/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/weaver/popl20-figure1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 06:06:27,647 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 06:06:27,701 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 06:06:27,705 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 06:06:27,705 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 06:06:27,719 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 06:06:27,720 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 06:06:27,720 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 06:06:27,721 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 06:06:27,721 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 06:06:27,721 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 06:06:27,722 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 06:06:27,722 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 06:06:27,722 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 06:06:27,722 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 06:06:27,722 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 06:06:27,723 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 06:06:27,723 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 06:06:27,723 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 06:06:27,723 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 06:06:27,723 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 06:06:27,724 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 06:06:27,724 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 06:06:27,724 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 06:06:27,724 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 06:06:27,725 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 06:06:27,725 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 06:06:27,725 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 06:06:27,725 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 06:06:27,725 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 06:06:27,726 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 06:06:27,726 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 06:06:27,726 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 06:06:27,726 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 06:06:27,726 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 06:06:27,726 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 06:06:28,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 06:06:28,180 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 06:06:28,182 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 06:06:28,183 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 06:06:28,183 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 06:06:28,185 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-figure1.wvr.c [2023-08-25 06:06:29,215 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 06:06:29,373 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 06:06:29,374 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-figure1.wvr.c [2023-08-25 06:06:29,379 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/898cc6c47/94e1057b74644f7ba3d5650ccc2c6f93/FLAGcb265c045 [2023-08-25 06:06:29,393 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/898cc6c47/94e1057b74644f7ba3d5650ccc2c6f93 [2023-08-25 06:06:29,397 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 06:06:29,398 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 06:06:29,399 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 06:06:29,399 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 06:06:29,401 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 06:06:29,403 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 06:06:29" (1/1) ... [2023-08-25 06:06:29,404 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22823476 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:06:29, skipping insertion in model container [2023-08-25 06:06:29,404 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 06:06:29" (1/1) ... [2023-08-25 06:06:29,421 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 06:06:29,569 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 06:06:29,577 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 06:06:29,605 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 06:06:29,612 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 06:06:29,612 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 06:06:29,618 INFO L206 MainTranslator]: Completed translation [2023-08-25 06:06:29,620 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:06:29 WrapperNode [2023-08-25 06:06:29,620 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 06:06:29,621 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 06:06:29,621 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 06:06:29,621 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 06:06:29,626 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:06:29" (1/1) ... [2023-08-25 06:06:29,640 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:06:29" (1/1) ... [2023-08-25 06:06:29,664 INFO L138 Inliner]: procedures = 21, calls = 25, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 98 [2023-08-25 06:06:29,665 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 06:06:29,665 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 06:06:29,665 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 06:06:29,665 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 06:06:29,672 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:06:29" (1/1) ... [2023-08-25 06:06:29,672 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:06:29" (1/1) ... [2023-08-25 06:06:29,677 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:06:29" (1/1) ... [2023-08-25 06:06:29,678 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:06:29" (1/1) ... [2023-08-25 06:06:29,693 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:06:29" (1/1) ... [2023-08-25 06:06:29,695 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:06:29" (1/1) ... [2023-08-25 06:06:29,700 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:06:29" (1/1) ... [2023-08-25 06:06:29,701 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:06:29" (1/1) ... [2023-08-25 06:06:29,704 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 06:06:29,705 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 06:06:29,705 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 06:06:29,706 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 06:06:29,706 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:06:29" (1/1) ... [2023-08-25 06:06:29,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 06:06:29,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:06:29,731 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 06:06:29,733 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 06:06:29,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 06:06:29,784 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-25 06:06:29,784 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-25 06:06:29,784 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-25 06:06:29,784 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-25 06:06:29,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 06:06:29,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 06:06:29,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 06:06:29,785 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-25 06:06:29,785 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-25 06:06:29,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 06:06:29,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 06:06:29,785 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 06:06:29,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 06:06:29,786 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 06:06:29,855 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 06:06:29,857 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 06:06:30,020 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 06:06:30,068 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 06:06:30,068 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-25 06:06:30,070 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 06:06:30 BoogieIcfgContainer [2023-08-25 06:06:30,070 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 06:06:30,072 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 06:06:30,072 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 06:06:30,074 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 06:06:30,074 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 06:06:29" (1/3) ... [2023-08-25 06:06:30,075 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c8b574 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 06:06:30, skipping insertion in model container [2023-08-25 06:06:30,075 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:06:29" (2/3) ... [2023-08-25 06:06:30,075 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c8b574 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 06:06:30, skipping insertion in model container [2023-08-25 06:06:30,075 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 06:06:30" (3/3) ... [2023-08-25 06:06:30,076 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-figure1.wvr.c [2023-08-25 06:06:30,089 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 06:06:30,089 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-08-25 06:06:30,089 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 06:06:30,152 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-25 06:06:30,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 107 transitions, 230 flow [2023-08-25 06:06:30,219 INFO L124 PetriNetUnfolderBase]: 5/105 cut-off events. [2023-08-25 06:06:30,219 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 06:06:30,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 105 events. 5/105 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 108 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-08-25 06:06:30,228 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 107 transitions, 230 flow [2023-08-25 06:06:30,231 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 96 transitions, 204 flow [2023-08-25 06:06:30,234 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 06:06:30,244 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 96 transitions, 204 flow [2023-08-25 06:06:30,250 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 98 places, 96 transitions, 204 flow [2023-08-25 06:06:30,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 96 transitions, 204 flow [2023-08-25 06:06:30,291 INFO L124 PetriNetUnfolderBase]: 5/96 cut-off events. [2023-08-25 06:06:30,291 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 06:06:30,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 96 events. 5/96 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 107 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-08-25 06:06:30,294 INFO L119 LiptonReduction]: Number of co-enabled transitions 1636 [2023-08-25 06:06:32,327 INFO L134 LiptonReduction]: Checked pairs total: 3843 [2023-08-25 06:06:32,328 INFO L136 LiptonReduction]: Total number of compositions: 95 [2023-08-25 06:06:32,338 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 06:06:32,342 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;@73cd0179, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 06:06:32,342 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-08-25 06:06:32,344 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 06:06:32,344 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-08-25 06:06:32,344 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 06:06:32,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:06:32,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-25 06:06:32,345 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 06:06:32,348 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:06:32,348 INFO L85 PathProgramCache]: Analyzing trace with hash 459, now seen corresponding path program 1 times [2023-08-25 06:06:32,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:06:32,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731989230] [2023-08-25 06:06:32,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:32,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:06:32,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:32,426 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 06:06:32,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:06:32,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731989230] [2023-08-25 06:06:32,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731989230] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 06:06:32,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 06:06:32,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-25 06:06:32,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089666162] [2023-08-25 06:06:32,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 06:06:32,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 06:06:32,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:06:32,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 06:06:32,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 06:06:32,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 202 [2023-08-25 06:06:32,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 32 transitions, 76 flow. Second operand has 2 states, 2 states have (on average 92.5) internal successors, (185), 2 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:32,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:06:32,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 202 [2023-08-25 06:06:32,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:06:32,491 INFO L124 PetriNetUnfolderBase]: 44/101 cut-off events. [2023-08-25 06:06:32,491 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-25 06:06:32,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 101 events. 44/101 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 361 event pairs, 18 based on Foata normal form. 25/102 useless extension candidates. Maximal degree in co-relation 144. Up to 74 conditions per place. [2023-08-25 06:06:32,493 INFO L140 encePairwiseOnDemand]: 191/202 looper letters, 13 selfloop transitions, 0 changer transitions 0/21 dead transitions. [2023-08-25 06:06:32,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 21 transitions, 80 flow [2023-08-25 06:06:32,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 06:06:32,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 06:06:32,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 208 transitions. [2023-08-25 06:06:32,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148514851485149 [2023-08-25 06:06:32,502 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 208 transitions. [2023-08-25 06:06:32,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 208 transitions. [2023-08-25 06:06:32,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:06:32,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 208 transitions. [2023-08-25 06:06:32,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 104.0) internal successors, (208), 2 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:32,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:32,509 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:32,511 INFO L175 Difference]: Start difference. First operand has 35 places, 32 transitions, 76 flow. Second operand 2 states and 208 transitions. [2023-08-25 06:06:32,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 21 transitions, 80 flow [2023-08-25 06:06:32,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 21 transitions, 72 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 06:06:32,515 INFO L231 Difference]: Finished difference. Result has 23 places, 21 transitions, 46 flow [2023-08-25 06:06:32,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=46, PETRI_PLACES=23, PETRI_TRANSITIONS=21} [2023-08-25 06:06:32,519 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -12 predicate places. [2023-08-25 06:06:32,519 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 21 transitions, 46 flow [2023-08-25 06:06:32,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 92.5) internal successors, (185), 2 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:32,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:06:32,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-25 06:06:32,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 06:06:32,519 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 06:06:32,520 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:06:32,520 INFO L85 PathProgramCache]: Analyzing trace with hash 434944684, now seen corresponding path program 1 times [2023-08-25 06:06:32,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:06:32,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624783789] [2023-08-25 06:06:32,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:32,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:06:32,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:32,574 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 06:06:32,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:06:32,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624783789] [2023-08-25 06:06:32,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624783789] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 06:06:32,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 06:06:32,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 06:06:32,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939291484] [2023-08-25 06:06:32,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 06:06:32,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 06:06:32,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:06:32,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 06:06:32,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 06:06:32,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 202 [2023-08-25 06:06:32,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 21 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:32,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:06:32,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 202 [2023-08-25 06:06:32,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:06:32,612 INFO L124 PetriNetUnfolderBase]: 96/171 cut-off events. [2023-08-25 06:06:32,613 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-25 06:06:32,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 171 events. 96/171 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 496 event pairs, 32 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 346. Up to 164 conditions per place. [2023-08-25 06:06:32,614 INFO L140 encePairwiseOnDemand]: 198/202 looper letters, 20 selfloop transitions, 2 changer transitions 0/24 dead transitions. [2023-08-25 06:06:32,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 24 transitions, 97 flow [2023-08-25 06:06:32,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 06:06:32,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 06:06:32,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 273 transitions. [2023-08-25 06:06:32,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4504950495049505 [2023-08-25 06:06:32,629 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 273 transitions. [2023-08-25 06:06:32,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 273 transitions. [2023-08-25 06:06:32,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:06:32,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 273 transitions. [2023-08-25 06:06:32,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:32,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:32,632 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:32,632 INFO L175 Difference]: Start difference. First operand has 23 places, 21 transitions, 46 flow. Second operand 3 states and 273 transitions. [2023-08-25 06:06:32,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 24 transitions, 97 flow [2023-08-25 06:06:32,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 24 transitions, 97 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 06:06:32,633 INFO L231 Difference]: Finished difference. Result has 24 places, 21 transitions, 56 flow [2023-08-25 06:06:32,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=24, PETRI_TRANSITIONS=21} [2023-08-25 06:06:32,634 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -11 predicate places. [2023-08-25 06:06:32,634 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 21 transitions, 56 flow [2023-08-25 06:06:32,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:32,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:06:32,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:06:32,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 06:06:32,635 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 06:06:32,635 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:06:32,635 INFO L85 PathProgramCache]: Analyzing trace with hash 314622083, now seen corresponding path program 1 times [2023-08-25 06:06:32,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:06:32,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292907209] [2023-08-25 06:06:32,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:32,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:06:32,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:32,881 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 06:06:32,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:06:32,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292907209] [2023-08-25 06:06:32,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292907209] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 06:06:32,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 06:06:32,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-25 06:06:32,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211367136] [2023-08-25 06:06:32,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 06:06:32,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 06:06:32,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:06:32,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 06:06:32,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 06:06:32,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 202 [2023-08-25 06:06:32,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 21 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:32,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:06:32,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 202 [2023-08-25 06:06:32,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:06:32,938 INFO L124 PetriNetUnfolderBase]: 52/129 cut-off events. [2023-08-25 06:06:32,938 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 06:06:32,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 129 events. 52/129 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 513 event pairs, 16 based on Foata normal form. 5/119 useless extension candidates. Maximal degree in co-relation 248. Up to 62 conditions per place. [2023-08-25 06:06:32,943 INFO L140 encePairwiseOnDemand]: 198/202 looper letters, 16 selfloop transitions, 2 changer transitions 4/30 dead transitions. [2023-08-25 06:06:32,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 30 transitions, 121 flow [2023-08-25 06:06:32,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 06:06:32,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 06:06:32,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 294 transitions. [2023-08-25 06:06:32,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48514851485148514 [2023-08-25 06:06:32,946 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 294 transitions. [2023-08-25 06:06:32,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 294 transitions. [2023-08-25 06:06:32,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:06:32,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 294 transitions. [2023-08-25 06:06:32,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:32,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:32,950 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:32,950 INFO L175 Difference]: Start difference. First operand has 24 places, 21 transitions, 56 flow. Second operand 3 states and 294 transitions. [2023-08-25 06:06:32,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 30 transitions, 121 flow [2023-08-25 06:06:32,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 30 transitions, 121 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 06:06:32,952 INFO L231 Difference]: Finished difference. Result has 27 places, 22 transitions, 70 flow [2023-08-25 06:06:32,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=27, PETRI_TRANSITIONS=22} [2023-08-25 06:06:32,953 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -8 predicate places. [2023-08-25 06:06:32,953 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 22 transitions, 70 flow [2023-08-25 06:06:32,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:32,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:06:32,954 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:06:32,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 06:06:32,957 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 06:06:32,958 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:06:32,958 INFO L85 PathProgramCache]: Analyzing trace with hash 868290545, now seen corresponding path program 1 times [2023-08-25 06:06:32,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:06:32,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738670581] [2023-08-25 06:06:32,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:32,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:06:32,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:33,076 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:33,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:06:33,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738670581] [2023-08-25 06:06:33,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738670581] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 06:06:33,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 06:06:33,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 06:06:33,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455728781] [2023-08-25 06:06:33,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 06:06:33,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 06:06:33,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:06:33,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 06:06:33,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-25 06:06:33,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-25 06:06:33,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 22 transitions, 70 flow. Second operand has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:33,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:06:33,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-25 06:06:33,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:06:33,156 INFO L124 PetriNetUnfolderBase]: 80/189 cut-off events. [2023-08-25 06:06:33,156 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-08-25 06:06:33,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 419 conditions, 189 events. 80/189 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 805 event pairs, 30 based on Foata normal form. 2/178 useless extension candidates. Maximal degree in co-relation 413. Up to 117 conditions per place. [2023-08-25 06:06:33,158 INFO L140 encePairwiseOnDemand]: 197/202 looper letters, 20 selfloop transitions, 5 changer transitions 3/34 dead transitions. [2023-08-25 06:06:33,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 34 transitions, 154 flow [2023-08-25 06:06:33,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 06:06:33,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 06:06:33,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 419 transitions. [2023-08-25 06:06:33,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41485148514851483 [2023-08-25 06:06:33,159 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 419 transitions. [2023-08-25 06:06:33,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 419 transitions. [2023-08-25 06:06:33,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:06:33,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 419 transitions. [2023-08-25 06:06:33,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:33,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 202.0) internal successors, (1212), 6 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:33,163 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 202.0) internal successors, (1212), 6 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:33,163 INFO L175 Difference]: Start difference. First operand has 27 places, 22 transitions, 70 flow. Second operand 5 states and 419 transitions. [2023-08-25 06:06:33,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 34 transitions, 154 flow [2023-08-25 06:06:33,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 34 transitions, 151 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 06:06:33,164 INFO L231 Difference]: Finished difference. Result has 33 places, 25 transitions, 103 flow [2023-08-25 06:06:33,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=103, PETRI_PLACES=33, PETRI_TRANSITIONS=25} [2023-08-25 06:06:33,165 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -2 predicate places. [2023-08-25 06:06:33,165 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 25 transitions, 103 flow [2023-08-25 06:06:33,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:33,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:06:33,165 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:06:33,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 06:06:33,166 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 06:06:33,166 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:06:33,166 INFO L85 PathProgramCache]: Analyzing trace with hash -510214987, now seen corresponding path program 2 times [2023-08-25 06:06:33,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:06:33,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165679648] [2023-08-25 06:06:33,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:33,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:06:33,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:33,221 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:33,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:06:33,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165679648] [2023-08-25 06:06:33,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165679648] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 06:06:33,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 06:06:33,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 06:06:33,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569275109] [2023-08-25 06:06:33,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 06:06:33,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 06:06:33,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:06:33,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 06:06:33,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-25 06:06:33,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-25 06:06:33,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 25 transitions, 103 flow. Second operand has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:33,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:06:33,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-25 06:06:33,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:06:33,289 INFO L124 PetriNetUnfolderBase]: 81/195 cut-off events. [2023-08-25 06:06:33,289 INFO L125 PetriNetUnfolderBase]: For 202/208 co-relation queries the response was YES. [2023-08-25 06:06:33,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 538 conditions, 195 events. 81/195 cut-off events. For 202/208 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 803 event pairs, 29 based on Foata normal form. 4/185 useless extension candidates. Maximal degree in co-relation 529. Up to 100 conditions per place. [2023-08-25 06:06:33,291 INFO L140 encePairwiseOnDemand]: 197/202 looper letters, 23 selfloop transitions, 8 changer transitions 0/37 dead transitions. [2023-08-25 06:06:33,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 37 transitions, 212 flow [2023-08-25 06:06:33,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 06:06:33,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 06:06:33,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 418 transitions. [2023-08-25 06:06:33,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41386138613861384 [2023-08-25 06:06:33,293 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 418 transitions. [2023-08-25 06:06:33,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 418 transitions. [2023-08-25 06:06:33,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:06:33,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 418 transitions. [2023-08-25 06:06:33,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 83.6) internal successors, (418), 5 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:33,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 202.0) internal successors, (1212), 6 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:33,296 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 202.0) internal successors, (1212), 6 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:33,296 INFO L175 Difference]: Start difference. First operand has 33 places, 25 transitions, 103 flow. Second operand 5 states and 418 transitions. [2023-08-25 06:06:33,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 37 transitions, 212 flow [2023-08-25 06:06:33,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 37 transitions, 201 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-25 06:06:33,299 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 153 flow [2023-08-25 06:06:33,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=153, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2023-08-25 06:06:33,299 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2023-08-25 06:06:33,300 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 153 flow [2023-08-25 06:06:33,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:33,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:06:33,300 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:06:33,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-25 06:06:33,300 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 06:06:33,301 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:06:33,301 INFO L85 PathProgramCache]: Analyzing trace with hash 42251967, now seen corresponding path program 3 times [2023-08-25 06:06:33,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:06:33,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408502554] [2023-08-25 06:06:33,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:33,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:06:33,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:33,375 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:33,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:06:33,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408502554] [2023-08-25 06:06:33,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408502554] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 06:06:33,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 06:06:33,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 06:06:33,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754235819] [2023-08-25 06:06:33,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 06:06:33,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 06:06:33,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:06:33,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 06:06:33,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-25 06:06:33,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-25 06:06:33,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 153 flow. Second operand has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:33,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:06:33,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-25 06:06:33,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:06:33,454 INFO L124 PetriNetUnfolderBase]: 92/229 cut-off events. [2023-08-25 06:06:33,454 INFO L125 PetriNetUnfolderBase]: For 369/375 co-relation queries the response was YES. [2023-08-25 06:06:33,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 713 conditions, 229 events. 92/229 cut-off events. For 369/375 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1048 event pairs, 16 based on Foata normal form. 8/228 useless extension candidates. Maximal degree in co-relation 701. Up to 92 conditions per place. [2023-08-25 06:06:33,456 INFO L140 encePairwiseOnDemand]: 197/202 looper letters, 31 selfloop transitions, 7 changer transitions 0/44 dead transitions. [2023-08-25 06:06:33,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 44 transitions, 283 flow [2023-08-25 06:06:33,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 06:06:33,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 06:06:33,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 423 transitions. [2023-08-25 06:06:33,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4188118811881188 [2023-08-25 06:06:33,459 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 423 transitions. [2023-08-25 06:06:33,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 423 transitions. [2023-08-25 06:06:33,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:06:33,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 423 transitions. [2023-08-25 06:06:33,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 84.6) internal successors, (423), 5 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:33,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 202.0) internal successors, (1212), 6 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:33,463 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 202.0) internal successors, (1212), 6 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:33,463 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 153 flow. Second operand 5 states and 423 transitions. [2023-08-25 06:06:33,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 44 transitions, 283 flow [2023-08-25 06:06:33,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 44 transitions, 281 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-25 06:06:33,469 INFO L231 Difference]: Finished difference. Result has 44 places, 32 transitions, 192 flow [2023-08-25 06:06:33,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=192, PETRI_PLACES=44, PETRI_TRANSITIONS=32} [2023-08-25 06:06:33,472 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 9 predicate places. [2023-08-25 06:06:33,473 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 32 transitions, 192 flow [2023-08-25 06:06:33,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:33,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:06:33,473 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:06:33,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-25 06:06:33,474 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 06:06:33,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:06:33,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1852070679, now seen corresponding path program 4 times [2023-08-25 06:06:33,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:06:33,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591886539] [2023-08-25 06:06:33,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:33,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:06:33,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:33,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:33,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:06:33,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591886539] [2023-08-25 06:06:33,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591886539] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:06:33,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774533766] [2023-08-25 06:06:33,547 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 06:06:33,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:33,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:06:33,581 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:06:33,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-25 06:06:33,643 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 06:06:33,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:06:33,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-25 06:06:33,649 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:06:33,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:33,723 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:06:33,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:33,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774533766] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:06:33,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:06:33,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-25 06:06:33,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296616948] [2023-08-25 06:06:33,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:06:33,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-25 06:06:33,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:06:33,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-25 06:06:33,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-25 06:06:33,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-25 06:06:33,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 32 transitions, 192 flow. Second operand has 10 states, 10 states have (on average 80.1) internal successors, (801), 10 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:33,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:06:33,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-25 06:06:33,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:06:33,963 INFO L124 PetriNetUnfolderBase]: 117/286 cut-off events. [2023-08-25 06:06:33,963 INFO L125 PetriNetUnfolderBase]: For 782/797 co-relation queries the response was YES. [2023-08-25 06:06:33,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 966 conditions, 286 events. 117/286 cut-off events. For 782/797 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1370 event pairs, 21 based on Foata normal form. 22/299 useless extension candidates. Maximal degree in co-relation 951. Up to 77 conditions per place. [2023-08-25 06:06:33,966 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 40 selfloop transitions, 18 changer transitions 0/64 dead transitions. [2023-08-25 06:06:33,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 64 transitions, 472 flow [2023-08-25 06:06:33,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-25 06:06:33,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-25 06:06:33,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 832 transitions. [2023-08-25 06:06:33,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41188118811881186 [2023-08-25 06:06:33,969 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 832 transitions. [2023-08-25 06:06:33,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 832 transitions. [2023-08-25 06:06:33,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:06:33,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 832 transitions. [2023-08-25 06:06:33,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 83.2) internal successors, (832), 10 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:33,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 202.0) internal successors, (2222), 11 states have internal predecessors, (2222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:33,974 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 202.0) internal successors, (2222), 11 states have internal predecessors, (2222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:33,974 INFO L175 Difference]: Start difference. First operand has 44 places, 32 transitions, 192 flow. Second operand 10 states and 832 transitions. [2023-08-25 06:06:33,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 64 transitions, 472 flow [2023-08-25 06:06:33,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 64 transitions, 465 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 06:06:33,977 INFO L231 Difference]: Finished difference. Result has 55 places, 42 transitions, 341 flow [2023-08-25 06:06:33,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=341, PETRI_PLACES=55, PETRI_TRANSITIONS=42} [2023-08-25 06:06:33,978 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 20 predicate places. [2023-08-25 06:06:33,978 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 42 transitions, 341 flow [2023-08-25 06:06:33,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 80.1) internal successors, (801), 10 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:33,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:06:33,978 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:06:33,986 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-25 06:06:34,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:34,179 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 06:06:34,180 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:06:34,180 INFO L85 PathProgramCache]: Analyzing trace with hash -143276021, now seen corresponding path program 5 times [2023-08-25 06:06:34,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:06:34,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943806269] [2023-08-25 06:06:34,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:34,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:06:34,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:34,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:34,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:06:34,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943806269] [2023-08-25 06:06:34,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943806269] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 06:06:34,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 06:06:34,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 06:06:34,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844883329] [2023-08-25 06:06:34,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 06:06:34,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 06:06:34,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:06:34,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 06:06:34,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-25 06:06:34,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-25 06:06:34,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 42 transitions, 341 flow. Second operand has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:34,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:06:34,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-25 06:06:34,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:06:34,326 INFO L124 PetriNetUnfolderBase]: 115/290 cut-off events. [2023-08-25 06:06:34,326 INFO L125 PetriNetUnfolderBase]: For 1277/1305 co-relation queries the response was YES. [2023-08-25 06:06:34,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1132 conditions, 290 events. 115/290 cut-off events. For 1277/1305 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1406 event pairs, 29 based on Foata normal form. 12/287 useless extension candidates. Maximal degree in co-relation 1113. Up to 97 conditions per place. [2023-08-25 06:06:34,329 INFO L140 encePairwiseOnDemand]: 197/202 looper letters, 34 selfloop transitions, 14 changer transitions 2/56 dead transitions. [2023-08-25 06:06:34,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 56 transitions, 504 flow [2023-08-25 06:06:34,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 06:06:34,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 06:06:34,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 423 transitions. [2023-08-25 06:06:34,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4188118811881188 [2023-08-25 06:06:34,331 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 423 transitions. [2023-08-25 06:06:34,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 423 transitions. [2023-08-25 06:06:34,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:06:34,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 423 transitions. [2023-08-25 06:06:34,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 84.6) internal successors, (423), 5 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:34,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 202.0) internal successors, (1212), 6 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:34,334 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 202.0) internal successors, (1212), 6 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:34,334 INFO L175 Difference]: Start difference. First operand has 55 places, 42 transitions, 341 flow. Second operand 5 states and 423 transitions. [2023-08-25 06:06:34,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 56 transitions, 504 flow [2023-08-25 06:06:34,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 56 transitions, 449 flow, removed 22 selfloop flow, removed 3 redundant places. [2023-08-25 06:06:34,338 INFO L231 Difference]: Finished difference. Result has 58 places, 42 transitions, 330 flow [2023-08-25 06:06:34,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=330, PETRI_PLACES=58, PETRI_TRANSITIONS=42} [2023-08-25 06:06:34,340 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 23 predicate places. [2023-08-25 06:06:34,341 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 42 transitions, 330 flow [2023-08-25 06:06:34,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:34,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:06:34,341 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:06:34,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-25 06:06:34,341 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 06:06:34,342 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:06:34,342 INFO L85 PathProgramCache]: Analyzing trace with hash -2016078259, now seen corresponding path program 6 times [2023-08-25 06:06:34,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:06:34,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405442528] [2023-08-25 06:06:34,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:34,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:06:34,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:34,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:34,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:06:34,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405442528] [2023-08-25 06:06:34,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405442528] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:06:34,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941361218] [2023-08-25 06:06:34,398 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 06:06:34,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:34,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:06:34,400 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:06:34,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-25 06:06:34,494 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-25 06:06:34,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:06:34,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-25 06:06:34,496 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:06:34,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:34,544 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:06:34,571 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:34,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941361218] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:06:34,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:06:34,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-25 06:06:34,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598781587] [2023-08-25 06:06:34,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:06:34,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-25 06:06:34,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:06:34,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-25 06:06:34,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-25 06:06:34,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-25 06:06:34,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 42 transitions, 330 flow. Second operand has 10 states, 10 states have (on average 80.7) internal successors, (807), 10 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:34,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:06:34,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-25 06:06:34,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:06:34,669 INFO L124 PetriNetUnfolderBase]: 105/264 cut-off events. [2023-08-25 06:06:34,670 INFO L125 PetriNetUnfolderBase]: For 1321/1349 co-relation queries the response was YES. [2023-08-25 06:06:34,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 986 conditions, 264 events. 105/264 cut-off events. For 1321/1349 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1240 event pairs, 34 based on Foata normal form. 22/273 useless extension candidates. Maximal degree in co-relation 965. Up to 112 conditions per place. [2023-08-25 06:06:34,672 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 30 selfloop transitions, 17 changer transitions 1/54 dead transitions. [2023-08-25 06:06:34,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 54 transitions, 478 flow [2023-08-25 06:06:34,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 06:06:34,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 06:06:34,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 504 transitions. [2023-08-25 06:06:34,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4158415841584158 [2023-08-25 06:06:34,674 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 504 transitions. [2023-08-25 06:06:34,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 504 transitions. [2023-08-25 06:06:34,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:06:34,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 504 transitions. [2023-08-25 06:06:34,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 84.0) internal successors, (504), 6 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:34,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 202.0) internal successors, (1414), 7 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:34,676 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 202.0) internal successors, (1414), 7 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:34,676 INFO L175 Difference]: Start difference. First operand has 58 places, 42 transitions, 330 flow. Second operand 6 states and 504 transitions. [2023-08-25 06:06:34,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 54 transitions, 478 flow [2023-08-25 06:06:34,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 54 transitions, 447 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-25 06:06:34,680 INFO L231 Difference]: Finished difference. Result has 60 places, 43 transitions, 345 flow [2023-08-25 06:06:34,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=345, PETRI_PLACES=60, PETRI_TRANSITIONS=43} [2023-08-25 06:06:34,680 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 25 predicate places. [2023-08-25 06:06:34,680 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 43 transitions, 345 flow [2023-08-25 06:06:34,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 80.7) internal successors, (807), 10 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:34,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:06:34,681 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:06:34,701 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-25 06:06:34,887 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,SelfDestructingSolverStorable8 [2023-08-25 06:06:34,887 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 06:06:34,887 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:06:34,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1334733930, now seen corresponding path program 1 times [2023-08-25 06:06:34,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:06:34,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631385338] [2023-08-25 06:06:34,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:34,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:06:34,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:34,990 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 06:06:34,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:06:34,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631385338] [2023-08-25 06:06:34,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631385338] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:06:34,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648258824] [2023-08-25 06:06:34,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:34,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:34,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:06:34,992 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:06:34,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-25 06:06:35,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:35,054 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-25 06:06:35,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:06:35,091 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 06:06:35,091 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:06:35,131 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 06:06:35,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648258824] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:06:35,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:06:35,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2023-08-25 06:06:35,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540920826] [2023-08-25 06:06:35,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:06:35,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 06:06:35,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:06:35,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 06:06:35,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 06:06:35,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 202 [2023-08-25 06:06:35,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 43 transitions, 345 flow. Second operand has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:35,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:06:35,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 202 [2023-08-25 06:06:35,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:06:35,205 INFO L124 PetriNetUnfolderBase]: 171/419 cut-off events. [2023-08-25 06:06:35,205 INFO L125 PetriNetUnfolderBase]: For 1611/1662 co-relation queries the response was YES. [2023-08-25 06:06:35,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1564 conditions, 419 events. 171/419 cut-off events. For 1611/1662 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2235 event pairs, 37 based on Foata normal form. 14/402 useless extension candidates. Maximal degree in co-relation 1543. Up to 143 conditions per place. [2023-08-25 06:06:35,208 INFO L140 encePairwiseOnDemand]: 198/202 looper letters, 41 selfloop transitions, 11 changer transitions 9/73 dead transitions. [2023-08-25 06:06:35,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 73 transitions, 657 flow [2023-08-25 06:06:35,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 06:06:35,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 06:06:35,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 395 transitions. [2023-08-25 06:06:35,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48886138613861385 [2023-08-25 06:06:35,210 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 395 transitions. [2023-08-25 06:06:35,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 395 transitions. [2023-08-25 06:06:35,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:06:35,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 395 transitions. [2023-08-25 06:06:35,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 98.75) internal successors, (395), 4 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:35,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 202.0) internal successors, (1010), 5 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:35,213 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 202.0) internal successors, (1010), 5 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:35,213 INFO L175 Difference]: Start difference. First operand has 60 places, 43 transitions, 345 flow. Second operand 4 states and 395 transitions. [2023-08-25 06:06:35,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 73 transitions, 657 flow [2023-08-25 06:06:35,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 73 transitions, 560 flow, removed 17 selfloop flow, removed 7 redundant places. [2023-08-25 06:06:35,218 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 398 flow [2023-08-25 06:06:35,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=398, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2023-08-25 06:06:35,219 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 23 predicate places. [2023-08-25 06:06:35,219 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 398 flow [2023-08-25 06:06:35,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:35,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:06:35,220 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:06:35,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-25 06:06:35,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:35,426 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 06:06:35,427 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:06:35,427 INFO L85 PathProgramCache]: Analyzing trace with hash -315345176, now seen corresponding path program 2 times [2023-08-25 06:06:35,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:06:35,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18823842] [2023-08-25 06:06:35,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:35,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:06:35,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:35,510 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:35,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:06:35,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18823842] [2023-08-25 06:06:35,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18823842] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:06:35,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16877857] [2023-08-25 06:06:35,511 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 06:06:35,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:35,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:06:35,512 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:06:35,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-25 06:06:35,580 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 06:06:35,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:06:35,581 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 06:06:35,583 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:06:35,650 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:35,650 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:06:35,691 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:35,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16877857] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:06:35,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:06:35,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2023-08-25 06:06:35,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148031993] [2023-08-25 06:06:35,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:06:35,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-25 06:06:35,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:06:35,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-25 06:06:35,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-08-25 06:06:35,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-25 06:06:35,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 398 flow. Second operand has 13 states, 13 states have (on average 80.15384615384616) internal successors, (1042), 13 states have internal predecessors, (1042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:35,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:06:35,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-25 06:06:35,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:06:35,917 INFO L124 PetriNetUnfolderBase]: 298/691 cut-off events. [2023-08-25 06:06:35,917 INFO L125 PetriNetUnfolderBase]: For 2244/2361 co-relation queries the response was YES. [2023-08-25 06:06:35,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2482 conditions, 691 events. 298/691 cut-off events. For 2244/2361 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3795 event pairs, 71 based on Foata normal form. 78/733 useless extension candidates. Maximal degree in co-relation 2463. Up to 214 conditions per place. [2023-08-25 06:06:35,922 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 50 selfloop transitions, 40 changer transitions 1/97 dead transitions. [2023-08-25 06:06:35,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 97 transitions, 875 flow [2023-08-25 06:06:35,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-25 06:06:35,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-25 06:06:35,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1239 transitions. [2023-08-25 06:06:35,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4089108910891089 [2023-08-25 06:06:35,925 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1239 transitions. [2023-08-25 06:06:35,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1239 transitions. [2023-08-25 06:06:35,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:06:35,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1239 transitions. [2023-08-25 06:06:35,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 82.6) internal successors, (1239), 15 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:35,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 202.0) internal successors, (3232), 16 states have internal predecessors, (3232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:35,931 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 202.0) internal successors, (3232), 16 states have internal predecessors, (3232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:35,931 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 398 flow. Second operand 15 states and 1239 transitions. [2023-08-25 06:06:35,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 97 transitions, 875 flow [2023-08-25 06:06:35,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 97 transitions, 849 flow, removed 13 selfloop flow, removed 0 redundant places. [2023-08-25 06:06:35,936 INFO L231 Difference]: Finished difference. Result has 76 places, 72 transitions, 697 flow [2023-08-25 06:06:35,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=697, PETRI_PLACES=76, PETRI_TRANSITIONS=72} [2023-08-25 06:06:35,937 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 41 predicate places. [2023-08-25 06:06:35,937 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 72 transitions, 697 flow [2023-08-25 06:06:35,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 80.15384615384616) internal successors, (1042), 13 states have internal predecessors, (1042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:35,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:06:35,937 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:06:35,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-25 06:06:36,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:36,143 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 06:06:36,144 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:06:36,144 INFO L85 PathProgramCache]: Analyzing trace with hash 903132036, now seen corresponding path program 3 times [2023-08-25 06:06:36,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:06:36,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749385277] [2023-08-25 06:06:36,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:36,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:06:36,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:36,246 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:36,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:06:36,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749385277] [2023-08-25 06:06:36,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749385277] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:06:36,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494500359] [2023-08-25 06:06:36,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 06:06:36,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:36,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:06:36,248 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:06:36,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-25 06:06:36,323 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-25 06:06:36,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:06:36,324 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 06:06:36,325 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:06:36,427 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:36,428 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:06:36,497 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 06:06:36,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494500359] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:06:36,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:06:36,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2023-08-25 06:06:36,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137066911] [2023-08-25 06:06:36,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:06:36,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-25 06:06:36,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:06:36,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-25 06:06:36,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-08-25 06:06:36,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-25 06:06:36,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 72 transitions, 697 flow. Second operand has 13 states, 13 states have (on average 80.23076923076923) internal successors, (1043), 13 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:36,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:06:36,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-25 06:06:36,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:06:36,745 INFO L124 PetriNetUnfolderBase]: 299/730 cut-off events. [2023-08-25 06:06:36,745 INFO L125 PetriNetUnfolderBase]: For 4192/4338 co-relation queries the response was YES. [2023-08-25 06:06:36,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2975 conditions, 730 events. 299/730 cut-off events. For 4192/4338 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4198 event pairs, 67 based on Foata normal form. 157/851 useless extension candidates. Maximal degree in co-relation 2951. Up to 184 conditions per place. [2023-08-25 06:06:36,750 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 53 selfloop transitions, 50 changer transitions 1/110 dead transitions. [2023-08-25 06:06:36,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 110 transitions, 1148 flow [2023-08-25 06:06:36,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-25 06:06:36,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-25 06:06:36,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1411 transitions. [2023-08-25 06:06:36,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41089108910891087 [2023-08-25 06:06:36,767 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1411 transitions. [2023-08-25 06:06:36,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1411 transitions. [2023-08-25 06:06:36,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:06:36,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1411 transitions. [2023-08-25 06:06:36,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 83.0) internal successors, (1411), 17 states have internal predecessors, (1411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:36,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 202.0) internal successors, (3636), 18 states have internal predecessors, (3636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:36,812 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 202.0) internal successors, (3636), 18 states have internal predecessors, (3636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:36,812 INFO L175 Difference]: Start difference. First operand has 76 places, 72 transitions, 697 flow. Second operand 17 states and 1411 transitions. [2023-08-25 06:06:36,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 110 transitions, 1148 flow [2023-08-25 06:06:36,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 110 transitions, 998 flow, removed 52 selfloop flow, removed 7 redundant places. [2023-08-25 06:06:36,820 INFO L231 Difference]: Finished difference. Result has 89 places, 80 transitions, 786 flow [2023-08-25 06:06:36,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=786, PETRI_PLACES=89, PETRI_TRANSITIONS=80} [2023-08-25 06:06:36,821 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 54 predicate places. [2023-08-25 06:06:36,821 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 80 transitions, 786 flow [2023-08-25 06:06:36,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 80.23076923076923) internal successors, (1043), 13 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:36,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:06:36,822 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:06:36,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-25 06:06:37,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-25 06:06:37,027 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 06:06:37,027 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:06:37,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1330282894, now seen corresponding path program 4 times [2023-08-25 06:06:37,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:06:37,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338794748] [2023-08-25 06:06:37,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:37,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:06:37,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:37,085 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:37,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:06:37,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338794748] [2023-08-25 06:06:37,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338794748] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:06:37,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513204706] [2023-08-25 06:06:37,085 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 06:06:37,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:37,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:06:37,086 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:06:37,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-25 06:06:37,141 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 06:06:37,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:06:37,141 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 06:06:37,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:06:37,191 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:37,192 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:06:37,229 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:37,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513204706] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:06:37,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:06:37,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-08-25 06:06:37,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241640121] [2023-08-25 06:06:37,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:06:37,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-25 06:06:37,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:06:37,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-25 06:06:37,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-08-25 06:06:37,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-25 06:06:37,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 80 transitions, 786 flow. Second operand has 15 states, 15 states have (on average 79.86666666666666) internal successors, (1198), 15 states have internal predecessors, (1198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:37,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:06:37,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-25 06:06:37,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:06:37,530 INFO L124 PetriNetUnfolderBase]: 354/870 cut-off events. [2023-08-25 06:06:37,530 INFO L125 PetriNetUnfolderBase]: For 5197/5369 co-relation queries the response was YES. [2023-08-25 06:06:37,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3598 conditions, 870 events. 354/870 cut-off events. For 5197/5369 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5169 event pairs, 76 based on Foata normal form. 160/991 useless extension candidates. Maximal degree in co-relation 3570. Up to 189 conditions per place. [2023-08-25 06:06:37,536 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 65 selfloop transitions, 70 changer transitions 0/141 dead transitions. [2023-08-25 06:06:37,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 141 transitions, 1450 flow [2023-08-25 06:06:37,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-25 06:06:37,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-25 06:06:37,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1899 transitions. [2023-08-25 06:06:37,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4087386999569522 [2023-08-25 06:06:37,541 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1899 transitions. [2023-08-25 06:06:37,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1899 transitions. [2023-08-25 06:06:37,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:06:37,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1899 transitions. [2023-08-25 06:06:37,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 82.56521739130434) internal successors, (1899), 23 states have internal predecessors, (1899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:37,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 202.0) internal successors, (4848), 24 states have internal predecessors, (4848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:37,549 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 202.0) internal successors, (4848), 24 states have internal predecessors, (4848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:37,549 INFO L175 Difference]: Start difference. First operand has 89 places, 80 transitions, 786 flow. Second operand 23 states and 1899 transitions. [2023-08-25 06:06:37,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 141 transitions, 1450 flow [2023-08-25 06:06:37,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 141 transitions, 1300 flow, removed 31 selfloop flow, removed 10 redundant places. [2023-08-25 06:06:37,559 INFO L231 Difference]: Finished difference. Result has 105 places, 100 transitions, 1062 flow [2023-08-25 06:06:37,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=677, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1062, PETRI_PLACES=105, PETRI_TRANSITIONS=100} [2023-08-25 06:06:37,559 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 70 predicate places. [2023-08-25 06:06:37,560 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 100 transitions, 1062 flow [2023-08-25 06:06:37,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 79.86666666666666) internal successors, (1198), 15 states have internal predecessors, (1198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:37,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:06:37,560 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:06:37,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-25 06:06:37,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:37,767 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 06:06:37,767 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:06:37,767 INFO L85 PathProgramCache]: Analyzing trace with hash -230649462, now seen corresponding path program 5 times [2023-08-25 06:06:37,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:06:37,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178153541] [2023-08-25 06:06:37,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:37,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:06:37,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:37,820 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:37,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:06:37,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178153541] [2023-08-25 06:06:37,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178153541] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:06:37,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090920877] [2023-08-25 06:06:37,820 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 06:06:37,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:37,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:06:37,821 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:06:37,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-25 06:06:37,888 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-25 06:06:37,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:06:37,889 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 06:06:37,890 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:06:37,928 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:37,929 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:06:37,965 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:37,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090920877] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:06:37,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:06:37,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-08-25 06:06:37,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651377495] [2023-08-25 06:06:37,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:06:37,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-25 06:06:37,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:06:37,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-25 06:06:37,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-08-25 06:06:37,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-25 06:06:37,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 100 transitions, 1062 flow. Second operand has 11 states, 11 states have (on average 80.0909090909091) internal successors, (881), 11 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:37,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:06:37,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-25 06:06:37,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:06:38,208 INFO L124 PetriNetUnfolderBase]: 477/1198 cut-off events. [2023-08-25 06:06:38,208 INFO L125 PetriNetUnfolderBase]: For 7955/8165 co-relation queries the response was YES. [2023-08-25 06:06:38,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5241 conditions, 1198 events. 477/1198 cut-off events. For 7955/8165 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 7641 event pairs, 87 based on Foata normal form. 139/1294 useless extension candidates. Maximal degree in co-relation 5208. Up to 257 conditions per place. [2023-08-25 06:06:38,217 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 94 selfloop transitions, 60 changer transitions 8/168 dead transitions. [2023-08-25 06:06:38,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 168 transitions, 1991 flow [2023-08-25 06:06:38,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-25 06:06:38,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-25 06:06:38,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 841 transitions. [2023-08-25 06:06:38,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4163366336633663 [2023-08-25 06:06:38,220 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 841 transitions. [2023-08-25 06:06:38,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 841 transitions. [2023-08-25 06:06:38,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:06:38,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 841 transitions. [2023-08-25 06:06:38,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 84.1) internal successors, (841), 10 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:38,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 202.0) internal successors, (2222), 11 states have internal predecessors, (2222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:38,224 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 202.0) internal successors, (2222), 11 states have internal predecessors, (2222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:38,224 INFO L175 Difference]: Start difference. First operand has 105 places, 100 transitions, 1062 flow. Second operand 10 states and 841 transitions. [2023-08-25 06:06:38,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 168 transitions, 1991 flow [2023-08-25 06:06:38,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 168 transitions, 1770 flow, removed 75 selfloop flow, removed 10 redundant places. [2023-08-25 06:06:38,241 INFO L231 Difference]: Finished difference. Result has 110 places, 131 transitions, 1500 flow [2023-08-25 06:06:38,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=925, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1500, PETRI_PLACES=110, PETRI_TRANSITIONS=131} [2023-08-25 06:06:38,241 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 75 predicate places. [2023-08-25 06:06:38,241 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 131 transitions, 1500 flow [2023-08-25 06:06:38,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 80.0909090909091) internal successors, (881), 11 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:38,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:06:38,242 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:06:38,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-25 06:06:38,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:38,448 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 06:06:38,448 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:06:38,448 INFO L85 PathProgramCache]: Analyzing trace with hash 448774274, now seen corresponding path program 6 times [2023-08-25 06:06:38,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:06:38,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243213803] [2023-08-25 06:06:38,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:38,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:06:38,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:38,503 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:38,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:06:38,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243213803] [2023-08-25 06:06:38,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243213803] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:06:38,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186323936] [2023-08-25 06:06:38,504 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 06:06:38,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:38,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:06:38,505 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:06:38,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-25 06:06:38,590 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-25 06:06:38,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:06:38,592 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 06:06:38,592 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:06:38,646 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:38,647 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:06:38,697 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:38,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186323936] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:06:38,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:06:38,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-08-25 06:06:38,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403241790] [2023-08-25 06:06:38,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:06:38,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-25 06:06:38,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:06:38,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-25 06:06:38,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-08-25 06:06:38,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-25 06:06:38,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 131 transitions, 1500 flow. Second operand has 13 states, 13 states have (on average 80.15384615384616) internal successors, (1042), 13 states have internal predecessors, (1042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:38,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:06:38,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-25 06:06:38,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:06:39,017 INFO L124 PetriNetUnfolderBase]: 550/1411 cut-off events. [2023-08-25 06:06:39,017 INFO L125 PetriNetUnfolderBase]: For 9196/9359 co-relation queries the response was YES. [2023-08-25 06:06:39,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6309 conditions, 1411 events. 550/1411 cut-off events. For 9196/9359 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 9360 event pairs, 127 based on Foata normal form. 81/1435 useless extension candidates. Maximal degree in co-relation 6269. Up to 298 conditions per place. [2023-08-25 06:06:39,030 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 91 selfloop transitions, 88 changer transitions 1/186 dead transitions. [2023-08-25 06:06:39,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 186 transitions, 2281 flow [2023-08-25 06:06:39,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-25 06:06:39,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-25 06:06:39,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1161 transitions. [2023-08-25 06:06:39,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41053748231966053 [2023-08-25 06:06:39,032 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1161 transitions. [2023-08-25 06:06:39,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1161 transitions. [2023-08-25 06:06:39,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:06:39,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1161 transitions. [2023-08-25 06:06:39,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 82.92857142857143) internal successors, (1161), 14 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:39,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 202.0) internal successors, (3030), 15 states have internal predecessors, (3030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:39,037 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 202.0) internal successors, (3030), 15 states have internal predecessors, (3030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:39,037 INFO L175 Difference]: Start difference. First operand has 110 places, 131 transitions, 1500 flow. Second operand 14 states and 1161 transitions. [2023-08-25 06:06:39,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 186 transitions, 2281 flow [2023-08-25 06:06:39,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 186 transitions, 2158 flow, removed 29 selfloop flow, removed 5 redundant places. [2023-08-25 06:06:39,062 INFO L231 Difference]: Finished difference. Result has 125 places, 156 transitions, 1957 flow [2023-08-25 06:06:39,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=1389, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1957, PETRI_PLACES=125, PETRI_TRANSITIONS=156} [2023-08-25 06:06:39,063 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 90 predicate places. [2023-08-25 06:06:39,063 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 156 transitions, 1957 flow [2023-08-25 06:06:39,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 80.15384615384616) internal successors, (1042), 13 states have internal predecessors, (1042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:39,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:06:39,064 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:06:39,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-25 06:06:39,269 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,SelfDestructingSolverStorable14 [2023-08-25 06:06:39,269 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 06:06:39,269 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:06:39,270 INFO L85 PathProgramCache]: Analyzing trace with hash 125609296, now seen corresponding path program 7 times [2023-08-25 06:06:39,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:06:39,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750437160] [2023-08-25 06:06:39,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:39,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:06:39,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:39,321 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:39,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:06:39,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750437160] [2023-08-25 06:06:39,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750437160] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:06:39,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267262004] [2023-08-25 06:06:39,321 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 06:06:39,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:39,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:06:39,323 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:06:39,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-25 06:06:39,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:39,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 06:06:39,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:06:39,481 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:39,481 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:06:39,511 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:39,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267262004] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:06:39,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:06:39,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-08-25 06:06:39,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279968996] [2023-08-25 06:06:39,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:06:39,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-25 06:06:39,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:06:39,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-25 06:06:39,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-08-25 06:06:39,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-25 06:06:39,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 156 transitions, 1957 flow. Second operand has 12 states, 12 states have (on average 80.0) internal successors, (960), 12 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:39,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:06:39,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-25 06:06:39,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:06:39,929 INFO L124 PetriNetUnfolderBase]: 645/1638 cut-off events. [2023-08-25 06:06:39,929 INFO L125 PetriNetUnfolderBase]: For 12514/12682 co-relation queries the response was YES. [2023-08-25 06:06:39,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7750 conditions, 1638 events. 645/1638 cut-off events. For 12514/12682 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 11374 event pairs, 137 based on Foata normal form. 139/1720 useless extension candidates. Maximal degree in co-relation 7705. Up to 341 conditions per place. [2023-08-25 06:06:39,946 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 69 selfloop transitions, 132 changer transitions 0/207 dead transitions. [2023-08-25 06:06:39,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 207 transitions, 2811 flow [2023-08-25 06:06:39,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-25 06:06:39,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-25 06:06:39,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1327 transitions. [2023-08-25 06:06:39,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41058168316831684 [2023-08-25 06:06:39,948 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1327 transitions. [2023-08-25 06:06:39,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1327 transitions. [2023-08-25 06:06:39,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:06:39,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1327 transitions. [2023-08-25 06:06:39,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 82.9375) internal successors, (1327), 16 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:39,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 202.0) internal successors, (3434), 17 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) [2023-08-25 06:06:39,954 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 202.0) internal successors, (3434), 17 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) [2023-08-25 06:06:39,954 INFO L175 Difference]: Start difference. First operand has 125 places, 156 transitions, 1957 flow. Second operand 16 states and 1327 transitions. [2023-08-25 06:06:39,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 207 transitions, 2811 flow [2023-08-25 06:06:39,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 207 transitions, 2702 flow, removed 21 selfloop flow, removed 5 redundant places. [2023-08-25 06:06:39,987 INFO L231 Difference]: Finished difference. Result has 139 places, 178 transitions, 2533 flow [2023-08-25 06:06:39,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=1865, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2533, PETRI_PLACES=139, PETRI_TRANSITIONS=178} [2023-08-25 06:06:39,987 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 104 predicate places. [2023-08-25 06:06:39,988 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 178 transitions, 2533 flow [2023-08-25 06:06:39,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 80.0) internal successors, (960), 12 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:39,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:06:39,988 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:06:39,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-25 06:06:40,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-25 06:06:40,194 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 06:06:40,194 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:06:40,194 INFO L85 PathProgramCache]: Analyzing trace with hash 643369194, now seen corresponding path program 8 times [2023-08-25 06:06:40,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:06:40,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806406160] [2023-08-25 06:06:40,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:40,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:06:40,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:40,244 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:40,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:06:40,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806406160] [2023-08-25 06:06:40,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806406160] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:06:40,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32064840] [2023-08-25 06:06:40,244 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 06:06:40,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:40,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:06:40,245 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:06:40,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-25 06:06:40,324 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 06:06:40,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:06:40,325 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 06:06:40,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:06:40,379 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:40,379 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:06:40,410 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:40,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32064840] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:06:40,410 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:06:40,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-08-25 06:06:40,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15245221] [2023-08-25 06:06:40,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:06:40,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-25 06:06:40,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:06:40,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-25 06:06:40,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-08-25 06:06:40,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-25 06:06:40,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 178 transitions, 2533 flow. Second operand has 12 states, 12 states have (on average 80.0) internal successors, (960), 12 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:40,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:06:40,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-25 06:06:40,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:06:40,740 INFO L124 PetriNetUnfolderBase]: 640/1663 cut-off events. [2023-08-25 06:06:40,740 INFO L125 PetriNetUnfolderBase]: For 17175/17356 co-relation queries the response was YES. [2023-08-25 06:06:40,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8396 conditions, 1663 events. 640/1663 cut-off events. For 17175/17356 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 11896 event pairs, 202 based on Foata normal form. 110/1718 useless extension candidates. Maximal degree in co-relation 8347. Up to 598 conditions per place. [2023-08-25 06:06:40,765 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 91 selfloop transitions, 104 changer transitions 2/203 dead transitions. [2023-08-25 06:06:40,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 203 transitions, 3116 flow [2023-08-25 06:06:40,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-25 06:06:40,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-25 06:06:40,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1155 transitions. [2023-08-25 06:06:40,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4084158415841584 [2023-08-25 06:06:40,768 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1155 transitions. [2023-08-25 06:06:40,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1155 transitions. [2023-08-25 06:06:40,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:06:40,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1155 transitions. [2023-08-25 06:06:40,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 82.5) internal successors, (1155), 14 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:40,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 202.0) internal successors, (3030), 15 states have internal predecessors, (3030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:40,844 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 202.0) internal successors, (3030), 15 states have internal predecessors, (3030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:40,844 INFO L175 Difference]: Start difference. First operand has 139 places, 178 transitions, 2533 flow. Second operand 14 states and 1155 transitions. [2023-08-25 06:06:40,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 203 transitions, 3116 flow [2023-08-25 06:06:40,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 203 transitions, 2936 flow, removed 49 selfloop flow, removed 8 redundant places. [2023-08-25 06:06:40,907 INFO L231 Difference]: Finished difference. Result has 146 places, 178 transitions, 2578 flow [2023-08-25 06:06:40,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=2353, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2578, PETRI_PLACES=146, PETRI_TRANSITIONS=178} [2023-08-25 06:06:40,907 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 111 predicate places. [2023-08-25 06:06:40,908 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 178 transitions, 2578 flow [2023-08-25 06:06:40,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 80.0) internal successors, (960), 12 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:40,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:06:40,908 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:06:40,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-25 06:06:41,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-25 06:06:41,115 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 06:06:41,115 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:06:41,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1809665566, now seen corresponding path program 9 times [2023-08-25 06:06:41,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:06:41,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641216744] [2023-08-25 06:06:41,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:41,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:06:41,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:41,188 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:41,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:06:41,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641216744] [2023-08-25 06:06:41,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641216744] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:06:41,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433945375] [2023-08-25 06:06:41,189 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 06:06:41,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:41,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:06:41,190 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:06:41,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-25 06:06:41,274 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-25 06:06:41,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:06:41,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 06:06:41,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:06:41,333 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:41,333 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:06:41,373 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:41,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433945375] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:06:41,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:06:41,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-08-25 06:06:41,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307455033] [2023-08-25 06:06:41,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:06:41,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-25 06:06:41,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:06:41,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-25 06:06:41,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-08-25 06:06:41,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-25 06:06:41,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 178 transitions, 2578 flow. Second operand has 15 states, 15 states have (on average 79.8) internal successors, (1197), 15 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:41,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:06:41,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-25 06:06:41,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:06:41,797 INFO L124 PetriNetUnfolderBase]: 705/1794 cut-off events. [2023-08-25 06:06:41,797 INFO L125 PetriNetUnfolderBase]: For 20588/20832 co-relation queries the response was YES. [2023-08-25 06:06:41,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9321 conditions, 1794 events. 705/1794 cut-off events. For 20588/20832 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 12863 event pairs, 273 based on Foata normal form. 130/1857 useless extension candidates. Maximal degree in co-relation 9270. Up to 911 conditions per place. [2023-08-25 06:06:41,815 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 175 selfloop transitions, 57 changer transitions 1/239 dead transitions. [2023-08-25 06:06:41,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 239 transitions, 3717 flow [2023-08-25 06:06:41,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-25 06:06:41,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-25 06:06:41,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1496 transitions. [2023-08-25 06:06:41,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41144114411441146 [2023-08-25 06:06:41,818 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1496 transitions. [2023-08-25 06:06:41,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1496 transitions. [2023-08-25 06:06:41,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:06:41,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1496 transitions. [2023-08-25 06:06:41,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 83.11111111111111) internal successors, (1496), 18 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:41,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 202.0) internal successors, (3838), 19 states have internal predecessors, (3838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:41,822 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 202.0) internal successors, (3838), 19 states have internal predecessors, (3838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:41,823 INFO L175 Difference]: Start difference. First operand has 146 places, 178 transitions, 2578 flow. Second operand 18 states and 1496 transitions. [2023-08-25 06:06:41,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 239 transitions, 3717 flow [2023-08-25 06:06:41,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 239 transitions, 3475 flow, removed 23 selfloop flow, removed 11 redundant places. [2023-08-25 06:06:41,866 INFO L231 Difference]: Finished difference. Result has 164 places, 206 transitions, 3060 flow [2023-08-25 06:06:41,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=2382, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3060, PETRI_PLACES=164, PETRI_TRANSITIONS=206} [2023-08-25 06:06:41,867 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 129 predicate places. [2023-08-25 06:06:41,867 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 206 transitions, 3060 flow [2023-08-25 06:06:41,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 79.8) internal successors, (1197), 15 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:41,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:06:41,867 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:06:41,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-25 06:06:42,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-25 06:06:42,073 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 06:06:42,073 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:06:42,073 INFO L85 PathProgramCache]: Analyzing trace with hash -2047205090, now seen corresponding path program 10 times [2023-08-25 06:06:42,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:06:42,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34775728] [2023-08-25 06:06:42,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:42,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:06:42,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:42,140 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:42,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:06:42,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34775728] [2023-08-25 06:06:42,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34775728] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:06:42,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275243021] [2023-08-25 06:06:42,141 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 06:06:42,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:42,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:06:42,142 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:06:42,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-25 06:06:42,204 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 06:06:42,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:06:42,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 06:06:42,206 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:06:42,278 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:42,278 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:06:42,307 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:42,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275243021] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:06:42,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:06:42,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2023-08-25 06:06:42,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879924333] [2023-08-25 06:06:42,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:06:42,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-25 06:06:42,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:06:42,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-25 06:06:42,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-08-25 06:06:42,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-25 06:06:42,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 206 transitions, 3060 flow. Second operand has 13 states, 13 states have (on average 80.0) internal successors, (1040), 13 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:42,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:06:42,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-25 06:06:42,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:06:42,631 INFO L124 PetriNetUnfolderBase]: 712/1827 cut-off events. [2023-08-25 06:06:42,631 INFO L125 PetriNetUnfolderBase]: For 24030/24332 co-relation queries the response was YES. [2023-08-25 06:06:42,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9697 conditions, 1827 events. 712/1827 cut-off events. For 24030/24332 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 13256 event pairs, 269 based on Foata normal form. 100/1861 useless extension candidates. Maximal degree in co-relation 9636. Up to 911 conditions per place. [2023-08-25 06:06:42,650 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 165 selfloop transitions, 54 changer transitions 1/226 dead transitions. [2023-08-25 06:06:42,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 226 transitions, 3735 flow [2023-08-25 06:06:42,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-25 06:06:42,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-25 06:06:42,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 911 transitions. [2023-08-25 06:06:42,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40999099909991 [2023-08-25 06:06:42,653 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 911 transitions. [2023-08-25 06:06:42,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 911 transitions. [2023-08-25 06:06:42,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:06:42,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 911 transitions. [2023-08-25 06:06:42,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 82.81818181818181) internal successors, (911), 11 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:42,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 202.0) internal successors, (2424), 12 states have internal predecessors, (2424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:42,656 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 202.0) internal successors, (2424), 12 states have internal predecessors, (2424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:42,656 INFO L175 Difference]: Start difference. First operand has 164 places, 206 transitions, 3060 flow. Second operand 11 states and 911 transitions. [2023-08-25 06:06:42,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 226 transitions, 3735 flow [2023-08-25 06:06:42,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 226 transitions, 3371 flow, removed 165 selfloop flow, removed 5 redundant places. [2023-08-25 06:06:42,717 INFO L231 Difference]: Finished difference. Result has 170 places, 209 transitions, 2868 flow [2023-08-25 06:06:42,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=2696, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2868, PETRI_PLACES=170, PETRI_TRANSITIONS=209} [2023-08-25 06:06:42,718 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 135 predicate places. [2023-08-25 06:06:42,718 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 209 transitions, 2868 flow [2023-08-25 06:06:42,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 80.0) internal successors, (1040), 13 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:42,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:06:42,718 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:06:42,725 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-08-25 06:06:42,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:42,924 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 06:06:42,924 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:06:42,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1608763259, now seen corresponding path program 11 times [2023-08-25 06:06:42,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:06:42,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050175487] [2023-08-25 06:06:42,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:42,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:06:42,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:42,995 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 06:06:42,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:06:42,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050175487] [2023-08-25 06:06:42,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050175487] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:06:42,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418909680] [2023-08-25 06:06:42,995 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 06:06:42,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:42,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:06:42,996 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:06:43,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-25 06:06:43,075 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-25 06:06:43,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:06:43,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-25 06:06:43,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:06:43,116 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 06:06:43,116 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:06:43,158 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 06:06:43,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418909680] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:06:43,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:06:43,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2023-08-25 06:06:43,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857681344] [2023-08-25 06:06:43,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:06:43,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 06:06:43,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:06:43,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 06:06:43,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-25 06:06:43,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 202 [2023-08-25 06:06:43,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 209 transitions, 2868 flow. Second operand has 5 states, 5 states have (on average 93.0) internal successors, (465), 5 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:43,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:06:43,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 202 [2023-08-25 06:06:43,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:06:43,529 INFO L124 PetriNetUnfolderBase]: 1029/2553 cut-off events. [2023-08-25 06:06:43,529 INFO L125 PetriNetUnfolderBase]: For 33592/34008 co-relation queries the response was YES. [2023-08-25 06:06:43,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13440 conditions, 2553 events. 1029/2553 cut-off events. For 33592/34008 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 19921 event pairs, 212 based on Foata normal form. 125/2565 useless extension candidates. Maximal degree in co-relation 13378. Up to 860 conditions per place. [2023-08-25 06:06:43,557 INFO L140 encePairwiseOnDemand]: 198/202 looper letters, 212 selfloop transitions, 81 changer transitions 37/343 dead transitions. [2023-08-25 06:06:43,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 343 transitions, 5217 flow [2023-08-25 06:06:43,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 06:06:43,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 06:06:43,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 496 transitions. [2023-08-25 06:06:43,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4910891089108911 [2023-08-25 06:06:43,558 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 496 transitions. [2023-08-25 06:06:43,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 496 transitions. [2023-08-25 06:06:43,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:06:43,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 496 transitions. [2023-08-25 06:06:43,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 99.2) internal successors, (496), 5 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:43,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 202.0) internal successors, (1212), 6 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:43,560 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 202.0) internal successors, (1212), 6 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:43,560 INFO L175 Difference]: Start difference. First operand has 170 places, 209 transitions, 2868 flow. Second operand 5 states and 496 transitions. [2023-08-25 06:06:43,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 343 transitions, 5217 flow [2023-08-25 06:06:43,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 343 transitions, 5118 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-25 06:06:43,643 INFO L231 Difference]: Finished difference. Result has 173 places, 257 transitions, 3826 flow [2023-08-25 06:06:43,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=2800, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3826, PETRI_PLACES=173, PETRI_TRANSITIONS=257} [2023-08-25 06:06:43,643 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 138 predicate places. [2023-08-25 06:06:43,644 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 257 transitions, 3826 flow [2023-08-25 06:06:43,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 93.0) internal successors, (465), 5 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:43,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:06:43,644 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:06:43,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-25 06:06:43,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2023-08-25 06:06:43,852 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 06:06:43,853 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:06:43,853 INFO L85 PathProgramCache]: Analyzing trace with hash 548121127, now seen corresponding path program 12 times [2023-08-25 06:06:43,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:06:43,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100077031] [2023-08-25 06:06:43,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:43,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:06:43,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:43,959 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:43,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:06:43,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100077031] [2023-08-25 06:06:43,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100077031] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:06:43,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91034812] [2023-08-25 06:06:43,960 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 06:06:43,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:43,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:06:43,961 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:06:43,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-25 06:06:44,054 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-25 06:06:44,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:06:44,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-25 06:06:44,057 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:06:44,149 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:44,149 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:06:44,215 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:44,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91034812] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:06:44,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:06:44,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-08-25 06:06:44,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388678799] [2023-08-25 06:06:44,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:06:44,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-25 06:06:44,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:06:44,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-25 06:06:44,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2023-08-25 06:06:44,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-25 06:06:44,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 257 transitions, 3826 flow. Second operand has 20 states, 20 states have (on average 79.75) internal successors, (1595), 20 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:44,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:06:44,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-25 06:06:44,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:06:45,201 INFO L124 PetriNetUnfolderBase]: 1458/3699 cut-off events. [2023-08-25 06:06:45,201 INFO L125 PetriNetUnfolderBase]: For 65459/66336 co-relation queries the response was YES. [2023-08-25 06:06:45,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20651 conditions, 3699 events. 1458/3699 cut-off events. For 65459/66336 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 30662 event pairs, 322 based on Foata normal form. 575/4143 useless extension candidates. Maximal degree in co-relation 20586. Up to 832 conditions per place. [2023-08-25 06:06:45,244 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 160 selfloop transitions, 276 changer transitions 7/449 dead transitions. [2023-08-25 06:06:45,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 449 transitions, 7467 flow [2023-08-25 06:06:45,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-08-25 06:06:45,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-08-25 06:06:45,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 2977 transitions. [2023-08-25 06:06:45,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40937843784378436 [2023-08-25 06:06:45,261 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 2977 transitions. [2023-08-25 06:06:45,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 2977 transitions. [2023-08-25 06:06:45,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:06:45,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 2977 transitions. [2023-08-25 06:06:45,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 82.69444444444444) internal successors, (2977), 36 states have internal predecessors, (2977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:45,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 202.0) internal successors, (7474), 37 states have internal predecessors, (7474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:45,271 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 202.0) internal successors, (7474), 37 states have internal predecessors, (7474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:45,272 INFO L175 Difference]: Start difference. First operand has 173 places, 257 transitions, 3826 flow. Second operand 36 states and 2977 transitions. [2023-08-25 06:06:45,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 449 transitions, 7467 flow [2023-08-25 06:06:45,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 449 transitions, 7321 flow, removed 73 selfloop flow, removed 0 redundant places. [2023-08-25 06:06:45,591 INFO L231 Difference]: Finished difference. Result has 224 places, 384 transitions, 7166 flow [2023-08-25 06:06:45,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=3738, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=7166, PETRI_PLACES=224, PETRI_TRANSITIONS=384} [2023-08-25 06:06:45,592 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 189 predicate places. [2023-08-25 06:06:45,592 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 384 transitions, 7166 flow [2023-08-25 06:06:45,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 79.75) internal successors, (1595), 20 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:45,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:06:45,593 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:06:45,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-25 06:06:45,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:45,800 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 06:06:45,800 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:06:45,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1597656913, now seen corresponding path program 13 times [2023-08-25 06:06:45,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:06:45,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307565419] [2023-08-25 06:06:45,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:45,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:06:45,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:45,907 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:45,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:06:45,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307565419] [2023-08-25 06:06:45,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307565419] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:06:45,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049855035] [2023-08-25 06:06:45,908 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 06:06:45,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:45,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:06:45,910 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:06:45,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-25 06:06:46,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:46,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-25 06:06:46,011 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:06:46,134 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:46,135 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:06:46,215 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:46,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049855035] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:06:46,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:06:46,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 17 [2023-08-25 06:06:46,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097270572] [2023-08-25 06:06:46,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:06:46,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-25 06:06:46,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:06:46,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-25 06:06:46,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2023-08-25 06:06:46,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-25 06:06:46,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 384 transitions, 7166 flow. Second operand has 17 states, 17 states have (on average 79.76470588235294) internal successors, (1356), 17 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:46,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:06:46,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-25 06:06:46,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:06:47,124 INFO L124 PetriNetUnfolderBase]: 1575/3961 cut-off events. [2023-08-25 06:06:47,125 INFO L125 PetriNetUnfolderBase]: For 82907/83875 co-relation queries the response was YES. [2023-08-25 06:06:47,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24168 conditions, 3961 events. 1575/3961 cut-off events. For 82907/83875 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 33454 event pairs, 478 based on Foata normal form. 462/4253 useless extension candidates. Maximal degree in co-relation 24086. Up to 1257 conditions per place. [2023-08-25 06:06:47,166 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 197 selfloop transitions, 246 changer transitions 0/449 dead transitions. [2023-08-25 06:06:47,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 449 transitions, 9087 flow [2023-08-25 06:06:47,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-25 06:06:47,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-25 06:06:47,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1728 transitions. [2023-08-25 06:06:47,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4073550212164074 [2023-08-25 06:06:47,168 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1728 transitions. [2023-08-25 06:06:47,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1728 transitions. [2023-08-25 06:06:47,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:06:47,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1728 transitions. [2023-08-25 06:06:47,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 82.28571428571429) internal successors, (1728), 21 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:47,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 202.0) internal successors, (4444), 22 states have internal predecessors, (4444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:47,174 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 202.0) internal successors, (4444), 22 states have internal predecessors, (4444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:47,174 INFO L175 Difference]: Start difference. First operand has 224 places, 384 transitions, 7166 flow. Second operand 21 states and 1728 transitions. [2023-08-25 06:06:47,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 449 transitions, 9087 flow [2023-08-25 06:06:47,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 449 transitions, 7797 flow, removed 617 selfloop flow, removed 9 redundant places. [2023-08-25 06:06:47,615 INFO L231 Difference]: Finished difference. Result has 237 places, 420 transitions, 7310 flow [2023-08-25 06:06:47,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=6170, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=7310, PETRI_PLACES=237, PETRI_TRANSITIONS=420} [2023-08-25 06:06:47,615 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 202 predicate places. [2023-08-25 06:06:47,615 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 420 transitions, 7310 flow [2023-08-25 06:06:47,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 79.76470588235294) internal successors, (1356), 17 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:47,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:06:47,616 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:06:47,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-25 06:06:47,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:47,817 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 06:06:47,817 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:06:47,817 INFO L85 PathProgramCache]: Analyzing trace with hash -588553881, now seen corresponding path program 14 times [2023-08-25 06:06:47,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:06:47,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954280451] [2023-08-25 06:06:47,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:47,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:06:47,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:47,888 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:47,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:06:47,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954280451] [2023-08-25 06:06:47,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954280451] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:06:47,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474616823] [2023-08-25 06:06:47,888 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 06:06:47,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:47,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:06:47,890 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:06:47,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-25 06:06:47,979 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 06:06:47,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:06:47,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-25 06:06:47,981 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:06:48,075 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:48,075 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:06:48,134 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 06:06:48,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474616823] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:06:48,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:06:48,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 16 [2023-08-25 06:06:48,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096425353] [2023-08-25 06:06:48,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:06:48,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-25 06:06:48,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:06:48,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-25 06:06:48,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2023-08-25 06:06:48,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-25 06:06:48,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 420 transitions, 7310 flow. Second operand has 16 states, 16 states have (on average 80.0625) internal successors, (1281), 16 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:48,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:06:48,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-25 06:06:48,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:06:49,372 INFO L124 PetriNetUnfolderBase]: 1916/4734 cut-off events. [2023-08-25 06:06:49,373 INFO L125 PetriNetUnfolderBase]: For 85099/86031 co-relation queries the response was YES. [2023-08-25 06:06:49,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27502 conditions, 4734 events. 1916/4734 cut-off events. For 85099/86031 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 40275 event pairs, 412 based on Foata normal form. 652/5190 useless extension candidates. Maximal degree in co-relation 27418. Up to 1066 conditions per place. [2023-08-25 06:06:49,418 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 148 selfloop transitions, 393 changer transitions 4/551 dead transitions. [2023-08-25 06:06:49,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 551 transitions, 10599 flow [2023-08-25 06:06:49,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-25 06:06:49,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-25 06:06:49,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1986 transitions. [2023-08-25 06:06:49,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40965346534653463 [2023-08-25 06:06:49,421 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1986 transitions. [2023-08-25 06:06:49,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1986 transitions. [2023-08-25 06:06:49,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:06:49,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1986 transitions. [2023-08-25 06:06:49,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 82.75) internal successors, (1986), 24 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 06:06:49,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 202.0) internal successors, (5050), 25 states have internal predecessors, (5050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:49,427 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 202.0) internal successors, (5050), 25 states have internal predecessors, (5050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:49,427 INFO L175 Difference]: Start difference. First operand has 237 places, 420 transitions, 7310 flow. Second operand 24 states and 1986 transitions. [2023-08-25 06:06:49,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 551 transitions, 10599 flow [2023-08-25 06:06:49,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 551 transitions, 10312 flow, removed 39 selfloop flow, removed 10 redundant places. [2023-08-25 06:06:49,790 INFO L231 Difference]: Finished difference. Result has 253 places, 506 transitions, 9938 flow [2023-08-25 06:06:49,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=7060, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=319, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=9938, PETRI_PLACES=253, PETRI_TRANSITIONS=506} [2023-08-25 06:06:49,791 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 218 predicate places. [2023-08-25 06:06:49,791 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 506 transitions, 9938 flow [2023-08-25 06:06:49,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 80.0625) internal successors, (1281), 16 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:49,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:06:49,792 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:06:49,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-25 06:06:49,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-08-25 06:06:49,998 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 06:06:49,998 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:06:49,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1261925113, now seen corresponding path program 15 times [2023-08-25 06:06:49,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:06:49,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197775947] [2023-08-25 06:06:49,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:49,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:06:50,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:50,095 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:50,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:06:50,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197775947] [2023-08-25 06:06:50,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197775947] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:06:50,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557787677] [2023-08-25 06:06:50,096 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 06:06:50,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:50,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:06:50,097 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:06:50,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-25 06:06:50,188 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-08-25 06:06:50,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:06:50,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-25 06:06:50,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:06:50,275 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:50,275 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:06:50,321 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 06:06:50,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557787677] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:06:50,322 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:06:50,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 16 [2023-08-25 06:06:50,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114840101] [2023-08-25 06:06:50,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:06:50,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-25 06:06:50,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:06:50,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-25 06:06:50,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-08-25 06:06:50,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-25 06:06:50,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 506 transitions, 9938 flow. Second operand has 16 states, 16 states have (on average 79.8125) internal successors, (1277), 16 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:50,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:06:50,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-25 06:06:50,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:06:51,589 INFO L124 PetriNetUnfolderBase]: 1899/4775 cut-off events. [2023-08-25 06:06:51,589 INFO L125 PetriNetUnfolderBase]: For 93589/94633 co-relation queries the response was YES. [2023-08-25 06:06:51,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28556 conditions, 4775 events. 1899/4775 cut-off events. For 93589/94633 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 41458 event pairs, 576 based on Foata normal form. 495/5070 useless extension candidates. Maximal degree in co-relation 28469. Up to 1539 conditions per place. [2023-08-25 06:06:51,639 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 209 selfloop transitions, 326 changer transitions 0/541 dead transitions. [2023-08-25 06:06:51,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 541 transitions, 11255 flow [2023-08-25 06:06:51,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-25 06:06:51,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-25 06:06:51,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1647 transitions. [2023-08-25 06:06:51,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40767326732673265 [2023-08-25 06:06:51,641 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1647 transitions. [2023-08-25 06:06:51,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1647 transitions. [2023-08-25 06:06:51,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:06:51,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1647 transitions. [2023-08-25 06:06:51,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 82.35) internal successors, (1647), 20 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:51,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 202.0) internal successors, (4242), 21 states have internal predecessors, (4242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:51,646 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 202.0) internal successors, (4242), 21 states have internal predecessors, (4242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:51,646 INFO L175 Difference]: Start difference. First operand has 253 places, 506 transitions, 9938 flow. Second operand 20 states and 1647 transitions. [2023-08-25 06:06:51,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 541 transitions, 11255 flow [2023-08-25 06:06:52,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 541 transitions, 10352 flow, removed 362 selfloop flow, removed 16 redundant places. [2023-08-25 06:06:52,044 INFO L231 Difference]: Finished difference. Result has 258 places, 508 transitions, 9763 flow [2023-08-25 06:06:52,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=9040, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=324, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=9763, PETRI_PLACES=258, PETRI_TRANSITIONS=508} [2023-08-25 06:06:52,045 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 223 predicate places. [2023-08-25 06:06:52,045 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 508 transitions, 9763 flow [2023-08-25 06:06:52,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 79.8125) internal successors, (1277), 16 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:52,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:06:52,046 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:06:52,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-25 06:06:52,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:52,251 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 06:06:52,252 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:06:52,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1064241971, now seen corresponding path program 16 times [2023-08-25 06:06:52,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:06:52,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853373186] [2023-08-25 06:06:52,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:52,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:06:52,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:52,337 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:52,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:06:52,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853373186] [2023-08-25 06:06:52,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853373186] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:06:52,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977606785] [2023-08-25 06:06:52,338 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 06:06:52,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:52,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:06:52,339 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:06:52,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-25 06:06:52,419 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 06:06:52,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:06:52,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-25 06:06:52,422 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:06:52,505 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:52,505 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:06:52,558 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-25 06:06:52,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977606785] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:06:52,558 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:06:52,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 16 [2023-08-25 06:06:52,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855923068] [2023-08-25 06:06:52,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:06:52,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-25 06:06:52,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:06:52,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-25 06:06:52,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-08-25 06:06:52,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-25 06:06:52,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 508 transitions, 9763 flow. Second operand has 16 states, 16 states have (on average 80.0625) internal successors, (1281), 16 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:52,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:06:52,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-25 06:06:52,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:06:53,865 INFO L124 PetriNetUnfolderBase]: 2059/5242 cut-off events. [2023-08-25 06:06:53,865 INFO L125 PetriNetUnfolderBase]: For 89045/89915 co-relation queries the response was YES. [2023-08-25 06:06:53,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30389 conditions, 5242 events. 2059/5242 cut-off events. For 89045/89915 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 46287 event pairs, 496 based on Foata normal form. 331/5359 useless extension candidates. Maximal degree in co-relation 30306. Up to 1179 conditions per place. [2023-08-25 06:06:53,922 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 314 selfloop transitions, 286 changer transitions 7/613 dead transitions. [2023-08-25 06:06:53,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 613 transitions, 12352 flow [2023-08-25 06:06:53,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-25 06:06:53,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-25 06:06:53,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1654 transitions. [2023-08-25 06:06:53,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4094059405940594 [2023-08-25 06:06:53,925 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1654 transitions. [2023-08-25 06:06:53,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1654 transitions. [2023-08-25 06:06:53,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:06:53,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1654 transitions. [2023-08-25 06:06:53,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 82.7) internal successors, (1654), 20 states have internal predecessors, (1654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:53,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 202.0) internal successors, (4242), 21 states have internal predecessors, (4242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:53,930 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 202.0) internal successors, (4242), 21 states have internal predecessors, (4242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:53,931 INFO L175 Difference]: Start difference. First operand has 258 places, 508 transitions, 9763 flow. Second operand 20 states and 1654 transitions. [2023-08-25 06:06:53,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 613 transitions, 12352 flow [2023-08-25 06:06:54,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 613 transitions, 11633 flow, removed 10 selfloop flow, removed 18 redundant places. [2023-08-25 06:06:54,337 INFO L231 Difference]: Finished difference. Result has 268 places, 555 transitions, 10929 flow [2023-08-25 06:06:54,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=9101, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=238, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=10929, PETRI_PLACES=268, PETRI_TRANSITIONS=555} [2023-08-25 06:06:54,338 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 233 predicate places. [2023-08-25 06:06:54,338 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 555 transitions, 10929 flow [2023-08-25 06:06:54,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 80.0625) internal successors, (1281), 16 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:54,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:06:54,338 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:06:54,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-25 06:06:54,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:54,543 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 06:06:54,543 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:06:54,543 INFO L85 PathProgramCache]: Analyzing trace with hash -19662061, now seen corresponding path program 17 times [2023-08-25 06:06:54,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:06:54,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067009736] [2023-08-25 06:06:54,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:54,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:06:54,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:54,707 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:54,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:06:54,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067009736] [2023-08-25 06:06:54,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067009736] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:06:54,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394706558] [2023-08-25 06:06:54,707 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 06:06:54,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:54,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:06:54,708 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:06:54,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-25 06:06:54,792 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-25 06:06:54,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:06:54,792 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-25 06:06:54,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:06:54,873 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:54,873 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:06:54,934 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:54,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394706558] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:06:54,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:06:54,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-08-25 06:06:54,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329702517] [2023-08-25 06:06:54,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:06:54,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-25 06:06:54,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:06:54,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-25 06:06:54,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2023-08-25 06:06:54,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-25 06:06:54,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 555 transitions, 10929 flow. Second operand has 18 states, 18 states have (on average 79.77777777777777) internal successors, (1436), 18 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:54,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:06:54,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-25 06:06:54,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:06:56,401 INFO L124 PetriNetUnfolderBase]: 2130/5476 cut-off events. [2023-08-25 06:06:56,402 INFO L125 PetriNetUnfolderBase]: For 93844/94613 co-relation queries the response was YES. [2023-08-25 06:06:56,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31981 conditions, 5476 events. 2130/5476 cut-off events. For 93844/94613 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 48860 event pairs, 505 based on Foata normal form. 274/5534 useless extension candidates. Maximal degree in co-relation 31892. Up to 1230 conditions per place. [2023-08-25 06:06:56,475 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 323 selfloop transitions, 319 changer transitions 0/648 dead transitions. [2023-08-25 06:06:56,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 648 transitions, 13014 flow [2023-08-25 06:06:56,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-25 06:06:56,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-08-25 06:06:56,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2392 transitions. [2023-08-25 06:06:56,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083304882212359 [2023-08-25 06:06:56,479 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2392 transitions. [2023-08-25 06:06:56,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2392 transitions. [2023-08-25 06:06:56,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:06:56,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2392 transitions. [2023-08-25 06:06:56,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 82.48275862068965) internal successors, (2392), 29 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:56,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 202.0) internal successors, (6060), 30 states have internal predecessors, (6060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:56,488 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 202.0) internal successors, (6060), 30 states have internal predecessors, (6060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:56,488 INFO L175 Difference]: Start difference. First operand has 268 places, 555 transitions, 10929 flow. Second operand 29 states and 2392 transitions. [2023-08-25 06:06:56,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 648 transitions, 13014 flow [2023-08-25 06:06:57,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 648 transitions, 12732 flow, removed 88 selfloop flow, removed 7 redundant places. [2023-08-25 06:06:57,175 INFO L231 Difference]: Finished difference. Result has 293 places, 582 transitions, 11976 flow [2023-08-25 06:06:57,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=10677, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=294, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=11976, PETRI_PLACES=293, PETRI_TRANSITIONS=582} [2023-08-25 06:06:57,176 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 258 predicate places. [2023-08-25 06:06:57,176 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 582 transitions, 11976 flow [2023-08-25 06:06:57,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 79.77777777777777) internal successors, (1436), 18 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:57,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:06:57,176 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:06:57,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-25 06:06:57,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:57,383 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 06:06:57,383 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:06:57,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1368815591, now seen corresponding path program 18 times [2023-08-25 06:06:57,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:06:57,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650468740] [2023-08-25 06:06:57,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:57,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:06:57,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:57,486 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:57,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:06:57,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650468740] [2023-08-25 06:06:57,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650468740] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:06:57,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172512879] [2023-08-25 06:06:57,486 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 06:06:57,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:57,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:06:57,503 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:06:57,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-25 06:06:57,631 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-08-25 06:06:57,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:06:57,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-25 06:06:57,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:06:57,739 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:57,740 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:06:57,798 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:57,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172512879] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:06:57,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:06:57,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 15 [2023-08-25 06:06:57,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768184845] [2023-08-25 06:06:57,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:06:57,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-25 06:06:57,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:06:57,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-25 06:06:57,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-08-25 06:06:57,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-25 06:06:57,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 582 transitions, 11976 flow. Second operand has 15 states, 15 states have (on average 80.13333333333334) internal successors, (1202), 15 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:57,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:06:57,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-25 06:06:57,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:06:59,889 INFO L124 PetriNetUnfolderBase]: 2573/6574 cut-off events. [2023-08-25 06:06:59,889 INFO L125 PetriNetUnfolderBase]: For 124786/125824 co-relation queries the response was YES. [2023-08-25 06:06:59,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39469 conditions, 6574 events. 2573/6574 cut-off events. For 124786/125824 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 60500 event pairs, 548 based on Foata normal form. 662/6994 useless extension candidates. Maximal degree in co-relation 39375. Up to 1483 conditions per place. [2023-08-25 06:06:59,953 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 196 selfloop transitions, 555 changer transitions 0/757 dead transitions. [2023-08-25 06:06:59,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 757 transitions, 16050 flow [2023-08-25 06:06:59,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-25 06:06:59,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-25 06:06:59,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2146 transitions. [2023-08-25 06:06:59,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4086062452399086 [2023-08-25 06:06:59,956 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2146 transitions. [2023-08-25 06:06:59,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2146 transitions. [2023-08-25 06:06:59,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:06:59,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2146 transitions. [2023-08-25 06:06:59,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 82.53846153846153) internal successors, (2146), 26 states have internal predecessors, (2146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:59,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 202.0) internal successors, (5454), 27 states have internal predecessors, (5454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:59,962 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 202.0) internal successors, (5454), 27 states have internal predecessors, (5454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:59,962 INFO L175 Difference]: Start difference. First operand has 293 places, 582 transitions, 11976 flow. Second operand 26 states and 2146 transitions. [2023-08-25 06:06:59,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 757 transitions, 16050 flow [2023-08-25 06:07:00,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 757 transitions, 15653 flow, removed 87 selfloop flow, removed 9 redundant places. [2023-08-25 06:07:00,744 INFO L231 Difference]: Finished difference. Result has 317 places, 706 transitions, 15622 flow [2023-08-25 06:07:00,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=11603, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=448, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=15622, PETRI_PLACES=317, PETRI_TRANSITIONS=706} [2023-08-25 06:07:00,745 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 282 predicate places. [2023-08-25 06:07:00,745 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 706 transitions, 15622 flow [2023-08-25 06:07:00,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 80.13333333333334) internal successors, (1202), 15 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:07:00,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:07:00,745 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:07:00,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-25 06:07:00,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-08-25 06:07:00,952 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 06:07:00,952 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:07:00,953 INFO L85 PathProgramCache]: Analyzing trace with hash -22953433, now seen corresponding path program 19 times [2023-08-25 06:07:00,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:07:00,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275758667] [2023-08-25 06:07:00,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:07:00,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:07:00,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:07:01,033 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:07:01,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:07:01,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275758667] [2023-08-25 06:07:01,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275758667] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:07:01,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717087368] [2023-08-25 06:07:01,033 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 06:07:01,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:07:01,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:07:01,034 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:07:01,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-25 06:07:01,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:07:01,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-25 06:07:01,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:07:01,200 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:07:01,201 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:07:01,259 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:07:01,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717087368] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:07:01,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:07:01,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2023-08-25 06:07:01,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057426958] [2023-08-25 06:07:01,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:07:01,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-25 06:07:01,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:07:01,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-25 06:07:01,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2023-08-25 06:07:01,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-25 06:07:01,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 706 transitions, 15622 flow. Second operand has 14 states, 14 states have (on average 80.14285714285714) internal successors, (1122), 14 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:07:01,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:07:01,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-25 06:07:01,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:07:03,365 INFO L124 PetriNetUnfolderBase]: 3277/8491 cut-off events. [2023-08-25 06:07:03,365 INFO L125 PetriNetUnfolderBase]: For 186204/187380 co-relation queries the response was YES. [2023-08-25 06:07:03,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55205 conditions, 8491 events. 3277/8491 cut-off events. For 186204/187380 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 81691 event pairs, 654 based on Foata normal form. 624/8857 useless extension candidates. Maximal degree in co-relation 55102. Up to 2235 conditions per place. [2023-08-25 06:07:03,452 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 590 selfloop transitions, 360 changer transitions 10/966 dead transitions. [2023-08-25 06:07:03,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 966 transitions, 23212 flow [2023-08-25 06:07:03,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-25 06:07:03,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-25 06:07:03,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1091 transitions. [2023-08-25 06:07:03,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41546077684691546 [2023-08-25 06:07:03,455 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1091 transitions. [2023-08-25 06:07:03,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1091 transitions. [2023-08-25 06:07:03,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:07:03,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1091 transitions. [2023-08-25 06:07:03,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 83.92307692307692) internal successors, (1091), 13 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:07:03,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 202.0) internal successors, (2828), 14 states have internal predecessors, (2828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:07:03,458 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 202.0) internal successors, (2828), 14 states have internal predecessors, (2828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:07:03,458 INFO L175 Difference]: Start difference. First operand has 317 places, 706 transitions, 15622 flow. Second operand 13 states and 1091 transitions. [2023-08-25 06:07:03,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 966 transitions, 23212 flow [2023-08-25 06:07:05,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 966 transitions, 22813 flow, removed 164 selfloop flow, removed 9 redundant places. [2023-08-25 06:07:05,032 INFO L231 Difference]: Finished difference. Result has 328 places, 883 transitions, 21335 flow [2023-08-25 06:07:05,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=15304, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=706, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=21335, PETRI_PLACES=328, PETRI_TRANSITIONS=883} [2023-08-25 06:07:05,033 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 293 predicate places. [2023-08-25 06:07:05,033 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 883 transitions, 21335 flow [2023-08-25 06:07:05,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 80.14285714285714) internal successors, (1122), 14 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:07:05,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:07:05,034 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:07:05,038 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-08-25 06:07:05,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-08-25 06:07:05,238 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 06:07:05,238 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:07:05,239 INFO L85 PathProgramCache]: Analyzing trace with hash -361487629, now seen corresponding path program 20 times [2023-08-25 06:07:05,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:07:05,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028795492] [2023-08-25 06:07:05,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:07:05,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:07:05,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:07:05,320 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:07:05,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:07:05,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028795492] [2023-08-25 06:07:05,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028795492] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:07:05,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289015965] [2023-08-25 06:07:05,321 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 06:07:05,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:07:05,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:07:05,322 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:07:05,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-25 06:07:05,413 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 06:07:05,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:07:05,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-25 06:07:05,415 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:07:05,504 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:07:05,505 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:07:05,557 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:07:05,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289015965] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:07:05,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:07:05,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2023-08-25 06:07:05,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987166150] [2023-08-25 06:07:05,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:07:05,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-25 06:07:05,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:07:05,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-25 06:07:05,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2023-08-25 06:07:05,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-25 06:07:05,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 883 transitions, 21335 flow. Second operand has 16 states, 16 states have (on average 79.9375) internal successors, (1279), 16 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) [2023-08-25 06:07:05,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:07:05,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-25 06:07:05,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:07:08,795 INFO L124 PetriNetUnfolderBase]: 3741/9729 cut-off events. [2023-08-25 06:07:08,795 INFO L125 PetriNetUnfolderBase]: For 239131/240203 co-relation queries the response was YES. [2023-08-25 06:07:08,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66323 conditions, 9729 events. 3741/9729 cut-off events. For 239131/240203 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 96693 event pairs, 977 based on Foata normal form. 388/9795 useless extension candidates. Maximal degree in co-relation 66211. Up to 2340 conditions per place. [2023-08-25 06:07:08,917 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 582 selfloop transitions, 486 changer transitions 1/1075 dead transitions. [2023-08-25 06:07:08,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 1075 transitions, 27460 flow [2023-08-25 06:07:08,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-25 06:07:08,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-25 06:07:08,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1575 transitions. [2023-08-25 06:07:08,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41036998436685773 [2023-08-25 06:07:08,923 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1575 transitions. [2023-08-25 06:07:08,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1575 transitions. [2023-08-25 06:07:08,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:07:08,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1575 transitions. [2023-08-25 06:07:08,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 82.89473684210526) internal successors, (1575), 19 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:07:08,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 202.0) internal successors, (4040), 20 states have internal predecessors, (4040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:07:08,928 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 202.0) internal successors, (4040), 20 states have internal predecessors, (4040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:07:08,928 INFO L175 Difference]: Start difference. First operand has 328 places, 883 transitions, 21335 flow. Second operand 19 states and 1575 transitions. [2023-08-25 06:07:08,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 1075 transitions, 27460 flow [2023-08-25 06:07:11,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 1075 transitions, 27319 flow, removed 61 selfloop flow, removed 2 redundant places. [2023-08-25 06:07:12,007 INFO L231 Difference]: Finished difference. Result has 352 places, 1004 transitions, 26139 flow [2023-08-25 06:07:12,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=21187, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=882, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=363, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=26139, PETRI_PLACES=352, PETRI_TRANSITIONS=1004} [2023-08-25 06:07:12,010 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 317 predicate places. [2023-08-25 06:07:12,010 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 1004 transitions, 26139 flow [2023-08-25 06:07:12,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 79.9375) internal successors, (1279), 16 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) [2023-08-25 06:07:12,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:07:12,011 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:07:12,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-08-25 06:07:12,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-25 06:07:12,215 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 06:07:12,216 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:07:12,216 INFO L85 PathProgramCache]: Analyzing trace with hash -705600221, now seen corresponding path program 21 times [2023-08-25 06:07:12,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:07:12,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050316752] [2023-08-25 06:07:12,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:07:12,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:07:12,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:07:12,291 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:07:12,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:07:12,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050316752] [2023-08-25 06:07:12,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050316752] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:07:12,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659784889] [2023-08-25 06:07:12,292 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 06:07:12,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:07:12,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:07:12,293 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:07:12,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-08-25 06:07:12,404 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-08-25 06:07:12,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:07:12,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-25 06:07:12,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:07:12,499 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:07:12,499 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:07:12,556 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:07:12,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659784889] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:07:12,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:07:12,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2023-08-25 06:07:12,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071893052] [2023-08-25 06:07:12,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:07:12,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-25 06:07:12,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:07:12,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-25 06:07:12,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2023-08-25 06:07:12,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-25 06:07:12,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 1004 transitions, 26139 flow. Second operand has 15 states, 15 states have (on average 80.06666666666666) internal successors, (1201), 15 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:07:12,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:07:12,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-25 06:07:12,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:07:16,102 INFO L124 PetriNetUnfolderBase]: 3990/10119 cut-off events. [2023-08-25 06:07:16,103 INFO L125 PetriNetUnfolderBase]: For 293529/294666 co-relation queries the response was YES. [2023-08-25 06:07:16,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73557 conditions, 10119 events. 3990/10119 cut-off events. For 293529/294666 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 99718 event pairs, 868 based on Foata normal form. 784/10512 useless extension candidates. Maximal degree in co-relation 73437. Up to 2128 conditions per place. [2023-08-25 06:07:16,354 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 245 selfloop transitions, 887 changer transitions 1/1139 dead transitions. [2023-08-25 06:07:16,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 1139 transitions, 30814 flow [2023-08-25 06:07:16,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-25 06:07:16,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-25 06:07:16,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1990 transitions. [2023-08-25 06:07:16,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4104785478547855 [2023-08-25 06:07:16,356 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1990 transitions. [2023-08-25 06:07:16,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1990 transitions. [2023-08-25 06:07:16,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:07:16,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1990 transitions. [2023-08-25 06:07:16,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 82.91666666666667) internal successors, (1990), 24 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 06:07:16,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 202.0) internal successors, (5050), 25 states have internal predecessors, (5050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:07:16,361 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 202.0) internal successors, (5050), 25 states have internal predecessors, (5050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:07:16,362 INFO L175 Difference]: Start difference. First operand has 352 places, 1004 transitions, 26139 flow. Second operand 24 states and 1990 transitions. [2023-08-25 06:07:16,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 1139 transitions, 30814 flow [2023-08-25 06:07:19,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 1139 transitions, 30298 flow, removed 84 selfloop flow, removed 7 redundant places. [2023-08-25 06:07:19,691 INFO L231 Difference]: Finished difference. Result has 373 places, 1086 transitions, 30090 flow [2023-08-25 06:07:19,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=25667, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1004, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=815, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=30090, PETRI_PLACES=373, PETRI_TRANSITIONS=1086} [2023-08-25 06:07:19,693 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 338 predicate places. [2023-08-25 06:07:19,693 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 1086 transitions, 30090 flow [2023-08-25 06:07:19,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 80.06666666666666) internal successors, (1201), 15 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:07:19,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:07:19,698 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:07:19,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-08-25 06:07:19,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:07:19,907 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 06:07:19,907 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:07:19,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1144878773, now seen corresponding path program 22 times [2023-08-25 06:07:19,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:07:19,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657179895] [2023-08-25 06:07:19,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:07:19,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:07:19,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:07:19,980 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:07:19,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:07:19,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657179895] [2023-08-25 06:07:19,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657179895] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:07:19,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692775807] [2023-08-25 06:07:19,981 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 06:07:19,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:07:19,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:07:19,989 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:07:19,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-08-25 06:07:20,075 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 06:07:20,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:07:20,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-25 06:07:20,076 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:07:20,145 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:07:20,145 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:07:20,194 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:07:20,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692775807] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:07:20,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:07:20,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2023-08-25 06:07:20,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053768248] [2023-08-25 06:07:20,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:07:20,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-25 06:07:20,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:07:20,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-25 06:07:20,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2023-08-25 06:07:20,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-25 06:07:20,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 1086 transitions, 30090 flow. Second operand has 15 states, 15 states have (on average 79.8) internal successors, (1197), 15 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:07:20,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:07:20,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-25 06:07:20,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:07:23,395 INFO L124 PetriNetUnfolderBase]: 3972/10348 cut-off events. [2023-08-25 06:07:23,395 INFO L125 PetriNetUnfolderBase]: For 342260/343472 co-relation queries the response was YES. [2023-08-25 06:07:23,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76656 conditions, 10348 events. 3972/10348 cut-off events. For 342260/343472 co-relation queries the response was YES. Maximal size of possible extension queue 578. Compared 105039 event pairs, 1320 based on Foata normal form. 656/10674 useless extension candidates. Maximal degree in co-relation 76531. Up to 3811 conditions per place. [2023-08-25 06:07:23,535 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 419 selfloop transitions, 705 changer transitions 3/1133 dead transitions. [2023-08-25 06:07:23,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 1133 transitions, 32754 flow [2023-08-25 06:07:23,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-25 06:07:23,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-25 06:07:23,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1731 transitions. [2023-08-25 06:07:23,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40806223479490805 [2023-08-25 06:07:23,538 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1731 transitions. [2023-08-25 06:07:23,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1731 transitions. [2023-08-25 06:07:23,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:07:23,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1731 transitions. [2023-08-25 06:07:23,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 82.42857142857143) internal successors, (1731), 21 states have internal predecessors, (1731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:07:23,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 202.0) internal successors, (4444), 22 states have internal predecessors, (4444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:07:23,542 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 202.0) internal successors, (4444), 22 states have internal predecessors, (4444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:07:23,542 INFO L175 Difference]: Start difference. First operand has 373 places, 1086 transitions, 30090 flow. Second operand 21 states and 1731 transitions. [2023-08-25 06:07:23,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 1133 transitions, 32754 flow [2023-08-25 06:07:26,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 1133 transitions, 30965 flow, removed 395 selfloop flow, removed 21 redundant places. [2023-08-25 06:07:26,412 INFO L231 Difference]: Finished difference. Result has 374 places, 1086 transitions, 29765 flow [2023-08-25 06:07:26,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=28305, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1086, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=704, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=29765, PETRI_PLACES=374, PETRI_TRANSITIONS=1086} [2023-08-25 06:07:26,413 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 339 predicate places. [2023-08-25 06:07:26,413 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 1086 transitions, 29765 flow [2023-08-25 06:07:26,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 79.8) internal successors, (1197), 15 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:07:26,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:07:26,414 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:07:26,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-08-25 06:07:26,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:07:26,619 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 06:07:26,619 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:07:26,619 INFO L85 PathProgramCache]: Analyzing trace with hash -808380091, now seen corresponding path program 23 times [2023-08-25 06:07:26,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:07:26,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010403709] [2023-08-25 06:07:26,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:07:26,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:07:26,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:07:26,709 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:07:26,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:07:26,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010403709] [2023-08-25 06:07:26,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010403709] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:07:26,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024282439] [2023-08-25 06:07:26,710 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 06:07:26,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:07:26,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:07:26,733 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:07:26,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-08-25 06:07:26,827 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-25 06:07:26,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:07:26,828 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-25 06:07:26,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:07:26,916 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:07:26,916 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:07:26,978 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:07:26,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024282439] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:07:26,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:07:26,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2023-08-25 06:07:26,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342648745] [2023-08-25 06:07:26,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:07:26,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-25 06:07:26,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:07:26,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-25 06:07:26,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-08-25 06:07:26,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-25 06:07:26,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 1086 transitions, 29765 flow. Second operand has 15 states, 15 states have (on average 80.06666666666666) internal successors, (1201), 15 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:07:26,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:07:26,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-25 06:07:26,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:07:30,534 INFO L124 PetriNetUnfolderBase]: 4156/10806 cut-off events. [2023-08-25 06:07:30,534 INFO L125 PetriNetUnfolderBase]: For 341309/342405 co-relation queries the response was YES. [2023-08-25 06:07:30,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79323 conditions, 10806 events. 4156/10806 cut-off events. For 341309/342405 co-relation queries the response was YES. Maximal size of possible extension queue 594. Compared 109438 event pairs, 947 based on Foata normal form. 454/10888 useless extension candidates. Maximal degree in co-relation 79205. Up to 2323 conditions per place. [2023-08-25 06:07:30,689 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 491 selfloop transitions, 699 changer transitions 1/1197 dead transitions. [2023-08-25 06:07:30,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 1197 transitions, 33818 flow [2023-08-25 06:07:30,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-25 06:07:30,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-25 06:07:30,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1740 transitions. [2023-08-25 06:07:30,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4101838755304102 [2023-08-25 06:07:30,705 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1740 transitions. [2023-08-25 06:07:30,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1740 transitions. [2023-08-25 06:07:30,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:07:30,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1740 transitions. [2023-08-25 06:07:30,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 82.85714285714286) internal successors, (1740), 21 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:07:30,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 202.0) internal successors, (4444), 22 states have internal predecessors, (4444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:07:30,814 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 202.0) internal successors, (4444), 22 states have internal predecessors, (4444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:07:30,814 INFO L175 Difference]: Start difference. First operand has 374 places, 1086 transitions, 29765 flow. Second operand 21 states and 1740 transitions. [2023-08-25 06:07:30,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 1197 transitions, 33818 flow [2023-08-25 06:07:33,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 1197 transitions, 32392 flow, removed 3 selfloop flow, removed 16 redundant places. [2023-08-25 06:07:33,801 INFO L231 Difference]: Finished difference. Result has 382 places, 1136 transitions, 31650 flow [2023-08-25 06:07:33,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=28385, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1085, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=647, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=31650, PETRI_PLACES=382, PETRI_TRANSITIONS=1136} [2023-08-25 06:07:33,802 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 347 predicate places. [2023-08-25 06:07:33,803 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 1136 transitions, 31650 flow [2023-08-25 06:07:33,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 80.06666666666666) internal successors, (1201), 15 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:07:33,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:07:33,803 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:07:33,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-08-25 06:07:34,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-08-25 06:07:34,009 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 06:07:34,009 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:07:34,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1696315283, now seen corresponding path program 24 times [2023-08-25 06:07:34,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:07:34,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486944463] [2023-08-25 06:07:34,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:07:34,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:07:34,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:07:34,154 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:07:34,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:07:34,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486944463] [2023-08-25 06:07:34,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486944463] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:07:34,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485452958] [2023-08-25 06:07:34,155 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 06:07:34,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:07:34,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:07:34,157 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:07:34,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-08-25 06:07:34,257 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-25 06:07:34,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:07:34,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-25 06:07:34,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:07:34,343 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:07:34,343 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:07:34,407 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:07:34,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485452958] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:07:34,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:07:34,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-08-25 06:07:34,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957640769] [2023-08-25 06:07:34,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:07:34,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-25 06:07:34,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:07:34,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-25 06:07:34,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2023-08-25 06:07:34,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-25 06:07:34,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 1136 transitions, 31650 flow. Second operand has 20 states, 20 states have (on average 79.7) internal successors, (1594), 20 states have internal predecessors, (1594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:07:34,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:07:34,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-25 06:07:34,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:07:38,529 INFO L124 PetriNetUnfolderBase]: 4272/11178 cut-off events. [2023-08-25 06:07:38,529 INFO L125 PetriNetUnfolderBase]: For 381241/382671 co-relation queries the response was YES. [2023-08-25 06:07:38,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82578 conditions, 11178 events. 4272/11178 cut-off events. For 381241/382671 co-relation queries the response was YES. Maximal size of possible extension queue 643. Compared 114327 event pairs, 1864 based on Foata normal form. 540/11386 useless extension candidates. Maximal degree in co-relation 82456. Up to 6326 conditions per place. [2023-08-25 06:07:38,701 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 1086 selfloop transitions, 149 changer transitions 10/1251 dead transitions. [2023-08-25 06:07:38,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 1251 transitions, 36239 flow [2023-08-25 06:07:38,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-08-25 06:07:38,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-08-25 06:07:38,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2484 transitions. [2023-08-25 06:07:38,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4099009900990099 [2023-08-25 06:07:38,704 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2484 transitions. [2023-08-25 06:07:38,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2484 transitions. [2023-08-25 06:07:38,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:07:38,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2484 transitions. [2023-08-25 06:07:38,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 82.8) internal successors, (2484), 30 states have internal predecessors, (2484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:07:38,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 202.0) internal successors, (6262), 31 states have internal predecessors, (6262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:07:38,710 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 202.0) internal successors, (6262), 31 states have internal predecessors, (6262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:07:38,710 INFO L175 Difference]: Start difference. First operand has 382 places, 1136 transitions, 31650 flow. Second operand 30 states and 2484 transitions. [2023-08-25 06:07:38,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 1251 transitions, 36239 flow [2023-08-25 06:07:42,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 1251 transitions, 35562 flow, removed 90 selfloop flow, removed 11 redundant places. [2023-08-25 06:07:42,266 INFO L231 Difference]: Finished difference. Result has 417 places, 1193 transitions, 33216 flow [2023-08-25 06:07:42,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=31009, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1034, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=33216, PETRI_PLACES=417, PETRI_TRANSITIONS=1193} [2023-08-25 06:07:42,267 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 382 predicate places. [2023-08-25 06:07:42,267 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 1193 transitions, 33216 flow [2023-08-25 06:07:42,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 79.7) internal successors, (1594), 20 states have internal predecessors, (1594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:07:42,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:07:42,267 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:07:42,272 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-08-25 06:07:42,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-08-25 06:07:42,473 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 06:07:42,473 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:07:42,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1750282451, now seen corresponding path program 25 times [2023-08-25 06:07:42,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:07:42,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778761712] [2023-08-25 06:07:42,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:07:42,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:07:42,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:07:42,540 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:07:42,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:07:42,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778761712] [2023-08-25 06:07:42,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778761712] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:07:42,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612462348] [2023-08-25 06:07:42,541 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 06:07:42,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:07:42,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:07:42,542 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:07:42,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-08-25 06:07:42,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:07:42,648 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-25 06:07:42,649 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:07:42,740 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:07:42,740 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:07:42,788 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:07:42,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612462348] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:07:42,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:07:42,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 17 [2023-08-25 06:07:42,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566266303] [2023-08-25 06:07:42,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:07:42,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-25 06:07:42,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:07:42,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-25 06:07:42,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2023-08-25 06:07:42,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-25 06:07:42,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 1193 transitions, 33216 flow. Second operand has 17 states, 17 states have (on average 79.76470588235294) internal successors, (1356), 17 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:07:42,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:07:42,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-25 06:07:42,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:07:46,658 INFO L124 PetriNetUnfolderBase]: 4308/11262 cut-off events. [2023-08-25 06:07:46,658 INFO L125 PetriNetUnfolderBase]: For 369364/370796 co-relation queries the response was YES. [2023-08-25 06:07:46,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82359 conditions, 11262 events. 4308/11262 cut-off events. For 369364/370796 co-relation queries the response was YES. Maximal size of possible extension queue 657. Compared 115305 event pairs, 1882 based on Foata normal form. 386/11304 useless extension candidates. Maximal degree in co-relation 82221. Up to 6420 conditions per place. [2023-08-25 06:07:46,823 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 1078 selfloop transitions, 144 changer transitions 3/1231 dead transitions. [2023-08-25 06:07:46,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 1231 transitions, 36281 flow [2023-08-25 06:07:46,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-25 06:07:46,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-25 06:07:46,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1320 transitions. [2023-08-25 06:07:46,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4084158415841584 [2023-08-25 06:07:46,825 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1320 transitions. [2023-08-25 06:07:46,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1320 transitions. [2023-08-25 06:07:46,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:07:46,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1320 transitions. [2023-08-25 06:07:46,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 82.5) internal successors, (1320), 16 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:07:46,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 202.0) internal successors, (3434), 17 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) [2023-08-25 06:07:46,828 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 202.0) internal successors, (3434), 17 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) [2023-08-25 06:07:46,828 INFO L175 Difference]: Start difference. First operand has 417 places, 1193 transitions, 33216 flow. Second operand 16 states and 1320 transitions. [2023-08-25 06:07:46,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 1231 transitions, 36281 flow [2023-08-25 06:07:50,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 1231 transitions, 34882 flow, removed 590 selfloop flow, removed 9 redundant places. [2023-08-25 06:07:50,719 INFO L231 Difference]: Finished difference. Result has 424 places, 1207 transitions, 32537 flow [2023-08-25 06:07:50,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=31887, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1062, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=32537, PETRI_PLACES=424, PETRI_TRANSITIONS=1207} [2023-08-25 06:07:50,720 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 389 predicate places. [2023-08-25 06:07:50,720 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 1207 transitions, 32537 flow [2023-08-25 06:07:50,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 79.76470588235294) internal successors, (1356), 17 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:07:50,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:07:50,720 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:07:50,725 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-08-25 06:07:50,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:07:50,925 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 06:07:50,925 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:07:50,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1108316882, now seen corresponding path program 26 times [2023-08-25 06:07:50,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:07:50,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656807555] [2023-08-25 06:07:50,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:07:50,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:07:50,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:07:51,027 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:07:51,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:07:51,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656807555] [2023-08-25 06:07:51,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656807555] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:07:51,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351161477] [2023-08-25 06:07:51,027 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 06:07:51,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:07:51,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:07:51,028 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:07:51,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-08-25 06:07:51,128 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 06:07:51,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:07:51,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-25 06:07:51,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:07:51,197 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:07:51,198 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:07:51,254 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:07:51,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351161477] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:07:51,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:07:51,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2023-08-25 06:07:51,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464959521] [2023-08-25 06:07:51,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:07:51,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 06:07:51,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:07:51,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 06:07:51,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-25 06:07:51,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 202 [2023-08-25 06:07:51,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 1207 transitions, 32537 flow. Second operand has 6 states, 6 states have (on average 92.83333333333333) internal successors, (557), 6 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:07:51,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:07:51,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 202 [2023-08-25 06:07:51,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:07:56,123 INFO L124 PetriNetUnfolderBase]: 5754/14615 cut-off events. [2023-08-25 06:07:56,124 INFO L125 PetriNetUnfolderBase]: For 460253/462243 co-relation queries the response was YES. [2023-08-25 06:07:56,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104982 conditions, 14615 events. 5754/14615 cut-off events. For 460253/462243 co-relation queries the response was YES. Maximal size of possible extension queue 833. Compared 155298 event pairs, 1160 based on Foata normal form. 712/14809 useless extension candidates. Maximal degree in co-relation 104845. Up to 5327 conditions per place. [2023-08-25 06:07:56,448 INFO L140 encePairwiseOnDemand]: 198/202 looper letters, 1132 selfloop transitions, 501 changer transitions 110/1757 dead transitions. [2023-08-25 06:07:56,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 1757 transitions, 49461 flow [2023-08-25 06:07:56,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 06:07:56,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 06:07:56,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 597 transitions. [2023-08-25 06:07:56,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49257425742574257 [2023-08-25 06:07:56,450 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 597 transitions. [2023-08-25 06:07:56,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 597 transitions. [2023-08-25 06:07:56,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:07:56,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 597 transitions. [2023-08-25 06:07:56,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 99.5) internal successors, (597), 6 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:07:56,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 202.0) internal successors, (1414), 7 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:07:56,452 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 202.0) internal successors, (1414), 7 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:07:56,452 INFO L175 Difference]: Start difference. First operand has 424 places, 1207 transitions, 32537 flow. Second operand 6 states and 597 transitions. [2023-08-25 06:07:56,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 1757 transitions, 49461 flow [2023-08-25 06:08:02,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 1757 transitions, 49121 flow, removed 70 selfloop flow, removed 8 redundant places. [2023-08-25 06:08:02,724 INFO L231 Difference]: Finished difference. Result has 425 places, 1473 transitions, 40067 flow [2023-08-25 06:08:02,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=32330, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=227, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=716, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=40067, PETRI_PLACES=425, PETRI_TRANSITIONS=1473} [2023-08-25 06:08:02,725 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 390 predicate places. [2023-08-25 06:08:02,725 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 1473 transitions, 40067 flow [2023-08-25 06:08:02,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 92.83333333333333) internal successors, (557), 6 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:08:02,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:08:02,725 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:08:02,731 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-08-25 06:08:02,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:08:02,931 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 06:08:02,931 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:08:02,931 INFO L85 PathProgramCache]: Analyzing trace with hash -2067439914, now seen corresponding path program 27 times [2023-08-25 06:08:02,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:08:02,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391736756] [2023-08-25 06:08:02,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:08:02,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:08:02,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:08:03,027 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 7 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:08:03,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:08:03,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391736756] [2023-08-25 06:08:03,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391736756] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:08:03,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228921285] [2023-08-25 06:08:03,028 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 06:08:03,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:08:03,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:08:03,029 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:08:03,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-08-25 06:08:03,160 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-08-25 06:08:03,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:08:03,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-25 06:08:03,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:08:03,280 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:08:03,280 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:08:03,354 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 11 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 06:08:03,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228921285] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:08:03,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:08:03,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 23 [2023-08-25 06:08:03,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811746001] [2023-08-25 06:08:03,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:08:03,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-25 06:08:03,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:08:03,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-25 06:08:03,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2023-08-25 06:08:03,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-25 06:08:03,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 1473 transitions, 40067 flow. Second operand has 23 states, 23 states have (on average 79.56521739130434) internal successors, (1830), 23 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:08:03,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:08:03,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-25 06:08:03,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:08:11,096 INFO L124 PetriNetUnfolderBase]: 6918/17799 cut-off events. [2023-08-25 06:08:11,096 INFO L125 PetriNetUnfolderBase]: For 637020/640464 co-relation queries the response was YES. [2023-08-25 06:08:11,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132226 conditions, 17799 events. 6918/17799 cut-off events. For 637020/640464 co-relation queries the response was YES. Maximal size of possible extension queue 1016. Compared 194678 event pairs, 1565 based on Foata normal form. 2197/19401 useless extension candidates. Maximal degree in co-relation 132086. Up to 3948 conditions per place. [2023-08-25 06:08:11,416 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 616 selfloop transitions, 1247 changer transitions 31/1900 dead transitions. [2023-08-25 06:08:11,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 1900 transitions, 54741 flow [2023-08-25 06:08:11,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-08-25 06:08:11,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-08-25 06:08:11,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 3056 transitions. [2023-08-25 06:08:11,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4088841316564089 [2023-08-25 06:08:11,419 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 3056 transitions. [2023-08-25 06:08:11,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 3056 transitions. [2023-08-25 06:08:11,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:08:11,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 3056 transitions. [2023-08-25 06:08:11,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 82.5945945945946) internal successors, (3056), 37 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) [2023-08-25 06:08:11,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 202.0) internal successors, (7676), 38 states have internal predecessors, (7676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:08:11,427 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 202.0) internal successors, (7676), 38 states have internal predecessors, (7676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:08:11,427 INFO L175 Difference]: Start difference. First operand has 425 places, 1473 transitions, 40067 flow. Second operand 37 states and 3056 transitions. [2023-08-25 06:08:11,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 1900 transitions, 54741 flow [2023-08-25 06:08:19,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 1900 transitions, 54273 flow, removed 232 selfloop flow, removed 1 redundant places. [2023-08-25 06:08:19,613 INFO L231 Difference]: Finished difference. Result has 475 places, 1802 transitions, 53644 flow [2023-08-25 06:08:19,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=39699, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=914, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=544, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=53644, PETRI_PLACES=475, PETRI_TRANSITIONS=1802} [2023-08-25 06:08:19,615 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 440 predicate places. [2023-08-25 06:08:19,615 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 1802 transitions, 53644 flow [2023-08-25 06:08:19,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 79.56521739130434) internal successors, (1830), 23 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:08:19,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:08:19,615 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:08:19,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-08-25 06:08:19,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:08:19,821 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 06:08:19,821 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:08:19,821 INFO L85 PathProgramCache]: Analyzing trace with hash 622071226, now seen corresponding path program 28 times [2023-08-25 06:08:19,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:08:19,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340745053] [2023-08-25 06:08:19,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:08:19,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:08:19,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:08:19,943 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 13 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:08:19,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:08:19,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340745053] [2023-08-25 06:08:19,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340745053] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:08:19,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286634948] [2023-08-25 06:08:19,943 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 06:08:19,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:08:19,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:08:19,959 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:08:19,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-08-25 06:08:20,075 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 06:08:20,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:08:20,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-25 06:08:20,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:08:20,224 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 20 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:08:20,224 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:08:20,298 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 20 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:08:20,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286634948] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:08:20,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:08:20,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 8] total 21 [2023-08-25 06:08:20,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966055346] [2023-08-25 06:08:20,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:08:20,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-25 06:08:20,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:08:20,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-25 06:08:20,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2023-08-25 06:08:20,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-25 06:08:20,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 1802 transitions, 53644 flow. Second operand has 21 states, 21 states have (on average 79.66666666666667) internal successors, (1673), 21 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:08:20,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:08:20,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-25 06:08:20,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:08:29,182 INFO L124 PetriNetUnfolderBase]: 7005/18070 cut-off events. [2023-08-25 06:08:29,182 INFO L125 PetriNetUnfolderBase]: For 747830/751654 co-relation queries the response was YES. [2023-08-25 06:08:29,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142121 conditions, 18070 events. 7005/18070 cut-off events. For 747830/751654 co-relation queries the response was YES. Maximal size of possible extension queue 1021. Compared 200234 event pairs, 2291 based on Foata normal form. 1758/19161 useless extension candidates. Maximal degree in co-relation 141966. Up to 6352 conditions per place. [2023-08-25 06:08:29,761 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 882 selfloop transitions, 1008 changer transitions 0/1896 dead transitions. [2023-08-25 06:08:29,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 1896 transitions, 59472 flow [2023-08-25 06:08:29,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-25 06:08:29,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-25 06:08:29,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2301 transitions. [2023-08-25 06:08:29,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4068246110325318 [2023-08-25 06:08:29,772 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2301 transitions. [2023-08-25 06:08:29,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2301 transitions. [2023-08-25 06:08:29,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:08:29,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2301 transitions. [2023-08-25 06:08:29,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 82.17857142857143) internal successors, (2301), 28 states have internal predecessors, (2301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:08:29,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 202.0) internal successors, (5858), 29 states have internal predecessors, (5858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:08:29,787 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 202.0) internal successors, (5858), 29 states have internal predecessors, (5858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:08:29,787 INFO L175 Difference]: Start difference. First operand has 475 places, 1802 transitions, 53644 flow. Second operand 28 states and 2301 transitions. [2023-08-25 06:08:29,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 1896 transitions, 59472 flow [2023-08-25 06:08:39,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 1896 transitions, 58227 flow, removed 582 selfloop flow, removed 7 redundant places. [2023-08-25 06:08:39,464 INFO L231 Difference]: Finished difference. Result has 497 places, 1855 transitions, 56208 flow [2023-08-25 06:08:39,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=52655, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1802, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=955, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=847, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=56208, PETRI_PLACES=497, PETRI_TRANSITIONS=1855} [2023-08-25 06:08:39,466 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 462 predicate places. [2023-08-25 06:08:39,467 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 1855 transitions, 56208 flow [2023-08-25 06:08:39,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 79.66666666666667) internal successors, (1673), 21 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:08:39,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:08:39,467 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:08:39,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-08-25 06:08:39,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-08-25 06:08:39,672 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 06:08:39,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:08:39,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1455201822, now seen corresponding path program 29 times [2023-08-25 06:08:39,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:08:39,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386423262] [2023-08-25 06:08:39,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:08:39,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:08:39,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:08:39,780 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:08:39,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:08:39,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386423262] [2023-08-25 06:08:39,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386423262] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:08:39,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058026260] [2023-08-25 06:08:39,781 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 06:08:39,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:08:39,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:08:39,782 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:08:39,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-08-25 06:08:39,883 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-08-25 06:08:39,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:08:39,884 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-25 06:08:39,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:08:40,001 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:08:40,002 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:08:40,080 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:08:40,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058026260] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:08:40,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:08:40,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2023-08-25 06:08:40,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284903042] [2023-08-25 06:08:40,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:08:40,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-25 06:08:40,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:08:40,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-25 06:08:40,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=468, Unknown=0, NotChecked=0, Total=600 [2023-08-25 06:08:40,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-25 06:08:40,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 1855 transitions, 56208 flow. Second operand has 25 states, 25 states have (on average 79.52) internal successors, (1988), 25 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:08:40,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:08:40,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-25 06:08:40,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:08:50,895 INFO L124 PetriNetUnfolderBase]: 8263/21174 cut-off events. [2023-08-25 06:08:50,895 INFO L125 PetriNetUnfolderBase]: For 907117/911086 co-relation queries the response was YES. [2023-08-25 06:08:51,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171060 conditions, 21174 events. 8263/21174 cut-off events. For 907117/911086 co-relation queries the response was YES. Maximal size of possible extension queue 1117. Compared 235769 event pairs, 1821 based on Foata normal form. 2410/22845 useless extension candidates. Maximal degree in co-relation 170902. Up to 4646 conditions per place. [2023-08-25 06:08:51,769 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 615 selfloop transitions, 1665 changer transitions 11/2297 dead transitions. [2023-08-25 06:08:51,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 2297 transitions, 73733 flow [2023-08-25 06:08:51,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-08-25 06:08:51,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2023-08-25 06:08:51,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 4275 transitions. [2023-08-25 06:08:51,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40698781416603197 [2023-08-25 06:08:51,773 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 4275 transitions. [2023-08-25 06:08:51,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 4275 transitions. [2023-08-25 06:08:51,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:08:51,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 4275 transitions. [2023-08-25 06:08:51,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 82.21153846153847) internal successors, (4275), 52 states have internal predecessors, (4275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:08:51,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 202.0) internal successors, (10706), 53 states have internal predecessors, (10706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:08:51,802 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 202.0) internal successors, (10706), 53 states have internal predecessors, (10706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:08:51,802 INFO L175 Difference]: Start difference. First operand has 497 places, 1855 transitions, 56208 flow. Second operand 52 states and 4275 transitions. [2023-08-25 06:08:51,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 548 places, 2297 transitions, 73733 flow [2023-08-25 06:09:06,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 533 places, 2297 transitions, 72575 flow, removed 65 selfloop flow, removed 15 redundant places. [2023-08-25 06:09:06,177 INFO L231 Difference]: Finished difference. Result has 537 places, 2199 transitions, 71246 flow [2023-08-25 06:09:06,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=55247, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1855, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1322, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=529, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=71246, PETRI_PLACES=537, PETRI_TRANSITIONS=2199} [2023-08-25 06:09:06,179 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 502 predicate places. [2023-08-25 06:09:06,179 INFO L495 AbstractCegarLoop]: Abstraction has has 537 places, 2199 transitions, 71246 flow [2023-08-25 06:09:06,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 79.52) internal successors, (1988), 25 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:09:06,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:09:06,180 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:09:06,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-08-25 06:09:06,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-08-25 06:09:06,386 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 06:09:06,386 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:09:06,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1005348472, now seen corresponding path program 30 times [2023-08-25 06:09:06,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:09:06,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470242708] [2023-08-25 06:09:06,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:09:06,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:09:06,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:09:06,506 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:09:06,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:09:06,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470242708] [2023-08-25 06:09:06,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470242708] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:09:06,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682181980] [2023-08-25 06:09:06,507 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 06:09:06,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:09:06,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:09:06,508 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:09:06,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-08-25 06:09:06,638 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-08-25 06:09:06,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:09:06,640 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-25 06:09:06,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:09:06,758 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:09:06,758 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:09:06,825 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 06:09:06,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682181980] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:09:06,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:09:06,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 20 [2023-08-25 06:09:06,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655875181] [2023-08-25 06:09:06,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:09:06,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-25 06:09:06,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:09:06,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-25 06:09:06,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2023-08-25 06:09:06,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-25 06:09:06,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 537 places, 2199 transitions, 71246 flow. Second operand has 20 states, 20 states have (on average 79.9) internal successors, (1598), 20 states have internal predecessors, (1598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:09:06,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:09:06,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-25 06:09:06,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:09:20,324 INFO L124 PetriNetUnfolderBase]: 9554/24013 cut-off events. [2023-08-25 06:09:20,325 INFO L125 PetriNetUnfolderBase]: For 1164651/1168520 co-relation queries the response was YES. [2023-08-25 06:09:21,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203730 conditions, 24013 events. 9554/24013 cut-off events. For 1164651/1168520 co-relation queries the response was YES. Maximal size of possible extension queue 1256. Compared 268673 event pairs, 2079 based on Foata normal form. 2319/25371 useless extension candidates. Maximal degree in co-relation 203568. Up to 5154 conditions per place. [2023-08-25 06:09:21,158 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 527 selfloop transitions, 2084 changer transitions 12/2629 dead transitions. [2023-08-25 06:09:21,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 569 places, 2629 transitions, 89218 flow [2023-08-25 06:09:21,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-08-25 06:09:21,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-08-25 06:09:21,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 2726 transitions. [2023-08-25 06:09:21,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4089408940894089 [2023-08-25 06:09:21,161 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 2726 transitions. [2023-08-25 06:09:21,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 2726 transitions. [2023-08-25 06:09:21,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:09:21,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 2726 transitions. [2023-08-25 06:09:21,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 82.60606060606061) internal successors, (2726), 33 states have internal predecessors, (2726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:09:21,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 202.0) internal successors, (6868), 34 states have internal predecessors, (6868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:09:21,167 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 202.0) internal successors, (6868), 34 states have internal predecessors, (6868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:09:21,167 INFO L175 Difference]: Start difference. First operand has 537 places, 2199 transitions, 71246 flow. Second operand 33 states and 2726 transitions. [2023-08-25 06:09:21,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 569 places, 2629 transitions, 89218 flow [2023-08-25 06:09:41,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 553 places, 2629 transitions, 88052 flow, removed 339 selfloop flow, removed 16 redundant places. [2023-08-25 06:09:41,778 INFO L231 Difference]: Finished difference. Result has 556 places, 2552 transitions, 87144 flow [2023-08-25 06:09:41,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=70301, PETRI_DIFFERENCE_MINUEND_PLACES=521, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1746, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=87144, PETRI_PLACES=556, PETRI_TRANSITIONS=2552} [2023-08-25 06:09:41,780 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 521 predicate places. [2023-08-25 06:09:41,780 INFO L495 AbstractCegarLoop]: Abstraction has has 556 places, 2552 transitions, 87144 flow [2023-08-25 06:09:41,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 79.9) internal successors, (1598), 20 states have internal predecessors, (1598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:09:41,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:09:41,781 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:09:41,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-08-25 06:09:41,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-08-25 06:09:41,987 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 06:09:41,987 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:09:41,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1439139830, now seen corresponding path program 31 times [2023-08-25 06:09:41,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:09:41,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167546232] [2023-08-25 06:09:41,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:09:41,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:09:41,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:09:42,073 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 11 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:09:42,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:09:42,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167546232] [2023-08-25 06:09:42,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167546232] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:09:42,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231285045] [2023-08-25 06:09:42,074 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 06:09:42,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:09:42,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:09:42,089 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:09:42,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-08-25 06:09:42,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:09:42,198 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-25 06:09:42,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:09:42,313 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 20 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:09:42,313 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:09:42,380 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 06:09:42,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231285045] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:09:42,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:09:42,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 20 [2023-08-25 06:09:42,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524398449] [2023-08-25 06:09:42,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:09:42,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-25 06:09:42,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:09:42,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-25 06:09:42,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2023-08-25 06:09:42,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-25 06:09:42,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 556 places, 2552 transitions, 87144 flow. Second operand has 20 states, 20 states have (on average 79.7) internal successors, (1594), 20 states have internal predecessors, (1594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:09:42,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:09:42,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-25 06:09:42,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:09:57,407 INFO L124 PetriNetUnfolderBase]: 9512/24435 cut-off events. [2023-08-25 06:09:57,408 INFO L125 PetriNetUnfolderBase]: For 1267542/1271051 co-relation queries the response was YES. [2023-08-25 06:09:58,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211666 conditions, 24435 events. 9512/24435 cut-off events. For 1267542/1271051 co-relation queries the response was YES. Maximal size of possible extension queue 1273. Compared 279721 event pairs, 3096 based on Foata normal form. 1767/25339 useless extension candidates. Maximal degree in co-relation 211500. Up to 8840 conditions per place. [2023-08-25 06:09:58,561 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 940 selfloop transitions, 1663 changer transitions 0/2609 dead transitions. [2023-08-25 06:09:58,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 582 places, 2609 transitions, 92986 flow [2023-08-25 06:09:58,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-25 06:09:58,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-25 06:09:58,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2221 transitions. [2023-08-25 06:09:58,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40722405573890724 [2023-08-25 06:09:58,563 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2221 transitions. [2023-08-25 06:09:58,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2221 transitions. [2023-08-25 06:09:58,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:09:58,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2221 transitions. [2023-08-25 06:09:58,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 82.25925925925925) internal successors, (2221), 27 states have internal predecessors, (2221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:09:58,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 202.0) internal successors, (5656), 28 states have internal predecessors, (5656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:09:58,568 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 202.0) internal successors, (5656), 28 states have internal predecessors, (5656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:09:58,568 INFO L175 Difference]: Start difference. First operand has 556 places, 2552 transitions, 87144 flow. Second operand 27 states and 2221 transitions. [2023-08-25 06:09:58,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 582 places, 2609 transitions, 92986 flow [2023-08-25 06:10:18,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 565 places, 2609 transitions, 90990 flow, removed 745 selfloop flow, removed 17 redundant places. [2023-08-25 06:10:18,771 INFO L231 Difference]: Finished difference. Result has 567 places, 2554 transitions, 88620 flow [2023-08-25 06:10:18,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=85166, PETRI_DIFFERENCE_MINUEND_PLACES=539, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1661, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=891, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=88620, PETRI_PLACES=567, PETRI_TRANSITIONS=2554} [2023-08-25 06:10:18,774 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 532 predicate places. [2023-08-25 06:10:18,774 INFO L495 AbstractCegarLoop]: Abstraction has has 567 places, 2554 transitions, 88620 flow [2023-08-25 06:10:18,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 79.7) internal successors, (1594), 20 states have internal predecessors, (1594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:10:18,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:10:18,774 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:10:18,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-08-25 06:10:18,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-08-25 06:10:18,983 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 06:10:18,983 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:10:18,983 INFO L85 PathProgramCache]: Analyzing trace with hash -22696628, now seen corresponding path program 32 times [2023-08-25 06:10:18,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:10:18,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129064443] [2023-08-25 06:10:18,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:10:18,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:10:19,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:10:19,134 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:10:19,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:10:19,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129064443] [2023-08-25 06:10:19,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129064443] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:10:19,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170238907] [2023-08-25 06:10:19,135 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 06:10:19,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:10:19,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:10:19,149 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:10:19,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-08-25 06:10:19,278 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 06:10:19,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:10:19,279 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-25 06:10:19,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:10:19,384 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:10:19,384 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:10:19,448 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 7 proven. 31 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 06:10:19,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170238907] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:10:19,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:10:19,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 21 [2023-08-25 06:10:19,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315308155] [2023-08-25 06:10:19,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:10:19,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-25 06:10:19,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:10:19,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-25 06:10:19,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2023-08-25 06:10:19,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-25 06:10:19,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 567 places, 2554 transitions, 88620 flow. Second operand has 21 states, 21 states have (on average 79.80952380952381) internal successors, (1676), 21 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:10:19,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:10:19,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-25 06:10:19,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:10:34,929 INFO L124 PetriNetUnfolderBase]: 10014/25886 cut-off events. [2023-08-25 06:10:34,929 INFO L125 PetriNetUnfolderBase]: For 1338317/1341526 co-relation queries the response was YES. [2023-08-25 06:10:35,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225834 conditions, 25886 events. 10014/25886 cut-off events. For 1338317/1341526 co-relation queries the response was YES. Maximal size of possible extension queue 1332. Compared 298411 event pairs, 2241 based on Foata normal form. 1087/26055 useless extension candidates. Maximal degree in co-relation 225670. Up to 5677 conditions per place. [2023-08-25 06:10:35,452 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 1116 selfloop transitions, 1650 changer transitions 33/2805 dead transitions. [2023-08-25 06:10:35,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 596 places, 2805 transitions, 100708 flow [2023-08-25 06:10:35,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-08-25 06:10:35,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-08-25 06:10:35,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2474 transitions. [2023-08-25 06:10:35,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40825082508250826 [2023-08-25 06:10:35,456 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2474 transitions. [2023-08-25 06:10:35,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2474 transitions. [2023-08-25 06:10:35,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:10:35,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2474 transitions. [2023-08-25 06:10:35,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 82.46666666666667) internal successors, (2474), 30 states have internal predecessors, (2474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:10:35,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 202.0) internal successors, (6262), 31 states have internal predecessors, (6262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:10:35,473 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 202.0) internal successors, (6262), 31 states have internal predecessors, (6262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:10:35,473 INFO L175 Difference]: Start difference. First operand has 567 places, 2554 transitions, 88620 flow. Second operand 30 states and 2474 transitions. [2023-08-25 06:10:35,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 596 places, 2805 transitions, 100708 flow [2023-08-25 06:11:04,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 574 places, 2805 transitions, 97678 flow, removed 33 selfloop flow, removed 22 redundant places. [2023-08-25 06:11:04,607 INFO L231 Difference]: Finished difference. Result has 589 places, 2694 transitions, 95967 flow [2023-08-25 06:11:04,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=85717, PETRI_DIFFERENCE_MINUEND_PLACES=545, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1497, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=965, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=95967, PETRI_PLACES=589, PETRI_TRANSITIONS=2694} [2023-08-25 06:11:04,611 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 554 predicate places. [2023-08-25 06:11:04,611 INFO L495 AbstractCegarLoop]: Abstraction has has 589 places, 2694 transitions, 95967 flow [2023-08-25 06:11:04,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 79.80952380952381) internal successors, (1676), 21 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:11:04,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:11:04,611 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:11:04,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-08-25 06:11:04,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:11:04,812 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 06:11:04,812 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:11:04,813 INFO L85 PathProgramCache]: Analyzing trace with hash 521885102, now seen corresponding path program 33 times [2023-08-25 06:11:04,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:11:04,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242464894] [2023-08-25 06:11:04,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:11:04,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:11:04,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:11:04,914 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:11:04,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:11:04,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242464894] [2023-08-25 06:11:04,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242464894] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:11:04,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497250308] [2023-08-25 06:11:04,915 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 06:11:04,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:11:04,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:11:04,916 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:11:04,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-08-25 06:11:05,039 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-08-25 06:11:05,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:11:05,041 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-25 06:11:05,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:11:05,146 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:11:05,147 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:11:05,223 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:11:05,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497250308] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:11:05,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:11:05,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2023-08-25 06:11:05,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693604331] [2023-08-25 06:11:05,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:11:05,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-25 06:11:05,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:11:05,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-25 06:11:05,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=392, Unknown=0, NotChecked=0, Total=506 [2023-08-25 06:11:05,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-25 06:11:05,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 589 places, 2694 transitions, 95967 flow. Second operand has 23 states, 23 states have (on average 79.6086956521739) internal successors, (1831), 23 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:11:05,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:11:05,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-25 06:11:05,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:11:22,957 INFO L124 PetriNetUnfolderBase]: 10010/25866 cut-off events. [2023-08-25 06:11:22,957 INFO L125 PetriNetUnfolderBase]: For 1411574/1414396 co-relation queries the response was YES. [2023-08-25 06:11:23,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229815 conditions, 25866 events. 10010/25866 cut-off events. For 1411574/1414396 co-relation queries the response was YES. Maximal size of possible extension queue 1328. Compared 297981 event pairs, 2243 based on Foata normal form. 893/25814 useless extension candidates. Maximal degree in co-relation 229639. Up to 5667 conditions per place. [2023-08-25 06:11:23,793 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 1106 selfloop transitions, 1703 changer transitions 0/2815 dead transitions. [2023-08-25 06:11:23,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 632 places, 2815 transitions, 102879 flow [2023-08-25 06:11:23,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-08-25 06:11:23,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-08-25 06:11:23,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 3622 transitions. [2023-08-25 06:11:23,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4075157515751575 [2023-08-25 06:11:23,796 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 3622 transitions. [2023-08-25 06:11:23,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 3622 transitions. [2023-08-25 06:11:23,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:11:23,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 3622 transitions. [2023-08-25 06:11:23,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 82.31818181818181) internal successors, (3622), 44 states have internal predecessors, (3622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:11:23,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 202.0) internal successors, (9090), 45 states have internal predecessors, (9090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:11:23,803 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 202.0) internal successors, (9090), 45 states have internal predecessors, (9090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:11:23,803 INFO L175 Difference]: Start difference. First operand has 589 places, 2694 transitions, 95967 flow. Second operand 44 states and 3622 transitions. [2023-08-25 06:11:23,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 632 places, 2815 transitions, 102879 flow [2023-08-25 06:11:51,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 621 places, 2815 transitions, 102056 flow, removed 253 selfloop flow, removed 11 redundant places. [2023-08-25 06:11:51,368 INFO L231 Difference]: Finished difference. Result has 626 places, 2724 transitions, 99837 flow [2023-08-25 06:11:51,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=95206, PETRI_DIFFERENCE_MINUEND_PLACES=578, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2694, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1676, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1003, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=99837, PETRI_PLACES=626, PETRI_TRANSITIONS=2724} [2023-08-25 06:11:51,370 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 591 predicate places. [2023-08-25 06:11:51,370 INFO L495 AbstractCegarLoop]: Abstraction has has 626 places, 2724 transitions, 99837 flow [2023-08-25 06:11:51,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 79.6086956521739) internal successors, (1831), 23 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:11:51,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:11:51,371 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:11:51,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-08-25 06:11:51,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2023-08-25 06:11:51,575 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 06:11:51,576 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:11:51,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1680543328, now seen corresponding path program 34 times [2023-08-25 06:11:51,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:11:51,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302805605] [2023-08-25 06:11:51,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:11:51,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:11:51,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:11:51,674 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 7 proven. 31 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 06:11:51,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:11:51,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302805605] [2023-08-25 06:11:51,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302805605] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:11:51,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530304327] [2023-08-25 06:11:51,675 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 06:11:51,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:11:51,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:11:51,677 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:11:51,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-08-25 06:11:51,813 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 06:11:51,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:11:51,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-25 06:11:51,815 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:11:51,931 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:11:51,931 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:11:51,993 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 27 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-25 06:11:51,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530304327] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:11:51,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:11:51,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 9] total 18 [2023-08-25 06:11:51,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026137052] [2023-08-25 06:11:51,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:11:51,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-25 06:11:51,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:11:51,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-25 06:11:51,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2023-08-25 06:11:51,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-25 06:11:51,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 626 places, 2724 transitions, 99837 flow. Second operand has 18 states, 18 states have (on average 80.0) internal successors, (1440), 18 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:11:51,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:11:51,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-25 06:11:51,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:12:12,586 INFO L124 PetriNetUnfolderBase]: 11269/29385 cut-off events. [2023-08-25 06:12:12,587 INFO L125 PetriNetUnfolderBase]: For 1710463/1713981 co-relation queries the response was YES. [2023-08-25 06:12:13,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265756 conditions, 29385 events. 11269/29385 cut-off events. For 1710463/1713981 co-relation queries the response was YES. Maximal size of possible extension queue 1526. Compared 346979 event pairs, 2207 based on Foata normal form. 1915/30301 useless extension candidates. Maximal degree in co-relation 265574. Up to 6484 conditions per place. [2023-08-25 06:12:13,951 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 584 selfloop transitions, 2566 changer transitions 1/3157 dead transitions. [2023-08-25 06:12:13,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 658 places, 3157 transitions, 118876 flow [2023-08-25 06:12:13,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-08-25 06:12:13,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-08-25 06:12:13,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 2720 transitions. [2023-08-25 06:12:13,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40804080408040805 [2023-08-25 06:12:13,953 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 2720 transitions. [2023-08-25 06:12:13,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 2720 transitions. [2023-08-25 06:12:13,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:12:13,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 2720 transitions. [2023-08-25 06:12:13,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 82.42424242424242) internal successors, (2720), 33 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:12:13,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 202.0) internal successors, (6868), 34 states have internal predecessors, (6868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:12:13,959 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 202.0) internal successors, (6868), 34 states have internal predecessors, (6868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:12:13,959 INFO L175 Difference]: Start difference. First operand has 626 places, 2724 transitions, 99837 flow. Second operand 33 states and 2720 transitions. [2023-08-25 06:12:13,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 658 places, 3157 transitions, 118876 flow [2023-08-25 06:12:50,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 645 places, 3157 transitions, 117369 flow, removed 224 selfloop flow, removed 13 redundant places. [2023-08-25 06:12:50,791 INFO L231 Difference]: Finished difference. Result has 652 places, 3057 transitions, 117570 flow [2023-08-25 06:12:50,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=98251, PETRI_DIFFERENCE_MINUEND_PLACES=613, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2717, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2246, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=117570, PETRI_PLACES=652, PETRI_TRANSITIONS=3057} [2023-08-25 06:12:50,794 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 617 predicate places. [2023-08-25 06:12:50,794 INFO L495 AbstractCegarLoop]: Abstraction has has 652 places, 3057 transitions, 117570 flow [2023-08-25 06:12:50,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 80.0) internal successors, (1440), 18 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:12:50,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:12:50,795 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:12:50,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-08-25 06:12:50,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:12:51,000 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 06:12:51,000 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:12:51,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1771192164, now seen corresponding path program 35 times [2023-08-25 06:12:51,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:12:51,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486887284] [2023-08-25 06:12:51,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:12:51,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:12:51,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:12:51,074 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:12:51,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:12:51,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486887284] [2023-08-25 06:12:51,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486887284] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:12:51,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850524914] [2023-08-25 06:12:51,075 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 06:12:51,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:12:51,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:12:51,076 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:12:51,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-08-25 06:12:51,185 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-08-25 06:12:51,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:12:51,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-25 06:12:51,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:12:51,300 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:12:51,301 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:12:51,359 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:12:51,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850524914] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:12:51,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:12:51,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 19 [2023-08-25 06:12:51,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92823607] [2023-08-25 06:12:51,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:12:51,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-25 06:12:51,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:12:51,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-25 06:12:51,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2023-08-25 06:12:51,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-25 06:12:51,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 652 places, 3057 transitions, 117570 flow. Second operand has 19 states, 19 states have (on average 79.73684210526316) internal successors, (1515), 19 states have internal predecessors, (1515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:12:51,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:12:51,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-25 06:12:51,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:13:14,878 INFO L124 PetriNetUnfolderBase]: 11817/31049 cut-off events. [2023-08-25 06:13:14,878 INFO L125 PetriNetUnfolderBase]: For 1928041/1932047 co-relation queries the response was YES. [2023-08-25 06:13:16,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290930 conditions, 31049 events. 11817/31049 cut-off events. For 1928041/1932047 co-relation queries the response was YES. Maximal size of possible extension queue 1641. Compared 371942 event pairs, 2251 based on Foata normal form. 2383/32451 useless extension candidates. Maximal degree in co-relation 290741. Up to 6890 conditions per place. [2023-08-25 06:13:16,464 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 451 selfloop transitions, 2859 changer transitions 5/3321 dead transitions. [2023-08-25 06:13:16,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 691 places, 3321 transitions, 130951 flow [2023-08-25 06:13:16,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-08-25 06:13:16,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-08-25 06:13:16,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 3292 transitions. [2023-08-25 06:13:16,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074257425742574 [2023-08-25 06:13:16,473 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 3292 transitions. [2023-08-25 06:13:16,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 3292 transitions. [2023-08-25 06:13:16,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:13:16,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 3292 transitions. [2023-08-25 06:13:16,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 82.3) internal successors, (3292), 40 states have internal predecessors, (3292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:13:16,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 202.0) internal successors, (8282), 41 states have internal predecessors, (8282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:13:16,481 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 202.0) internal successors, (8282), 41 states have internal predecessors, (8282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:13:16,481 INFO L175 Difference]: Start difference. First operand has 652 places, 3057 transitions, 117570 flow. Second operand 40 states and 3292 transitions. [2023-08-25 06:13:16,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 691 places, 3321 transitions, 130951 flow [2023-08-25 06:13:58,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 674 places, 3321 transitions, 129410 flow, removed 368 selfloop flow, removed 17 redundant places. [2023-08-25 06:13:59,066 INFO L231 Difference]: Finished difference. Result has 678 places, 3235 transitions, 129217 flow [2023-08-25 06:13:59,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=116115, PETRI_DIFFERENCE_MINUEND_PLACES=635, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3057, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2682, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=129217, PETRI_PLACES=678, PETRI_TRANSITIONS=3235} [2023-08-25 06:13:59,069 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 643 predicate places. [2023-08-25 06:13:59,069 INFO L495 AbstractCegarLoop]: Abstraction has has 678 places, 3235 transitions, 129217 flow [2023-08-25 06:13:59,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 79.73684210526316) internal successors, (1515), 19 states have internal predecessors, (1515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:13:59,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:13:59,069 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:13:59,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2023-08-25 06:13:59,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:13:59,274 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 06:13:59,274 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:13:59,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1681370420, now seen corresponding path program 36 times [2023-08-25 06:13:59,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:13:59,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923907445] [2023-08-25 06:13:59,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:13:59,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:13:59,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:13:59,345 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:13:59,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:13:59,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923907445] [2023-08-25 06:13:59,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923907445] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:13:59,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258749192] [2023-08-25 06:13:59,346 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 06:13:59,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:13:59,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:13:59,347 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:13:59,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-08-25 06:13:59,490 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-08-25 06:13:59,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:13:59,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-25 06:13:59,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:13:59,588 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:13:59,589 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:13:59,651 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 37 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 06:13:59,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258749192] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:13:59,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:13:59,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 19 [2023-08-25 06:13:59,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675700840] [2023-08-25 06:13:59,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:13:59,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-25 06:13:59,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:13:59,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-25 06:13:59,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2023-08-25 06:13:59,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-25 06:13:59,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 678 places, 3235 transitions, 129217 flow. Second operand has 19 states, 19 states have (on average 79.89473684210526) internal successors, (1518), 19 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:13:59,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:13:59,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-25 06:13:59,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:14:30,015 INFO L124 PetriNetUnfolderBase]: 12965/33074 cut-off events. [2023-08-25 06:14:30,015 INFO L125 PetriNetUnfolderBase]: For 2329746/2333503 co-relation queries the response was YES. [2023-08-25 06:14:30,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331314 conditions, 33074 events. 12965/33074 cut-off events. For 2329746/2333503 co-relation queries the response was YES. Maximal size of possible extension queue 1772. Compared 394621 event pairs, 2945 based on Foata normal form. 2258/33990 useless extension candidates. Maximal degree in co-relation 331120. Up to 7003 conditions per place. [2023-08-25 06:14:31,053 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 688 selfloop transitions, 2985 changer transitions 4/3683 dead transitions. [2023-08-25 06:14:31,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 709 places, 3683 transitions, 152320 flow [2023-08-25 06:14:31,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-25 06:14:31,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-25 06:14:31,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 2650 transitions. [2023-08-25 06:14:31,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4099628712871287 [2023-08-25 06:14:31,064 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 2650 transitions. [2023-08-25 06:14:31,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 2650 transitions. [2023-08-25 06:14:31,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:14:31,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 2650 transitions. [2023-08-25 06:14:31,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 82.8125) internal successors, (2650), 32 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:14:31,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 202.0) internal successors, (6666), 33 states have internal predecessors, (6666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:14:31,069 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 202.0) internal successors, (6666), 33 states have internal predecessors, (6666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:14:31,069 INFO L175 Difference]: Start difference. First operand has 678 places, 3235 transitions, 129217 flow. Second operand 32 states and 2650 transitions. [2023-08-25 06:14:31,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 709 places, 3683 transitions, 152320 flow [2023-08-25 06:15:23,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 688 places, 3683 transitions, 150131 flow, removed 397 selfloop flow, removed 21 redundant places. [2023-08-25 06:15:23,982 INFO L231 Difference]: Finished difference. Result has 691 places, 3590 transitions, 149274 flow [2023-08-25 06:15:23,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=127204, PETRI_DIFFERENCE_MINUEND_PLACES=657, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2644, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=563, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=149274, PETRI_PLACES=691, PETRI_TRANSITIONS=3590} [2023-08-25 06:15:23,984 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 656 predicate places. [2023-08-25 06:15:23,984 INFO L495 AbstractCegarLoop]: Abstraction has has 691 places, 3590 transitions, 149274 flow [2023-08-25 06:15:23,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 79.89473684210526) internal successors, (1518), 19 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:15:23,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:15:23,984 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:15:23,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-08-25 06:15:24,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2023-08-25 06:15:24,189 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 06:15:24,189 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:15:24,190 INFO L85 PathProgramCache]: Analyzing trace with hash -763117882, now seen corresponding path program 37 times [2023-08-25 06:15:24,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:15:24,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488741261] [2023-08-25 06:15:24,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:15:24,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:15:24,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:15:24,269 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 11 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:15:24,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:15:24,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488741261] [2023-08-25 06:15:24,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488741261] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:15:24,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901442611] [2023-08-25 06:15:24,270 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 06:15:24,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:15:24,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:15:24,271 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:15:24,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-08-25 06:15:24,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:15:24,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-25 06:15:24,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:15:24,477 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 23 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:15:24,477 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:15:24,533 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 11 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 06:15:24,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901442611] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:15:24,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:15:24,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 19 [2023-08-25 06:15:24,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650694599] [2023-08-25 06:15:24,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:15:24,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-25 06:15:24,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:15:24,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-25 06:15:24,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2023-08-25 06:15:24,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-25 06:15:24,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 691 places, 3590 transitions, 149274 flow. Second operand has 19 states, 19 states have (on average 79.6842105263158) internal successors, (1514), 19 states have internal predecessors, (1514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:15:24,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:15:24,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-25 06:15:24,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:15:55,026 INFO L124 PetriNetUnfolderBase]: 12932/33805 cut-off events. [2023-08-25 06:15:55,031 INFO L125 PetriNetUnfolderBase]: For 2560245/2564110 co-relation queries the response was YES. [2023-08-25 06:15:55,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342300 conditions, 33805 events. 12932/33805 cut-off events. For 2560245/2564110 co-relation queries the response was YES. Maximal size of possible extension queue 1807. Compared 413255 event pairs, 4380 based on Foata normal form. 1862/34519 useless extension candidates. Maximal degree in co-relation 342105. Up to 12622 conditions per place. [2023-08-25 06:15:55,892 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 1262 selfloop transitions, 2404 changer transitions 0/3672 dead transitions. [2023-08-25 06:15:55,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 717 places, 3672 transitions, 157711 flow [2023-08-25 06:15:55,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-25 06:15:55,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-25 06:15:55,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2224 transitions. [2023-08-25 06:15:55,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4077741107444078 [2023-08-25 06:15:55,914 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2224 transitions. [2023-08-25 06:15:55,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2224 transitions. [2023-08-25 06:15:55,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:15:55,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2224 transitions. [2023-08-25 06:15:55,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 82.37037037037037) internal successors, (2224), 27 states have internal predecessors, (2224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:15:55,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 202.0) internal successors, (5656), 28 states have internal predecessors, (5656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:15:55,918 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 202.0) internal successors, (5656), 28 states have internal predecessors, (5656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:15:55,918 INFO L175 Difference]: Start difference. First operand has 691 places, 3590 transitions, 149274 flow. Second operand 27 states and 2224 transitions. [2023-08-25 06:15:55,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 717 places, 3672 transitions, 157711 flow [2023-08-25 06:16:51,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 706 places, 3672 transitions, 156186 flow, removed 668 selfloop flow, removed 11 redundant places. [2023-08-25 06:16:51,639 INFO L231 Difference]: Finished difference. Result has 708 places, 3592 transitions, 152702 flow [2023-08-25 06:16:51,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=147749, PETRI_DIFFERENCE_MINUEND_PLACES=680, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2402, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=152702, PETRI_PLACES=708, PETRI_TRANSITIONS=3592} [2023-08-25 06:16:51,642 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 673 predicate places. [2023-08-25 06:16:51,642 INFO L495 AbstractCegarLoop]: Abstraction has has 708 places, 3592 transitions, 152702 flow [2023-08-25 06:16:51,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 79.6842105263158) internal successors, (1514), 19 states have internal predecessors, (1514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:16:51,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:16:51,642 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:16:51,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2023-08-25 06:16:51,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2023-08-25 06:16:51,847 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 06:16:51,848 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:16:51,848 INFO L85 PathProgramCache]: Analyzing trace with hash 653325320, now seen corresponding path program 38 times [2023-08-25 06:16:51,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:16:51,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314176395] [2023-08-25 06:16:51,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:16:51,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:16:51,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:16:51,946 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:16:51,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:16:51,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314176395] [2023-08-25 06:16:51,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314176395] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:16:51,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74411581] [2023-08-25 06:16:51,947 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 06:16:51,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:16:51,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:16:51,948 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:16:51,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-08-25 06:16:52,088 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 06:16:52,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:16:52,089 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-25 06:16:52,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:16:52,208 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:16:52,208 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:16:52,279 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 34 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-25 06:16:52,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74411581] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:16:52,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:16:52,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 19 [2023-08-25 06:16:52,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101302623] [2023-08-25 06:16:52,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:16:52,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-25 06:16:52,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:16:52,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-25 06:16:52,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2023-08-25 06:16:52,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-25 06:16:52,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 708 places, 3592 transitions, 152702 flow. Second operand has 19 states, 19 states have (on average 79.89473684210526) internal successors, (1518), 19 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:16:52,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:16:52,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-25 06:16:52,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:17:28,527 INFO L124 PetriNetUnfolderBase]: 13328/34913 cut-off events. [2023-08-25 06:17:28,528 INFO L125 PetriNetUnfolderBase]: For 2716752/2720345 co-relation queries the response was YES. [2023-08-25 06:17:29,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 360304 conditions, 34913 events. 13328/34913 cut-off events. For 2716752/2720345 co-relation queries the response was YES. Maximal size of possible extension queue 1853. Compared 427152 event pairs, 3652 based on Foata normal form. 1145/34873 useless extension candidates. Maximal degree in co-relation 360106. Up to 8953 conditions per place. [2023-08-25 06:17:29,607 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 2196 selfloop transitions, 1611 changer transitions 7/3820 dead transitions. [2023-08-25 06:17:29,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 736 places, 3820 transitions, 167026 flow [2023-08-25 06:17:29,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-25 06:17:29,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-08-25 06:17:29,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2396 transitions. [2023-08-25 06:17:29,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090133151246159 [2023-08-25 06:17:29,609 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2396 transitions. [2023-08-25 06:17:29,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2396 transitions. [2023-08-25 06:17:29,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:17:29,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2396 transitions. [2023-08-25 06:17:29,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 82.62068965517241) internal successors, (2396), 29 states have internal predecessors, (2396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:17:29,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 202.0) internal successors, (6060), 30 states have internal predecessors, (6060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:17:29,614 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 202.0) internal successors, (6060), 30 states have internal predecessors, (6060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:17:29,614 INFO L175 Difference]: Start difference. First operand has 708 places, 3592 transitions, 152702 flow. Second operand 29 states and 2396 transitions. [2023-08-25 06:17:29,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 736 places, 3820 transitions, 167026 flow [2023-08-25 06:18:33,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 715 places, 3820 transitions, 162660 flow, removed 31 selfloop flow, removed 21 redundant places. [2023-08-25 06:18:33,497 INFO L231 Difference]: Finished difference. Result has 723 places, 3689 transitions, 157173 flow [2023-08-25 06:18:33,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=148474, PETRI_DIFFERENCE_MINUEND_PLACES=687, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3592, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1508, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2013, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=157173, PETRI_PLACES=723, PETRI_TRANSITIONS=3689} [2023-08-25 06:18:33,507 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 688 predicate places. [2023-08-25 06:18:33,507 INFO L495 AbstractCegarLoop]: Abstraction has has 723 places, 3689 transitions, 157173 flow [2023-08-25 06:18:33,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 79.89473684210526) internal successors, (1518), 19 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:18:33,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:18:33,507 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:18:33,525 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2023-08-25 06:18:33,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2023-08-25 06:18:33,708 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 06:18:33,708 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:18:33,708 INFO L85 PathProgramCache]: Analyzing trace with hash -623009750, now seen corresponding path program 39 times [2023-08-25 06:18:33,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:18:33,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525869074] [2023-08-25 06:18:33,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:18:33,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:18:33,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:18:33,788 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:18:33,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:18:33,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525869074] [2023-08-25 06:18:33,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525869074] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:18:33,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995266596] [2023-08-25 06:18:33,789 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 06:18:33,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:18:33,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:18:33,807 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:18:33,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-08-25 06:18:33,950 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-08-25 06:18:33,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:18:33,951 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-25 06:18:33,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:18:34,046 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:18:34,047 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:18:34,109 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 37 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 06:18:34,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995266596] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:18:34,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:18:34,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 19 [2023-08-25 06:18:34,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711617341] [2023-08-25 06:18:34,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:18:34,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-25 06:18:34,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:18:34,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-25 06:18:34,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2023-08-25 06:18:34,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-25 06:18:34,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 723 places, 3689 transitions, 157173 flow. Second operand has 19 states, 19 states have (on average 79.73684210526316) internal successors, (1515), 19 states have internal predecessors, (1515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:18:34,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:18:34,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-25 06:18:34,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:19:10,793 INFO L124 PetriNetUnfolderBase]: 13633/35477 cut-off events. [2023-08-25 06:19:10,793 INFO L125 PetriNetUnfolderBase]: For 2758009/2761641 co-relation queries the response was YES. [2023-08-25 06:19:12,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 367285 conditions, 35477 events. 13633/35477 cut-off events. For 2758009/2761641 co-relation queries the response was YES. Maximal size of possible extension queue 1896. Compared 432063 event pairs, 3040 based on Foata normal form. 1173/35338 useless extension candidates. Maximal degree in co-relation 367081. Up to 7669 conditions per place. [2023-08-25 06:19:12,756 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 1387 selfloop transitions, 2477 changer transitions 1/3871 dead transitions. [2023-08-25 06:19:12,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 753 places, 3871 transitions, 169048 flow [2023-08-25 06:19:12,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-08-25 06:19:12,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-08-25 06:19:12,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2561 transitions. [2023-08-25 06:19:12,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4089747684445864 [2023-08-25 06:19:12,758 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 2561 transitions. [2023-08-25 06:19:12,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 2561 transitions. [2023-08-25 06:19:12,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:19:12,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 2561 transitions. [2023-08-25 06:19:12,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 82.61290322580645) internal successors, (2561), 31 states have internal predecessors, (2561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:19:12,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 202.0) internal successors, (6464), 32 states have internal predecessors, (6464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:19:12,763 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 202.0) internal successors, (6464), 32 states have internal predecessors, (6464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:19:12,763 INFO L175 Difference]: Start difference. First operand has 723 places, 3689 transitions, 157173 flow. Second operand 31 states and 2561 transitions. [2023-08-25 06:19:12,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 753 places, 3871 transitions, 169048 flow [2023-08-25 06:20:24,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 744 places, 3871 transitions, 167999 flow, removed 413 selfloop flow, removed 9 redundant places. [2023-08-25 06:20:24,728 INFO L231 Difference]: Finished difference. Result has 752 places, 3769 transitions, 166896 flow [2023-08-25 06:20:24,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=156126, PETRI_DIFFERENCE_MINUEND_PLACES=714, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3688, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2398, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=166896, PETRI_PLACES=752, PETRI_TRANSITIONS=3769} [2023-08-25 06:20:24,731 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 717 predicate places. [2023-08-25 06:20:24,731 INFO L495 AbstractCegarLoop]: Abstraction has has 752 places, 3769 transitions, 166896 flow [2023-08-25 06:20:24,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 79.73684210526316) internal successors, (1515), 19 states have internal predecessors, (1515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:20:24,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:20:24,732 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:20:24,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2023-08-25 06:20:24,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-08-25 06:20:24,937 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 06:20:24,937 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:20:24,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1197907050, now seen corresponding path program 40 times [2023-08-25 06:20:24,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:20:24,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362881841] [2023-08-25 06:20:24,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:20:24,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:20:24,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:20:25,017 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:20:25,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:20:25,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362881841] [2023-08-25 06:20:25,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362881841] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:20:25,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916373490] [2023-08-25 06:20:25,017 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 06:20:25,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:20:25,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:20:25,018 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:20:25,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-08-25 06:20:25,130 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 06:20:25,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:20:25,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-25 06:20:25,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:20:25,230 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:20:25,230 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:20:25,315 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 6 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:20:25,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916373490] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:20:25,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:20:25,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2023-08-25 06:20:25,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277523463] [2023-08-25 06:20:25,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:20:25,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-25 06:20:25,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:20:25,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-25 06:20:25,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2023-08-25 06:20:25,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-25 06:20:25,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 752 places, 3769 transitions, 166896 flow. Second operand has 21 states, 21 states have (on average 79.66666666666667) internal successors, (1673), 21 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:20:25,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:20:25,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-25 06:20:25,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-08-25 06:20:27,500 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-25 06:20:27,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-25 06:20:27,507 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (20 of 21 remaining) [2023-08-25 06:20:27,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2023-08-25 06:20:27,524 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-25 06:20:27,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:20:27,711 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (21states, 78/202 universal loopers) in iteration 49,while PetriNetUnfolder was constructing finite prefix that currently has 7481 conditions, 1011 events (288/1010 cut-off events. For 51939/52044 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 9573 event pairs, 138 based on Foata normal form. 42/1189 useless extension candidates. Maximal degree in co-relation 7268. Up to 314 conditions per place.). [2023-08-25 06:20:27,713 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONDATA_RACE (19 of 21 remaining) [2023-08-25 06:20:27,713 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONDATA_RACE (18 of 21 remaining) [2023-08-25 06:20:27,713 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONDATA_RACE (17 of 21 remaining) [2023-08-25 06:20:27,713 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONDATA_RACE (16 of 21 remaining) [2023-08-25 06:20:27,713 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONDATA_RACE (15 of 21 remaining) [2023-08-25 06:20:27,713 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONDATA_RACE (14 of 21 remaining) [2023-08-25 06:20:27,713 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONDATA_RACE (13 of 21 remaining) [2023-08-25 06:20:27,713 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (12 of 21 remaining) [2023-08-25 06:20:27,713 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 21 remaining) [2023-08-25 06:20:27,713 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (10 of 21 remaining) [2023-08-25 06:20:27,713 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (9 of 21 remaining) [2023-08-25 06:20:27,713 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 21 remaining) [2023-08-25 06:20:27,713 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 21 remaining) [2023-08-25 06:20:27,713 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONDATA_RACE (6 of 21 remaining) [2023-08-25 06:20:27,714 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONDATA_RACE (5 of 21 remaining) [2023-08-25 06:20:27,714 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONDATA_RACE (4 of 21 remaining) [2023-08-25 06:20:27,714 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONDATA_RACE (3 of 21 remaining) [2023-08-25 06:20:27,714 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONDATA_RACE (2 of 21 remaining) [2023-08-25 06:20:27,714 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONDATA_RACE (1 of 21 remaining) [2023-08-25 06:20:27,714 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONDATA_RACE (0 of 21 remaining) [2023-08-25 06:20:27,714 INFO L445 BasicCegarLoop]: Path program histogram: [40, 6, 1, 1, 1] [2023-08-25 06:20:27,717 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-25 06:20:27,717 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-25 06:20:27,719 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 06:20:27 BasicIcfg [2023-08-25 06:20:27,719 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-25 06:20:27,719 INFO L158 Benchmark]: Toolchain (without parser) took 838320.59ms. Allocated memory was 314.6MB in the beginning and 11.1GB in the end (delta: 10.8GB). Free memory was 291.9MB in the beginning and 7.5GB in the end (delta: -7.3GB). Peak memory consumption was 3.6GB. Max. memory is 16.0GB. [2023-08-25 06:20:27,719 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 314.6MB. Free memory is still 291.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-25 06:20:27,719 INFO L158 Benchmark]: CACSL2BoogieTranslator took 220.76ms. Allocated memory is still 314.6MB. Free memory was 291.4MB in the beginning and 280.4MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-25 06:20:27,719 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.12ms. Allocated memory is still 314.6MB. Free memory was 280.4MB in the beginning and 278.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 06:20:27,719 INFO L158 Benchmark]: Boogie Preprocessor took 38.94ms. Allocated memory is still 314.6MB. Free memory was 278.8MB in the beginning and 277.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-25 06:20:27,719 INFO L158 Benchmark]: RCFGBuilder took 365.16ms. Allocated memory is still 314.6MB. Free memory was 277.4MB in the beginning and 258.5MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-25 06:20:27,720 INFO L158 Benchmark]: TraceAbstraction took 837646.84ms. Allocated memory was 314.6MB in the beginning and 11.1GB in the end (delta: 10.8GB). Free memory was 257.4MB in the beginning and 7.5GB in the end (delta: -7.3GB). Peak memory consumption was 3.5GB. Max. memory is 16.0GB. [2023-08-25 06:20:27,720 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 314.6MB. Free memory is still 291.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 220.76ms. Allocated memory is still 314.6MB. Free memory was 291.4MB in the beginning and 280.4MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 44.12ms. Allocated memory is still 314.6MB. Free memory was 280.4MB in the beginning and 278.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 38.94ms. Allocated memory is still 314.6MB. Free memory was 278.8MB in the beginning and 277.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 365.16ms. Allocated memory is still 314.6MB. Free memory was 277.4MB in the beginning and 258.5MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 837646.84ms. Allocated memory was 314.6MB in the beginning and 11.1GB in the end (delta: 10.8GB). Free memory was 257.4MB in the beginning and 7.5GB in the end (delta: -7.3GB). Peak memory consumption was 3.5GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 98 PlacesBefore, 35 PlacesAfterwards, 96 TransitionsBefore, 32 TransitionsAfterwards, 1636 CoEnabledTransitionPairs, 6 FixpointIterations, 37 TrivialSequentialCompositions, 48 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 95 TotalNumberOfCompositions, 3843 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2506, independent: 2372, independent conditional: 0, independent unconditional: 2372, dependent: 134, dependent conditional: 0, dependent unconditional: 134, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 956, independent: 931, independent conditional: 0, independent unconditional: 931, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2506, independent: 1441, independent conditional: 0, independent unconditional: 1441, dependent: 109, dependent conditional: 0, dependent unconditional: 109, unknown: 956, unknown conditional: 0, unknown unconditional: 956] , Statistics on independence cache: Total cache size (in pairs): 121, Positive cache size: 105, Positive conditional cache size: 0, Positive unconditional cache size: 105, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (21states, 78/202 universal loopers) in iteration 49,while PetriNetUnfolder was constructing finite prefix that currently has 7481 conditions, 1011 events (288/1010 cut-off events. For 51939/52044 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 9573 event pairs, 138 based on Foata normal form. 42/1189 useless extension candidates. Maximal degree in co-relation 7268. Up to 314 conditions per place.). - TimeoutResultAtElement [Line: 41]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (21states, 78/202 universal loopers) in iteration 49,while PetriNetUnfolder was constructing finite prefix that currently has 7481 conditions, 1011 events (288/1010 cut-off events. For 51939/52044 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 9573 event pairs, 138 based on Foata normal form. 42/1189 useless extension candidates. Maximal degree in co-relation 7268. Up to 314 conditions per place.). - TimeoutResultAtElement [Line: 43]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (21states, 78/202 universal loopers) in iteration 49,while PetriNetUnfolder was constructing finite prefix that currently has 7481 conditions, 1011 events (288/1010 cut-off events. For 51939/52044 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 9573 event pairs, 138 based on Foata normal form. 42/1189 useless extension candidates. Maximal degree in co-relation 7268. Up to 314 conditions per place.). - TimeoutResultAtElement [Line: 43]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (21states, 78/202 universal loopers) in iteration 49,while PetriNetUnfolder was constructing finite prefix that currently has 7481 conditions, 1011 events (288/1010 cut-off events. For 51939/52044 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 9573 event pairs, 138 based on Foata normal form. 42/1189 useless extension candidates. Maximal degree in co-relation 7268. Up to 314 conditions per place.). - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (21states, 78/202 universal loopers) in iteration 49,while PetriNetUnfolder was constructing finite prefix that currently has 7481 conditions, 1011 events (288/1010 cut-off events. For 51939/52044 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 9573 event pairs, 138 based on Foata normal form. 42/1189 useless extension candidates. Maximal degree in co-relation 7268. Up to 314 conditions per place.). - TimeoutResultAtElement [Line: 53]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (21states, 78/202 universal loopers) in iteration 49,while PetriNetUnfolder was constructing finite prefix that currently has 7481 conditions, 1011 events (288/1010 cut-off events. For 51939/52044 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 9573 event pairs, 138 based on Foata normal form. 42/1189 useless extension candidates. Maximal degree in co-relation 7268. Up to 314 conditions per place.). - TimeoutResultAtElement [Line: 54]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (21states, 78/202 universal loopers) in iteration 49,while PetriNetUnfolder was constructing finite prefix that currently has 7481 conditions, 1011 events (288/1010 cut-off events. For 51939/52044 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 9573 event pairs, 138 based on Foata normal form. 42/1189 useless extension candidates. Maximal degree in co-relation 7268. Up to 314 conditions per place.). - TimeoutResultAtElement [Line: 54]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (21states, 78/202 universal loopers) in iteration 49,while PetriNetUnfolder was constructing finite prefix that currently has 7481 conditions, 1011 events (288/1010 cut-off events. For 51939/52044 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 9573 event pairs, 138 based on Foata normal form. 42/1189 useless extension candidates. Maximal degree in co-relation 7268. Up to 314 conditions per place.). - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (21states, 78/202 universal loopers) in iteration 49,while PetriNetUnfolder was constructing finite prefix that currently has 7481 conditions, 1011 events (288/1010 cut-off events. For 51939/52044 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 9573 event pairs, 138 based on Foata normal form. 42/1189 useless extension candidates. Maximal degree in co-relation 7268. Up to 314 conditions per place.). - TimeoutResultAtElement [Line: 69]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (21states, 78/202 universal loopers) in iteration 49,while PetriNetUnfolder was constructing finite prefix that currently has 7481 conditions, 1011 events (288/1010 cut-off events. For 51939/52044 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 9573 event pairs, 138 based on Foata normal form. 42/1189 useless extension candidates. Maximal degree in co-relation 7268. Up to 314 conditions per place.). - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (21states, 78/202 universal loopers) in iteration 49,while PetriNetUnfolder was constructing finite prefix that currently has 7481 conditions, 1011 events (288/1010 cut-off events. For 51939/52044 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 9573 event pairs, 138 based on Foata normal form. 42/1189 useless extension candidates. Maximal degree in co-relation 7268. Up to 314 conditions per place.). - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (21states, 78/202 universal loopers) in iteration 49,while PetriNetUnfolder was constructing finite prefix that currently has 7481 conditions, 1011 events (288/1010 cut-off events. For 51939/52044 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 9573 event pairs, 138 based on Foata normal form. 42/1189 useless extension candidates. Maximal degree in co-relation 7268. Up to 314 conditions per place.). - TimeoutResultAtElement [Line: 67]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (21states, 78/202 universal loopers) in iteration 49,while PetriNetUnfolder was constructing finite prefix that currently has 7481 conditions, 1011 events (288/1010 cut-off events. For 51939/52044 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 9573 event pairs, 138 based on Foata normal form. 42/1189 useless extension candidates. Maximal degree in co-relation 7268. Up to 314 conditions per place.). - TimeoutResultAtElement [Line: 68]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (21states, 78/202 universal loopers) in iteration 49,while PetriNetUnfolder was constructing finite prefix that currently has 7481 conditions, 1011 events (288/1010 cut-off events. For 51939/52044 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 9573 event pairs, 138 based on Foata normal form. 42/1189 useless extension candidates. Maximal degree in co-relation 7268. Up to 314 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 136 locations, 21 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 837.5s, OverallIterations: 49, TraceHistogramMax: 5, PathProgramHistogramMax: 40, EmptinessCheckTime: 0.0s, AutomataDifference: 811.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1957 SdHoareTripleChecker+Valid, 7.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1957 mSDsluCounter, 478 SdHoareTripleChecker+Invalid, 5.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 306 mSDsCounter, 340 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14311 IncrementalHoareTripleChecker+Invalid, 14651 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 340 mSolverCounterUnsat, 172 mSDtfsCounter, 14311 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3411 GetRequests, 2073 SyntacticMatches, 216 SemanticMatches, 1122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12514 ImplicationChecksByTransitivity, 8.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=166896occurred in iteration=48, InterpolantAutomatonStates: 960, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 9.7s InterpolantComputationTime, 2607 NumberOfCodeBlocks, 2583 NumberOfCodeBlocksAsserted, 161 NumberOfCheckSat, 3731 ConstructedInterpolants, 0 QuantifiedInterpolants, 14877 SizeOfPredicates, 39 NumberOfNonLiveVariables, 7514 ConjunctsInSsa, 359 ConjunctsInUnsatCore, 133 InterpolantComputations, 7 PerfectInterpolantSequences, 862/3053 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown