/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/weaver/chl-word-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 19:22:23,729 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 19:22:23,783 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-25 19:22:23,786 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 19:22:23,786 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 19:22:23,811 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 19:22:23,811 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 19:22:23,815 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 19:22:23,815 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 19:22:23,818 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 19:22:23,818 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 19:22:23,818 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 19:22:23,818 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 19:22:23,819 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 19:22:23,819 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 19:22:23,820 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 19:22:23,820 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 19:22:23,820 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 19:22:23,820 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 19:22:23,820 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 19:22:23,820 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 19:22:23,820 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 19:22:23,821 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 19:22:23,821 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 19:22:23,821 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 19:22:23,821 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 19:22:23,821 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 19:22:23,822 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 19:22:23,822 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 19:22:23,822 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 19:22:23,823 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 19:22:23,823 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 19:22:23,823 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 19:22:23,823 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 19:22:23,823 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 19:22:23,823 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 19:22:24,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 19:22:24,083 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 19:22:24,085 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 19:22:24,086 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 19:22:24,086 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 19:22:24,087 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-word-subst.wvr.c [2023-08-25 19:22:25,019 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 19:22:25,191 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 19:22:25,191 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-subst.wvr.c [2023-08-25 19:22:25,197 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b5b5ab7c/c79b59ef6a97411fb6f8927bab8493f7/FLAG617d2a36a [2023-08-25 19:22:25,205 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b5b5ab7c/c79b59ef6a97411fb6f8927bab8493f7 [2023-08-25 19:22:25,206 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 19:22:25,207 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 19:22:25,208 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 19:22:25,208 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 19:22:25,210 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 19:22:25,210 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 07:22:25" (1/1) ... [2023-08-25 19:22:25,211 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f2ffcd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:22:25, skipping insertion in model container [2023-08-25 19:22:25,211 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 07:22:25" (1/1) ... [2023-08-25 19:22:25,226 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 19:22:25,395 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 19:22:25,400 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 19:22:25,430 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 19:22:25,439 INFO L206 MainTranslator]: Completed translation [2023-08-25 19:22:25,439 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:22:25 WrapperNode [2023-08-25 19:22:25,439 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 19:22:25,440 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 19:22:25,440 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 19:22:25,440 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 19:22:25,444 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:22:25" (1/1) ... [2023-08-25 19:22:25,453 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:22:25" (1/1) ... [2023-08-25 19:22:25,479 INFO L138 Inliner]: procedures = 25, calls = 46, calls flagged for inlining = 10, calls inlined = 14, statements flattened = 282 [2023-08-25 19:22:25,479 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 19:22:25,480 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 19:22:25,480 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 19:22:25,480 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 19:22:25,485 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:22:25" (1/1) ... [2023-08-25 19:22:25,485 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:22:25" (1/1) ... [2023-08-25 19:22:25,491 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:22:25" (1/1) ... [2023-08-25 19:22:25,491 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:22:25" (1/1) ... [2023-08-25 19:22:25,517 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:22:25" (1/1) ... [2023-08-25 19:22:25,524 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:22:25" (1/1) ... [2023-08-25 19:22:25,526 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:22:25" (1/1) ... [2023-08-25 19:22:25,527 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:22:25" (1/1) ... [2023-08-25 19:22:25,530 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 19:22:25,531 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 19:22:25,531 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 19:22:25,531 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 19:22:25,531 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:22:25" (1/1) ... [2023-08-25 19:22:25,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 19:22:25,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:22:25,568 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) [2023-08-25 19:22:25,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-25 19:22:25,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 19:22:25,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 19:22:25,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 19:22:25,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 19:22:25,601 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-25 19:22:25,601 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-25 19:22:25,602 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-25 19:22:25,602 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-25 19:22:25,602 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-25 19:22:25,602 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-25 19:22:25,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 19:22:25,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-25 19:22:25,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 19:22:25,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 19:22:25,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 19:22:25,603 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-25 19:22:25,700 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 19:22:25,701 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 19:22:26,277 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 19:22:26,288 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 19:22:26,289 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-25 19:22:26,291 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 07:22:26 BoogieIcfgContainer [2023-08-25 19:22:26,291 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 19:22:26,293 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 19:22:26,293 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 19:22:26,295 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 19:22:26,295 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 07:22:25" (1/3) ... [2023-08-25 19:22:26,295 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25d8e450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 07:22:26, skipping insertion in model container [2023-08-25 19:22:26,295 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:22:25" (2/3) ... [2023-08-25 19:22:26,296 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25d8e450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 07:22:26, skipping insertion in model container [2023-08-25 19:22:26,296 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 07:22:26" (3/3) ... [2023-08-25 19:22:26,297 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-subst.wvr.c [2023-08-25 19:22:26,308 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 19:22:26,308 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 81 error locations. [2023-08-25 19:22:26,308 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 19:22:26,444 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-25 19:22:26,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 640 places, 663 transitions, 1350 flow [2023-08-25 19:22:26,681 INFO L124 PetriNetUnfolderBase]: 33/660 cut-off events. [2023-08-25 19:22:26,681 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-25 19:22:26,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 673 conditions, 660 events. 33/660 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1764 event pairs, 0 based on Foata normal form. 0/546 useless extension candidates. Maximal degree in co-relation 477. Up to 3 conditions per place. [2023-08-25 19:22:26,696 INFO L82 GeneralOperation]: Start removeDead. Operand has 640 places, 663 transitions, 1350 flow [2023-08-25 19:22:26,708 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 626 places, 649 transitions, 1316 flow [2023-08-25 19:22:26,710 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 19:22:26,718 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 626 places, 649 transitions, 1316 flow [2023-08-25 19:22:26,720 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 626 places, 649 transitions, 1316 flow [2023-08-25 19:22:26,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 626 places, 649 transitions, 1316 flow [2023-08-25 19:22:26,799 INFO L124 PetriNetUnfolderBase]: 33/649 cut-off events. [2023-08-25 19:22:26,799 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-25 19:22:26,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 662 conditions, 649 events. 33/649 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1768 event pairs, 0 based on Foata normal form. 0/536 useless extension candidates. Maximal degree in co-relation 477. Up to 3 conditions per place. [2023-08-25 19:22:26,856 INFO L119 LiptonReduction]: Number of co-enabled transitions 91392 [2023-08-25 19:22:37,216 INFO L134 LiptonReduction]: Checked pairs total: 738457 [2023-08-25 19:22:37,216 INFO L136 LiptonReduction]: Total number of compositions: 553 [2023-08-25 19:22:37,234 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 19:22:37,238 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;@5517fb06, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 19:22:37,239 INFO L358 AbstractCegarLoop]: Starting to check reachability of 141 error locations. [2023-08-25 19:22:37,239 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 19:22:37,240 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-25 19:22:37,240 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 19:22:37,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:22:37,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-25 19:22:37,240 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 137 more)] === [2023-08-25 19:22:37,246 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:22:37,246 INFO L85 PathProgramCache]: Analyzing trace with hash 2359, now seen corresponding path program 1 times [2023-08-25 19:22:37,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:22:37,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982649756] [2023-08-25 19:22:37,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:22:37,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:22:37,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:22:37,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:22:37,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:22:37,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982649756] [2023-08-25 19:22:37,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982649756] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:22:37,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 19:22:37,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-25 19:22:37,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545887454] [2023-08-25 19:22:37,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:22:37,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 19:22:37,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:22:37,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 19:22:37,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 19:22:37,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 642 out of 1216 [2023-08-25 19:22:37,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 269 transitions, 556 flow. Second operand has 2 states, 2 states have (on average 642.5) internal successors, (1285), 2 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:22:37,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:22:37,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 642 of 1216 [2023-08-25 19:22:37,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:22:41,283 INFO L124 PetriNetUnfolderBase]: 18550/55794 cut-off events. [2023-08-25 19:22:41,283 INFO L125 PetriNetUnfolderBase]: For 814/814 co-relation queries the response was YES. [2023-08-25 19:22:41,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80541 conditions, 55794 events. 18550/55794 cut-off events. For 814/814 co-relation queries the response was YES. Maximal size of possible extension queue 1336. Compared 720402 event pairs, 12477 based on Foata normal form. 4514/48338 useless extension candidates. Maximal degree in co-relation 75045. Up to 24207 conditions per place. [2023-08-25 19:22:41,724 INFO L140 encePairwiseOnDemand]: 1184/1216 looper letters, 72 selfloop transitions, 0 changer transitions 0/237 dead transitions. [2023-08-25 19:22:41,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 237 transitions, 636 flow [2023-08-25 19:22:41,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 19:22:41,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 19:22:41,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1388 transitions. [2023-08-25 19:22:41,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5707236842105263 [2023-08-25 19:22:41,741 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1388 transitions. [2023-08-25 19:22:41,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1388 transitions. [2023-08-25 19:22:41,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:22:41,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1388 transitions. [2023-08-25 19:22:41,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 694.0) internal successors, (1388), 2 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:22:41,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 1216.0) internal successors, (3648), 3 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:22:41,759 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 1216.0) internal successors, (3648), 3 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:22:41,760 INFO L175 Difference]: Start difference. First operand has 258 places, 269 transitions, 556 flow. Second operand 2 states and 1388 transitions. [2023-08-25 19:22:41,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 237 transitions, 636 flow [2023-08-25 19:22:41,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 237 transitions, 624 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-25 19:22:41,770 INFO L231 Difference]: Finished difference. Result has 224 places, 237 transitions, 480 flow [2023-08-25 19:22:41,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1216, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=480, PETRI_PLACES=224, PETRI_TRANSITIONS=237} [2023-08-25 19:22:41,774 INFO L281 CegarLoopForPetriNet]: 258 programPoint places, -34 predicate places. [2023-08-25 19:22:41,774 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 237 transitions, 480 flow [2023-08-25 19:22:41,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 642.5) internal successors, (1285), 2 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:22:41,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:22:41,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:22:41,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 19:22:41,775 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 137 more)] === [2023-08-25 19:22:41,776 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:22:41,776 INFO L85 PathProgramCache]: Analyzing trace with hash -770415305, now seen corresponding path program 1 times [2023-08-25 19:22:41,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:22:41,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091592053] [2023-08-25 19:22:41,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:22:41,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:22:41,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:22:41,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:22:41,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:22:41,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091592053] [2023-08-25 19:22:41,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091592053] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:22:41,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 19:22:41,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 19:22:41,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747010923] [2023-08-25 19:22:41,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:22:41,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 19:22:41,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:22:41,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 19:22:41,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 19:22:41,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 627 out of 1216 [2023-08-25 19:22:41,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 237 transitions, 480 flow. Second operand has 3 states, 3 states have (on average 629.3333333333334) internal successors, (1888), 3 states have internal predecessors, (1888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:22:41,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:22:41,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 627 of 1216 [2023-08-25 19:22:41,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:22:45,939 INFO L124 PetriNetUnfolderBase]: 25904/72958 cut-off events. [2023-08-25 19:22:45,939 INFO L125 PetriNetUnfolderBase]: For 224/224 co-relation queries the response was YES. [2023-08-25 19:22:46,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107228 conditions, 72958 events. 25904/72958 cut-off events. For 224/224 co-relation queries the response was YES. Maximal size of possible extension queue 1688. Compared 948626 event pairs, 13230 based on Foata normal form. 0/58899 useless extension candidates. Maximal degree in co-relation 107225. Up to 33971 conditions per place. [2023-08-25 19:22:46,359 INFO L140 encePairwiseOnDemand]: 1210/1216 looper letters, 103 selfloop transitions, 2 changer transitions 0/261 dead transitions. [2023-08-25 19:22:46,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 261 transitions, 740 flow [2023-08-25 19:22:46,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 19:22:46,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 19:22:46,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1990 transitions. [2023-08-25 19:22:46,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5455043859649122 [2023-08-25 19:22:46,364 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1990 transitions. [2023-08-25 19:22:46,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1990 transitions. [2023-08-25 19:22:46,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:22:46,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1990 transitions. [2023-08-25 19:22:46,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 663.3333333333334) internal successors, (1990), 3 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:22:46,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1216.0) internal successors, (4864), 4 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:22:46,376 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1216.0) internal successors, (4864), 4 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:22:46,376 INFO L175 Difference]: Start difference. First operand has 224 places, 237 transitions, 480 flow. Second operand 3 states and 1990 transitions. [2023-08-25 19:22:46,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 261 transitions, 740 flow [2023-08-25 19:22:46,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 261 transitions, 740 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 19:22:46,384 INFO L231 Difference]: Finished difference. Result has 223 places, 235 transitions, 486 flow [2023-08-25 19:22:46,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1216, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=486, PETRI_PLACES=223, PETRI_TRANSITIONS=235} [2023-08-25 19:22:46,385 INFO L281 CegarLoopForPetriNet]: 258 programPoint places, -35 predicate places. [2023-08-25 19:22:46,385 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 235 transitions, 486 flow [2023-08-25 19:22:46,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 629.3333333333334) internal successors, (1888), 3 states have internal predecessors, (1888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:22:46,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:22:46,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:22:46,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 19:22:46,386 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 137 more)] === [2023-08-25 19:22:46,387 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:22:46,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1634685351, now seen corresponding path program 1 times [2023-08-25 19:22:46,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:22:46,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155785089] [2023-08-25 19:22:46,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:22:46,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:22:46,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:22:46,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:22:46,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:22:46,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155785089] [2023-08-25 19:22:46,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155785089] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:22:46,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 19:22:46,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 19:22:46,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602200155] [2023-08-25 19:22:46,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:22:46,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 19:22:46,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:22:46,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 19:22:46,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 19:22:46,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 627 out of 1216 [2023-08-25 19:22:46,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 235 transitions, 486 flow. Second operand has 3 states, 3 states have (on average 629.6666666666666) internal successors, (1889), 3 states have internal predecessors, (1889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:22:46,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:22:46,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 627 of 1216 [2023-08-25 19:22:46,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:22:49,616 INFO L124 PetriNetUnfolderBase]: 24828/57240 cut-off events. [2023-08-25 19:22:49,617 INFO L125 PetriNetUnfolderBase]: For 1279/1279 co-relation queries the response was YES. [2023-08-25 19:22:49,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91200 conditions, 57240 events. 24828/57240 cut-off events. For 1279/1279 co-relation queries the response was YES. Maximal size of possible extension queue 1405. Compared 643800 event pairs, 5723 based on Foata normal form. 0/44765 useless extension candidates. Maximal degree in co-relation 91196. Up to 32296 conditions per place. [2023-08-25 19:22:49,924 INFO L140 encePairwiseOnDemand]: 1210/1216 looper letters, 103 selfloop transitions, 2 changer transitions 0/257 dead transitions. [2023-08-25 19:22:49,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 257 transitions, 752 flow [2023-08-25 19:22:49,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 19:22:49,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 19:22:49,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1986 transitions. [2023-08-25 19:22:49,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5444078947368421 [2023-08-25 19:22:49,928 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1986 transitions. [2023-08-25 19:22:49,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1986 transitions. [2023-08-25 19:22:49,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:22:49,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1986 transitions. [2023-08-25 19:22:49,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 662.0) internal successors, (1986), 3 states have internal predecessors, (1986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:22:49,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1216.0) internal successors, (4864), 4 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:22:49,937 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1216.0) internal successors, (4864), 4 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:22:49,938 INFO L175 Difference]: Start difference. First operand has 223 places, 235 transitions, 486 flow. Second operand 3 states and 1986 transitions. [2023-08-25 19:22:49,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 257 transitions, 752 flow [2023-08-25 19:22:49,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 257 transitions, 752 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 19:22:49,941 INFO L231 Difference]: Finished difference. Result has 222 places, 233 transitions, 492 flow [2023-08-25 19:22:49,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1216, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=492, PETRI_PLACES=222, PETRI_TRANSITIONS=233} [2023-08-25 19:22:49,942 INFO L281 CegarLoopForPetriNet]: 258 programPoint places, -36 predicate places. [2023-08-25 19:22:49,942 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 233 transitions, 492 flow [2023-08-25 19:22:49,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 629.6666666666666) internal successors, (1889), 3 states have internal predecessors, (1889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:22:49,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:22:49,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:22:49,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 19:22:49,943 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 137 more)] === [2023-08-25 19:22:49,944 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:22:49,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1026043297, now seen corresponding path program 1 times [2023-08-25 19:22:49,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:22:49,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8876459] [2023-08-25 19:22:49,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:22:49,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:22:49,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:22:49,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:22:49,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:22:49,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8876459] [2023-08-25 19:22:49,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8876459] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:22:49,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 19:22:49,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 19:22:49,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35058297] [2023-08-25 19:22:49,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:22:49,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 19:22:49,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:22:49,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 19:22:49,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 19:22:49,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 624 out of 1216 [2023-08-25 19:22:49,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 233 transitions, 492 flow. Second operand has 3 states, 3 states have (on average 627.0) internal successors, (1881), 3 states have internal predecessors, (1881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:22:49,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:22:49,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 624 of 1216 [2023-08-25 19:22:49,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:22:54,126 INFO L124 PetriNetUnfolderBase]: 25276/71575 cut-off events. [2023-08-25 19:22:54,127 INFO L125 PetriNetUnfolderBase]: For 1744/1744 co-relation queries the response was YES. [2023-08-25 19:22:54,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106773 conditions, 71575 events. 25276/71575 cut-off events. For 1744/1744 co-relation queries the response was YES. Maximal size of possible extension queue 1692. Compared 927669 event pairs, 17165 based on Foata normal form. 0/57686 useless extension candidates. Maximal degree in co-relation 106768. Up to 33314 conditions per place. [2023-08-25 19:22:54,541 INFO L140 encePairwiseOnDemand]: 1211/1216 looper letters, 78 selfloop transitions, 1 changer transitions 0/229 dead transitions. [2023-08-25 19:22:54,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 229 transitions, 642 flow [2023-08-25 19:22:54,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 19:22:54,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 19:22:54,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1952 transitions. [2023-08-25 19:22:54,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5350877192982456 [2023-08-25 19:22:54,545 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1952 transitions. [2023-08-25 19:22:54,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1952 transitions. [2023-08-25 19:22:54,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:22:54,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1952 transitions. [2023-08-25 19:22:54,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 650.6666666666666) internal successors, (1952), 3 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:22:54,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1216.0) internal successors, (4864), 4 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:22:54,556 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1216.0) internal successors, (4864), 4 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:22:54,556 INFO L175 Difference]: Start difference. First operand has 222 places, 233 transitions, 492 flow. Second operand 3 states and 1952 transitions. [2023-08-25 19:22:54,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 229 transitions, 642 flow [2023-08-25 19:22:54,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 229 transitions, 642 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 19:22:54,560 INFO L231 Difference]: Finished difference. Result has 220 places, 229 transitions, 486 flow [2023-08-25 19:22:54,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1216, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=486, PETRI_PLACES=220, PETRI_TRANSITIONS=229} [2023-08-25 19:22:54,561 INFO L281 CegarLoopForPetriNet]: 258 programPoint places, -38 predicate places. [2023-08-25 19:22:54,561 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 229 transitions, 486 flow [2023-08-25 19:22:54,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 627.0) internal successors, (1881), 3 states have internal predecessors, (1881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:22:54,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:22:54,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:22:54,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 19:22:54,562 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 137 more)] === [2023-08-25 19:22:54,563 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:22:54,563 INFO L85 PathProgramCache]: Analyzing trace with hash -918177038, now seen corresponding path program 1 times [2023-08-25 19:22:54,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:22:54,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470251106] [2023-08-25 19:22:54,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:22:54,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:22:54,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:22:54,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:22:54,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:22:54,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470251106] [2023-08-25 19:22:54,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470251106] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:22:54,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 19:22:54,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 19:22:54,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829071396] [2023-08-25 19:22:54,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:22:54,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 19:22:54,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:22:54,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 19:22:54,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 19:22:54,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 627 out of 1216 [2023-08-25 19:22:54,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 229 transitions, 486 flow. Second operand has 3 states, 3 states have (on average 630.3333333333334) internal successors, (1891), 3 states have internal predecessors, (1891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:22:54,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:22:54,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 627 of 1216 [2023-08-25 19:22:54,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:22:58,323 INFO L124 PetriNetUnfolderBase]: 25754/64053 cut-off events. [2023-08-25 19:22:58,323 INFO L125 PetriNetUnfolderBase]: For 1841/1841 co-relation queries the response was YES. [2023-08-25 19:22:58,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99923 conditions, 64053 events. 25754/64053 cut-off events. For 1841/1841 co-relation queries the response was YES. Maximal size of possible extension queue 1429. Compared 758685 event pairs, 6357 based on Foata normal form. 0/50933 useless extension candidates. Maximal degree in co-relation 99917. Up to 33472 conditions per place. [2023-08-25 19:22:58,691 INFO L140 encePairwiseOnDemand]: 1210/1216 looper letters, 106 selfloop transitions, 2 changer transitions 0/253 dead transitions. [2023-08-25 19:22:58,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 253 transitions, 767 flow [2023-08-25 19:22:58,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 19:22:58,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 19:22:58,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1987 transitions. [2023-08-25 19:22:58,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5446820175438597 [2023-08-25 19:22:58,695 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1987 transitions. [2023-08-25 19:22:58,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1987 transitions. [2023-08-25 19:22:58,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:22:58,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1987 transitions. [2023-08-25 19:22:58,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 662.3333333333334) internal successors, (1987), 3 states have internal predecessors, (1987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:22:58,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1216.0) internal successors, (4864), 4 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:22:58,704 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1216.0) internal successors, (4864), 4 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:22:58,704 INFO L175 Difference]: Start difference. First operand has 220 places, 229 transitions, 486 flow. Second operand 3 states and 1987 transitions. [2023-08-25 19:22:58,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 253 transitions, 767 flow [2023-08-25 19:22:58,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 253 transitions, 766 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 19:22:58,709 INFO L231 Difference]: Finished difference. Result has 218 places, 227 transitions, 491 flow [2023-08-25 19:22:58,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1216, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=491, PETRI_PLACES=218, PETRI_TRANSITIONS=227} [2023-08-25 19:22:58,710 INFO L281 CegarLoopForPetriNet]: 258 programPoint places, -40 predicate places. [2023-08-25 19:22:58,710 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 227 transitions, 491 flow [2023-08-25 19:22:58,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 630.3333333333334) internal successors, (1891), 3 states have internal predecessors, (1891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:22:58,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:22:58,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:22:58,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-25 19:22:58,711 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 137 more)] === [2023-08-25 19:22:58,711 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:22:58,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1814199824, now seen corresponding path program 1 times [2023-08-25 19:22:58,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:22:58,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566749323] [2023-08-25 19:22:58,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:22:58,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:22:58,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:22:58,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:22:58,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:22:58,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566749323] [2023-08-25 19:22:58,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566749323] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:22:58,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 19:22:58,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 19:22:58,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961027610] [2023-08-25 19:22:58,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:22:58,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 19:22:58,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:22:58,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 19:22:58,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 19:22:58,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 634 out of 1216 [2023-08-25 19:22:58,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 227 transitions, 491 flow. Second operand has 3 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) [2023-08-25 19:22:58,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:22:58,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 634 of 1216 [2023-08-25 19:22:58,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:23:02,820 INFO L124 PetriNetUnfolderBase]: 21617/62762 cut-off events. [2023-08-25 19:23:02,820 INFO L125 PetriNetUnfolderBase]: For 1523/1523 co-relation queries the response was YES. [2023-08-25 19:23:02,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93186 conditions, 62762 events. 21617/62762 cut-off events. For 1523/1523 co-relation queries the response was YES. Maximal size of possible extension queue 1444. Compared 803548 event pairs, 13150 based on Foata normal form. 0/50091 useless extension candidates. Maximal degree in co-relation 93180. Up to 26680 conditions per place. [2023-08-25 19:23:03,160 INFO L140 encePairwiseOnDemand]: 1213/1216 looper letters, 116 selfloop transitions, 2 changer transitions 0/270 dead transitions. [2023-08-25 19:23:03,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 270 transitions, 819 flow [2023-08-25 19:23:03,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 19:23:03,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 19:23:03,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2018 transitions. [2023-08-25 19:23:03,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5531798245614035 [2023-08-25 19:23:03,164 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2018 transitions. [2023-08-25 19:23:03,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2018 transitions. [2023-08-25 19:23:03,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:23:03,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2018 transitions. [2023-08-25 19:23:03,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 672.6666666666666) internal successors, (2018), 3 states have internal predecessors, (2018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:23:03,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1216.0) internal successors, (4864), 4 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:23:03,171 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1216.0) internal successors, (4864), 4 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:23:03,171 INFO L175 Difference]: Start difference. First operand has 218 places, 227 transitions, 491 flow. Second operand 3 states and 2018 transitions. [2023-08-25 19:23:03,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 270 transitions, 819 flow [2023-08-25 19:23:03,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 270 transitions, 819 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 19:23:03,176 INFO L231 Difference]: Finished difference. Result has 221 places, 228 transitions, 503 flow [2023-08-25 19:23:03,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1216, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=503, PETRI_PLACES=221, PETRI_TRANSITIONS=228} [2023-08-25 19:23:03,177 INFO L281 CegarLoopForPetriNet]: 258 programPoint places, -37 predicate places. [2023-08-25 19:23:03,177 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 228 transitions, 503 flow [2023-08-25 19:23:03,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-08-25 19:23:03,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:23:03,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:23:03,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-25 19:23:03,178 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 137 more)] === [2023-08-25 19:23:03,178 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:23:03,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1814216452, now seen corresponding path program 1 times [2023-08-25 19:23:03,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:23:03,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693825517] [2023-08-25 19:23:03,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:23:03,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:23:03,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:23:03,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:23:03,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:23:03,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693825517] [2023-08-25 19:23:03,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693825517] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:23:03,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 19:23:03,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 19:23:03,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021222115] [2023-08-25 19:23:03,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:23:03,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 19:23:03,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:23:03,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 19:23:03,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 19:23:03,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 624 out of 1216 [2023-08-25 19:23:03,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 228 transitions, 503 flow. Second operand has 3 states, 3 states have (on average 627.3333333333334) internal successors, (1882), 3 states have internal predecessors, (1882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:23:03,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:23:03,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 624 of 1216 [2023-08-25 19:23:03,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:23:07,894 INFO L124 PetriNetUnfolderBase]: 26893/74762 cut-off events. [2023-08-25 19:23:07,894 INFO L125 PetriNetUnfolderBase]: For 4286/4286 co-relation queries the response was YES. [2023-08-25 19:23:08,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115110 conditions, 74762 events. 26893/74762 cut-off events. For 4286/4286 co-relation queries the response was YES. Maximal size of possible extension queue 1760. Compared 961405 event pairs, 18215 based on Foata normal form. 0/60756 useless extension candidates. Maximal degree in co-relation 115102. Up to 35600 conditions per place. [2023-08-25 19:23:08,310 INFO L140 encePairwiseOnDemand]: 1211/1216 looper letters, 79 selfloop transitions, 1 changer transitions 0/224 dead transitions. [2023-08-25 19:23:08,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 224 transitions, 655 flow [2023-08-25 19:23:08,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 19:23:08,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 19:23:08,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1952 transitions. [2023-08-25 19:23:08,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5350877192982456 [2023-08-25 19:23:08,313 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1952 transitions. [2023-08-25 19:23:08,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1952 transitions. [2023-08-25 19:23:08,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:23:08,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1952 transitions. [2023-08-25 19:23:08,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 650.6666666666666) internal successors, (1952), 3 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:23:08,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1216.0) internal successors, (4864), 4 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:23:08,319 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1216.0) internal successors, (4864), 4 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:23:08,320 INFO L175 Difference]: Start difference. First operand has 221 places, 228 transitions, 503 flow. Second operand 3 states and 1952 transitions. [2023-08-25 19:23:08,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 224 transitions, 655 flow [2023-08-25 19:23:08,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 224 transitions, 653 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 19:23:08,326 INFO L231 Difference]: Finished difference. Result has 218 places, 224 transitions, 495 flow [2023-08-25 19:23:08,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1216, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=495, PETRI_PLACES=218, PETRI_TRANSITIONS=224} [2023-08-25 19:23:08,326 INFO L281 CegarLoopForPetriNet]: 258 programPoint places, -40 predicate places. [2023-08-25 19:23:08,326 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 224 transitions, 495 flow [2023-08-25 19:23:08,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 627.3333333333334) internal successors, (1882), 3 states have internal predecessors, (1882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:23:08,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:23:08,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:23:08,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-25 19:23:08,327 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 137 more)] === [2023-08-25 19:23:08,327 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:23:08,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1358228025, now seen corresponding path program 1 times [2023-08-25 19:23:08,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:23:08,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590827314] [2023-08-25 19:23:08,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:23:08,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:23:08,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:23:08,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:23:08,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:23:08,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590827314] [2023-08-25 19:23:08,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590827314] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:23:08,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 19:23:08,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 19:23:08,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650905771] [2023-08-25 19:23:08,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:23:08,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 19:23:08,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:23:08,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 19:23:08,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 19:23:08,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 528 out of 1216 [2023-08-25 19:23:08,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 224 transitions, 495 flow. Second operand has 6 states, 6 states have (on average 530.3333333333334) internal successors, (3182), 6 states have internal predecessors, (3182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:23:08,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:23:08,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 528 of 1216 [2023-08-25 19:23:08,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand