:06,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 09:15:06,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:15:06,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 09:15:06,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 09:15:06,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 618 out of 1449 [2023-08-26 09:15:06,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 91 transitions, 211 flow. Second operand has 3 states, 3 states have (on average 620.6666666666666) internal successors, (1862), 3 states have internal predecessors, (1862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:06,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:15:06,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 618 of 1449 [2023-08-26 09:15:06,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:15:06,557 INFO L124 PetriNetUnfolderBase]: 2621/5746 cut-off events. [2023-08-26 09:15:06,557 INFO L125 PetriNetUnfolderBase]: For 422/422 co-relation queries the response was YES. [2023-08-26 09:15:06,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10572 conditions, 5746 events. 2621/5746 cut-off events. For 422/422 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 40125 event pairs, 940 based on Foata normal form. 0/5417 useless extension candidates. Maximal degree in co-relation 10567. Up to 2344 conditions per place. [2023-08-26 09:15:06,581 INFO L140 encePairwiseOnDemand]: 1443/1449 looper letters, 78 selfloop transitions, 5 changer transitions 0/124 dead transitions. [2023-08-26 09:15:06,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 124 transitions, 461 flow [2023-08-26 09:15:06,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 09:15:06,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 09:15:06,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1931 transitions. [2023-08-26 09:15:06,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4442144007361399 [2023-08-26 09:15:06,586 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1931 transitions. [2023-08-26 09:15:06,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1931 transitions. [2023-08-26 09:15:06,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:15:06,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1931 transitions. [2023-08-26 09:15:06,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 643.6666666666666) internal successors, (1931), 3 states have internal predecessors, (1931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:06,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1449.0) internal successors, (5796), 4 states have internal predecessors, (5796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:06,595 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1449.0) internal successors, (5796), 4 states have internal predecessors, (5796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:06,595 INFO L175 Difference]: Start difference. First operand has 92 places, 91 transitions, 211 flow. Second operand 3 states and 1931 transitions. [2023-08-26 09:15:06,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 124 transitions, 461 flow [2023-08-26 09:15:06,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 124 transitions, 461 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 09:15:06,599 INFO L231 Difference]: Finished difference. Result has 95 places, 92 transitions, 237 flow [2023-08-26 09:15:06,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1449, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=237, PETRI_PLACES=95, PETRI_TRANSITIONS=92} [2023-08-26 09:15:06,601 INFO L281 CegarLoopForPetriNet]: 152 programPoint places, -57 predicate places. [2023-08-26 09:15:06,601 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 92 transitions, 237 flow [2023-08-26 09:15:06,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 620.6666666666666) internal successors, (1862), 3 states have internal predecessors, (1862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:06,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:15:06,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:15:06,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 09:15:06,602 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err21ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err22ASSERT_VIOLATIONDATA_RACE (and 122 more)] === [2023-08-26 09:15:06,602 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:15:06,602 INFO L85 PathProgramCache]: Analyzing trace with hash 2073497370, now seen corresponding path program 1 times [2023-08-26 09:15:06,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:15:06,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074231829] [2023-08-26 09:15:06,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:15:06,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:15:06,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:15:06,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:15:06,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:15:06,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074231829] [2023-08-26 09:15:06,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074231829] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:15:06,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:15:06,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 09:15:06,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800782059] [2023-08-26 09:15:06,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:15:06,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 09:15:06,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:15:06,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 09:15:06,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 09:15:06,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 579 out of 1449 [2023-08-26 09:15:06,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 92 transitions, 237 flow. Second operand has 6 states, 6 states have (on average 580.6666666666666) internal successors, (3484), 6 states have internal predecessors, (3484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:06,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:15:06,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 579 of 1449 [2023-08-26 09:15:06,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:15:09,926 INFO L124 PetriNetUnfolderBase]: 28401/43331 cut-off events. [2023-08-26 09:15:09,926 INFO L125 PetriNetUnfolderBase]: For 5825/5825 co-relation queries the response was YES. [2023-08-26 09:15:09,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91904 conditions, 43331 events. 28401/43331 cut-off events. For 5825/5825 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 286515 event pairs, 2334 based on Foata normal form. 0/40319 useless extension candidates. Maximal degree in co-relation 91897. Up to 15611 conditions per place. [2023-08-26 09:15:10,114 INFO L140 encePairwiseOnDemand]: 1444/1449 looper letters, 346 selfloop transitions, 4 changer transitions 0/355 dead transitions. [2023-08-26 09:15:10,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 355 transitions, 1607 flow [2023-08-26 09:15:10,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 09:15:10,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 09:15:10,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3795 transitions. [2023-08-26 09:15:10,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4365079365079365 [2023-08-26 09:15:10,121 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3795 transitions. [2023-08-26 09:15:10,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3795 transitions. [2023-08-26 09:15:10,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:15:10,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3795 transitions. [2023-08-26 09:15:10,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 632.5) internal successors, (3795), 6 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:10,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1449.0) internal successors, (10143), 7 states have internal predecessors, (10143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:10,135 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1449.0) internal successors, (10143), 7 states have internal predecessors, (10143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:10,135 INFO L175 Difference]: Start difference. First operand has 95 places, 92 transitions, 237 flow. Second operand 6 states and 3795 transitions. [2023-08-26 09:15:10,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 355 transitions, 1607 flow [2023-08-26 09:15:10,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 355 transitions, 1573 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 09:15:10,149 INFO L231 Difference]: Finished difference. Result has 97 places, 91 transitions, 233 flow [2023-08-26 09:15:10,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1449, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=233, PETRI_PLACES=97, PETRI_TRANSITIONS=91} [2023-08-26 09:15:10,151 INFO L281 CegarLoopForPetriNet]: 152 programPoint places, -55 predicate places. [2023-08-26 09:15:10,153 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 91 transitions, 233 flow [2023-08-26 09:15:10,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 580.6666666666666) internal successors, (3484), 6 states have internal predecessors, (3484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:10,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:15:10,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:15:10,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 09:15:10,155 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err5ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err21ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err22ASSERT_VIOLATIONDATA_RACE (and 122 more)] === [2023-08-26 09:15:10,155 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:15:10,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1929450043, now seen corresponding path program 1 times [2023-08-26 09:15:10,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:15:10,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503021481] [2023-08-26 09:15:10,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:15:10,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:15:10,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:15:10,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:15:10,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:15:10,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503021481] [2023-08-26 09:15:10,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503021481] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:15:10,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:15:10,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 09:15:10,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202544607] [2023-08-26 09:15:10,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:15:10,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 09:15:10,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:15:10,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 09:15:10,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 09:15:10,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 588 out of 1449 [2023-08-26 09:15:10,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 91 transitions, 233 flow. Second operand has 4 states, 4 states have (on average 591.25) internal successors, (2365), 4 states have internal predecessors, (2365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:10,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:15:10,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 588 of 1449 [2023-08-26 09:15:10,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:15:10,981 INFO L124 PetriNetUnfolderBase]: 5332/10313 cut-off events. [2023-08-26 09:15:10,981 INFO L125 PetriNetUnfolderBase]: For 2438/2438 co-relation queries the response was YES. [2023-08-26 09:15:10,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21959 conditions, 10313 events. 5332/10313 cut-off events. For 2438/2438 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 69728 event pairs, 4529 based on Foata normal form. 68/10049 useless extension candidates. Maximal degree in co-relation 21952. Up to 7708 conditions per place. [2023-08-26 09:15:11,015 INFO L140 encePairwiseOnDemand]: 1444/1449 looper letters, 91 selfloop transitions, 5 changer transitions 0/120 dead transitions. [2023-08-26 09:15:11,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 120 transitions, 508 flow [2023-08-26 09:15:11,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 09:15:11,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 09:15:11,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2440 transitions. [2023-08-26 09:15:11,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4209799861973775 [2023-08-26 09:15:11,020 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2440 transitions. [2023-08-26 09:15:11,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2440 transitions. [2023-08-26 09:15:11,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:15:11,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2440 transitions. [2023-08-26 09:15:11,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 610.0) internal successors, (2440), 4 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:11,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1449.0) internal successors, (7245), 5 states have internal predecessors, (7245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:11,028 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1449.0) internal successors, (7245), 5 states have internal predecessors, (7245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:11,028 INFO L175 Difference]: Start difference. First operand has 97 places, 91 transitions, 233 flow. Second operand 4 states and 2440 transitions. [2023-08-26 09:15:11,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 120 transitions, 508 flow [2023-08-26 09:15:11,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 120 transitions, 499 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-26 09:15:11,033 INFO L231 Difference]: Finished difference. Result has 99 places, 94 transitions, 266 flow [2023-08-26 09:15:11,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1449, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=266, PETRI_PLACES=99, PETRI_TRANSITIONS=94} [2023-08-26 09:15:11,034 INFO L281 CegarLoopForPetriNet]: 152 programPoint places, -53 predicate places. [2023-08-26 09:15:11,034 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 94 transitions, 266 flow [2023-08-26 09:15:11,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 591.25) internal successors, (2365), 4 states have internal predecessors, (2365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:11,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:15:11,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:15:11,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 09:15:11,035 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err5ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err21ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err22ASSERT_VIOLATIONDATA_RACE (and 122 more)] === [2023-08-26 09:15:11,035 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:15:11,035 INFO L85 PathProgramCache]: Analyzing trace with hash 977430780, now seen corresponding path program 1 times [2023-08-26 09:15:11,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:15:11,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199491575] [2023-08-26 09:15:11,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:15:11,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:15:11,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:15:11,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:15:11,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:15:11,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199491575] [2023-08-26 09:15:11,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199491575] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:15:11,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:15:11,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 09:15:11,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256189478] [2023-08-26 09:15:11,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:15:11,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 09:15:11,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:15:11,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 09:15:11,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 09:15:11,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 570 out of 1449 [2023-08-26 09:15:11,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 94 transitions, 266 flow. Second operand has 6 states, 6 states have (on average 572.3333333333334) internal successors, (3434), 6 states have internal predecessors, (3434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:11,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:15:11,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 570 of 1449 [2023-08-26 09:15:11,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:15:14,078 INFO L124 PetriNetUnfolderBase]: 28157/43902 cut-off events. [2023-08-26 09:15:14,078 INFO L125 PetriNetUnfolderBase]: For 7054/7054 co-relation queries the response was YES. [2023-08-26 09:15:14,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95804 conditions, 43902 events. 28157/43902 cut-off events. For 7054/7054 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 281637 event pairs, 7166 based on Foata normal form. 0/42554 useless extension candidates. Maximal degree in co-relation 95795. Up to 24412 conditions per place. [2023-08-26 09:15:14,252 INFO L140 encePairwiseOnDemand]: 1441/1449 looper letters, 271 selfloop transitions, 5 changer transitions 0/279 dead transitions. [2023-08-26 09:15:14,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 279 transitions, 1300 flow [2023-08-26 09:15:14,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 09:15:14,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 09:15:14,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3678 transitions. [2023-08-26 09:15:14,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4230503795721187 [2023-08-26 09:15:14,258 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3678 transitions. [2023-08-26 09:15:14,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3678 transitions. [2023-08-26 09:15:14,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:15:14,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3678 transitions. [2023-08-26 09:15:14,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 613.0) internal successors, (3678), 6 states have internal predecessors, (3678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:14,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1449.0) internal successors, (10143), 7 states have internal predecessors, (10143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:14,271 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1449.0) internal successors, (10143), 7 states have internal predecessors, (10143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:14,271 INFO L175 Difference]: Start difference. First operand has 99 places, 94 transitions, 266 flow. Second operand 6 states and 3678 transitions. [2023-08-26 09:15:14,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 279 transitions, 1300 flow [2023-08-26 09:15:14,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 279 transitions, 1298 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-26 09:15:14,277 INFO L231 Difference]: Finished difference. Result has 101 places, 91 transitions, 268 flow [2023-08-26 09:15:14,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1449, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=268, PETRI_PLACES=101, PETRI_TRANSITIONS=91} [2023-08-26 09:15:14,279 INFO L281 CegarLoopForPetriNet]: 152 programPoint places, -51 predicate places. [2023-08-26 09:15:14,279 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 91 transitions, 268 flow [2023-08-26 09:15:14,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 572.3333333333334) internal successors, (3434), 6 states have internal predecessors, (3434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:14,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:15:14,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:15:14,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 09:15:14,280 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err5ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err21ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err22ASSERT_VIOLATIONDATA_RACE (and 122 more)] === [2023-08-26 09:15:14,280 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:15:14,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1601373516, now seen corresponding path program 1 times [2023-08-26 09:15:14,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:15:14,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952871643] [2023-08-26 09:15:14,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:15:14,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:15:14,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:15:14,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 09:15:14,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:15:14,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952871643] [2023-08-26 09:15:14,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952871643] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:15:14,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:15:14,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 09:15:14,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406897450] [2023-08-26 09:15:14,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:15:14,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 09:15:14,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:15:14,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 09:15:14,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 09:15:14,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 570 out of 1449 [2023-08-26 09:15:14,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 91 transitions, 268 flow. Second operand has 6 states, 6 states have (on average 572.3333333333334) internal successors, (3434), 6 states have internal predecessors, (3434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:14,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:15:14,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 570 of 1449 [2023-08-26 09:15:14,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:15:17,333 INFO L124 PetriNetUnfolderBase]: 25692/39819 cut-off events. [2023-08-26 09:15:17,334 INFO L125 PetriNetUnfolderBase]: For 9145/9145 co-relation queries the response was YES. [2023-08-26 09:15:17,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90536 conditions, 39819 events. 25692/39819 cut-off events. For 9145/9145 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 246307 event pairs, 7417 based on Foata normal form. 0/39771 useless extension candidates. Maximal degree in co-relation 90526. Up to 20851 conditions per place. [2023-08-26 09:15:17,492 INFO L140 encePairwiseOnDemand]: 1441/1449 looper letters, 224 selfloop transitions, 5 changer transitions 0/232 dead transitions. [2023-08-26 09:15:17,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 232 transitions, 1104 flow [2023-08-26 09:15:17,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 09:15:17,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 09:15:17,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3635 transitions. [2023-08-26 09:15:17,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41810443984357026 [2023-08-26 09:15:17,498 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3635 transitions. [2023-08-26 09:15:17,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3635 transitions. [2023-08-26 09:15:17,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:15:17,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3635 transitions. [2023-08-26 09:15:17,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 605.8333333333334) internal successors, (3635), 6 states have internal predecessors, (3635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:17,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1449.0) internal successors, (10143), 7 states have internal predecessors, (10143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:17,511 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1449.0) internal successors, (10143), 7 states have internal predecessors, (10143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:17,511 INFO L175 Difference]: Start difference. First operand has 101 places, 91 transitions, 268 flow. Second operand 6 states and 3635 transitions. [2023-08-26 09:15:17,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 232 transitions, 1104 flow [2023-08-26 09:15:17,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 232 transitions, 1054 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-26 09:15:17,522 INFO L231 Difference]: Finished difference. Result has 98 places, 88 transitions, 262 flow [2023-08-26 09:15:17,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1449, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=262, PETRI_PLACES=98, PETRI_TRANSITIONS=88} [2023-08-26 09:15:17,523 INFO L281 CegarLoopForPetriNet]: 152 programPoint places, -54 predicate places. [2023-08-26 09:15:17,523 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 88 transitions, 262 flow [2023-08-26 09:15:17,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 572.3333333333334) internal successors, (3434), 6 states have internal predecessors, (3434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:17,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:15:17,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:15:17,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 09:15:17,524 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err14ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err21ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err22ASSERT_VIOLATIONDATA_RACE (and 122 more)] === [2023-08-26 09:15:17,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:15:17,524 INFO L85 PathProgramCache]: Analyzing trace with hash 235613975, now seen corresponding path program 1 times [2023-08-26 09:15:17,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:15:17,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664680293] [2023-08-26 09:15:17,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:15:17,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:15:17,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:15:17,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:15:17,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:15:17,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664680293] [2023-08-26 09:15:17,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664680293] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:15:17,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:15:17,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 09:15:17,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858538028] [2023-08-26 09:15:17,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:15:17,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 09:15:17,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:15:17,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 09:15:17,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 09:15:17,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 616 out of 1449 [2023-08-26 09:15:17,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 88 transitions, 262 flow. Second operand has 3 states, 3 states have (on average 620.0) internal successors, (1860), 3 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:17,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:15:17,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 616 of 1449 [2023-08-26 09:15:17,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:15:18,097 INFO L124 PetriNetUnfolderBase]: 2756/5939 cut-off events. [2023-08-26 09:15:18,097 INFO L125 PetriNetUnfolderBase]: For 1387/1387 co-relation queries the response was YES. [2023-08-26 09:15:18,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12226 conditions, 5939 events. 2756/5939 cut-off events. For 1387/1387 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 40643 event pairs, 2104 based on Foata normal form. 0/5849 useless extension candidates. Maximal degree in co-relation 12216. Up to 4225 conditions per place. [2023-08-26 09:15:18,122 INFO L140 encePairwiseOnDemand]: 1446/1449 looper letters, 71 selfloop transitions, 3 changer transitions 0/108 dead transitions. [2023-08-26 09:15:18,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 108 transitions, 479 flow [2023-08-26 09:15:18,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 09:15:18,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 09:15:18,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1911 transitions. [2023-08-26 09:15:18,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4396135265700483 [2023-08-26 09:15:18,127 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1911 transitions. [2023-08-26 09:15:18,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1911 transitions. [2023-08-26 09:15:18,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:15:18,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1911 transitions. [2023-08-26 09:15:18,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 637.0) internal successors, (1911), 3 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:18,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1449.0) internal successors, (5796), 4 states have internal predecessors, (5796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:18,134 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1449.0) internal successors, (5796), 4 states have internal predecessors, (5796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:18,134 INFO L175 Difference]: Start difference. First operand has 98 places, 88 transitions, 262 flow. Second operand 3 states and 1911 transitions. [2023-08-26 09:15:18,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 108 transitions, 479 flow [2023-08-26 09:15:18,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 108 transitions, 467 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-26 09:15:18,138 INFO L231 Difference]: Finished difference. Result has 94 places, 87 transitions, 256 flow [2023-08-26 09:15:18,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1449, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=256, PETRI_PLACES=94, PETRI_TRANSITIONS=87} [2023-08-26 09:15:18,138 INFO L281 CegarLoopForPetriNet]: 152 programPoint places, -58 predicate places. [2023-08-26 09:15:18,138 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 87 transitions, 256 flow [2023-08-26 09:15:18,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 620.0) internal successors, (1860), 3 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:18,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:15:18,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:15:18,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 09:15:18,139 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err21ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err22ASSERT_VIOLATIONDATA_RACE (and 122 more)] === [2023-08-26 09:15:18,139 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:15:18,139 INFO L85 PathProgramCache]: Analyzing trace with hash -783165431, now seen corresponding path program 1 times [2023-08-26 09:15:18,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:15:18,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756093325] [2023-08-26 09:15:18,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:15:18,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:15:18,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:15:18,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:15:18,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:15:18,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756093325] [2023-08-26 09:15:18,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756093325] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:15:18,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:15:18,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 09:15:18,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762616079] [2023-08-26 09:15:18,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:15:18,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 09:15:18,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:15:18,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 09:15:18,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 09:15:18,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 579 out of 1449 [2023-08-26 09:15:18,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 87 transitions, 256 flow. Second operand has 6 states, 6 states have (on average 582.1666666666666) internal successors, (3493), 6 states have internal predecessors, (3493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:18,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:15:18,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 579 of 1449 [2023-08-26 09:15:18,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:15:20,850 INFO L124 PetriNetUnfolderBase]: 24162/37846 cut-off events. [2023-08-26 09:15:20,850 INFO L125 PetriNetUnfolderBase]: For 6926/6926 co-relation queries the response was YES. [2023-08-26 09:15:20,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83772 conditions, 37846 events. 24162/37846 cut-off events. For 6926/6926 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 239101 event pairs, 21205 based on Foata normal form. 0/37829 useless extension candidates. Maximal degree in co-relation 83762. Up to 36140 conditions per place. [2023-08-26 09:15:20,987 INFO L140 encePairwiseOnDemand]: 1444/1449 looper letters, 198 selfloop transitions, 4 changer transitions 0/206 dead transitions. [2023-08-26 09:15:20,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 206 transitions, 982 flow [2023-08-26 09:15:20,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 09:15:20,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 09:15:20,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3656 transitions. [2023-08-26 09:15:20,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42051989878076834 [2023-08-26 09:15:20,995 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3656 transitions. [2023-08-26 09:15:20,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3656 transitions. [2023-08-26 09:15:20,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:15:20,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3656 transitions. [2023-08-26 09:15:21,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 609.3333333333334) internal successors, (3656), 6 states have internal predecessors, (3656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:21,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1449.0) internal successors, (10143), 7 states have internal predecessors, (10143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:21,008 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1449.0) internal successors, (10143), 7 states have internal predecessors, (10143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:21,008 INFO L175 Difference]: Start difference. First operand has 94 places, 87 transitions, 256 flow. Second operand 6 states and 3656 transitions. [2023-08-26 09:15:21,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 206 transitions, 982 flow [2023-08-26 09:15:21,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 206 transitions, 952 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 09:15:21,020 INFO L231 Difference]: Finished difference. Result has 96 places, 86 transitions, 256 flow [2023-08-26 09:15:21,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1449, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=256, PETRI_PLACES=96, PETRI_TRANSITIONS=86} [2023-08-26 09:15:21,020 INFO L281 CegarLoopForPetriNet]: 152 programPoint places, -56 predicate places. [2023-08-26 09:15:21,020 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 86 transitions, 256 flow [2023-08-26 09:15:21,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 582.1666666666666) internal successors, (3493), 6 states have internal predecessors, (3493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:21,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:15:21,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:15:21,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 09:15:21,021 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err19ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err21ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err22ASSERT_VIOLATIONDATA_RACE (and 122 more)] === [2023-08-26 09:15:21,021 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:15:21,022 INFO L85 PathProgramCache]: Analyzing trace with hash -916550175, now seen corresponding path program 1 times [2023-08-26 09:15:21,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:15:21,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904996368] [2023-08-26 09:15:21,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:15:21,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:15:21,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:15:21,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:15:21,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:15:21,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904996368] [2023-08-26 09:15:21,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904996368] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:15:21,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:15:21,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 09:15:21,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411267787] [2023-08-26 09:15:21,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:15:21,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 09:15:21,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:15:21,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 09:15:21,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 09:15:21,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 615 out of 1449 [2023-08-26 09:15:21,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 86 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 620.3333333333334) internal successors, (1861), 3 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:21,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:15:21,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 615 of 1449 [2023-08-26 09:15:21,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:15:21,508 INFO L124 PetriNetUnfolderBase]: 2836/6021 cut-off events. [2023-08-26 09:15:21,508 INFO L125 PetriNetUnfolderBase]: For 1393/1393 co-relation queries the response was YES. [2023-08-26 09:15:21,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12143 conditions, 6021 events. 2836/6021 cut-off events. For 1393/1393 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 40711 event pairs, 2095 based on Foata normal form. 0/5943 useless extension candidates. Maximal degree in co-relation 12133. Up to 4265 conditions per place. [2023-08-26 09:15:21,525 INFO L140 encePairwiseOnDemand]: 1445/1449 looper letters, 71 selfloop transitions, 4 changer transitions 0/107 dead transitions. [2023-08-26 09:15:21,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 107 transitions, 477 flow [2023-08-26 09:15:21,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 09:15:21,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 09:15:21,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1909 transitions. [2023-08-26 09:15:21,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43915343915343913 [2023-08-26 09:15:21,529 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1909 transitions. [2023-08-26 09:15:21,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1909 transitions. [2023-08-26 09:15:21,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:15:21,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1909 transitions. [2023-08-26 09:15:21,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 636.3333333333334) internal successors, (1909), 3 states have internal predecessors, (1909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:21,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1449.0) internal successors, (5796), 4 states have internal predecessors, (5796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:21,535 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1449.0) internal successors, (5796), 4 states have internal predecessors, (5796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:21,536 INFO L175 Difference]: Start difference. First operand has 96 places, 86 transitions, 256 flow. Second operand 3 states and 1909 transitions. [2023-08-26 09:15:21,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 107 transitions, 477 flow [2023-08-26 09:15:21,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 107 transitions, 468 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-26 09:15:21,538 INFO L231 Difference]: Finished difference. Result has 94 places, 86 transitions, 263 flow [2023-08-26 09:15:21,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1449, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=263, PETRI_PLACES=94, PETRI_TRANSITIONS=86} [2023-08-26 09:15:21,540 INFO L281 CegarLoopForPetriNet]: 152 programPoint places, -58 predicate places. [2023-08-26 09:15:21,540 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 86 transitions, 263 flow [2023-08-26 09:15:21,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 620.3333333333334) internal successors, (1861), 3 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:21,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:15:21,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:15:21,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 09:15:21,541 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err19ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err21ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err22ASSERT_VIOLATIONDATA_RACE (and 122 more)] === [2023-08-26 09:15:21,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:15:21,541 INFO L85 PathProgramCache]: Analyzing trace with hash -2003317626, now seen corresponding path program 1 times [2023-08-26 09:15:21,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:15:21,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055557926] [2023-08-26 09:15:21,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:15:21,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:15:21,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:15:21,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 09:15:21,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:15:21,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055557926] [2023-08-26 09:15:21,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055557926] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:15:21,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:15:21,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 09:15:21,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431882238] [2023-08-26 09:15:21,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:15:21,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 09:15:21,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:15:21,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 09:15:21,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 09:15:21,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 615 out of 1449 [2023-08-26 09:15:21,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 86 transitions, 263 flow. Second operand has 3 states, 3 states have (on average 619.3333333333334) internal successors, (1858), 3 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:21,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:15:21,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 615 of 1449 [2023-08-26 09:15:21,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:15:22,054 INFO L124 PetriNetUnfolderBase]: 2926/6035 cut-off events. [2023-08-26 09:15:22,055 INFO L125 PetriNetUnfolderBase]: For 1727/1727 co-relation queries the response was YES. [2023-08-26 09:15:22,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12668 conditions, 6035 events. 2926/6035 cut-off events. For 1727/1727 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 40083 event pairs, 2153 based on Foata normal form. 0/5965 useless extension candidates. Maximal degree in co-relation 12658. Up to 4381 conditions per place. [2023-08-26 09:15:22,079 INFO L140 encePairwiseOnDemand]: 1445/1449 looper letters, 75 selfloop transitions, 4 changer transitions 0/110 dead transitions. [2023-08-26 09:15:22,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 110 transitions, 490 flow [2023-08-26 09:15:22,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 09:15:22,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 09:15:22,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1912 transitions. [2023-08-26 09:15:22,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398435702783529 [2023-08-26 09:15:22,082 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1912 transitions. [2023-08-26 09:15:22,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1912 transitions. [2023-08-26 09:15:22,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:15:22,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1912 transitions. [2023-08-26 09:15:22,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 637.3333333333334) internal successors, (1912), 3 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:22,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1449.0) internal successors, (5796), 4 states have internal predecessors, (5796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:22,093 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1449.0) internal successors, (5796), 4 states have internal predecessors, (5796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:22,093 INFO L175 Difference]: Start difference. First operand has 94 places, 86 transitions, 263 flow. Second operand 3 states and 1912 transitions. [2023-08-26 09:15:22,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 110 transitions, 490 flow [2023-08-26 09:15:22,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 110 transitions, 484 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 09:15:22,098 INFO L231 Difference]: Finished difference. Result has 95 places, 86 transitions, 273 flow [2023-08-26 09:15:22,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1449, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=273, PETRI_PLACES=95, PETRI_TRANSITIONS=86} [2023-08-26 09:15:22,099 INFO L281 CegarLoopForPetriNet]: 152 programPoint places, -57 predicate places. [2023-08-26 09:15:22,099 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 86 transitions, 273 flow [2023-08-26 09:15:22,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 619.3333333333334) internal successors, (1858), 3 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:22,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:15:22,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:15:22,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-26 09:15:22,099 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err21ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err22ASSERT_VIOLATIONDATA_RACE (and 122 more)] === [2023-08-26 09:15:22,100 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:15:22,100 INFO L85 PathProgramCache]: Analyzing trace with hash 90202892, now seen corresponding path program 1 times [2023-08-26 09:15:22,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:15:22,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588581768] [2023-08-26 09:15:22,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:15:22,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:15:22,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:15:22,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:15:22,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:15:22,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588581768] [2023-08-26 09:15:22,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588581768] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:15:22,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:15:22,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 09:15:22,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121598687] [2023-08-26 09:15:22,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:15:22,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 09:15:22,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:15:22,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 09:15:22,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 09:15:22,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 608 out of 1449 [2023-08-26 09:15:22,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 86 transitions, 273 flow. Second operand has 5 states, 5 states have (on average 611.2) internal successors, (3056), 5 states have internal predecessors, (3056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:22,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:15:22,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 608 of 1449 [2023-08-26 09:15:22,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:15:23,395 INFO L124 PetriNetUnfolderBase]: 6561/13617 cut-off events. [2023-08-26 09:15:23,396 INFO L125 PetriNetUnfolderBase]: For 3722/3722 co-relation queries the response was YES. [2023-08-26 09:15:23,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28843 conditions, 13617 events. 6561/13617 cut-off events. For 3722/3722 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 105290 event pairs, 1166 based on Foata normal form. 1/13562 useless extension candidates. Maximal degree in co-relation 28832. Up to 3965 conditions per place. [2023-08-26 09:15:23,457 INFO L140 encePairwiseOnDemand]: 1439/1449 looper letters, 148 selfloop transitions, 17 changer transitions 1/197 dead transitions. [2023-08-26 09:15:23,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 197 transitions, 950 flow [2023-08-26 09:15:23,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 09:15:23,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 09:15:23,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3187 transitions. [2023-08-26 09:15:23,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398895790200138 [2023-08-26 09:15:23,462 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3187 transitions. [2023-08-26 09:15:23,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3187 transitions. [2023-08-26 09:15:23,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:15:23,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3187 transitions. [2023-08-26 09:15:23,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 637.4) internal successors, (3187), 5 states have internal predecessors, (3187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:23,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1449.0) internal successors, (8694), 6 states have internal predecessors, (8694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:23,472 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1449.0) internal successors, (8694), 6 states have internal predecessors, (8694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:23,472 INFO L175 Difference]: Start difference. First operand has 95 places, 86 transitions, 273 flow. Second operand 5 states and 3187 transitions. [2023-08-26 09:15:23,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 197 transitions, 950 flow [2023-08-26 09:15:23,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 197 transitions, 942 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 09:15:23,497 INFO L231 Difference]: Finished difference. Result has 101 places, 101 transitions, 402 flow [2023-08-26 09:15:23,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1449, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=402, PETRI_PLACES=101, PETRI_TRANSITIONS=101} [2023-08-26 09:15:23,497 INFO L281 CegarLoopForPetriNet]: 152 programPoint places, -51 predicate places. [2023-08-26 09:15:23,497 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 101 transitions, 402 flow [2023-08-26 09:15:23,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 611.2) internal successors, (3056), 5 states have internal predecessors, (3056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:23,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:15:23,498 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:15:23,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-26 09:15:23,498 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err21ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err22ASSERT_VIOLATIONDATA_RACE (and 122 more)] === [2023-08-26 09:15:23,498 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:15:23,498 INFO L85 PathProgramCache]: Analyzing trace with hash 6243466, now seen corresponding path program 1 times [2023-08-26 09:15:23,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:15:23,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402391307] [2023-08-26 09:15:23,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:15:23,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:15:23,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:15:23,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:15:23,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:15:23,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402391307] [2023-08-26 09:15:23,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402391307] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:15:23,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:15:23,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 09:15:23,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850572275] [2023-08-26 09:15:23,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:15:23,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 09:15:23,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:15:23,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 09:15:23,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 09:15:23,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 588 out of 1449 [2023-08-26 09:15:23,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 101 transitions, 402 flow. Second operand has 4 states, 4 states have (on average 596.25) internal successors, (2385), 4 states have internal predecessors, (2385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:23,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:15:23,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 588 of 1449 [2023-08-26 09:15:23,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:15:24,894 INFO L124 PetriNetUnfolderBase]: 9280/17581 cut-off events. [2023-08-26 09:15:24,894 INFO L125 PetriNetUnfolderBase]: For 8145/8165 co-relation queries the response was YES. [2023-08-26 09:15:24,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41344 conditions, 17581 events. 9280/17581 cut-off events. For 8145/8165 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 133575 event pairs, 7209 based on Foata normal form. 10/17500 useless extension candidates. Maximal degree in co-relation 41329. Up to 13895 conditions per place. [2023-08-26 09:15:24,950 INFO L140 encePairwiseOnDemand]: 1444/1449 looper letters, 103 selfloop transitions, 4 changer transitions 7/136 dead transitions. [2023-08-26 09:15:24,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 136 transitions, 790 flow [2023-08-26 09:15:24,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 09:15:24,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 09:15:24,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2431 transitions. [2023-08-26 09:15:24,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4194271911663216 [2023-08-26 09:15:24,954 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2431 transitions. [2023-08-26 09:15:24,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2431 transitions. [2023-08-26 09:15:24,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:15:24,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2431 transitions. [2023-08-26 09:15:24,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 607.75) internal successors, (2431), 4 states have internal predecessors, (2431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:24,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1449.0) internal successors, (7245), 5 states have internal predecessors, (7245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:24,960 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1449.0) internal successors, (7245), 5 states have internal predecessors, (7245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:24,960 INFO L175 Difference]: Start difference. First operand has 101 places, 101 transitions, 402 flow. Second operand 4 states and 2431 transitions. [2023-08-26 09:15:24,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 136 transitions, 790 flow [2023-08-26 09:15:24,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 136 transitions, 790 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 09:15:24,975 INFO L231 Difference]: Finished difference. Result has 105 places, 99 transitions, 391 flow [2023-08-26 09:15:24,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1449, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=391, PETRI_PLACES=105, PETRI_TRANSITIONS=99} [2023-08-26 09:15:24,975 INFO L281 CegarLoopForPetriNet]: 152 programPoint places, -47 predicate places. [2023-08-26 09:15:24,975 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 99 transitions, 391 flow [2023-08-26 09:15:24,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 596.25) internal successors, (2385), 4 states have internal predecessors, (2385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:24,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:15:24,976 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:15:24,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-26 09:15:24,976 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err21ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err22ASSERT_VIOLATIONDATA_RACE (and 122 more)] === [2023-08-26 09:15:24,976 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:15:24,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1409553889, now seen corresponding path program 1 times [2023-08-26 09:15:24,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:15:24,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038176127] [2023-08-26 09:15:24,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:15:24,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:15:25,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:15:25,080 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 09:15:25,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:15:25,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038176127] [2023-08-26 09:15:25,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038176127] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:15:25,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657665571] [2023-08-26 09:15:25,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:15:25,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:15:25,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:15:25,086 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:15:25,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-26 09:15:25,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:15:25,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-26 09:15:25,250 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:15:25,360 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 09:15:25,360 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:15:25,408 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 09:15:25,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657665571] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-26 09:15:25,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-26 09:15:25,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2023-08-26 09:15:25,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095045556] [2023-08-26 09:15:25,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:15:25,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 09:15:25,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:15:25,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 09:15:25,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-08-26 09:15:25,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 588 out of 1449 [2023-08-26 09:15:25,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 99 transitions, 391 flow. Second operand has 5 states, 5 states have (on average 593.4) internal successors, (2967), 5 states have internal predecessors, (2967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:25,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:15:25,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 588 of 1449 [2023-08-26 09:15:25,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:15:26,931 INFO L124 PetriNetUnfolderBase]: 11345/20104 cut-off events. [2023-08-26 09:15:26,931 INFO L125 PetriNetUnfolderBase]: For 10113/10125 co-relation queries the response was YES. [2023-08-26 09:15:26,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48227 conditions, 20104 events. 11345/20104 cut-off events. For 10113/10125 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 141954 event pairs, 8369 based on Foata normal form. 114/20124 useless extension candidates. Maximal degree in co-relation 48210. Up to 16026 conditions per place. [2023-08-26 09:15:27,016 INFO L140 encePairwiseOnDemand]: 1443/1449 looper letters, 107 selfloop transitions, 5 changer transitions 0/129 dead transitions. [2023-08-26 09:15:27,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 129 transitions, 739 flow [2023-08-26 09:15:27,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 09:15:27,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 09:15:27,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3023 transitions. [2023-08-26 09:15:27,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41725327812284335 [2023-08-26 09:15:27,020 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3023 transitions. [2023-08-26 09:15:27,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3023 transitions. [2023-08-26 09:15:27,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:15:27,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3023 transitions. [2023-08-26 09:15:27,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 604.6) internal successors, (3023), 5 states have internal predecessors, (3023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:27,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1449.0) internal successors, (8694), 6 states have internal predecessors, (8694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:27,027 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1449.0) internal successors, (8694), 6 states have internal predecessors, (8694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:27,027 INFO L175 Difference]: Start difference. First operand has 105 places, 99 transitions, 391 flow. Second operand 5 states and 3023 transitions. [2023-08-26 09:15:27,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 129 transitions, 739 flow [2023-08-26 09:15:27,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 129 transitions, 707 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-08-26 09:15:27,088 INFO L231 Difference]: Finished difference. Result has 105 places, 100 transitions, 390 flow [2023-08-26 09:15:27,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1449, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=390, PETRI_PLACES=105, PETRI_TRANSITIONS=100} [2023-08-26 09:15:27,089 INFO L281 CegarLoopForPetriNet]: 152 programPoint places, -47 predicate places. [2023-08-26 09:15:27,089 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 100 transitions, 390 flow [2023-08-26 09:15:27,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 593.4) internal successors, (2967), 5 states have internal predecessors, (2967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:27,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:15:27,089 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:15:27,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-26 09:15:27,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-26 09:15:27,294 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err21ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err22ASSERT_VIOLATIONDATA_RACE (and 122 more)] === [2023-08-26 09:15:27,294 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:15:27,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1508817157, now seen corresponding path program 1 times [2023-08-26 09:15:27,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:15:27,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712486325] [2023-08-26 09:15:27,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:15:27,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:15:27,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:15:27,372 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:15:27,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:15:27,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712486325] [2023-08-26 09:15:27,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712486325] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:15:27,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560706300] [2023-08-26 09:15:27,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:15:27,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:15:27,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:15:27,377 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:15:27,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-26 09:15:27,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:15:27,506 INFO L262 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-26 09:15:27,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:15:27,558 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:15:27,558 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:15:27,586 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:15:27,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560706300] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-26 09:15:27,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-26 09:15:27,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2023-08-26 09:15:27,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401002747] [2023-08-26 09:15:27,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:15:27,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 09:15:27,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:15:27,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 09:15:27,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-08-26 09:15:27,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 588 out of 1449 [2023-08-26 09:15:27,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 100 transitions, 390 flow. Second operand has 5 states, 5 states have (on average 593.2) internal successors, (2966), 5 states have internal predecessors, (2966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:27,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:15:27,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 588 of 1449 [2023-08-26 09:15:27,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:15:28,694 INFO L124 PetriNetUnfolderBase]: 8937/16388 cut-off events. [2023-08-26 09:15:28,694 INFO L125 PetriNetUnfolderBase]: For 7892/7892 co-relation queries the response was YES. [2023-08-26 09:15:28,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39881 conditions, 16388 events. 8937/16388 cut-off events. For 7892/7892 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 119945 event pairs, 6347 based on Foata normal form. 94/16396 useless extension candidates. Maximal degree in co-relation 39865. Up to 12718 conditions per place. [2023-08-26 09:15:28,770 INFO L140 encePairwiseOnDemand]: 1443/1449 looper letters, 99 selfloop transitions, 5 changer transitions 0/126 dead transitions. [2023-08-26 09:15:28,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 126 transitions, 712 flow [2023-08-26 09:15:28,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 09:15:28,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 09:15:28,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3015 transitions. [2023-08-26 09:15:28,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161490683229814 [2023-08-26 09:15:28,774 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3015 transitions. [2023-08-26 09:15:28,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3015 transitions. [2023-08-26 09:15:28,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:15:28,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3015 transitions. [2023-08-26 09:15:28,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 603.0) internal successors, (3015), 5 states have internal predecessors, (3015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:28,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1449.0) internal successors, (8694), 6 states have internal predecessors, (8694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:28,781 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1449.0) internal successors, (8694), 6 states have internal predecessors, (8694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:28,781 INFO L175 Difference]: Start difference. First operand has 105 places, 100 transitions, 390 flow. Second operand 5 states and 3015 transitions. [2023-08-26 09:15:28,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 126 transitions, 712 flow [2023-08-26 09:15:28,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 126 transitions, 704 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-26 09:15:28,808 INFO L231 Difference]: Finished difference. Result has 108 places, 101 transitions, 407 flow [2023-08-26 09:15:28,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1449, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=407, PETRI_PLACES=108, PETRI_TRANSITIONS=101} [2023-08-26 09:15:28,809 INFO L281 CegarLoopForPetriNet]: 152 programPoint places, -44 predicate places. [2023-08-26 09:15:28,809 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 101 transitions, 407 flow [2023-08-26 09:15:28,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 593.2) internal successors, (2966), 5 states have internal predecessors, (2966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:28,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:15:28,809 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:15:28,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-26 09:15:29,013 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,SelfDestructingSolverStorable16 [2023-08-26 09:15:29,013 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err21ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err22ASSERT_VIOLATIONDATA_RACE (and 122 more)] === [2023-08-26 09:15:29,013 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:15:29,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1122421217, now seen corresponding path program 1 times [2023-08-26 09:15:29,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:15:29,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735150610] [2023-08-26 09:15:29,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:15:29,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:15:29,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:15:29,943 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:15:29,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:15:29,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735150610] [2023-08-26 09:15:29,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735150610] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:15:29,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395429579] [2023-08-26 09:15:29,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:15:29,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:15:29,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:15:29,944 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:15:29,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-26 09:15:30,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:15:30,107 INFO L262 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 92 conjunts are in the unsatisfiable core [2023-08-26 09:15:30,112 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:15:30,154 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-26 09:15:30,188 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-26 09:15:30,255 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-26 09:15:30,629 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-08-26 09:15:30,770 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:15:30,771 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:15:31,123 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 09:15:31,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395429579] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:15:31,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:15:31,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 11] total 29 [2023-08-26 09:15:31,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502965888] [2023-08-26 09:15:31,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:15:31,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-26 09:15:31,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:15:31,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-26 09:15:31,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=748, Unknown=3, NotChecked=0, Total=870 [2023-08-26 09:15:31,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 498 out of 1449 [2023-08-26 09:15:31,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 101 transitions, 407 flow. Second operand has 30 states, 30 states have (on average 502.76666666666665) internal successors, (15083), 30 states have internal predecessors, (15083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:31,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:15:31,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 498 of 1449 [2023-08-26 09:15:31,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:15:45,433 INFO L124 PetriNetUnfolderBase]: 99835/151021 cut-off events. [2023-08-26 09:15:45,433 INFO L125 PetriNetUnfolderBase]: For 49945/49945 co-relation queries the response was YES. [2023-08-26 09:15:45,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 377045 conditions, 151021 events. 99835/151021 cut-off events. For 49945/49945 co-relation queries the response was YES. Maximal size of possible extension queue 1321. Compared 1043367 event pairs, 8410 based on Foata normal form. 1/151022 useless extension candidates. Maximal degree in co-relation 377027. Up to 37508 conditions per place. [2023-08-26 09:15:46,433 INFO L140 encePairwiseOnDemand]: 1428/1449 looper letters, 739 selfloop transitions, 104 changer transitions 1/844 dead transitions. [2023-08-26 09:15:46,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 844 transitions, 4241 flow [2023-08-26 09:15:46,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-26 09:15:46,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-08-26 09:15:46,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 15265 transitions. [2023-08-26 09:15:46,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36327074557959116 [2023-08-26 09:15:46,449 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 15265 transitions. [2023-08-26 09:15:46,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 15265 transitions. [2023-08-26 09:15:46,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:15:46,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 15265 transitions. [2023-08-26 09:15:46,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 526.3793103448276) internal successors, (15265), 29 states have internal predecessors, (15265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:46,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 1449.0) internal successors, (43470), 30 states have internal predecessors, (43470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:46,487 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 1449.0) internal successors, (43470), 30 states have internal predecessors, (43470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:46,487 INFO L175 Difference]: Start difference. First operand has 108 places, 101 transitions, 407 flow. Second operand 29 states and 15265 transitions. [2023-08-26 09:15:46,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 844 transitions, 4241 flow [2023-08-26 09:15:47,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 844 transitions, 4221 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-26 09:15:47,371 INFO L231 Difference]: Finished difference. Result has 154 places, 194 transitions, 1380 flow [2023-08-26 09:15:47,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1449, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=1380, PETRI_PLACES=154, PETRI_TRANSITIONS=194} [2023-08-26 09:15:47,371 INFO L281 CegarLoopForPetriNet]: 152 programPoint places, 2 predicate places. [2023-08-26 09:15:47,371 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 194 transitions, 1380 flow [2023-08-26 09:15:47,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 502.76666666666665) internal successors, (15083), 30 states have internal predecessors, (15083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:47,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:15:47,373 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:15:47,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-26 09:15:47,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-26 09:15:47,574 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err21ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err22ASSERT_VIOLATIONDATA_RACE (and 122 more)] === [2023-08-26 09:15:47,574 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:15:47,574 INFO L85 PathProgramCache]: Analyzing trace with hash 2090693497, now seen corresponding path program 2 times [2023-08-26 09:15:47,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:15:47,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302535932] [2023-08-26 09:15:47,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:15:47,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:15:47,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:15:48,468 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:15:48,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:15:48,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302535932] [2023-08-26 09:15:48,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302535932] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:15:48,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038061093] [2023-08-26 09:15:48,470 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 09:15:48,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:15:48,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:15:48,471 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:15:48,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-26 09:15:48,633 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 09:15:48,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:15:48,636 INFO L262 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 81 conjunts are in the unsatisfiable core [2023-08-26 09:15:48,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:15:49,060 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-08-26 09:15:49,209 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 09:15:49,210 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:15:49,315 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 09:15:49,315 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 16 [2023-08-26 09:15:49,328 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-26 09:15:49,329 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 12 [2023-08-26 09:15:49,480 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 09:15:49,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038061093] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:15:49,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:15:49,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 10] total 25 [2023-08-26 09:15:49,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593137168] [2023-08-26 09:15:49,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:15:49,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-26 09:15:49,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:15:49,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-26 09:15:49,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2023-08-26 09:15:49,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 517 out of 1449 [2023-08-26 09:15:49,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 194 transitions, 1380 flow. Second operand has 26 states, 26 states have (on average 521.8461538461538) internal successors, (13568), 26 states have internal predecessors, (13568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:49,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:15:49,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 517 of 1449 [2023-08-26 09:15:49,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:15:56,709 INFO L124 PetriNetUnfolderBase]: 33039/53714 cut-off events. [2023-08-26 09:15:56,709 INFO L125 PetriNetUnfolderBase]: For 84408/84408 co-relation queries the response was YES. [2023-08-26 09:15:56,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161894 conditions, 53714 events. 33039/53714 cut-off events. For 84408/84408 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 356336 event pairs, 6275 based on Foata normal form. 1/53715 useless extension candidates. Maximal degree in co-relation 161855. Up to 17869 conditions per place. [2023-08-26 09:15:57,097 INFO L140 encePairwiseOnDemand]: 1428/1449 looper letters, 593 selfloop transitions, 120 changer transitions 1/722 dead transitions. [2023-08-26 09:15:57,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 722 transitions, 4785 flow [2023-08-26 09:15:57,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-26 09:15:57,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-26 09:15:57,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 13042 transitions. [2023-08-26 09:15:57,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3750287554635381 [2023-08-26 09:15:57,107 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 13042 transitions. [2023-08-26 09:15:57,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 13042 transitions. [2023-08-26 09:15:57,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:15:57,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 13042 transitions. [2023-08-26 09:15:57,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 543.4166666666666) internal successors, (13042), 24 states have internal predecessors, (13042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:57,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 1449.0) internal successors, (36225), 25 states have internal predecessors, (36225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:57,136 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 1449.0) internal successors, (36225), 25 states have internal predecessors, (36225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:57,136 INFO L175 Difference]: Start difference. First operand has 154 places, 194 transitions, 1380 flow. Second operand 24 states and 13042 transitions. [2023-08-26 09:15:57,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 722 transitions, 4785 flow [2023-08-26 09:15:57,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 722 transitions, 4660 flow, removed 38 selfloop flow, removed 4 redundant places. [2023-08-26 09:15:57,889 INFO L231 Difference]: Finished difference. Result has 183 places, 237 transitions, 2027 flow [2023-08-26 09:15:57,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1449, PETRI_DIFFERENCE_MINUEND_FLOW=1288, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2027, PETRI_PLACES=183, PETRI_TRANSITIONS=237} [2023-08-26 09:15:57,890 INFO L281 CegarLoopForPetriNet]: 152 programPoint places, 31 predicate places. [2023-08-26 09:15:57,890 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 237 transitions, 2027 flow [2023-08-26 09:15:57,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 521.8461538461538) internal successors, (13568), 26 states have internal predecessors, (13568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:57,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:15:57,891 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:15:57,896 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-26 09:15:58,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:15:58,092 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err21ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err22ASSERT_VIOLATIONDATA_RACE (and 122 more)] === [2023-08-26 09:15:58,092 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:15:58,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1895519647, now seen corresponding path program 3 times [2023-08-26 09:15:58,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:15:58,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571079195] [2023-08-26 09:15:58,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:15:58,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:15:58,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:15:58,962 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:15:58,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:15:58,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571079195] [2023-08-26 09:15:58,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571079195] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:15:58,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064345399] [2023-08-26 09:15:58,963 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 09:15:58,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:15:58,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:15:58,964 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:15:58,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-26 09:15:59,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-26 09:15:59,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:15:59,138 INFO L262 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 73 conjunts are in the unsatisfiable core [2023-08-26 09:15:59,140 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:15:59,418 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 7 [2023-08-26 09:15:59,610 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 09:15:59,610 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:15:59,715 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 09:15:59,715 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 16 [2023-08-26 09:15:59,725 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-26 09:15:59,726 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 12 [2023-08-26 09:15:59,859 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 09:15:59,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064345399] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:15:59,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:15:59,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 10] total 24 [2023-08-26 09:15:59,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928574412] [2023-08-26 09:15:59,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:15:59,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-26 09:15:59,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:15:59,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-26 09:15:59,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2023-08-26 09:15:59,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 519 out of 1449 [2023-08-26 09:15:59,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 237 transitions, 2027 flow. Second operand has 25 states, 25 states have (on average 523.92) internal successors, (13098), 25 states have internal predecessors, (13098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:15:59,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:15:59,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 519 of 1449 [2023-08-26 09:15:59,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:16:08,946 INFO L124 PetriNetUnfolderBase]: 38086/61979 cut-off events. [2023-08-26 09:16:08,947 INFO L125 PetriNetUnfolderBase]: For 121973/121973 co-relation queries the response was YES. [2023-08-26 09:16:09,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194513 conditions, 61979 events. 38086/61979 cut-off events. For 121973/121973 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 420436 event pairs, 8734 based on Foata normal form. 1/61980 useless extension candidates. Maximal degree in co-relation 194464. Up to 25069 conditions per place. [2023-08-26 09:16:09,556 INFO L140 encePairwiseOnDemand]: 1428/1449 looper letters, 611 selfloop transitions, 138 changer transitions 1/758 dead transitions. [2023-08-26 09:16:09,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 758 transitions, 5514 flow [2023-08-26 09:16:09,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-26 09:16:09,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-26 09:16:09,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 12579 transitions. [2023-08-26 09:16:09,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37744171392564585 [2023-08-26 09:16:09,566 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 12579 transitions. [2023-08-26 09:16:09,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 12579 transitions. [2023-08-26 09:16:09,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:16:09,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 12579 transitions. [2023-08-26 09:16:09,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 546.9130434782609) internal successors, (12579), 23 states have internal predecessors, (12579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:16:09,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 1449.0) internal successors, (34776), 24 states have internal predecessors, (34776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:16:09,600 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 1449.0) internal successors, (34776), 24 states have internal predecessors, (34776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:16:09,600 INFO L175 Difference]: Start difference. First operand has 183 places, 237 transitions, 2027 flow. Second operand 23 states and 12579 transitions. [2023-08-26 09:16:09,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 758 transitions, 5514 flow [2023-08-26 09:16:10,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 758 transitions, 5442 flow, removed 20 selfloop flow, removed 4 redundant places. [2023-08-26 09:16:10,939 INFO L231 Difference]: Finished difference. Result has 207 places, 269 transitions, 2670 flow [2023-08-26 09:16:10,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1449, PETRI_DIFFERENCE_MINUEND_FLOW=1958, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2670, PETRI_PLACES=207, PETRI_TRANSITIONS=269} [2023-08-26 09:16:10,939 INFO L281 CegarLoopForPetriNet]: 152 programPoint places, 55 predicate places. [2023-08-26 09:16:10,939 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 269 transitions, 2670 flow [2023-08-26 09:16:10,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 523.92) internal successors, (13098), 25 states have internal predecessors, (13098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:16:10,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:16:10,941 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:16:10,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-26 09:16:11,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:16:11,161 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err21ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err22ASSERT_VIOLATIONDATA_RACE (and 122 more)] === [2023-08-26 09:16:11,161 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:16:11,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1804542643, now seen corresponding path program 1 times [2023-08-26 09:16:11,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:16:11,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123923281] [2023-08-26 09:16:11,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:16:11,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:16:11,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:16:11,982 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:16:11,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:16:11,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123923281] [2023-08-26 09:16:11,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123923281] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:16:11,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168803515] [2023-08-26 09:16:11,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:16:11,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:16:11,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:16:11,984 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:16:11,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-26 09:16:12,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:16:12,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 88 conjunts are in the unsatisfiable core [2023-08-26 09:16:12,168 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:16:12,193 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-26 09:16:12,223 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-26 09:16:12,275 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-26 09:16:12,546 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-08-26 09:16:12,698 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:16:12,699 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:16:12,970 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 09:16:12,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168803515] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:16:12,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:16:12,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 10] total 28 [2023-08-26 09:16:12,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566476065] [2023-08-26 09:16:12,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:16:12,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-26 09:16:12,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:16:12,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-26 09:16:12,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=686, Unknown=2, NotChecked=0, Total=812 [2023-08-26 09:16:12,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 478 out of 1449 [2023-08-26 09:16:12,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 269 transitions, 2670 flow. Second operand has 29 states, 29 states have (on average 482.9655172413793) internal successors, (14006), 29 states have internal predecessors, (14006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:16:12,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:16:12,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 478 of 1449 [2023-08-26 09:16:12,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:16:44,654 INFO L124 PetriNetUnfolderBase]: 153847/233379 cut-off events. [2023-08-26 09:16:44,654 INFO L125 PetriNetUnfolderBase]: For 499185/499185 co-relation queries the response was YES. [2023-08-26 09:16:47,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 734385 conditions, 233379 events. 153847/233379 cut-off events. For 499185/499185 co-relation queries the response was YES. Maximal size of possible extension queue 1534. Compared 1696291 event pairs, 32157 based on Foata normal form. 1/233380 useless extension candidates. Maximal degree in co-relation 734330. Up to 108111 conditions per place. [2023-08-26 09:16:47,814 INFO L140 encePairwiseOnDemand]: 1428/1449 looper letters, 753 selfloop transitions, 173 changer transitions 1/927 dead transitions. [2023-08-26 09:16:47,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 927 transitions, 7155 flow [2023-08-26 09:16:47,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-08-26 09:16:47,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-08-26 09:16:47,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 15104 transitions. [2023-08-26 09:16:47,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3474580170232344 [2023-08-26 09:16:47,824 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 15104 transitions. [2023-08-26 09:16:47,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 15104 transitions. [2023-08-26 09:16:47,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:16:47,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 15104 transitions. [2023-08-26 09:16:47,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 503.46666666666664) internal successors, (15104), 30 states have internal predecessors, (15104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:16:47,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 1449.0) internal successors, (44919), 31 states have internal predecessors, (44919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:16:47,854 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 1449.0) internal successors, (44919), 31 states have internal predecessors, (44919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:16:47,854 INFO L175 Difference]: Start difference. First operand has 207 places, 269 transitions, 2670 flow. Second operand 30 states and 15104 transitions. [2023-08-26 09:16:47,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 927 transitions, 7155 flow [2023-08-26 09:17:02,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 927 transitions, 7000 flow, removed 32 selfloop flow, removed 7 redundant places. [2023-08-26 09:17:02,774 INFO L231 Difference]: Finished difference. Result has 241 places, 328 transitions, 3730 flow [2023-08-26 09:17:02,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1449, PETRI_DIFFERENCE_MINUEND_FLOW=2536, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=3730, PETRI_PLACES=241, PETRI_TRANSITIONS=328} [2023-08-26 09:17:02,774 INFO L281 CegarLoopForPetriNet]: 152 programPoint places, 89 predicate places. [2023-08-26 09:17:02,774 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 328 transitions, 3730 flow [2023-08-26 09:17:02,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 482.9655172413793) internal successors, (14006), 29 states have internal predecessors, (14006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:17:02,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:17:02,776 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:17:02,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-26 09:17:02,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:17:02,977 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err21ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err22ASSERT_VIOLATIONDATA_RACE (and 122 more)] === [2023-08-26 09:17:02,977 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:17:02,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1732471109, now seen corresponding path program 1 times [2023-08-26 09:17:02,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:17:02,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131445] [2023-08-26 09:17:02,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:17:02,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:17:03,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:17:03,643 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:17:03,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:17:03,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131445] [2023-08-26 09:17:03,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131445] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:17:03,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511599262] [2023-08-26 09:17:03,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:17:03,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:17:03,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:17:03,644 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:17:03,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-26 09:17:03,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:17:03,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 88 conjunts are in the unsatisfiable core [2023-08-26 09:17:03,821 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:17:03,846 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-26 09:17:03,879 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-26 09:17:03,922 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-26 09:17:04,273 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-08-26 09:17:04,406 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:17:04,406 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:17:04,676 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 09:17:04,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511599262] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:17:04,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:17:04,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 9] total 26 [2023-08-26 09:17:04,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219509368] [2023-08-26 09:17:04,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:17:04,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-26 09:17:04,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:17:04,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-26 09:17:04,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=584, Unknown=1, NotChecked=0, Total=702 [2023-08-26 09:17:04,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 478 out of 1449 [2023-08-26 09:17:04,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 328 transitions, 3730 flow. Second operand has 27 states, 27 states have (on average 483.6296296296296) internal successors, (13058), 27 states have internal predecessors, (13058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:17:04,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:17:04,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 478 of 1449 [2023-08-26 09:17:04,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:17:47,365 INFO L124 PetriNetUnfolderBase]: 194835/295140 cut-off events. [2023-08-26 09:17:47,365 INFO L125 PetriNetUnfolderBase]: For 795834/795834 co-relation queries the response was YES. [2023-08-26 09:17:51,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 984789 conditions, 295140 events. 194835/295140 cut-off events. For 795834/795834 co-relation queries the response was YES. Maximal size of possible extension queue 2090. Compared 2227371 event pairs, 42112 based on Foata normal form. 1/295141 useless extension candidates. Maximal degree in co-relation 984721. Up to 153809 conditions per place. [2023-08-26 09:17:52,179 INFO L140 encePairwiseOnDemand]: 1429/1449 looper letters, 758 selfloop transitions, 182 changer transitions 1/941 dead transitions. [2023-08-26 09:17:52,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 941 transitions, 9006 flow [2023-08-26 09:17:52,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-26 09:17:52,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-26 09:17:52,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 11183 transitions. [2023-08-26 09:17:52,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35080619863228557 [2023-08-26 09:17:52,186 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 11183 transitions. [2023-08-26 09:17:52,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 11183 transitions. [2023-08-26 09:17:52,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:17:52,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 11183 transitions. [2023-08-26 09:17:52,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 508.3181818181818) internal successors, (11183), 22 states have internal predecessors, (11183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:17:52,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 1449.0) internal successors, (33327), 23 states have internal predecessors, (33327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:17:52,208 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 1449.0) internal successors, (33327), 23 states have internal predecessors, (33327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:17:52,208 INFO L175 Difference]: Start difference. First operand has 241 places, 328 transitions, 3730 flow. Second operand 22 states and 11183 transitions. [2023-08-26 09:17:52,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 941 transitions, 9006 flow [2023-08-26 09:18:23,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 941 transitions, 8865 flow, removed 37 selfloop flow, removed 6 redundant places. [2023-08-26 09:18:23,376 INFO L231 Difference]: Finished difference. Result has 266 places, 410 transitions, 5454 flow [2023-08-26 09:18:23,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1449, PETRI_DIFFERENCE_MINUEND_FLOW=3600, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=5454, PETRI_PLACES=266, PETRI_TRANSITIONS=410} [2023-08-26 09:18:23,377 INFO L281 CegarLoopForPetriNet]: 152 programPoint places, 114 predicate places. [2023-08-26 09:18:23,377 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 410 transitions, 5454 flow [2023-08-26 09:18:23,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 483.6296296296296) internal successors, (13058), 27 states have internal predecessors, (13058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:18:23,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:18:23,378 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:18:23,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-26 09:18:23,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:18:23,579 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err21ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err22ASSERT_VIOLATIONDATA_RACE (and 122 more)] === [2023-08-26 09:18:23,579 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:18:23,579 INFO L85 PathProgramCache]: Analyzing trace with hash 609073361, now seen corresponding path program 4 times [2023-08-26 09:18:23,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:18:23,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86021773] [2023-08-26 09:18:23,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:18:23,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:18:23,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:18:24,238 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:18:24,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:18:24,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86021773] [2023-08-26 09:18:24,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86021773] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:18:24,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058535686] [2023-08-26 09:18:24,239 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 09:18:24,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:18:24,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:18:24,240 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:18:24,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-26 09:18:24,520 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 09:18:24,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:18:24,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 83 conjunts are in the unsatisfiable core [2023-08-26 09:18:24,525 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:18:24,888 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-08-26 09:18:25,007 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 09:18:25,007 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:18:25,093 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 09:18:25,093 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 16 [2023-08-26 09:18:25,100 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-26 09:18:25,101 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 12 [2023-08-26 09:18:25,245 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 09:18:25,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058535686] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:18:25,246 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:18:25,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 10] total 25 [2023-08-26 09:18:25,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940326617] [2023-08-26 09:18:25,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:18:25,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-26 09:18:25,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:18:25,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-26 09:18:25,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=546, Unknown=0, NotChecked=0, Total=650 [2023-08-26 09:18:25,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 517 out of 1449 [2023-08-26 09:18:25,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 410 transitions, 5454 flow. Second operand has 26 states, 26 states have (on average 521.8846153846154) internal successors, (13569), 26 states have internal predecessors, (13569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:18:25,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:18:25,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 517 of 1449 [2023-08-26 09:18:25,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:18:42,202 INFO L124 PetriNetUnfolderBase]: 59743/97277 cut-off events. [2023-08-26 09:18:42,203 INFO L125 PetriNetUnfolderBase]: For 374542/374543 co-relation queries the response was YES. [2023-08-26 09:18:43,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 348072 conditions, 97277 events. 59743/97277 cut-off events. For 374542/374543 co-relation queries the response was YES. Maximal size of possible extension queue 817. Compared 713136 event pairs, 14677 based on Foata normal form. 2/97279 useless extension candidates. Maximal degree in co-relation 347994. Up to 48415 conditions per place. [2023-08-26 09:18:44,095 INFO L140 encePairwiseOnDemand]: 1428/1449 looper letters, 695 selfloop transitions, 239 changer transitions 1/943 dead transitions. [2023-08-26 09:18:44,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 943 transitions, 9769 flow [2023-08-26 09:18:44,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-26 09:18:44,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-26 09:18:44,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 13594 transitions. [2023-08-26 09:18:44,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37526570048309177 [2023-08-26 09:18:44,103 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 13594 transitions. [2023-08-26 09:18:44,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 13594 transitions. [2023-08-26 09:18:44,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:18:44,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 13594 transitions. [2023-08-26 09:18:44,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 543.76) internal successors, (13594), 25 states have internal predecessors, (13594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:18:44,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 1449.0) internal successors, (37674), 26 states have internal predecessors, (37674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:18:44,129 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 1449.0) internal successors, (37674), 26 states have internal predecessors, (37674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:18:44,129 INFO L175 Difference]: Start difference. First operand has 266 places, 410 transitions, 5454 flow. Second operand 25 states and 13594 transitions. [2023-08-26 09:18:44,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 943 transitions, 9769 flow [2023-08-26 09:18:50,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 943 transitions, 9555 flow, removed 88 selfloop flow, removed 4 redundant places. [2023-08-26 09:18:50,127 INFO L231 Difference]: Finished difference. Result has 291 places, 440 transitions, 6372 flow [2023-08-26 09:18:50,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1449, PETRI_DIFFERENCE_MINUEND_FLOW=5252, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=6372, PETRI_PLACES=291, PETRI_TRANSITIONS=440} [2023-08-26 09:18:50,128 INFO L281 CegarLoopForPetriNet]: 152 programPoint places, 139 predicate places. [2023-08-26 09:18:50,128 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 440 transitions, 6372 flow [2023-08-26 09:18:50,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 521.8846153846154) internal successors, (13569), 26 states have internal predecessors, (13569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:18:50,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:18:50,129 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:18:50,134 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-26 09:18:50,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-08-26 09:18:50,330 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err21ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err22ASSERT_VIOLATIONDATA_RACE (and 122 more)] === [2023-08-26 09:18:50,330 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:18:50,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1704531197, now seen corresponding path program 2 times [2023-08-26 09:18:50,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:18:50,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092121432] [2023-08-26 09:18:50,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:18:50,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:18:50,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:18:50,995 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:18:50,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:18:50,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092121432] [2023-08-26 09:18:50,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092121432] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:18:50,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807158070] [2023-08-26 09:18:50,995 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 09:18:50,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:18:50,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:18:50,996 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:18:50,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-26 09:18:51,178 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 09:18:51,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:18:51,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 75 conjunts are in the unsatisfiable core [2023-08-26 09:18:51,181 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:18:51,537 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-08-26 09:18:51,716 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 09:18:51,716 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:18:51,801 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 09:18:51,801 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 18 [2023-08-26 09:18:51,810 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-26 09:18:51,811 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 14 [2023-08-26 09:18:51,927 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 09:18:51,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807158070] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:18:51,927 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:18:51,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 8] total 22 [2023-08-26 09:18:51,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641666385] [2023-08-26 09:18:51,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:18:51,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-26 09:18:51,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:18:51,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-26 09:18:51,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2023-08-26 09:18:51,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 497 out of 1449 [2023-08-26 09:18:51,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 440 transitions, 6372 flow. Second operand has 23 states, 23 states have (on average 502.4347826086956) internal successors, (11556), 23 states have internal predecessors, (11556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:18:51,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:18:51,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 497 of 1449 [2023-08-26 09:18:51,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand