/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-nonblocking-cntr.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 06:51:16,716 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 06:51:16,778 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 06:51:16,782 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 06:51:16,783 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 06:51:16,805 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 06:51:16,805 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 06:51:16,805 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 06:51:16,806 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 06:51:16,809 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 06:51:16,809 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 06:51:16,809 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 06:51:16,809 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 06:51:16,810 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 06:51:16,810 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 06:51:16,810 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 06:51:16,811 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 06:51:16,811 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 06:51:16,811 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 06:51:16,811 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 06:51:16,811 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 06:51:16,812 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 06:51:16,812 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 06:51:16,812 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 06:51:16,812 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 06:51:16,813 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 06:51:16,813 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 06:51:16,813 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 06:51:16,813 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 06:51:16,813 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 06:51:16,814 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 06:51:16,814 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 06:51:16,814 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 06:51:16,814 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 06:51:16,814 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 06:51:16,815 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 06:51:17,041 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 06:51:17,059 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 06:51:17,061 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 06:51:17,061 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 06:51:17,062 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 06:51:17,063 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-nonblocking-cntr.wvr.c [2023-08-25 06:51:18,116 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 06:51:18,307 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 06:51:18,308 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr.wvr.c [2023-08-25 06:51:18,313 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aba1fa485/a84330704275434c887f91c21bc32ae3/FLAGe14fee36e [2023-08-25 06:51:18,324 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aba1fa485/a84330704275434c887f91c21bc32ae3 [2023-08-25 06:51:18,327 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 06:51:18,328 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 06:51:18,329 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 06:51:18,329 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 06:51:18,331 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 06:51:18,332 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 06:51:18" (1/1) ... [2023-08-25 06:51:18,333 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a8ef631 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:51:18, skipping insertion in model container [2023-08-25 06:51:18,333 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 06:51:18" (1/1) ... [2023-08-25 06:51:18,355 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 06:51:18,511 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 06:51:18,520 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 06:51:18,549 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 06:51:18,554 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 06:51:18,554 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 06:51:18,558 INFO L206 MainTranslator]: Completed translation [2023-08-25 06:51:18,558 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:51:18 WrapperNode [2023-08-25 06:51:18,558 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 06:51:18,559 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 06:51:18,559 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 06:51:18,559 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 06:51:18,563 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:51:18" (1/1) ... [2023-08-25 06:51:18,569 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:51:18" (1/1) ... [2023-08-25 06:51:18,595 INFO L138 Inliner]: procedures = 21, calls = 25, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 74 [2023-08-25 06:51:18,595 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 06:51:18,596 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 06:51:18,596 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 06:51:18,597 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 06:51:18,602 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:51:18" (1/1) ... [2023-08-25 06:51:18,603 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:51:18" (1/1) ... [2023-08-25 06:51:18,612 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:51:18" (1/1) ... [2023-08-25 06:51:18,613 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:51:18" (1/1) ... [2023-08-25 06:51:18,622 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:51:18" (1/1) ... [2023-08-25 06:51:18,624 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:51:18" (1/1) ... [2023-08-25 06:51:18,625 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:51:18" (1/1) ... [2023-08-25 06:51:18,625 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:51:18" (1/1) ... [2023-08-25 06:51:18,626 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 06:51:18,627 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 06:51:18,627 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 06:51:18,627 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 06:51:18,628 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:51:18" (1/1) ... [2023-08-25 06:51:18,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 06:51:18,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:51:18,652 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 06:51:18,672 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 06:51:18,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 06:51:18,684 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-25 06:51:18,684 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-25 06:51:18,685 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-25 06:51:18,685 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-25 06:51:18,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 06:51:18,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 06:51:18,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 06:51:18,685 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-25 06:51:18,685 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-25 06:51:18,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 06:51:18,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 06:51:18,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 06:51:18,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 06:51:18,686 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 06:51:18,783 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 06:51:18,784 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 06:51:18,972 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 06:51:19,024 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 06:51:19,024 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-25 06:51:19,026 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 06:51:19 BoogieIcfgContainer [2023-08-25 06:51:19,026 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 06:51:19,028 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 06:51:19,028 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 06:51:19,031 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 06:51:19,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 06:51:18" (1/3) ... [2023-08-25 06:51:19,031 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e57e543 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 06:51:19, skipping insertion in model container [2023-08-25 06:51:19,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:51:18" (2/3) ... [2023-08-25 06:51:19,032 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e57e543 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 06:51:19, skipping insertion in model container [2023-08-25 06:51:19,032 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 06:51:19" (3/3) ... [2023-08-25 06:51:19,033 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr.wvr.c [2023-08-25 06:51:19,046 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 06:51:19,046 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2023-08-25 06:51:19,046 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 06:51:19,105 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-25 06:51:19,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 112 transitions, 240 flow [2023-08-25 06:51:19,165 INFO L124 PetriNetUnfolderBase]: 6/110 cut-off events. [2023-08-25 06:51:19,165 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 06:51:19,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 110 events. 6/110 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 93 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2023-08-25 06:51:19,169 INFO L82 GeneralOperation]: Start removeDead. Operand has 113 places, 112 transitions, 240 flow [2023-08-25 06:51:19,172 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 101 transitions, 214 flow [2023-08-25 06:51:19,174 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 06:51:19,192 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 101 transitions, 214 flow [2023-08-25 06:51:19,193 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 102 places, 101 transitions, 214 flow [2023-08-25 06:51:19,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 101 transitions, 214 flow [2023-08-25 06:51:19,210 INFO L124 PetriNetUnfolderBase]: 6/101 cut-off events. [2023-08-25 06:51:19,210 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 06:51:19,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 101 events. 6/101 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 92 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2023-08-25 06:51:19,212 INFO L119 LiptonReduction]: Number of co-enabled transitions 1364 [2023-08-25 06:51:21,380 INFO L134 LiptonReduction]: Checked pairs total: 3792 [2023-08-25 06:51:21,380 INFO L136 LiptonReduction]: Total number of compositions: 99 [2023-08-25 06:51:21,390 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 06:51:21,394 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;@30f8df52, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 06:51:21,394 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-25 06:51:21,395 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 06:51:21,395 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-25 06:51:21,395 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 06:51:21,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:51:21,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-25 06:51:21,395 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 06:51:21,398 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:51:21,398 INFO L85 PathProgramCache]: Analyzing trace with hash 470, now seen corresponding path program 1 times [2023-08-25 06:51:21,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:51:21,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668793429] [2023-08-25 06:51:21,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:51:21,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:51:21,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:51:21,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:51:21,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:51:21,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668793429] [2023-08-25 06:51:21,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668793429] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 06:51:21,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 06:51:21,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-25 06:51:21,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464679967] [2023-08-25 06:51:21,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 06:51:21,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 06:51:21,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:51:21,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 06:51:21,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 06:51:21,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 211 [2023-08-25 06:51:21,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 33 transitions, 78 flow. Second operand has 2 states, 2 states have (on average 96.5) internal successors, (193), 2 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:21,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:51:21,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 211 [2023-08-25 06:51:21,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:51:21,521 INFO L124 PetriNetUnfolderBase]: 57/116 cut-off events. [2023-08-25 06:51:21,521 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-25 06:51:21,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 116 events. 57/116 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 407 event pairs, 27 based on Foata normal form. 29/119 useless extension candidates. Maximal degree in co-relation 172. Up to 95 conditions per place. [2023-08-25 06:51:21,523 INFO L140 encePairwiseOnDemand]: 199/211 looper letters, 14 selfloop transitions, 0 changer transitions 0/21 dead transitions. [2023-08-25 06:51:21,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 21 transitions, 82 flow [2023-08-25 06:51:21,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 06:51:21,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 06:51:21,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 218 transitions. [2023-08-25 06:51:21,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5165876777251185 [2023-08-25 06:51:21,536 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 218 transitions. [2023-08-25 06:51:21,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 218 transitions. [2023-08-25 06:51:21,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:51:21,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 218 transitions. [2023-08-25 06:51:21,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 109.0) internal successors, (218), 2 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:21,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:21,544 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:21,545 INFO L175 Difference]: Start difference. First operand has 36 places, 33 transitions, 78 flow. Second operand 2 states and 218 transitions. [2023-08-25 06:51:21,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 21 transitions, 82 flow [2023-08-25 06:51:21,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 21 transitions, 74 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 06:51:21,548 INFO L231 Difference]: Finished difference. Result has 23 places, 21 transitions, 46 flow [2023-08-25 06:51:21,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, 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 06:51:21,552 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -13 predicate places. [2023-08-25 06:51:21,552 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 21 transitions, 46 flow [2023-08-25 06:51:21,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 96.5) internal successors, (193), 2 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:21,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:51:21,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-25 06:51:21,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 06:51:21,553 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 06:51:21,553 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:51:21,553 INFO L85 PathProgramCache]: Analyzing trace with hash 447231485, now seen corresponding path program 1 times [2023-08-25 06:51:21,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:51:21,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994006981] [2023-08-25 06:51:21,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:51:21,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:51:21,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:51:21,600 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 06:51:21,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:51:21,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994006981] [2023-08-25 06:51:21,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994006981] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 06:51:21,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 06:51:21,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 06:51:21,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590427316] [2023-08-25 06:51:21,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 06:51:21,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 06:51:21,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:51:21,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 06:51:21,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 06:51:21,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 211 [2023-08-25 06:51:21,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 21 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:21,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:51:21,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 211 [2023-08-25 06:51:21,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:51:21,638 INFO L124 PetriNetUnfolderBase]: 90/163 cut-off events. [2023-08-25 06:51:21,638 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-25 06:51:21,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 163 events. 90/163 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 498 event pairs, 66 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 329. Up to 160 conditions per place. [2023-08-25 06:51:21,639 INFO L140 encePairwiseOnDemand]: 208/211 looper letters, 16 selfloop transitions, 1 changer transitions 0/19 dead transitions. [2023-08-25 06:51:21,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 19 transitions, 76 flow [2023-08-25 06:51:21,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 06:51:21,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 06:51:21,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 271 transitions. [2023-08-25 06:51:21,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42812006319115326 [2023-08-25 06:51:21,641 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 271 transitions. [2023-08-25 06:51:21,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 271 transitions. [2023-08-25 06:51:21,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:51:21,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 271 transitions. [2023-08-25 06:51:21,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:21,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:21,644 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:21,644 INFO L175 Difference]: Start difference. First operand has 23 places, 21 transitions, 46 flow. Second operand 3 states and 271 transitions. [2023-08-25 06:51:21,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 19 transitions, 76 flow [2023-08-25 06:51:21,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 19 transitions, 76 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 06:51:21,645 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 44 flow [2023-08-25 06:51:21,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=44, PETRI_PLACES=23, PETRI_TRANSITIONS=19} [2023-08-25 06:51:21,645 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -13 predicate places. [2023-08-25 06:51:21,646 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 44 flow [2023-08-25 06:51:21,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:21,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:51:21,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:51:21,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 06:51:21,646 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 06:51:21,647 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:51:21,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1606535601, now seen corresponding path program 1 times [2023-08-25 06:51:21,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:51:21,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005317965] [2023-08-25 06:51:21,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:51:21,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:51:21,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:51:21,825 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 06:51:21,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:51:21,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005317965] [2023-08-25 06:51:21,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005317965] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 06:51:21,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 06:51:21,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-25 06:51:21,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903322662] [2023-08-25 06:51:21,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 06:51:21,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 06:51:21,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:51:21,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 06:51:21,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 06:51:21,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 211 [2023-08-25 06:51:21,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:21,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:51:21,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 211 [2023-08-25 06:51:21,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:51:21,882 INFO L124 PetriNetUnfolderBase]: 79/166 cut-off events. [2023-08-25 06:51:21,882 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-25 06:51:21,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 313 conditions, 166 events. 79/166 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 655 event pairs, 19 based on Foata normal form. 1/137 useless extension candidates. Maximal degree in co-relation 309. Up to 82 conditions per place. [2023-08-25 06:51:21,883 INFO L140 encePairwiseOnDemand]: 208/211 looper letters, 19 selfloop transitions, 2 changer transitions 4/30 dead transitions. [2023-08-25 06:51:21,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 30 transitions, 119 flow [2023-08-25 06:51:21,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 06:51:21,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 06:51:21,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 308 transitions. [2023-08-25 06:51:21,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48657187993680884 [2023-08-25 06:51:21,887 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 308 transitions. [2023-08-25 06:51:21,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 308 transitions. [2023-08-25 06:51:21,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:51:21,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 308 transitions. [2023-08-25 06:51:21,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:21,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:21,890 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:21,890 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 44 flow. Second operand 3 states and 308 transitions. [2023-08-25 06:51:21,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 30 transitions, 119 flow [2023-08-25 06:51:21,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 30 transitions, 118 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 06:51:21,892 INFO L231 Difference]: Finished difference. Result has 25 places, 20 transitions, 55 flow [2023-08-25 06:51:21,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=55, PETRI_PLACES=25, PETRI_TRANSITIONS=20} [2023-08-25 06:51:21,893 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -11 predicate places. [2023-08-25 06:51:21,893 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 20 transitions, 55 flow [2023-08-25 06:51:21,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:21,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:51:21,894 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 06:51:21,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 06:51:21,897 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 06:51:21,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:51:21,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1641837371, now seen corresponding path program 1 times [2023-08-25 06:51:21,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:51:21,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248951535] [2023-08-25 06:51:21,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:51:21,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:51:21,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:51:22,019 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 06:51:22,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:51:22,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248951535] [2023-08-25 06:51:22,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248951535] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 06:51:22,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 06:51:22,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 06:51:22,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798615512] [2023-08-25 06:51:22,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 06:51:22,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 06:51:22,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:51:22,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 06:51:22,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-25 06:51:22,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 211 [2023-08-25 06:51:22,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 55 flow. Second operand has 5 states, 5 states have (on average 86.8) internal successors, (434), 5 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:22,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:51:22,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 211 [2023-08-25 06:51:22,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:51:22,107 INFO L124 PetriNetUnfolderBase]: 145/293 cut-off events. [2023-08-25 06:51:22,108 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2023-08-25 06:51:22,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 618 conditions, 293 events. 145/293 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1316 event pairs, 63 based on Foata normal form. 2/256 useless extension candidates. Maximal degree in co-relation 613. Up to 158 conditions per place. [2023-08-25 06:51:22,109 INFO L140 encePairwiseOnDemand]: 205/211 looper letters, 32 selfloop transitions, 3 changer transitions 3/41 dead transitions. [2023-08-25 06:51:22,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 41 transitions, 188 flow [2023-08-25 06:51:22,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 06:51:22,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 06:51:22,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 456 transitions. [2023-08-25 06:51:22,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4322274881516588 [2023-08-25 06:51:22,112 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 456 transitions. [2023-08-25 06:51:22,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 456 transitions. [2023-08-25 06:51:22,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:51:22,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 456 transitions. [2023-08-25 06:51:22,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.2) internal successors, (456), 5 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:22,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:22,114 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:22,114 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 55 flow. Second operand 5 states and 456 transitions. [2023-08-25 06:51:22,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 41 transitions, 188 flow [2023-08-25 06:51:22,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 41 transitions, 184 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 06:51:22,116 INFO L231 Difference]: Finished difference. Result has 31 places, 22 transitions, 77 flow [2023-08-25 06:51:22,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=77, PETRI_PLACES=31, PETRI_TRANSITIONS=22} [2023-08-25 06:51:22,116 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -5 predicate places. [2023-08-25 06:51:22,116 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 22 transitions, 77 flow [2023-08-25 06:51:22,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.8) internal successors, (434), 5 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:22,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:51:22,117 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 06:51:22,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 06:51:22,117 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 06:51:22,117 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:51:22,117 INFO L85 PathProgramCache]: Analyzing trace with hash -69309341, now seen corresponding path program 2 times [2023-08-25 06:51:22,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:51:22,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417289340] [2023-08-25 06:51:22,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:51:22,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:51:22,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:51:22,181 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 06:51:22,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:51:22,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417289340] [2023-08-25 06:51:22,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417289340] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:51:22,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904486593] [2023-08-25 06:51:22,182 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 06:51:22,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:51:22,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:51:22,185 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 06:51:22,186 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 06:51:22,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-25 06:51:22,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:51:22,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-25 06:51:22,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:51:22,310 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 06:51:22,310 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 06:51:22,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904486593] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 06:51:22,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 06:51:22,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-08-25 06:51:22,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440486409] [2023-08-25 06:51:22,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 06:51:22,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 06:51:22,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:51:22,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 06:51:22,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-25 06:51:22,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 211 [2023-08-25 06:51:22,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 22 transitions, 77 flow. Second operand has 4 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:22,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:51:22,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 211 [2023-08-25 06:51:22,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:51:22,365 INFO L124 PetriNetUnfolderBase]: 105/210 cut-off events. [2023-08-25 06:51:22,365 INFO L125 PetriNetUnfolderBase]: For 178/178 co-relation queries the response was YES. [2023-08-25 06:51:22,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 546 conditions, 210 events. 105/210 cut-off events. For 178/178 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 938 event pairs, 51 based on Foata normal form. 12/208 useless extension candidates. Maximal degree in co-relation 538. Up to 133 conditions per place. [2023-08-25 06:51:22,366 INFO L140 encePairwiseOnDemand]: 207/211 looper letters, 21 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2023-08-25 06:51:22,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 28 transitions, 142 flow [2023-08-25 06:51:22,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 06:51:22,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 06:51:22,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 375 transitions. [2023-08-25 06:51:22,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4443127962085308 [2023-08-25 06:51:22,368 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 375 transitions. [2023-08-25 06:51:22,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 375 transitions. [2023-08-25 06:51:22,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:51:22,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 375 transitions. [2023-08-25 06:51:22,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:22,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 211.0) internal successors, (1055), 5 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:22,370 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 211.0) internal successors, (1055), 5 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:22,370 INFO L175 Difference]: Start difference. First operand has 31 places, 22 transitions, 77 flow. Second operand 4 states and 375 transitions. [2023-08-25 06:51:22,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 28 transitions, 142 flow [2023-08-25 06:51:22,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 28 transitions, 130 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-08-25 06:51:22,372 INFO L231 Difference]: Finished difference. Result has 29 places, 21 transitions, 69 flow [2023-08-25 06:51:22,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=69, PETRI_PLACES=29, PETRI_TRANSITIONS=21} [2023-08-25 06:51:22,372 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -7 predicate places. [2023-08-25 06:51:22,372 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 21 transitions, 69 flow [2023-08-25 06:51:22,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:22,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:51:22,373 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:51:22,385 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-25 06:51:22,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:51:22,574 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 06:51:22,574 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:51:22,574 INFO L85 PathProgramCache]: Analyzing trace with hash -458399734, now seen corresponding path program 1 times [2023-08-25 06:51:22,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:51:22,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317145353] [2023-08-25 06:51:22,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:51:22,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:51:22,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:51:22,724 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:51:22,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:51:22,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317145353] [2023-08-25 06:51:22,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317145353] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:51:22,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584753113] [2023-08-25 06:51:22,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:51:22,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:51:22,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:51:22,741 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 06:51:22,762 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 06:51:22,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:51:22,818 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-25 06:51:22,820 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:51:22,864 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:51:22,865 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:51:23,040 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:51:23,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584753113] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:51:23,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:51:23,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 3] total 4 [2023-08-25 06:51:23,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943734740] [2023-08-25 06:51:23,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:51:23,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 06:51:23,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:51:23,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 06:51:23,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-25 06:51:23,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 211 [2023-08-25 06:51:23,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 21 transitions, 69 flow. Second operand has 6 states, 6 states have (on average 97.66666666666667) internal successors, (586), 6 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:23,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:51:23,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 211 [2023-08-25 06:51:23,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:51:23,114 INFO L124 PetriNetUnfolderBase]: 157/345 cut-off events. [2023-08-25 06:51:23,115 INFO L125 PetriNetUnfolderBase]: For 139/152 co-relation queries the response was YES. [2023-08-25 06:51:23,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 777 conditions, 345 events. 157/345 cut-off events. For 139/152 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1676 event pairs, 41 based on Foata normal form. 14/351 useless extension candidates. Maximal degree in co-relation 771. Up to 118 conditions per place. [2023-08-25 06:51:23,116 INFO L140 encePairwiseOnDemand]: 207/211 looper letters, 31 selfloop transitions, 6 changer transitions 4/46 dead transitions. [2023-08-25 06:51:23,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 46 transitions, 229 flow [2023-08-25 06:51:23,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 06:51:23,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 06:51:23,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 414 transitions. [2023-08-25 06:51:23,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.490521327014218 [2023-08-25 06:51:23,118 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 414 transitions. [2023-08-25 06:51:23,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 414 transitions. [2023-08-25 06:51:23,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:51:23,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 414 transitions. [2023-08-25 06:51:23,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 103.5) internal successors, (414), 4 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:23,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 211.0) internal successors, (1055), 5 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:23,120 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 211.0) internal successors, (1055), 5 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:23,120 INFO L175 Difference]: Start difference. First operand has 29 places, 21 transitions, 69 flow. Second operand 4 states and 414 transitions. [2023-08-25 06:51:23,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 46 transitions, 229 flow [2023-08-25 06:51:23,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 46 transitions, 219 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-25 06:51:23,121 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 109 flow [2023-08-25 06:51:23,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=109, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2023-08-25 06:51:23,122 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -5 predicate places. [2023-08-25 06:51:23,122 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 109 flow [2023-08-25 06:51:23,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 97.66666666666667) internal successors, (586), 6 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:23,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:51:23,122 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 06:51:23,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-25 06:51:23,327 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,SelfDestructingSolverStorable5 [2023-08-25 06:51:23,327 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 06:51:23,327 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:51:23,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1457812748, now seen corresponding path program 2 times [2023-08-25 06:51:23,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:51:23,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647591550] [2023-08-25 06:51:23,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:51:23,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:51:23,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:51:23,374 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:51:23,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:51:23,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647591550] [2023-08-25 06:51:23,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647591550] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:51:23,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580541669] [2023-08-25 06:51:23,375 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 06:51:23,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:51:23,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:51:23,376 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 06:51:23,378 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 06:51:23,434 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 06:51:23,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:51:23,449 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 06:51:23,451 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:51:23,499 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:51:23,502 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:51:23,575 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:51:23,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580541669] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:51:23,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:51:23,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 9 [2023-08-25 06:51:23,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737073859] [2023-08-25 06:51:23,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:51:23,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-25 06:51:23,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:51:23,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-25 06:51:23,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-25 06:51:23,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 211 [2023-08-25 06:51:23,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 109 flow. Second operand has 10 states, 10 states have (on average 88.8) internal successors, (888), 10 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:23,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:51:23,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 211 [2023-08-25 06:51:23,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:51:23,709 INFO L124 PetriNetUnfolderBase]: 221/474 cut-off events. [2023-08-25 06:51:23,709 INFO L125 PetriNetUnfolderBase]: For 425/425 co-relation queries the response was YES. [2023-08-25 06:51:23,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1237 conditions, 474 events. 221/474 cut-off events. For 425/425 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2350 event pairs, 25 based on Foata normal form. 18/487 useless extension candidates. Maximal degree in co-relation 1229. Up to 192 conditions per place. [2023-08-25 06:51:23,711 INFO L140 encePairwiseOnDemand]: 205/211 looper letters, 36 selfloop transitions, 15 changer transitions 9/64 dead transitions. [2023-08-25 06:51:23,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 64 transitions, 379 flow [2023-08-25 06:51:23,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-25 06:51:23,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-25 06:51:23,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 652 transitions. [2023-08-25 06:51:23,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4414353419092756 [2023-08-25 06:51:23,713 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 652 transitions. [2023-08-25 06:51:23,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 652 transitions. [2023-08-25 06:51:23,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:51:23,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 652 transitions. [2023-08-25 06:51:23,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 93.14285714285714) internal successors, (652), 7 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:23,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 211.0) internal successors, (1688), 8 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:23,716 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 211.0) internal successors, (1688), 8 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:23,716 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 109 flow. Second operand 7 states and 652 transitions. [2023-08-25 06:51:23,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 64 transitions, 379 flow [2023-08-25 06:51:23,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 64 transitions, 377 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-25 06:51:23,720 INFO L231 Difference]: Finished difference. Result has 42 places, 36 transitions, 240 flow [2023-08-25 06:51:23,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=240, PETRI_PLACES=42, PETRI_TRANSITIONS=36} [2023-08-25 06:51:23,721 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 6 predicate places. [2023-08-25 06:51:23,721 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 36 transitions, 240 flow [2023-08-25 06:51:23,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 88.8) internal successors, (888), 10 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:23,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:51:23,722 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 06:51:23,726 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 06:51:23,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:51:23,927 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 06:51:23,927 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:51:23,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1998797512, now seen corresponding path program 3 times [2023-08-25 06:51:23,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:51:23,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919940314] [2023-08-25 06:51:23,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:51:23,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:51:23,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:51:24,063 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 06:51:24,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:51:24,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919940314] [2023-08-25 06:51:24,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919940314] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:51:24,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230924594] [2023-08-25 06:51:24,063 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 06:51:24,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:51:24,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:51:24,070 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 06:51:24,072 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 06:51:24,138 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-25 06:51:24,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:51:24,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-25 06:51:24,140 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:51:24,229 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 06:51:24,229 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:51:24,330 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 06:51:24,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230924594] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:51:24,332 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:51:24,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 18 [2023-08-25 06:51:24,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766236600] [2023-08-25 06:51:24,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:51:24,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-25 06:51:24,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:51:24,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-25 06:51:24,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2023-08-25 06:51:24,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 211 [2023-08-25 06:51:24,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 36 transitions, 240 flow. Second operand has 18 states, 18 states have (on average 84.05555555555556) internal successors, (1513), 18 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:24,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:51:24,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 211 [2023-08-25 06:51:24,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:51:24,976 INFO L124 PetriNetUnfolderBase]: 455/973 cut-off events. [2023-08-25 06:51:24,976 INFO L125 PetriNetUnfolderBase]: For 1929/1937 co-relation queries the response was YES. [2023-08-25 06:51:24,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3006 conditions, 973 events. 455/973 cut-off events. For 1929/1937 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5303 event pairs, 6 based on Foata normal form. 46/1016 useless extension candidates. Maximal degree in co-relation 2993. Up to 171 conditions per place. [2023-08-25 06:51:24,983 INFO L140 encePairwiseOnDemand]: 203/211 looper letters, 97 selfloop transitions, 64 changer transitions 22/186 dead transitions. [2023-08-25 06:51:24,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 186 transitions, 1317 flow [2023-08-25 06:51:24,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-25 06:51:24,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-25 06:51:24,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2375 transitions. [2023-08-25 06:51:24,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4168860803931894 [2023-08-25 06:51:24,988 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2375 transitions. [2023-08-25 06:51:24,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2375 transitions. [2023-08-25 06:51:24,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:51:24,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2375 transitions. [2023-08-25 06:51:24,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 87.96296296296296) internal successors, (2375), 27 states have internal predecessors, (2375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:24,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 211.0) internal successors, (5908), 28 states have internal predecessors, (5908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:24,999 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 211.0) internal successors, (5908), 28 states have internal predecessors, (5908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:24,999 INFO L175 Difference]: Start difference. First operand has 42 places, 36 transitions, 240 flow. Second operand 27 states and 2375 transitions. [2023-08-25 06:51:25,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 186 transitions, 1317 flow [2023-08-25 06:51:25,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 186 transitions, 1255 flow, removed 28 selfloop flow, removed 1 redundant places. [2023-08-25 06:51:25,006 INFO L231 Difference]: Finished difference. Result has 76 places, 88 transitions, 787 flow [2023-08-25 06:51:25,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=787, PETRI_PLACES=76, PETRI_TRANSITIONS=88} [2023-08-25 06:51:25,008 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 40 predicate places. [2023-08-25 06:51:25,008 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 88 transitions, 787 flow [2023-08-25 06:51:25,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 84.05555555555556) internal successors, (1513), 18 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:25,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:51:25,009 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 06:51:25,016 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-25 06:51:25,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:51:25,216 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 06:51:25,216 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:51:25,216 INFO L85 PathProgramCache]: Analyzing trace with hash -779332556, now seen corresponding path program 4 times [2023-08-25 06:51:25,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:51:25,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402587196] [2023-08-25 06:51:25,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:51:25,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:51:25,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:51:25,312 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 06:51:25,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:51:25,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402587196] [2023-08-25 06:51:25,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402587196] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:51:25,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462501260] [2023-08-25 06:51:25,313 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 06:51:25,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:51:25,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:51:25,315 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 06:51:25,317 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 06:51:25,365 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 06:51:25,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:51:25,366 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 06:51:25,367 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:51:25,466 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 06:51:25,466 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:51:25,535 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 06:51:25,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462501260] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:51:25,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:51:25,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-25 06:51:25,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234315343] [2023-08-25 06:51:25,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:51:25,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-25 06:51:25,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:51:25,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-25 06:51:25,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2023-08-25 06:51:25,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 211 [2023-08-25 06:51:25,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 88 transitions, 787 flow. Second operand has 16 states, 16 states have (on average 84.3125) internal successors, (1349), 16 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:25,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:51:25,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 211 [2023-08-25 06:51:25,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:51:25,990 INFO L124 PetriNetUnfolderBase]: 584/1248 cut-off events. [2023-08-25 06:51:25,990 INFO L125 PetriNetUnfolderBase]: For 6571/6595 co-relation queries the response was YES. [2023-08-25 06:51:25,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5136 conditions, 1248 events. 584/1248 cut-off events. For 6571/6595 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 7514 event pairs, 15 based on Foata normal form. 58/1306 useless extension candidates. Maximal degree in co-relation 5114. Up to 209 conditions per place. [2023-08-25 06:51:25,998 INFO L140 encePairwiseOnDemand]: 203/211 looper letters, 121 selfloop transitions, 126 changer transitions 6/256 dead transitions. [2023-08-25 06:51:25,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 256 transitions, 2466 flow [2023-08-25 06:51:25,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-25 06:51:25,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-08-25 06:51:26,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2537 transitions. [2023-08-25 06:51:26,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41461023042980877 [2023-08-25 06:51:26,004 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2537 transitions. [2023-08-25 06:51:26,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2537 transitions. [2023-08-25 06:51:26,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:51:26,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2537 transitions. [2023-08-25 06:51:26,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 87.48275862068965) internal successors, (2537), 29 states have internal predecessors, (2537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:26,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 211.0) internal successors, (6330), 30 states have internal predecessors, (6330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:26,014 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 211.0) internal successors, (6330), 30 states have internal predecessors, (6330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:26,014 INFO L175 Difference]: Start difference. First operand has 76 places, 88 transitions, 787 flow. Second operand 29 states and 2537 transitions. [2023-08-25 06:51:26,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 256 transitions, 2466 flow [2023-08-25 06:51:26,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 256 transitions, 2316 flow, removed 57 selfloop flow, removed 5 redundant places. [2023-08-25 06:51:26,030 INFO L231 Difference]: Finished difference. Result has 112 places, 166 transitions, 1862 flow [2023-08-25 06:51:26,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=1862, PETRI_PLACES=112, PETRI_TRANSITIONS=166} [2023-08-25 06:51:26,031 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 76 predicate places. [2023-08-25 06:51:26,031 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 166 transitions, 1862 flow [2023-08-25 06:51:26,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 84.3125) internal successors, (1349), 16 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:26,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:51:26,032 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 06:51:26,039 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 06:51:26,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:51:26,241 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 06:51:26,241 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:51:26,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1170706268, now seen corresponding path program 5 times [2023-08-25 06:51:26,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:51:26,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512603576] [2023-08-25 06:51:26,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:51:26,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:51:26,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:51:26,314 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 06:51:26,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:51:26,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512603576] [2023-08-25 06:51:26,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512603576] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:51:26,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304978092] [2023-08-25 06:51:26,314 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 06:51:26,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:51:26,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:51:26,315 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 06:51:26,317 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 06:51:26,372 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-25 06:51:26,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:51:26,373 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-25 06:51:26,374 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:51:26,447 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 06:51:26,447 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:51:26,527 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 06:51:26,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304978092] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:51:26,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:51:26,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 16 [2023-08-25 06:51:26,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627339887] [2023-08-25 06:51:26,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:51:26,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-25 06:51:26,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:51:26,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-25 06:51:26,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2023-08-25 06:51:26,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 211 [2023-08-25 06:51:26,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 166 transitions, 1862 flow. Second operand has 16 states, 16 states have (on average 84.4375) internal successors, (1351), 16 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:26,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:51:26,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 211 [2023-08-25 06:51:26,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:51:26,831 INFO L124 PetriNetUnfolderBase]: 600/1245 cut-off events. [2023-08-25 06:51:26,831 INFO L125 PetriNetUnfolderBase]: For 10830/10878 co-relation queries the response was YES. [2023-08-25 06:51:26,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6259 conditions, 1245 events. 600/1245 cut-off events. For 10830/10878 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 7229 event pairs, 46 based on Foata normal form. 32/1276 useless extension candidates. Maximal degree in co-relation 6225. Up to 485 conditions per place. [2023-08-25 06:51:26,839 INFO L140 encePairwiseOnDemand]: 204/211 looper letters, 122 selfloop transitions, 95 changer transitions 0/220 dead transitions. [2023-08-25 06:51:26,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 220 transitions, 2783 flow [2023-08-25 06:51:26,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-25 06:51:26,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-25 06:51:26,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1395 transitions. [2023-08-25 06:51:26,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41321090047393366 [2023-08-25 06:51:26,843 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1395 transitions. [2023-08-25 06:51:26,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1395 transitions. [2023-08-25 06:51:26,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:51:26,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1395 transitions. [2023-08-25 06:51:26,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 87.1875) internal successors, (1395), 16 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:26,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 211.0) internal successors, (3587), 17 states have internal predecessors, (3587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:26,849 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 211.0) internal successors, (3587), 17 states have internal predecessors, (3587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:26,849 INFO L175 Difference]: Start difference. First operand has 112 places, 166 transitions, 1862 flow. Second operand 16 states and 1395 transitions. [2023-08-25 06:51:26,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 220 transitions, 2783 flow [2023-08-25 06:51:26,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 220 transitions, 2398 flow, removed 153 selfloop flow, removed 3 redundant places. [2023-08-25 06:51:26,903 INFO L231 Difference]: Finished difference. Result has 126 places, 181 transitions, 1969 flow [2023-08-25 06:51:26,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=1546, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1969, PETRI_PLACES=126, PETRI_TRANSITIONS=181} [2023-08-25 06:51:26,903 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 90 predicate places. [2023-08-25 06:51:26,903 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 181 transitions, 1969 flow [2023-08-25 06:51:26,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 84.4375) internal successors, (1351), 16 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:26,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:51:26,904 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 06:51:26,915 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-25 06:51:27,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:51:27,115 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 06:51:27,115 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:51:27,115 INFO L85 PathProgramCache]: Analyzing trace with hash -688531264, now seen corresponding path program 6 times [2023-08-25 06:51:27,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:51:27,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804575271] [2023-08-25 06:51:27,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:51:27,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:51:27,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:51:27,215 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 06:51:27,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:51:27,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804575271] [2023-08-25 06:51:27,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804575271] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:51:27,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537639293] [2023-08-25 06:51:27,216 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 06:51:27,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:51:27,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:51:27,221 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 06:51:27,223 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 06:51:27,298 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-25 06:51:27,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:51:27,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-25 06:51:27,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:51:27,392 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 06:51:27,392 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:51:27,494 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 06:51:27,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537639293] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:51:27,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:51:27,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-25 06:51:27,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710675879] [2023-08-25 06:51:27,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:51:27,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-25 06:51:27,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:51:27,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-25 06:51:27,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2023-08-25 06:51:27,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 211 [2023-08-25 06:51:27,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 181 transitions, 1969 flow. Second operand has 16 states, 16 states have (on average 84.625) internal successors, (1354), 16 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:27,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:51:27,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 211 [2023-08-25 06:51:27,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:51:28,205 INFO L124 PetriNetUnfolderBase]: 847/1766 cut-off events. [2023-08-25 06:51:28,205 INFO L125 PetriNetUnfolderBase]: For 13551/13619 co-relation queries the response was YES. [2023-08-25 06:51:28,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8450 conditions, 1766 events. 847/1766 cut-off events. For 13551/13619 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 11127 event pairs, 14 based on Foata normal form. 78/1844 useless extension candidates. Maximal degree in co-relation 8414. Up to 274 conditions per place. [2023-08-25 06:51:28,217 INFO L140 encePairwiseOnDemand]: 203/211 looper letters, 126 selfloop transitions, 237 changer transitions 40/406 dead transitions. [2023-08-25 06:51:28,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 406 transitions, 4876 flow [2023-08-25 06:51:28,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-25 06:51:28,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-25 06:51:28,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2441 transitions. [2023-08-25 06:51:28,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41316858496953285 [2023-08-25 06:51:28,221 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2441 transitions. [2023-08-25 06:51:28,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2441 transitions. [2023-08-25 06:51:28,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:51:28,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2441 transitions. [2023-08-25 06:51:28,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 87.17857142857143) internal successors, (2441), 28 states have internal predecessors, (2441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:28,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 211.0) internal successors, (6119), 29 states have internal predecessors, (6119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:28,231 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 211.0) internal successors, (6119), 29 states have internal predecessors, (6119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:28,231 INFO L175 Difference]: Start difference. First operand has 126 places, 181 transitions, 1969 flow. Second operand 28 states and 2441 transitions. [2023-08-25 06:51:28,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 406 transitions, 4876 flow [2023-08-25 06:51:28,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 406 transitions, 4691 flow, removed 38 selfloop flow, removed 8 redundant places. [2023-08-25 06:51:28,273 INFO L231 Difference]: Finished difference. Result has 156 places, 283 transitions, 3809 flow [2023-08-25 06:51:28,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=1859, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=3809, PETRI_PLACES=156, PETRI_TRANSITIONS=283} [2023-08-25 06:51:28,274 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 120 predicate places. [2023-08-25 06:51:28,274 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 283 transitions, 3809 flow [2023-08-25 06:51:28,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 84.625) internal successors, (1354), 16 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:28,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:51:28,274 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 06:51:28,289 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 06:51:28,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:51:28,484 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 06:51:28,484 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:51:28,484 INFO L85 PathProgramCache]: Analyzing trace with hash -250533140, now seen corresponding path program 7 times [2023-08-25 06:51:28,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:51:28,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029094500] [2023-08-25 06:51:28,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:51:28,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:51:28,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:51:28,581 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 06:51:28,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:51:28,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029094500] [2023-08-25 06:51:28,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029094500] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:51:28,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788057111] [2023-08-25 06:51:28,582 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 06:51:28,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:51:28,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:51:28,583 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 06:51:28,585 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 06:51:28,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:51:28,649 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-25 06:51:28,656 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:51:28,739 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 06:51:28,739 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:51:28,841 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 06:51:28,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788057111] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:51:28,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:51:28,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-08-25 06:51:28,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882591801] [2023-08-25 06:51:28,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:51:28,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-25 06:51:28,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:51:28,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-25 06:51:28,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2023-08-25 06:51:28,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 211 [2023-08-25 06:51:28,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 283 transitions, 3809 flow. Second operand has 17 states, 17 states have (on average 84.70588235294117) internal successors, (1440), 17 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 06:51:28,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:51:28,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 211 [2023-08-25 06:51:28,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:51:29,360 INFO L124 PetriNetUnfolderBase]: 901/1911 cut-off events. [2023-08-25 06:51:29,360 INFO L125 PetriNetUnfolderBase]: For 20034/20100 co-relation queries the response was YES. [2023-08-25 06:51:29,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10654 conditions, 1911 events. 901/1911 cut-off events. For 20034/20100 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 12419 event pairs, 13 based on Foata normal form. 62/1973 useless extension candidates. Maximal degree in co-relation 10607. Up to 305 conditions per place. [2023-08-25 06:51:29,375 INFO L140 encePairwiseOnDemand]: 203/211 looper letters, 113 selfloop transitions, 273 changer transitions 1/390 dead transitions. [2023-08-25 06:51:29,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 390 transitions, 5690 flow [2023-08-25 06:51:29,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-25 06:51:29,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-25 06:51:29,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1827 transitions. [2023-08-25 06:51:29,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41232227488151657 [2023-08-25 06:51:29,377 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1827 transitions. [2023-08-25 06:51:29,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1827 transitions. [2023-08-25 06:51:29,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:51:29,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1827 transitions. [2023-08-25 06:51:29,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 87.0) internal successors, (1827), 21 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:29,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 211.0) internal successors, (4642), 22 states have internal predecessors, (4642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:29,383 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 211.0) internal successors, (4642), 22 states have internal predecessors, (4642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:29,383 INFO L175 Difference]: Start difference. First operand has 156 places, 283 transitions, 3809 flow. Second operand 21 states and 1827 transitions. [2023-08-25 06:51:29,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 390 transitions, 5690 flow [2023-08-25 06:51:29,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 390 transitions, 5433 flow, removed 110 selfloop flow, removed 8 redundant places. [2023-08-25 06:51:29,466 INFO L231 Difference]: Finished difference. Result has 172 places, 328 transitions, 5122 flow [2023-08-25 06:51:29,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=3601, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=226, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=5122, PETRI_PLACES=172, PETRI_TRANSITIONS=328} [2023-08-25 06:51:29,466 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 136 predicate places. [2023-08-25 06:51:29,466 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 328 transitions, 5122 flow [2023-08-25 06:51:29,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 84.70588235294117) internal successors, (1440), 17 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 06:51:29,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:51:29,467 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 06:51:29,474 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 06:51:29,674 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,SelfDestructingSolverStorable11 [2023-08-25 06:51:29,675 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 06:51:29,675 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:51:29,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1856473082, now seen corresponding path program 8 times [2023-08-25 06:51:29,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:51:29,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539982630] [2023-08-25 06:51:29,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:51:29,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:51:29,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:51:29,741 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 06:51:29,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:51:29,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539982630] [2023-08-25 06:51:29,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539982630] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:51:29,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311224156] [2023-08-25 06:51:29,741 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 06:51:29,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:51:29,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:51:29,742 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 06:51:29,744 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 06:51:29,808 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 06:51:29,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:51:29,809 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-25 06:51:29,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:51:29,877 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 06:51:29,877 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:51:29,990 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 06:51:29,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311224156] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:51:29,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:51:29,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-25 06:51:29,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755386162] [2023-08-25 06:51:29,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:51:29,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-25 06:51:29,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:51:29,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-25 06:51:29,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-08-25 06:51:29,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 211 [2023-08-25 06:51:29,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 328 transitions, 5122 flow. Second operand has 16 states, 16 states have (on average 84.4375) internal successors, (1351), 16 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:29,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:51:29,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 211 [2023-08-25 06:51:29,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:51:30,509 INFO L124 PetriNetUnfolderBase]: 985/2053 cut-off events. [2023-08-25 06:51:30,509 INFO L125 PetriNetUnfolderBase]: For 27307/27393 co-relation queries the response was YES. [2023-08-25 06:51:30,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12682 conditions, 2053 events. 985/2053 cut-off events. For 27307/27393 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 13480 event pairs, 66 based on Foata normal form. 94/2147 useless extension candidates. Maximal degree in co-relation 12633. Up to 845 conditions per place. [2023-08-25 06:51:30,532 INFO L140 encePairwiseOnDemand]: 204/211 looper letters, 191 selfloop transitions, 220 changer transitions 7/421 dead transitions. [2023-08-25 06:51:30,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 421 transitions, 7216 flow [2023-08-25 06:51:30,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-25 06:51:30,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-25 06:51:30,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1567 transitions. [2023-08-25 06:51:30,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41258557135334384 [2023-08-25 06:51:30,534 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1567 transitions. [2023-08-25 06:51:30,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1567 transitions. [2023-08-25 06:51:30,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:51:30,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1567 transitions. [2023-08-25 06:51:30,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 87.05555555555556) internal successors, (1567), 18 states have internal predecessors, (1567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:30,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 211.0) internal successors, (4009), 19 states have internal predecessors, (4009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:30,539 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 211.0) internal successors, (4009), 19 states have internal predecessors, (4009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:30,539 INFO L175 Difference]: Start difference. First operand has 172 places, 328 transitions, 5122 flow. Second operand 18 states and 1567 transitions. [2023-08-25 06:51:30,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 421 transitions, 7216 flow [2023-08-25 06:51:30,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 421 transitions, 7105 flow, removed 25 selfloop flow, removed 8 redundant places. [2023-08-25 06:51:30,661 INFO L231 Difference]: Finished difference. Result has 186 places, 357 transitions, 6217 flow [2023-08-25 06:51:30,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=5027, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6217, PETRI_PLACES=186, PETRI_TRANSITIONS=357} [2023-08-25 06:51:30,662 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 150 predicate places. [2023-08-25 06:51:30,662 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 357 transitions, 6217 flow [2023-08-25 06:51:30,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 84.4375) internal successors, (1351), 16 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:30,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:51:30,662 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 06:51:30,669 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 06:51:30,867 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,SelfDestructingSolverStorable12 [2023-08-25 06:51:30,867 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 06:51:30,868 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:51:30,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1502529052, now seen corresponding path program 9 times [2023-08-25 06:51:30,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:51:30,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353701270] [2023-08-25 06:51:30,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:51:30,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:51:30,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:51:30,939 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 06:51:30,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:51:30,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353701270] [2023-08-25 06:51:30,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353701270] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:51:30,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804674283] [2023-08-25 06:51:30,940 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 06:51:30,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:51:30,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:51:30,945 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 06:51:30,964 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 06:51:31,039 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-25 06:51:31,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:51:31,040 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-25 06:51:31,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:51:31,103 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 06:51:31,103 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:51:31,178 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 06:51:31,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804674283] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:51:31,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:51:31,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-25 06:51:31,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753561146] [2023-08-25 06:51:31,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:51:31,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-25 06:51:31,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:51:31,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-25 06:51:31,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2023-08-25 06:51:31,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 211 [2023-08-25 06:51:31,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 357 transitions, 6217 flow. Second operand has 16 states, 16 states have (on average 84.4375) internal successors, (1351), 16 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:31,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:51:31,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 211 [2023-08-25 06:51:31,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:51:31,898 INFO L124 PetriNetUnfolderBase]: 1012/2132 cut-off events. [2023-08-25 06:51:31,898 INFO L125 PetriNetUnfolderBase]: For 35645/35735 co-relation queries the response was YES. [2023-08-25 06:51:31,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13847 conditions, 2132 events. 1012/2132 cut-off events. For 35645/35735 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 14239 event pairs, 35 based on Foata normal form. 108/2240 useless extension candidates. Maximal degree in co-relation 13793. Up to 354 conditions per place. [2023-08-25 06:51:31,915 INFO L140 encePairwiseOnDemand]: 203/211 looper letters, 138 selfloop transitions, 302 changer transitions 4/447 dead transitions. [2023-08-25 06:51:31,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 447 transitions, 7955 flow [2023-08-25 06:51:31,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-25 06:51:31,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-25 06:51:31,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2343 transitions. [2023-08-25 06:51:31,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4112690889942075 [2023-08-25 06:51:31,917 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2343 transitions. [2023-08-25 06:51:31,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2343 transitions. [2023-08-25 06:51:31,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:51:31,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2343 transitions. [2023-08-25 06:51:31,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 86.77777777777777) internal successors, (2343), 27 states have internal predecessors, (2343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:31,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 211.0) internal successors, (5908), 28 states have internal predecessors, (5908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:31,925 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 211.0) internal successors, (5908), 28 states have internal predecessors, (5908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:31,925 INFO L175 Difference]: Start difference. First operand has 186 places, 357 transitions, 6217 flow. Second operand 27 states and 2343 transitions. [2023-08-25 06:51:31,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 447 transitions, 7955 flow [2023-08-25 06:51:32,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 447 transitions, 7824 flow, removed 44 selfloop flow, removed 8 redundant places. [2023-08-25 06:51:32,058 INFO L231 Difference]: Finished difference. Result has 206 places, 370 transitions, 7167 flow [2023-08-25 06:51:32,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=5944, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=281, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=7167, PETRI_PLACES=206, PETRI_TRANSITIONS=370} [2023-08-25 06:51:32,058 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 170 predicate places. [2023-08-25 06:51:32,058 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 370 transitions, 7167 flow [2023-08-25 06:51:32,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 84.4375) internal successors, (1351), 16 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:32,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:51:32,059 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 06:51:32,063 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 06:51:32,263 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,SelfDestructingSolverStorable13 [2023-08-25 06:51:32,264 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 06:51:32,264 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:51:32,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1486100340, now seen corresponding path program 10 times [2023-08-25 06:51:32,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:51:32,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327738406] [2023-08-25 06:51:32,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:51:32,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:51:32,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:51:32,334 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 06:51:32,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:51:32,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327738406] [2023-08-25 06:51:32,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327738406] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:51:32,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613157871] [2023-08-25 06:51:32,334 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 06:51:32,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:51:32,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:51:32,335 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 06:51:32,337 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 06:51:32,391 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 06:51:32,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:51:32,392 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 06:51:32,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:51:32,458 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 06:51:32,458 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:51:32,498 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 06:51:32,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613157871] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:51:32,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:51:32,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 14 [2023-08-25 06:51:32,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442602983] [2023-08-25 06:51:32,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:51:32,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-25 06:51:32,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:51:32,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-25 06:51:32,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-08-25 06:51:32,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 211 [2023-08-25 06:51:32,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 370 transitions, 7167 flow. Second operand has 14 states, 14 states have (on average 84.35714285714286) internal successors, (1181), 14 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:32,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:51:32,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 211 [2023-08-25 06:51:32,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:51:32,893 INFO L124 PetriNetUnfolderBase]: 1009/2113 cut-off events. [2023-08-25 06:51:32,893 INFO L125 PetriNetUnfolderBase]: For 37405/37477 co-relation queries the response was YES. [2023-08-25 06:51:32,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14812 conditions, 2113 events. 1009/2113 cut-off events. For 37405/37477 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 13997 event pairs, 85 based on Foata normal form. 60/2171 useless extension candidates. Maximal degree in co-relation 14755. Up to 1286 conditions per place. [2023-08-25 06:51:32,909 INFO L140 encePairwiseOnDemand]: 204/211 looper letters, 316 selfloop transitions, 81 changer transitions 2/402 dead transitions. [2023-08-25 06:51:32,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 402 transitions, 8234 flow [2023-08-25 06:51:32,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-25 06:51:32,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-25 06:51:32,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1135 transitions. [2023-08-25 06:51:32,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41378053226394457 [2023-08-25 06:51:32,910 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1135 transitions. [2023-08-25 06:51:32,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1135 transitions. [2023-08-25 06:51:32,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:51:32,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1135 transitions. [2023-08-25 06:51:32,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 87.3076923076923) internal successors, (1135), 13 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:32,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 211.0) internal successors, (2954), 14 states have internal predecessors, (2954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:32,914 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 211.0) internal successors, (2954), 14 states have internal predecessors, (2954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:32,914 INFO L175 Difference]: Start difference. First operand has 206 places, 370 transitions, 7167 flow. Second operand 13 states and 1135 transitions. [2023-08-25 06:51:32,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 402 transitions, 8234 flow [2023-08-25 06:51:33,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 402 transitions, 7805 flow, removed 25 selfloop flow, removed 22 redundant places. [2023-08-25 06:51:33,105 INFO L231 Difference]: Finished difference. Result has 196 places, 370 transitions, 6899 flow [2023-08-25 06:51:33,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=6658, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6899, PETRI_PLACES=196, PETRI_TRANSITIONS=370} [2023-08-25 06:51:33,106 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 160 predicate places. [2023-08-25 06:51:33,106 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 370 transitions, 6899 flow [2023-08-25 06:51:33,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 84.35714285714286) internal successors, (1181), 14 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:33,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:51:33,107 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 06:51:33,113 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 06:51:33,311 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,SelfDestructingSolverStorable14 [2023-08-25 06:51:33,311 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 06:51:33,311 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:51:33,311 INFO L85 PathProgramCache]: Analyzing trace with hash 464642341, now seen corresponding path program 11 times [2023-08-25 06:51:33,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:51:33,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794205371] [2023-08-25 06:51:33,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:51:33,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:51:33,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:51:33,396 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:51:33,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:51:33,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794205371] [2023-08-25 06:51:33,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794205371] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:51:33,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833658055] [2023-08-25 06:51:33,397 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 06:51:33,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:51:33,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:51:33,398 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 06:51:33,399 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 06:51:33,465 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-25 06:51:33,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:51:33,466 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-25 06:51:33,467 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:51:33,515 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:51:33,515 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:51:33,694 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:51:33,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833658055] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:51:33,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:51:33,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 5] total 7 [2023-08-25 06:51:33,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214205723] [2023-08-25 06:51:33,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:51:33,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-25 06:51:33,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:51:33,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-25 06:51:33,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-08-25 06:51:33,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 211 [2023-08-25 06:51:33,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 370 transitions, 6899 flow. Second operand has 9 states, 9 states have (on average 97.44444444444444) internal successors, (877), 9 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:33,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:51:33,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 211 [2023-08-25 06:51:33,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:51:34,157 INFO L124 PetriNetUnfolderBase]: 1454/3065 cut-off events. [2023-08-25 06:51:34,158 INFO L125 PetriNetUnfolderBase]: For 49627/49723 co-relation queries the response was YES. [2023-08-25 06:51:34,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21127 conditions, 3065 events. 1454/3065 cut-off events. For 49627/49723 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 22381 event pairs, 119 based on Foata normal form. 67/3115 useless extension candidates. Maximal degree in co-relation 21076. Up to 1360 conditions per place. [2023-08-25 06:51:34,179 INFO L140 encePairwiseOnDemand]: 207/211 looper letters, 379 selfloop transitions, 118 changer transitions 71/579 dead transitions. [2023-08-25 06:51:34,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 579 transitions, 11694 flow [2023-08-25 06:51:34,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 06:51:34,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 06:51:34,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 520 transitions. [2023-08-25 06:51:34,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4928909952606635 [2023-08-25 06:51:34,180 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 520 transitions. [2023-08-25 06:51:34,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 520 transitions. [2023-08-25 06:51:34,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:51:34,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 520 transitions. [2023-08-25 06:51:34,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:34,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:34,182 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:34,182 INFO L175 Difference]: Start difference. First operand has 196 places, 370 transitions, 6899 flow. Second operand 5 states and 520 transitions. [2023-08-25 06:51:34,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 579 transitions, 11694 flow [2023-08-25 06:51:34,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 579 transitions, 11540 flow, removed 1 selfloop flow, removed 7 redundant places. [2023-08-25 06:51:34,471 INFO L231 Difference]: Finished difference. Result has 195 places, 426 transitions, 8414 flow [2023-08-25 06:51:34,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=6793, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=8414, PETRI_PLACES=195, PETRI_TRANSITIONS=426} [2023-08-25 06:51:34,471 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 159 predicate places. [2023-08-25 06:51:34,471 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 426 transitions, 8414 flow [2023-08-25 06:51:34,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 97.44444444444444) internal successors, (877), 9 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:34,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:51:34,472 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 06:51:34,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-25 06:51:34,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-25 06:51:34,676 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 06:51:34,676 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:51:34,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1093566349, now seen corresponding path program 12 times [2023-08-25 06:51:34,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:51:34,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608860884] [2023-08-25 06:51:34,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:51:34,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:51:34,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:51:34,778 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:51:34,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:51:34,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608860884] [2023-08-25 06:51:34,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608860884] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:51:34,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218289457] [2023-08-25 06:51:34,779 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 06:51:34,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:51:34,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:51:34,780 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 06:51:34,782 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 06:51:34,861 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-08-25 06:51:34,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:51:34,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-25 06:51:34,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:51:34,909 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 06:51:34,910 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:51:34,994 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 06:51:34,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218289457] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:51:34,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:51:34,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 14 [2023-08-25 06:51:34,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155237070] [2023-08-25 06:51:34,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:51:34,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-25 06:51:34,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:51:34,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-25 06:51:34,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-08-25 06:51:34,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 211 [2023-08-25 06:51:34,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 426 transitions, 8414 flow. Second operand has 15 states, 15 states have (on average 84.73333333333333) internal successors, (1271), 15 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:34,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:51:34,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 211 [2023-08-25 06:51:34,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:51:35,726 INFO L124 PetriNetUnfolderBase]: 1458/3102 cut-off events. [2023-08-25 06:51:35,726 INFO L125 PetriNetUnfolderBase]: For 55390/55644 co-relation queries the response was YES. [2023-08-25 06:51:35,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22149 conditions, 3102 events. 1458/3102 cut-off events. For 55390/55644 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 22679 event pairs, 49 based on Foata normal form. 250/3347 useless extension candidates. Maximal degree in co-relation 22095. Up to 1042 conditions per place. [2023-08-25 06:51:35,748 INFO L140 encePairwiseOnDemand]: 203/211 looper letters, 279 selfloop transitions, 247 changer transitions 32/561 dead transitions. [2023-08-25 06:51:35,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 561 transitions, 11158 flow [2023-08-25 06:51:35,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-25 06:51:35,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-25 06:51:35,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1589 transitions. [2023-08-25 06:51:35,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41837809373354395 [2023-08-25 06:51:35,750 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1589 transitions. [2023-08-25 06:51:35,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1589 transitions. [2023-08-25 06:51:35,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:51:35,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1589 transitions. [2023-08-25 06:51:35,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 88.27777777777777) internal successors, (1589), 18 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:35,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 211.0) internal successors, (4009), 19 states have internal predecessors, (4009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:35,755 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 211.0) internal successors, (4009), 19 states have internal predecessors, (4009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:35,756 INFO L175 Difference]: Start difference. First operand has 195 places, 426 transitions, 8414 flow. Second operand 18 states and 1589 transitions. [2023-08-25 06:51:35,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 561 transitions, 11158 flow [2023-08-25 06:51:36,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 561 transitions, 11020 flow, removed 37 selfloop flow, removed 2 redundant places. [2023-08-25 06:51:36,083 INFO L231 Difference]: Finished difference. Result has 218 places, 452 transitions, 9781 flow [2023-08-25 06:51:36,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=8326, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=222, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=9781, PETRI_PLACES=218, PETRI_TRANSITIONS=452} [2023-08-25 06:51:36,084 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 182 predicate places. [2023-08-25 06:51:36,084 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 452 transitions, 9781 flow [2023-08-25 06:51:36,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 84.73333333333333) internal successors, (1271), 15 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:36,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:51:36,084 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 06:51:36,089 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 06:51:36,289 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,SelfDestructingSolverStorable16 [2023-08-25 06:51:36,289 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 06:51:36,289 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:51:36,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1283545045, now seen corresponding path program 13 times [2023-08-25 06:51:36,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:51:36,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181515028] [2023-08-25 06:51:36,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:51:36,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:51:36,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:51:36,404 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 06:51:36,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:51:36,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181515028] [2023-08-25 06:51:36,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181515028] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:51:36,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134044628] [2023-08-25 06:51:36,405 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 06:51:36,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:51:36,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:51:36,406 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 06:51:36,408 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 06:51:36,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:51:36,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-25 06:51:36,475 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:51:36,609 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 06:51:36,610 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:51:36,770 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 06:51:36,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134044628] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:51:36,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:51:36,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-08-25 06:51:36,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731665788] [2023-08-25 06:51:36,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:51:36,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-25 06:51:36,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:51:36,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-25 06:51:36,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2023-08-25 06:51:36,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 211 [2023-08-25 06:51:36,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 452 transitions, 9781 flow. Second operand has 24 states, 24 states have (on average 84.125) internal successors, (2019), 24 states have internal predecessors, (2019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:36,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:51:36,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 211 [2023-08-25 06:51:36,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:51:38,308 INFO L124 PetriNetUnfolderBase]: 1972/4265 cut-off events. [2023-08-25 06:51:38,308 INFO L125 PetriNetUnfolderBase]: For 107653/107985 co-relation queries the response was YES. [2023-08-25 06:51:38,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32606 conditions, 4265 events. 1972/4265 cut-off events. For 107653/107985 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 33075 event pairs, 49 based on Foata normal form. 368/4633 useless extension candidates. Maximal degree in co-relation 32546. Up to 702 conditions per place. [2023-08-25 06:51:38,336 INFO L140 encePairwiseOnDemand]: 203/211 looper letters, 286 selfloop transitions, 508 changer transitions 9/806 dead transitions. [2023-08-25 06:51:38,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 806 transitions, 17510 flow [2023-08-25 06:51:38,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-08-25 06:51:38,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-08-25 06:51:38,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 3842 transitions. [2023-08-25 06:51:38,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4138302455838001 [2023-08-25 06:51:38,340 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 3842 transitions. [2023-08-25 06:51:38,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 3842 transitions. [2023-08-25 06:51:38,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:51:38,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 3842 transitions. [2023-08-25 06:51:38,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 87.31818181818181) internal successors, (3842), 44 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:38,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 211.0) internal successors, (9495), 45 states have internal predecessors, (9495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:38,351 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 211.0) internal successors, (9495), 45 states have internal predecessors, (9495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:38,351 INFO L175 Difference]: Start difference. First operand has 218 places, 452 transitions, 9781 flow. Second operand 44 states and 3842 transitions. [2023-08-25 06:51:38,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 806 transitions, 17510 flow [2023-08-25 06:51:38,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 806 transitions, 17302 flow, removed 16 selfloop flow, removed 9 redundant places. [2023-08-25 06:51:38,865 INFO L231 Difference]: Finished difference. Result has 270 places, 628 transitions, 15366 flow [2023-08-25 06:51:38,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=9575, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=337, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=15366, PETRI_PLACES=270, PETRI_TRANSITIONS=628} [2023-08-25 06:51:38,866 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 234 predicate places. [2023-08-25 06:51:38,866 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 628 transitions, 15366 flow [2023-08-25 06:51:38,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 84.125) internal successors, (2019), 24 states have internal predecessors, (2019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:38,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:51:38,866 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 06:51:38,872 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 06:51:39,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:51:39,071 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 06:51:39,071 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:51:39,071 INFO L85 PathProgramCache]: Analyzing trace with hash -859536019, now seen corresponding path program 14 times [2023-08-25 06:51:39,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:51:39,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180991959] [2023-08-25 06:51:39,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:51:39,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:51:39,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:51:39,186 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 06:51:39,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:51:39,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180991959] [2023-08-25 06:51:39,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180991959] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:51:39,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690510165] [2023-08-25 06:51:39,187 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 06:51:39,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:51:39,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:51:39,188 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 06:51:39,189 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 06:51:39,267 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 06:51:39,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:51:39,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-25 06:51:39,269 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:51:39,377 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 06:51:39,377 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:51:39,520 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 06:51:39,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690510165] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:51:39,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:51:39,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 22 [2023-08-25 06:51:39,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269124035] [2023-08-25 06:51:39,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:51:39,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-25 06:51:39,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:51:39,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-25 06:51:39,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=337, Unknown=0, NotChecked=0, Total=462 [2023-08-25 06:51:39,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 211 [2023-08-25 06:51:39,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 628 transitions, 15366 flow. Second operand has 22 states, 22 states have (on average 84.18181818181819) internal successors, (1852), 22 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:39,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:51:39,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 211 [2023-08-25 06:51:39,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:51:40,829 INFO L124 PetriNetUnfolderBase]: 2269/4798 cut-off events. [2023-08-25 06:51:40,829 INFO L125 PetriNetUnfolderBase]: For 168305/168741 co-relation queries the response was YES. [2023-08-25 06:51:40,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41809 conditions, 4798 events. 2269/4798 cut-off events. For 168305/168741 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 37054 event pairs, 130 based on Foata normal form. 318/5116 useless extension candidates. Maximal degree in co-relation 41731. Up to 1903 conditions per place. [2023-08-25 06:51:40,870 INFO L140 encePairwiseOnDemand]: 204/211 looper letters, 389 selfloop transitions, 420 changer transitions 1/813 dead transitions. [2023-08-25 06:51:40,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 813 transitions, 20968 flow [2023-08-25 06:51:40,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-25 06:51:40,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-25 06:51:40,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2348 transitions. [2023-08-25 06:51:40,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41214674390029843 [2023-08-25 06:51:40,873 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2348 transitions. [2023-08-25 06:51:40,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2348 transitions. [2023-08-25 06:51:40,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:51:40,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2348 transitions. [2023-08-25 06:51:40,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 86.96296296296296) internal successors, (2348), 27 states have internal predecessors, (2348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:40,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 211.0) internal successors, (5908), 28 states have internal predecessors, (5908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:40,879 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 211.0) internal successors, (5908), 28 states have internal predecessors, (5908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:40,879 INFO L175 Difference]: Start difference. First operand has 270 places, 628 transitions, 15366 flow. Second operand 27 states and 2348 transitions. [2023-08-25 06:51:40,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 813 transitions, 20968 flow [2023-08-25 06:51:42,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 813 transitions, 20507 flow, removed 200 selfloop flow, removed 12 redundant places. [2023-08-25 06:51:42,261 INFO L231 Difference]: Finished difference. Result has 292 places, 727 transitions, 19035 flow [2023-08-25 06:51:42,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=14925, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=320, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=19035, PETRI_PLACES=292, PETRI_TRANSITIONS=727} [2023-08-25 06:51:42,261 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 256 predicate places. [2023-08-25 06:51:42,261 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 727 transitions, 19035 flow [2023-08-25 06:51:42,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 84.18181818181819) internal successors, (1852), 22 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:42,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:51:42,262 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 06:51:42,272 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 06:51:42,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:51:42,466 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 06:51:42,467 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:51:42,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1641179553, now seen corresponding path program 15 times [2023-08-25 06:51:42,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:51:42,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379097178] [2023-08-25 06:51:42,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:51:42,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:51:42,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:51:42,597 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 06:51:42,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:51:42,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379097178] [2023-08-25 06:51:42,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379097178] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:51:42,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540515425] [2023-08-25 06:51:42,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 06:51:42,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:51:42,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:51:42,599 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 06:51:42,600 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 06:51:42,691 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-25 06:51:42,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:51:42,692 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-25 06:51:42,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:51:42,866 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 06:51:42,866 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:51:43,026 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 06:51:43,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540515425] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:51:43,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:51:43,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 22 [2023-08-25 06:51:43,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505296894] [2023-08-25 06:51:43,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:51:43,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-25 06:51:43,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:51:43,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-25 06:51:43,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2023-08-25 06:51:43,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 211 [2023-08-25 06:51:43,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 727 transitions, 19035 flow. Second operand has 22 states, 22 states have (on average 84.18181818181819) internal successors, (1852), 22 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:43,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:51:43,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 211 [2023-08-25 06:51:43,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:51:44,920 INFO L124 PetriNetUnfolderBase]: 2569/5464 cut-off events. [2023-08-25 06:51:44,920 INFO L125 PetriNetUnfolderBase]: For 207415/207903 co-relation queries the response was YES. [2023-08-25 06:51:44,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49042 conditions, 5464 events. 2569/5464 cut-off events. For 207415/207903 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 43145 event pairs, 25 based on Foata normal form. 448/5912 useless extension candidates. Maximal degree in co-relation 48956. Up to 929 conditions per place. [2023-08-25 06:51:44,967 INFO L140 encePairwiseOnDemand]: 203/211 looper letters, 362 selfloop transitions, 622 changer transitions 17/1004 dead transitions. [2023-08-25 06:51:44,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 1004 transitions, 26145 flow [2023-08-25 06:51:44,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-08-25 06:51:44,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2023-08-25 06:51:44,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 3568 transitions. [2023-08-25 06:51:44,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4124378684545139 [2023-08-25 06:51:44,970 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 3568 transitions. [2023-08-25 06:51:44,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 3568 transitions. [2023-08-25 06:51:44,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:51:44,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 3568 transitions. [2023-08-25 06:51:44,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 87.02439024390245) internal successors, (3568), 41 states have internal predecessors, (3568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:44,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 211.0) internal successors, (8862), 42 states have internal predecessors, (8862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:44,978 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 211.0) internal successors, (8862), 42 states have internal predecessors, (8862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:44,979 INFO L175 Difference]: Start difference. First operand has 292 places, 727 transitions, 19035 flow. Second operand 41 states and 3568 transitions. [2023-08-25 06:51:44,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 1004 transitions, 26145 flow [2023-08-25 06:51:46,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 1004 transitions, 25390 flow, removed 275 selfloop flow, removed 14 redundant places. [2023-08-25 06:51:46,799 INFO L231 Difference]: Finished difference. Result has 326 places, 828 transitions, 23033 flow [2023-08-25 06:51:46,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=18279, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=725, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=515, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=23033, PETRI_PLACES=326, PETRI_TRANSITIONS=828} [2023-08-25 06:51:46,800 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 290 predicate places. [2023-08-25 06:51:46,800 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 828 transitions, 23033 flow [2023-08-25 06:51:46,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 84.18181818181819) internal successors, (1852), 22 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:46,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:51:46,800 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 06:51:46,808 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 06:51:47,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:51:47,001 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 06:51:47,001 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:51:47,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1098141099, now seen corresponding path program 16 times [2023-08-25 06:51:47,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:51:47,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099117356] [2023-08-25 06:51:47,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:51:47,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:51:47,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:51:47,136 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 06:51:47,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:51:47,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099117356] [2023-08-25 06:51:47,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099117356] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:51:47,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181802606] [2023-08-25 06:51:47,136 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 06:51:47,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:51:47,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:51:47,137 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 06:51:47,139 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 06:51:47,208 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 06:51:47,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:51:47,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-25 06:51:47,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:51:47,343 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 06:51:47,343 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:51:47,463 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 06:51:47,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181802606] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:51:47,463 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:51:47,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-08-25 06:51:47,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458278680] [2023-08-25 06:51:47,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:51:47,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-25 06:51:47,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:51:47,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-25 06:51:47,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2023-08-25 06:51:47,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 211 [2023-08-25 06:51:47,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 828 transitions, 23033 flow. Second operand has 20 states, 20 states have (on average 84.2) internal successors, (1684), 20 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:47,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:51:47,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 211 [2023-08-25 06:51:47,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:51:49,649 INFO L124 PetriNetUnfolderBase]: 2989/6352 cut-off events. [2023-08-25 06:51:49,649 INFO L125 PetriNetUnfolderBase]: For 214128/214654 co-relation queries the response was YES. [2023-08-25 06:51:49,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59763 conditions, 6352 events. 2989/6352 cut-off events. For 214128/214654 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 51715 event pairs, 89 based on Foata normal form. 508/6860 useless extension candidates. Maximal degree in co-relation 59671. Up to 1116 conditions per place. [2023-08-25 06:51:49,708 INFO L140 encePairwiseOnDemand]: 203/211 looper letters, 308 selfloop transitions, 793 changer transitions 0/1104 dead transitions. [2023-08-25 06:51:49,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 1104 transitions, 31329 flow [2023-08-25 06:51:49,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-08-25 06:51:49,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-08-25 06:51:49,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 3391 transitions. [2023-08-25 06:51:49,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41207923198444524 [2023-08-25 06:51:49,711 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 3391 transitions. [2023-08-25 06:51:49,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 3391 transitions. [2023-08-25 06:51:49,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:51:49,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 3391 transitions. [2023-08-25 06:51:49,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 86.94871794871794) internal successors, (3391), 39 states have internal predecessors, (3391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:49,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 211.0) internal successors, (8440), 40 states have internal predecessors, (8440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:49,718 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 211.0) internal successors, (8440), 40 states have internal predecessors, (8440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:49,718 INFO L175 Difference]: Start difference. First operand has 326 places, 828 transitions, 23033 flow. Second operand 39 states and 3391 transitions. [2023-08-25 06:51:49,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 1104 transitions, 31329 flow [2023-08-25 06:51:51,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 1104 transitions, 30760 flow, removed 157 selfloop flow, removed 13 redundant places. [2023-08-25 06:51:51,913 INFO L231 Difference]: Finished difference. Result has 360 places, 976 transitions, 29892 flow [2023-08-25 06:51:51,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=22597, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=828, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=655, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=29892, PETRI_PLACES=360, PETRI_TRANSITIONS=976} [2023-08-25 06:51:51,914 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 324 predicate places. [2023-08-25 06:51:51,914 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 976 transitions, 29892 flow [2023-08-25 06:51:51,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 84.2) internal successors, (1684), 20 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:51,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:51:51,914 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 06:51:51,921 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 06:51:52,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:51:52,116 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 06:51:52,116 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:51:52,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1643925993, now seen corresponding path program 17 times [2023-08-25 06:51:52,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:51:52,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313103281] [2023-08-25 06:51:52,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:51:52,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:51:52,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:51:52,219 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 06:51:52,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:51:52,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313103281] [2023-08-25 06:51:52,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313103281] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:51:52,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648601265] [2023-08-25 06:51:52,220 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 06:51:52,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:51:52,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:51:52,221 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 06:51:52,223 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 06:51:52,294 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-08-25 06:51:52,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:51:52,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-25 06:51:52,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:51:52,388 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 06:51:52,389 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:51:52,533 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 06:51:52,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648601265] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:51:52,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:51:52,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2023-08-25 06:51:52,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829417550] [2023-08-25 06:51:52,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:51:52,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-25 06:51:52,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:51:52,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-25 06:51:52,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=337, Unknown=0, NotChecked=0, Total=462 [2023-08-25 06:51:52,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 211 [2023-08-25 06:51:52,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 976 transitions, 29892 flow. Second operand has 22 states, 22 states have (on average 84.18181818181819) internal successors, (1852), 22 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:52,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:51:52,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 211 [2023-08-25 06:51:52,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:51:54,915 INFO L124 PetriNetUnfolderBase]: 2961/6246 cut-off events. [2023-08-25 06:51:54,915 INFO L125 PetriNetUnfolderBase]: For 239109/239577 co-relation queries the response was YES. [2023-08-25 06:51:54,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62794 conditions, 6246 events. 2961/6246 cut-off events. For 239109/239577 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 50266 event pairs, 204 based on Foata normal form. 420/6666 useless extension candidates. Maximal degree in co-relation 62694. Up to 2702 conditions per place. [2023-08-25 06:51:54,980 INFO L140 encePairwiseOnDemand]: 204/211 looper letters, 390 selfloop transitions, 666 changer transitions 0/1059 dead transitions. [2023-08-25 06:51:54,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 1059 transitions, 33129 flow [2023-08-25 06:51:54,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-25 06:51:54,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-25 06:51:54,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2347 transitions. [2023-08-25 06:51:54,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41197121291908023 [2023-08-25 06:51:54,983 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2347 transitions. [2023-08-25 06:51:54,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2347 transitions. [2023-08-25 06:51:54,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:51:54,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2347 transitions. [2023-08-25 06:51:54,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 86.92592592592592) internal successors, (2347), 27 states have internal predecessors, (2347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:54,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 211.0) internal successors, (5908), 28 states have internal predecessors, (5908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:54,988 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 211.0) internal successors, (5908), 28 states have internal predecessors, (5908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:54,988 INFO L175 Difference]: Start difference. First operand has 360 places, 976 transitions, 29892 flow. Second operand 27 states and 2347 transitions. [2023-08-25 06:51:54,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 1059 transitions, 33129 flow [2023-08-25 06:51:58,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 1059 transitions, 32629 flow, removed 131 selfloop flow, removed 19 redundant places. [2023-08-25 06:51:58,076 INFO L231 Difference]: Finished difference. Result has 367 places, 971 transitions, 30638 flow [2023-08-25 06:51:58,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=29082, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=966, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=663, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=30638, PETRI_PLACES=367, PETRI_TRANSITIONS=971} [2023-08-25 06:51:58,077 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 331 predicate places. [2023-08-25 06:51:58,077 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 971 transitions, 30638 flow [2023-08-25 06:51:58,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 84.18181818181819) internal successors, (1852), 22 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:58,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:51:58,077 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 06:51:58,084 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-08-25 06:51:58,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:51:58,278 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 06:51:58,278 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:51:58,278 INFO L85 PathProgramCache]: Analyzing trace with hash 599365941, now seen corresponding path program 18 times [2023-08-25 06:51:58,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:51:58,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885524252] [2023-08-25 06:51:58,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:51:58,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:51:58,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:51:58,397 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 06:51:58,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:51:58,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885524252] [2023-08-25 06:51:58,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885524252] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:51:58,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331079987] [2023-08-25 06:51:58,398 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 06:51:58,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:51:58,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:51:58,399 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 06:51:58,401 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 06:51:58,506 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-25 06:51:58,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:51:58,507 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-25 06:51:58,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:51:58,660 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 06:51:58,660 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:51:58,794 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:51:58,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331079987] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:51:58,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:51:58,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 25 [2023-08-25 06:51:58,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309803943] [2023-08-25 06:51:58,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:51:58,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-25 06:51:58,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:51:58,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-25 06:51:58,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=473, Unknown=0, NotChecked=0, Total=600 [2023-08-25 06:51:58,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 211 [2023-08-25 06:51:58,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 971 transitions, 30638 flow. Second operand has 25 states, 25 states have (on average 84.08) internal successors, (2102), 25 states have internal predecessors, (2102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:58,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:51:58,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 211 [2023-08-25 06:51:58,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:52:01,729 INFO L124 PetriNetUnfolderBase]: 3537/7430 cut-off events. [2023-08-25 06:52:01,729 INFO L125 PetriNetUnfolderBase]: For 306561/307259 co-relation queries the response was YES. [2023-08-25 06:52:01,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77504 conditions, 7430 events. 3537/7430 cut-off events. For 306561/307259 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 61566 event pairs, 67 based on Foata normal form. 604/8034 useless extension candidates. Maximal degree in co-relation 77404. Up to 1378 conditions per place. [2023-08-25 06:52:01,807 INFO L140 encePairwiseOnDemand]: 203/211 looper letters, 297 selfloop transitions, 1011 changer transitions 5/1316 dead transitions. [2023-08-25 06:52:01,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 1316 transitions, 41786 flow [2023-08-25 06:52:01,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-08-25 06:52:01,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2023-08-25 06:52:01,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 3557 transitions. [2023-08-25 06:52:01,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41116633915154316 [2023-08-25 06:52:01,810 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 3557 transitions. [2023-08-25 06:52:01,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 3557 transitions. [2023-08-25 06:52:01,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:52:01,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 3557 transitions. [2023-08-25 06:52:01,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 86.7560975609756) internal successors, (3557), 41 states have internal predecessors, (3557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:52:01,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 211.0) internal successors, (8862), 42 states have internal predecessors, (8862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:52:01,818 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 211.0) internal successors, (8862), 42 states have internal predecessors, (8862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:52:01,819 INFO L175 Difference]: Start difference. First operand has 367 places, 971 transitions, 30638 flow. Second operand 41 states and 3557 transitions. [2023-08-25 06:52:01,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 1316 transitions, 41786 flow [2023-08-25 06:52:06,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 1316 transitions, 40688 flow, removed 155 selfloop flow, removed 19 redundant places. [2023-08-25 06:52:06,114 INFO L231 Difference]: Finished difference. Result has 396 places, 1167 transitions, 39011 flow [2023-08-25 06:52:06,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=29692, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=971, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=815, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=39011, PETRI_PLACES=396, PETRI_TRANSITIONS=1167} [2023-08-25 06:52:06,115 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 360 predicate places. [2023-08-25 06:52:06,115 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 1167 transitions, 39011 flow [2023-08-25 06:52:06,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 84.08) internal successors, (2102), 25 states have internal predecessors, (2102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:52:06,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:52:06,115 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 06:52:06,130 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 06:52:06,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:52:06,320 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 06:52:06,320 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:52:06,320 INFO L85 PathProgramCache]: Analyzing trace with hash 635152073, now seen corresponding path program 19 times [2023-08-25 06:52:06,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:52:06,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528934615] [2023-08-25 06:52:06,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:52:06,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:52:06,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:52:06,441 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 06:52:06,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:52:06,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528934615] [2023-08-25 06:52:06,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528934615] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:52:06,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305611558] [2023-08-25 06:52:06,441 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 06:52:06,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:52:06,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:52:06,442 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 06:52:06,444 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 06:52:06,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:52:06,527 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-25 06:52:06,527 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:52:06,616 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 06:52:06,616 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:52:06,793 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 06:52:06,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305611558] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:52:06,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:52:06,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2023-08-25 06:52:06,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009487269] [2023-08-25 06:52:06,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:52:06,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-25 06:52:06,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:52:06,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-25 06:52:06,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2023-08-25 06:52:06,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 211 [2023-08-25 06:52:06,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 1167 transitions, 39011 flow. Second operand has 21 states, 21 states have (on average 84.28571428571429) internal successors, (1770), 21 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:52:06,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:52:06,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 211 [2023-08-25 06:52:06,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:52:10,841 INFO L124 PetriNetUnfolderBase]: 4539/9466 cut-off events. [2023-08-25 06:52:10,841 INFO L125 PetriNetUnfolderBase]: For 397040/397628 co-relation queries the response was YES. [2023-08-25 06:52:10,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103575 conditions, 9466 events. 4539/9466 cut-off events. For 397040/397628 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 80668 event pairs, 60 based on Foata normal form. 518/9984 useless extension candidates. Maximal degree in co-relation 103472. Up to 1830 conditions per place. [2023-08-25 06:52:10,970 INFO L140 encePairwiseOnDemand]: 203/211 looper letters, 267 selfloop transitions, 1505 changer transitions 131/1906 dead transitions. [2023-08-25 06:52:10,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 1906 transitions, 64568 flow [2023-08-25 06:52:10,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-08-25 06:52:10,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2023-08-25 06:52:10,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 3567 transitions. [2023-08-25 06:52:10,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41232227488151657 [2023-08-25 06:52:10,974 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 3567 transitions. [2023-08-25 06:52:10,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 3567 transitions. [2023-08-25 06:52:10,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:52:10,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 3567 transitions. [2023-08-25 06:52:10,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 87.0) internal successors, (3567), 41 states have internal predecessors, (3567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:52:10,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 211.0) internal successors, (8862), 42 states have internal predecessors, (8862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:52:10,984 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 211.0) internal successors, (8862), 42 states have internal predecessors, (8862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:52:10,984 INFO L175 Difference]: Start difference. First operand has 396 places, 1167 transitions, 39011 flow. Second operand 41 states and 3567 transitions. [2023-08-25 06:52:10,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 1906 transitions, 64568 flow [2023-08-25 06:52:18,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 1906 transitions, 63971 flow, removed 197 selfloop flow, removed 18 redundant places. [2023-08-25 06:52:18,312 INFO L231 Difference]: Finished difference. Result has 432 places, 1634 transitions, 59451 flow [2023-08-25 06:52:18,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=38620, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1055, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=59451, PETRI_PLACES=432, PETRI_TRANSITIONS=1634} [2023-08-25 06:52:18,313 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 396 predicate places. [2023-08-25 06:52:18,313 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 1634 transitions, 59451 flow [2023-08-25 06:52:18,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 84.28571428571429) internal successors, (1770), 21 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:52:18,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:52:18,313 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 06:52:18,318 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 06:52:18,513 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,SelfDestructingSolverStorable23 [2023-08-25 06:52:18,514 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 06:52:18,514 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:52:18,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1081917195, now seen corresponding path program 20 times [2023-08-25 06:52:18,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:52:18,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410532809] [2023-08-25 06:52:18,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:52:18,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:52:18,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:52:18,631 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 06:52:18,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:52:18,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410532809] [2023-08-25 06:52:18,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410532809] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:52:18,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653894626] [2023-08-25 06:52:18,632 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 06:52:18,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:52:18,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:52:18,633 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 06:52:18,635 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 06:52:18,719 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 06:52:18,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:52:18,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-25 06:52:18,720 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:52:18,818 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 06:52:18,818 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:52:18,977 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 06:52:18,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653894626] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:52:18,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:52:18,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2023-08-25 06:52:18,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248751813] [2023-08-25 06:52:18,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:52:18,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-25 06:52:18,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:52:18,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-25 06:52:18,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462 [2023-08-25 06:52:18,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 211 [2023-08-25 06:52:18,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 1634 transitions, 59451 flow. Second operand has 22 states, 22 states have (on average 84.27272727272727) internal successors, (1854), 22 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:52:18,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:52:18,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 211 [2023-08-25 06:52:18,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:52:23,792 INFO L124 PetriNetUnfolderBase]: 4841/10213 cut-off events. [2023-08-25 06:52:23,792 INFO L125 PetriNetUnfolderBase]: For 501532/502181 co-relation queries the response was YES. [2023-08-25 06:52:23,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118279 conditions, 10213 events. 4841/10213 cut-off events. For 501532/502181 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 89226 event pairs, 87 based on Foata normal form. 532/10744 useless extension candidates. Maximal degree in co-relation 118162. Up to 1960 conditions per place. [2023-08-25 06:52:23,936 INFO L140 encePairwiseOnDemand]: 203/211 looper letters, 318 selfloop transitions, 1641 changer transitions 4/1966 dead transitions. [2023-08-25 06:52:23,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 1966 transitions, 73033 flow [2023-08-25 06:52:23,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-08-25 06:52:23,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-08-25 06:52:23,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 2954 transitions. [2023-08-25 06:52:23,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4117647058823529 [2023-08-25 06:52:23,940 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 2954 transitions. [2023-08-25 06:52:23,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 2954 transitions. [2023-08-25 06:52:23,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:52:23,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 2954 transitions. [2023-08-25 06:52:23,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 86.88235294117646) internal successors, (2954), 34 states have internal predecessors, (2954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:52:23,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 211.0) internal successors, (7385), 35 states have internal predecessors, (7385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:52:23,947 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 211.0) internal successors, (7385), 35 states have internal predecessors, (7385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:52:23,947 INFO L175 Difference]: Start difference. First operand has 432 places, 1634 transitions, 59451 flow. Second operand 34 states and 2954 transitions. [2023-08-25 06:52:23,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 1966 transitions, 73033 flow [2023-08-25 06:52:32,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 1966 transitions, 72356 flow, removed 312 selfloop flow, removed 9 redundant places. [2023-08-25 06:52:32,577 INFO L231 Difference]: Finished difference. Result has 461 places, 1848 transitions, 72490 flow [2023-08-25 06:52:32,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=58791, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1425, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=72490, PETRI_PLACES=461, PETRI_TRANSITIONS=1848} [2023-08-25 06:52:32,578 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 425 predicate places. [2023-08-25 06:52:32,578 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 1848 transitions, 72490 flow [2023-08-25 06:52:32,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 84.27272727272727) internal successors, (1854), 22 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:52:32,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:52:32,579 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 06:52:32,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-08-25 06:52:32,783 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,SelfDestructingSolverStorable24 [2023-08-25 06:52:32,784 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 06:52:32,784 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:52:32,784 INFO L85 PathProgramCache]: Analyzing trace with hash 855879657, now seen corresponding path program 21 times [2023-08-25 06:52:32,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:52:32,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914895130] [2023-08-25 06:52:32,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:52:32,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:52:32,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:52:32,902 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 06:52:32,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:52:32,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914895130] [2023-08-25 06:52:32,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914895130] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:52:32,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099176178] [2023-08-25 06:52:32,903 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 06:52:32,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:52:32,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:52:32,904 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 06:52:32,940 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 06:52:33,014 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-25 06:52:33,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:52:33,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-25 06:52:33,016 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:52:33,173 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 06:52:33,174 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:52:33,350 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 06:52:33,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099176178] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:52:33,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:52:33,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 22 [2023-08-25 06:52:33,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302432810] [2023-08-25 06:52:33,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:52:33,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-25 06:52:33,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:52:33,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-25 06:52:33,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2023-08-25 06:52:33,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 211 [2023-08-25 06:52:33,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 1848 transitions, 72490 flow. Second operand has 22 states, 22 states have (on average 84.18181818181819) internal successors, (1852), 22 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:52:33,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:52:33,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 211 [2023-08-25 06:52:33,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:52:39,625 INFO L124 PetriNetUnfolderBase]: 5168/10885 cut-off events. [2023-08-25 06:52:39,625 INFO L125 PetriNetUnfolderBase]: For 618249/619003 co-relation queries the response was YES. [2023-08-25 06:52:39,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133966 conditions, 10885 events. 5168/10885 cut-off events. For 618249/619003 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 96295 event pairs, 93 based on Foata normal form. 600/11485 useless extension candidates. Maximal degree in co-relation 133843. Up to 2122 conditions per place. [2023-08-25 06:52:39,755 INFO L140 encePairwiseOnDemand]: 202/211 looper letters, 553 selfloop transitions, 1555 changer transitions 16/2127 dead transitions. [2023-08-25 06:52:39,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 2127 transitions, 83945 flow [2023-08-25 06:52:39,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-08-25 06:52:39,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2023-08-25 06:52:39,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 3985 transitions. [2023-08-25 06:52:39,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4105707809602308 [2023-08-25 06:52:39,758 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 3985 transitions. [2023-08-25 06:52:39,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 3985 transitions. [2023-08-25 06:52:39,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:52:39,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 3985 transitions. [2023-08-25 06:52:39,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 86.6304347826087) internal successors, (3985), 46 states have internal predecessors, (3985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:52:39,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 211.0) internal successors, (9917), 47 states have internal predecessors, (9917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:52:39,766 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 211.0) internal successors, (9917), 47 states have internal predecessors, (9917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:52:39,767 INFO L175 Difference]: Start difference. First operand has 461 places, 1848 transitions, 72490 flow. Second operand 46 states and 3985 transitions. [2023-08-25 06:52:39,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 2127 transitions, 83945 flow [2023-08-25 06:52:53,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 2127 transitions, 83644 flow, removed 6 selfloop flow, removed 14 redundant places. [2023-08-25 06:52:53,789 INFO L231 Difference]: Finished difference. Result has 500 places, 1965 transitions, 81569 flow [2023-08-25 06:52:53,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=72097, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1846, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1428, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=81569, PETRI_PLACES=500, PETRI_TRANSITIONS=1965} [2023-08-25 06:52:53,790 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 464 predicate places. [2023-08-25 06:52:53,790 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 1965 transitions, 81569 flow [2023-08-25 06:52:53,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 84.18181818181819) internal successors, (1852), 22 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:52:53,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:52:53,791 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 06:52:53,799 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 06:52:53,991 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,SelfDestructingSolverStorable25 [2023-08-25 06:52:53,991 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 06:52:53,991 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:52:53,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1676128609, now seen corresponding path program 22 times [2023-08-25 06:52:53,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:52:53,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162975068] [2023-08-25 06:52:53,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:52:53,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:52:54,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:52:54,087 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 06:52:54,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:52:54,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162975068] [2023-08-25 06:52:54,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162975068] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:52:54,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310042228] [2023-08-25 06:52:54,088 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 06:52:54,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:52:54,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:52:54,088 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 06:52:54,091 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 06:52:54,171 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 06:52:54,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:52:54,171 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-25 06:52:54,172 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:52:54,288 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 06:52:54,288 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:52:54,401 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 06:52:54,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310042228] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:52:54,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:52:54,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-08-25 06:52:54,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71113524] [2023-08-25 06:52:54,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:52:54,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-25 06:52:54,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:52:54,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-25 06:52:54,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2023-08-25 06:52:54,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 211 [2023-08-25 06:52:54,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 1965 transitions, 81569 flow. Second operand has 19 states, 19 states have (on average 84.26315789473684) internal successors, (1601), 19 states have internal predecessors, (1601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:52:54,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:52:54,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 211 [2023-08-25 06:52:54,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:53:00,853 INFO L124 PetriNetUnfolderBase]: 5539/11604 cut-off events. [2023-08-25 06:53:00,853 INFO L125 PetriNetUnfolderBase]: For 752354/753288 co-relation queries the response was YES. [2023-08-25 06:53:00,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150995 conditions, 11604 events. 5539/11604 cut-off events. For 752354/753288 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 103792 event pairs, 139 based on Foata normal form. 770/12374 useless extension candidates. Maximal degree in co-relation 150864. Up to 2282 conditions per place. [2023-08-25 06:53:01,041 INFO L140 encePairwiseOnDemand]: 203/211 looper letters, 568 selfloop transitions, 1716 changer transitions 9/2296 dead transitions. [2023-08-25 06:53:01,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 542 places, 2296 transitions, 96423 flow [2023-08-25 06:53:01,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-08-25 06:53:01,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2023-08-25 06:53:01,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 3729 transitions. [2023-08-25 06:53:01,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41099966934861676 [2023-08-25 06:53:01,044 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 3729 transitions. [2023-08-25 06:53:01,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 3729 transitions. [2023-08-25 06:53:01,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:53:01,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 3729 transitions. [2023-08-25 06:53:01,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 86.72093023255815) internal successors, (3729), 43 states have internal predecessors, (3729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:53:01,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 211.0) internal successors, (9284), 44 states have internal predecessors, (9284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:53:01,052 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 211.0) internal successors, (9284), 44 states have internal predecessors, (9284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:53:01,052 INFO L175 Difference]: Start difference. First operand has 500 places, 1965 transitions, 81569 flow. Second operand 43 states and 3729 transitions. [2023-08-25 06:53:01,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 542 places, 2296 transitions, 96423 flow [2023-08-25 06:53:18,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 2296 transitions, 95617 flow, removed 58 selfloop flow, removed 22 redundant places. [2023-08-25 06:53:18,636 INFO L231 Difference]: Finished difference. Result has 531 places, 2134 transitions, 94344 flow [2023-08-25 06:53:18,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=80797, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1965, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1547, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=94344, PETRI_PLACES=531, PETRI_TRANSITIONS=2134} [2023-08-25 06:53:18,637 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 495 predicate places. [2023-08-25 06:53:18,637 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 2134 transitions, 94344 flow [2023-08-25 06:53:18,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 84.26315789473684) internal successors, (1601), 19 states have internal predecessors, (1601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:53:18,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:53:18,638 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 06:53:18,642 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-08-25 06:53:18,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:53:18,842 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 06:53:18,842 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:53:18,843 INFO L85 PathProgramCache]: Analyzing trace with hash -163654795, now seen corresponding path program 23 times [2023-08-25 06:53:18,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:53:18,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052580618] [2023-08-25 06:53:18,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:53:18,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:53:18,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:53:18,946 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 06:53:18,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:53:18,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052580618] [2023-08-25 06:53:18,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052580618] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:53:18,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894598280] [2023-08-25 06:53:18,947 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 06:53:18,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:53:18,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:53:18,949 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 06:53:18,951 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 06:53:19,037 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-08-25 06:53:19,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:53:19,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-25 06:53:19,038 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:53:19,121 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 06:53:19,122 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:53:19,273 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 06:53:19,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894598280] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:53:19,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:53:19,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2023-08-25 06:53:19,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108224464] [2023-08-25 06:53:19,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:53:19,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-25 06:53:19,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:53:19,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-25 06:53:19,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2023-08-25 06:53:19,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 211 [2023-08-25 06:53:19,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 2134 transitions, 94344 flow. Second operand has 21 states, 21 states have (on average 84.23809523809524) internal successors, (1769), 21 states have internal predecessors, (1769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:53:19,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:53:19,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 211 [2023-08-25 06:53:19,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:53:26,528 INFO L124 PetriNetUnfolderBase]: 5666/11899 cut-off events. [2023-08-25 06:53:26,528 INFO L125 PetriNetUnfolderBase]: For 872761/873749 co-relation queries the response was YES. [2023-08-25 06:53:26,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161060 conditions, 11899 events. 5666/11899 cut-off events. For 872761/873749 co-relation queries the response was YES. Maximal size of possible extension queue 614. Compared 106681 event pairs, 360 based on Foata normal form. 812/12711 useless extension candidates. Maximal degree in co-relation 160922. Up to 5152 conditions per place. [2023-08-25 06:53:26,690 INFO L140 encePairwiseOnDemand]: 204/211 looper letters, 792 selfloop transitions, 1486 changer transitions 8/2289 dead transitions. [2023-08-25 06:53:26,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 2289 transitions, 103090 flow [2023-08-25 06:53:26,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-25 06:53:26,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-25 06:53:26,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2091 transitions. [2023-08-25 06:53:26,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41291469194312796 [2023-08-25 06:53:26,692 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2091 transitions. [2023-08-25 06:53:26,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2091 transitions. [2023-08-25 06:53:26,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:53:26,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2091 transitions. [2023-08-25 06:53:26,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 87.125) internal successors, (2091), 24 states have internal predecessors, (2091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:53:26,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 211.0) internal successors, (5275), 25 states have internal predecessors, (5275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:53:26,696 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 211.0) internal successors, (5275), 25 states have internal predecessors, (5275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:53:26,696 INFO L175 Difference]: Start difference. First operand has 531 places, 2134 transitions, 94344 flow. Second operand 24 states and 2091 transitions. [2023-08-25 06:53:26,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 554 places, 2289 transitions, 103090 flow [2023-08-25 06:53:46,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 531 places, 2289 transitions, 102018 flow, removed 83 selfloop flow, removed 23 redundant places. [2023-08-25 06:53:46,882 INFO L231 Difference]: Finished difference. Result has 536 places, 2185 transitions, 99689 flow [2023-08-25 06:53:46,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=92684, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1423, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=692, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=99689, PETRI_PLACES=536, PETRI_TRANSITIONS=2185} [2023-08-25 06:53:46,883 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 500 predicate places. [2023-08-25 06:53:46,883 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 2185 transitions, 99689 flow [2023-08-25 06:53:46,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 84.23809523809524) internal successors, (1769), 21 states have internal predecessors, (1769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:53:46,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:53:46,884 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 06:53:46,890 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 06:53:47,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-08-25 06:53:47,087 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 06:53:47,088 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:53:47,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1986045249, now seen corresponding path program 24 times [2023-08-25 06:53:47,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:53:47,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604474880] [2023-08-25 06:53:47,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:53:47,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:53:47,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:53:47,195 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 06:53:47,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:53:47,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604474880] [2023-08-25 06:53:47,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604474880] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:53:47,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541678225] [2023-08-25 06:53:47,196 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 06:53:47,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:53:47,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:53:47,197 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 06:53:47,199 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 06:53:47,289 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-08-25 06:53:47,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:53:47,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-25 06:53:47,291 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:53:47,421 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 06:53:47,421 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:53:47,548 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 06:53:47,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541678225] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:53:47,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:53:47,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-08-25 06:53:47,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641396203] [2023-08-25 06:53:47,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:53:47,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-25 06:53:47,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:53:47,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-25 06:53:47,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2023-08-25 06:53:47,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 211 [2023-08-25 06:53:47,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 2185 transitions, 99689 flow. Second operand has 24 states, 24 states have (on average 84.29166666666667) internal successors, (2023), 24 states have internal predecessors, (2023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:53:47,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:53:47,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 211 [2023-08-25 06:53:47,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:53:55,540 INFO L124 PetriNetUnfolderBase]: 5873/12236 cut-off events. [2023-08-25 06:53:55,540 INFO L125 PetriNetUnfolderBase]: For 871295/872285 co-relation queries the response was YES. [2023-08-25 06:53:55,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171947 conditions, 12236 events. 5873/12236 cut-off events. For 871295/872285 co-relation queries the response was YES. Maximal size of possible extension queue 664. Compared 109622 event pairs, 67 based on Foata normal form. 844/13078 useless extension candidates. Maximal degree in co-relation 171808. Up to 4293 conditions per place. [2023-08-25 06:53:55,724 INFO L140 encePairwiseOnDemand]: 203/211 looper letters, 1256 selfloop transitions, 1127 changer transitions 28/2414 dead transitions. [2023-08-25 06:53:55,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 567 places, 2414 transitions, 111299 flow [2023-08-25 06:53:55,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-08-25 06:53:55,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-08-25 06:53:55,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 2962 transitions. [2023-08-25 06:53:55,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4128798438806802 [2023-08-25 06:53:55,728 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 2962 transitions. [2023-08-25 06:53:55,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 2962 transitions. [2023-08-25 06:53:55,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:53:55,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 2962 transitions. [2023-08-25 06:53:55,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 87.11764705882354) internal successors, (2962), 34 states have internal predecessors, (2962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:53:55,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 211.0) internal successors, (7385), 35 states have internal predecessors, (7385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:53:55,736 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 211.0) internal successors, (7385), 35 states have internal predecessors, (7385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:53:55,737 INFO L175 Difference]: Start difference. First operand has 536 places, 2185 transitions, 99689 flow. Second operand 34 states and 2962 transitions. [2023-08-25 06:53:55,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 567 places, 2414 transitions, 111299 flow [2023-08-25 06:54:15,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 556 places, 2414 transitions, 110701 flow, removed 191 selfloop flow, removed 11 redundant places. [2023-08-25 06:54:15,696 INFO L231 Difference]: Finished difference. Result has 563 places, 2258 transitions, 105948 flow [2023-08-25 06:54:15,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=98938, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1050, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=105948, PETRI_PLACES=563, PETRI_TRANSITIONS=2258} [2023-08-25 06:54:15,698 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 527 predicate places. [2023-08-25 06:54:15,698 INFO L495 AbstractCegarLoop]: Abstraction has has 563 places, 2258 transitions, 105948 flow [2023-08-25 06:54:15,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 84.29166666666667) internal successors, (2023), 24 states have internal predecessors, (2023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:54:15,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:54:15,698 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 06:54:15,704 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 06:54:15,899 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,SelfDestructingSolverStorable28 [2023-08-25 06:54:15,900 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 06:54:15,900 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:54:15,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1934115117, now seen corresponding path program 25 times [2023-08-25 06:54:15,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:54:15,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485847575] [2023-08-25 06:54:15,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:54:15,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:54:15,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:54:15,991 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 06:54:15,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:54:15,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485847575] [2023-08-25 06:54:15,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485847575] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:54:15,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028544010] [2023-08-25 06:54:15,991 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 06:54:15,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:54:15,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:54:15,992 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 06:54:15,993 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 06:54:16,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:54:16,078 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-25 06:54:16,079 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:54:16,187 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 06:54:16,187 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:54:16,309 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 06:54:16,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028544010] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:54:16,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:54:16,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 22 [2023-08-25 06:54:16,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965603143] [2023-08-25 06:54:16,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:54:16,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-25 06:54:16,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:54:16,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-25 06:54:16,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2023-08-25 06:54:16,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 211 [2023-08-25 06:54:16,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 563 places, 2258 transitions, 105948 flow. Second operand has 22 states, 22 states have (on average 84.18181818181819) internal successors, (1852), 22 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:54:16,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:54:16,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 211 [2023-08-25 06:54:16,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:54:24,338 INFO L124 PetriNetUnfolderBase]: 5985/12546 cut-off events. [2023-08-25 06:54:24,338 INFO L125 PetriNetUnfolderBase]: For 1027705/1028835 co-relation queries the response was YES. [2023-08-25 06:54:24,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181207 conditions, 12546 events. 5985/12546 cut-off events. For 1027705/1028835 co-relation queries the response was YES. Maximal size of possible extension queue 688. Compared 113908 event pairs, 377 based on Foata normal form. 540/13084 useless extension candidates. Maximal degree in co-relation 181064. Up to 9139 conditions per place. [2023-08-25 06:54:24,525 INFO L140 encePairwiseOnDemand]: 204/211 looper letters, 2128 selfloop transitions, 261 changer transitions 7/2399 dead transitions. [2023-08-25 06:54:24,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 583 places, 2399 transitions, 115616 flow [2023-08-25 06:54:24,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-25 06:54:24,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-25 06:54:24,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2083 transitions. [2023-08-25 06:54:24,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4113349131121643 [2023-08-25 06:54:24,531 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2083 transitions. [2023-08-25 06:54:24,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2083 transitions. [2023-08-25 06:54:24,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:54:24,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2083 transitions. [2023-08-25 06:54:24,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 86.79166666666667) internal successors, (2083), 24 states have internal predecessors, (2083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:54:24,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 211.0) internal successors, (5275), 25 states have internal predecessors, (5275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:54:24,539 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 211.0) internal successors, (5275), 25 states have internal predecessors, (5275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:54:24,539 INFO L175 Difference]: Start difference. First operand has 563 places, 2258 transitions, 105948 flow. Second operand 24 states and 2083 transitions. [2023-08-25 06:54:24,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 583 places, 2399 transitions, 115616 flow [2023-08-25 06:54:44,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 566 places, 2399 transitions, 115225 flow, removed 105 selfloop flow, removed 17 redundant places. [2023-08-25 06:54:44,724 INFO L231 Difference]: Finished difference. Result has 574 places, 2317 transitions, 109143 flow [2023-08-25 06:54:44,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=105157, PETRI_DIFFERENCE_MINUEND_PLACES=543, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1997, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=109143, PETRI_PLACES=574, PETRI_TRANSITIONS=2317} [2023-08-25 06:54:44,726 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 538 predicate places. [2023-08-25 06:54:44,726 INFO L495 AbstractCegarLoop]: Abstraction has has 574 places, 2317 transitions, 109143 flow [2023-08-25 06:54:44,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 84.18181818181819) internal successors, (1852), 22 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:54:44,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:54:44,727 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 06:54:44,732 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 06:54:44,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:54:44,927 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 06:54:44,928 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:54:44,928 INFO L85 PathProgramCache]: Analyzing trace with hash 2037786430, now seen corresponding path program 26 times [2023-08-25 06:54:44,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:54:44,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264202375] [2023-08-25 06:54:44,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:54:44,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:54:44,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:54:45,053 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:54:45,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:54:45,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264202375] [2023-08-25 06:54:45,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264202375] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:54:45,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496661129] [2023-08-25 06:54:45,053 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 06:54:45,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:54:45,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:54:45,054 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 06:54:45,056 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 06:54:45,156 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 06:54:45,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:54:45,157 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-25 06:54:45,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:54:45,312 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:54:45,313 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:54:45,558 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 19 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 06:54:45,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496661129] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:54:45,558 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:54:45,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 9] total 24 [2023-08-25 06:54:45,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145360710] [2023-08-25 06:54:45,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:54:45,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-25 06:54:45,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:54:45,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-25 06:54:45,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=454, Unknown=0, NotChecked=0, Total=600 [2023-08-25 06:54:45,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 211 [2023-08-25 06:54:45,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 2317 transitions, 109143 flow. Second operand has 25 states, 25 states have (on average 84.04) internal successors, (2101), 25 states have internal predecessors, (2101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:54:45,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:54:45,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 211 [2023-08-25 06:54:45,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:54:54,910 INFO L124 PetriNetUnfolderBase]: 6494/13610 cut-off events. [2023-08-25 06:54:54,911 INFO L125 PetriNetUnfolderBase]: For 1133302/1134670 co-relation queries the response was YES. [2023-08-25 06:54:55,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198903 conditions, 13610 events. 6494/13610 cut-off events. For 1133302/1134670 co-relation queries the response was YES. Maximal size of possible extension queue 745. Compared 125009 event pairs, 117 based on Foata normal form. 1164/14773 useless extension candidates. Maximal degree in co-relation 198755. Up to 3270 conditions per place. [2023-08-25 06:54:55,121 INFO L140 encePairwiseOnDemand]: 203/211 looper letters, 597 selfloop transitions, 2057 changer transitions 21/2678 dead transitions. [2023-08-25 06:54:55,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 602 places, 2678 transitions, 128417 flow [2023-08-25 06:54:55,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-25 06:54:55,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-25 06:54:55,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 2781 transitions. [2023-08-25 06:54:55,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4118779620853081 [2023-08-25 06:54:55,123 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 2781 transitions. [2023-08-25 06:54:55,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 2781 transitions. [2023-08-25 06:54:55,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:54:55,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 2781 transitions. [2023-08-25 06:54:55,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 86.90625) internal successors, (2781), 32 states have internal predecessors, (2781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:54:55,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 211.0) internal successors, (6963), 33 states have internal predecessors, (6963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:54:55,129 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 211.0) internal successors, (6963), 33 states have internal predecessors, (6963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:54:55,129 INFO L175 Difference]: Start difference. First operand has 574 places, 2317 transitions, 109143 flow. Second operand 32 states and 2781 transitions. [2023-08-25 06:54:55,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 602 places, 2678 transitions, 128417 flow [2023-08-25 06:55:18,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 587 places, 2678 transitions, 127107 flow, removed 144 selfloop flow, removed 15 redundant places. [2023-08-25 06:55:18,314 INFO L231 Difference]: Finished difference. Result has 602 places, 2539 transitions, 126850 flow [2023-08-25 06:55:18,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=107577, PETRI_DIFFERENCE_MINUEND_PLACES=556, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1838, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=126850, PETRI_PLACES=602, PETRI_TRANSITIONS=2539} [2023-08-25 06:55:18,316 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 566 predicate places. [2023-08-25 06:55:18,316 INFO L495 AbstractCegarLoop]: Abstraction has has 602 places, 2539 transitions, 126850 flow [2023-08-25 06:55:18,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 84.04) internal successors, (2101), 25 states have internal predecessors, (2101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:55:18,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:55:18,317 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 06:55:18,323 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 06:55:18,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:55:18,520 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 06:55:18,521 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:55:18,521 INFO L85 PathProgramCache]: Analyzing trace with hash 388951096, now seen corresponding path program 27 times [2023-08-25 06:55:18,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:55:18,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117312139] [2023-08-25 06:55:18,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:55:18,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:55:18,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:55:18,658 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:55:18,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:55:18,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117312139] [2023-08-25 06:55:18,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117312139] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:55:18,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632473753] [2023-08-25 06:55:18,659 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 06:55:18,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:55:18,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:55:18,660 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 06:55:18,662 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 06:55:18,769 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-08-25 06:55:18,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:55:18,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-25 06:55:18,771 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:55:18,910 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:55:18,911 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:55:19,130 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:55:19,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632473753] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:55:19,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:55:19,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2023-08-25 06:55:19,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453098401] [2023-08-25 06:55:19,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:55:19,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-25 06:55:19,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:55:19,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-25 06:55:19,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=550, Unknown=0, NotChecked=0, Total=702 [2023-08-25 06:55:19,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 211 [2023-08-25 06:55:19,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 602 places, 2539 transitions, 126850 flow. Second operand has 27 states, 27 states have (on average 83.81481481481481) internal successors, (2263), 27 states have internal predecessors, (2263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:55:19,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:55:19,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 211 [2023-08-25 06:55:19,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:55:29,774 INFO L124 PetriNetUnfolderBase]: 6751/14254 cut-off events. [2023-08-25 06:55:29,774 INFO L125 PetriNetUnfolderBase]: For 1367694/1369182 co-relation queries the response was YES. [2023-08-25 06:55:29,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217715 conditions, 14254 events. 6751/14254 cut-off events. For 1367694/1369182 co-relation queries the response was YES. Maximal size of possible extension queue 770. Compared 132420 event pairs, 93 based on Foata normal form. 1216/15470 useless extension candidates. Maximal degree in co-relation 217559. Up to 2768 conditions per place. [2023-08-25 06:55:30,088 INFO L140 encePairwiseOnDemand]: 203/211 looper letters, 636 selfloop transitions, 2164 changer transitions 29/2832 dead transitions. [2023-08-25 06:55:30,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 639 places, 2832 transitions, 142950 flow [2023-08-25 06:55:30,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-08-25 06:55:30,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-08-25 06:55:30,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 3296 transitions. [2023-08-25 06:55:30,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4110750810675979 [2023-08-25 06:55:30,091 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 3296 transitions. [2023-08-25 06:55:30,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 3296 transitions. [2023-08-25 06:55:30,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:55:30,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 3296 transitions. [2023-08-25 06:55:30,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 86.73684210526316) internal successors, (3296), 38 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:55:30,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 211.0) internal successors, (8229), 39 states have internal predecessors, (8229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:55:30,097 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 211.0) internal successors, (8229), 39 states have internal predecessors, (8229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:55:30,097 INFO L175 Difference]: Start difference. First operand has 602 places, 2539 transitions, 126850 flow. Second operand 38 states and 3296 transitions. [2023-08-25 06:55:30,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 639 places, 2832 transitions, 142950 flow [2023-08-25 06:56:01,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 624 places, 2832 transitions, 141658 flow, removed 353 selfloop flow, removed 15 redundant places. [2023-08-25 06:56:01,271 INFO L231 Difference]: Finished difference. Result has 632 places, 2648 transitions, 137711 flow [2023-08-25 06:56:01,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=125736, PETRI_DIFFERENCE_MINUEND_PLACES=587, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2051, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=137711, PETRI_PLACES=632, PETRI_TRANSITIONS=2648} [2023-08-25 06:56:01,274 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 596 predicate places. [2023-08-25 06:56:01,274 INFO L495 AbstractCegarLoop]: Abstraction has has 632 places, 2648 transitions, 137711 flow [2023-08-25 06:56:01,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 83.81481481481481) internal successors, (2263), 27 states have internal predecessors, (2263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:01,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:56:01,274 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 06:56:01,279 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 06:56:01,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:56:01,475 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 06:56:01,475 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:56:01,475 INFO L85 PathProgramCache]: Analyzing trace with hash 690195448, now seen corresponding path program 28 times [2023-08-25 06:56:01,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:56:01,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959904929] [2023-08-25 06:56:01,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:56:01,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:56:01,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:56:01,628 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 06:56:01,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:56:01,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959904929] [2023-08-25 06:56:01,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959904929] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:56:01,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400239519] [2023-08-25 06:56:01,628 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 06:56:01,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:56:01,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:56:01,629 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 06:56:01,631 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 06:56:01,725 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 06:56:01,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:56:01,727 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-25 06:56:01,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:56:01,809 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 06:56:01,809 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:56:01,975 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 06:56:01,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400239519] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:56:01,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:56:01,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 7] total 12 [2023-08-25 06:56:01,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878997100] [2023-08-25 06:56:01,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:56:01,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-25 06:56:01,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:56:01,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-25 06:56:01,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2023-08-25 06:56:01,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 211 [2023-08-25 06:56:01,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 632 places, 2648 transitions, 137711 flow. Second operand has 14 states, 14 states have (on average 88.85714285714286) internal successors, (1244), 14 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:01,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:56:01,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 211 [2023-08-25 06:56:01,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:56:19,542 INFO L124 PetriNetUnfolderBase]: 11297/23754 cut-off events. [2023-08-25 06:56:19,543 INFO L125 PetriNetUnfolderBase]: For 2618387/2620371 co-relation queries the response was YES. [2023-08-25 06:56:19,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 377873 conditions, 23754 events. 11297/23754 cut-off events. For 2618387/2620371 co-relation queries the response was YES. Maximal size of possible extension queue 1202. Compared 234736 event pairs, 146 based on Foata normal form. 1470/25202 useless extension candidates. Maximal degree in co-relation 377709. Up to 7340 conditions per place. [2023-08-25 06:56:20,082 INFO L140 encePairwiseOnDemand]: 206/211 looper letters, 2004 selfloop transitions, 2488 changer transitions 230/4728 dead transitions. [2023-08-25 06:56:20,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 642 places, 4728 transitions, 255773 flow [2023-08-25 06:56:20,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-25 06:56:20,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-25 06:56:20,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1046 transitions. [2023-08-25 06:56:20,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45066781559672553 [2023-08-25 06:56:20,084 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1046 transitions. [2023-08-25 06:56:20,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1046 transitions. [2023-08-25 06:56:20,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:56:20,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1046 transitions. [2023-08-25 06:56:20,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 95.0909090909091) internal successors, (1046), 11 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:20,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 211.0) internal successors, (2532), 12 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:20,086 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 211.0) internal successors, (2532), 12 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:20,086 INFO L175 Difference]: Start difference. First operand has 632 places, 2648 transitions, 137711 flow. Second operand 11 states and 1046 transitions. [2023-08-25 06:56:20,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 642 places, 4728 transitions, 255773 flow [2023-08-25 06:57:46,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 617 places, 4728 transitions, 253366 flow, removed 295 selfloop flow, removed 25 redundant places. [2023-08-25 06:57:46,846 INFO L231 Difference]: Finished difference. Result has 624 places, 3888 transitions, 209893 flow [2023-08-25 06:57:46,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=136285, PETRI_DIFFERENCE_MINUEND_PLACES=607, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2648, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1409, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=917, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=209893, PETRI_PLACES=624, PETRI_TRANSITIONS=3888} [2023-08-25 06:57:46,848 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 588 predicate places. [2023-08-25 06:57:46,848 INFO L495 AbstractCegarLoop]: Abstraction has has 624 places, 3888 transitions, 209893 flow [2023-08-25 06:57:46,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 88.85714285714286) internal successors, (1244), 14 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:57:46,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:57:46,849 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 06:57:46,855 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 06:57:47,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:57:47,054 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 06:57:47,054 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:57:47,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1920894094, now seen corresponding path program 29 times [2023-08-25 06:57:47,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:57:47,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308820511] [2023-08-25 06:57:47,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:57:47,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:57:47,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:57:47,183 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:57:47,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:57:47,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308820511] [2023-08-25 06:57:47,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308820511] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:57:47,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567858148] [2023-08-25 06:57:47,184 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 06:57:47,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:57:47,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:57:47,185 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 06:57:47,186 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 06:57:47,283 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-08-25 06:57:47,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:57:47,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-25 06:57:47,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:57:47,332 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 06:57:47,332 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:57:47,430 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 06:57:47,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567858148] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:57:47,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:57:47,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 6] total 17 [2023-08-25 06:57:47,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329808450] [2023-08-25 06:57:47,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:57:47,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-25 06:57:47,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:57:47,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-25 06:57:47,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2023-08-25 06:57:47,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 211 [2023-08-25 06:57:47,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 624 places, 3888 transitions, 209893 flow. Second operand has 18 states, 18 states have (on average 84.55555555555556) internal successors, (1522), 18 states have internal predecessors, (1522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:57:47,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:57:47,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 211 [2023-08-25 06:57:47,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:58:13,132 INFO L124 PetriNetUnfolderBase]: 11462/24436 cut-off events. [2023-08-25 06:58:13,133 INFO L125 PetriNetUnfolderBase]: For 2959624/2962641 co-relation queries the response was YES. [2023-08-25 06:58:13,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 399348 conditions, 24436 events. 11462/24436 cut-off events. For 2959624/2962641 co-relation queries the response was YES. Maximal size of possible extension queue 1241. Compared 245358 event pairs, 215 based on Foata normal form. 2368/26758 useless extension candidates. Maximal degree in co-relation 399180. Up to 8092 conditions per place. [2023-08-25 06:58:13,559 INFO L140 encePairwiseOnDemand]: 203/211 looper letters, 1728 selfloop transitions, 2506 changer transitions 60/4297 dead transitions. [2023-08-25 06:58:13,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 646 places, 4297 transitions, 235972 flow [2023-08-25 06:58:13,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-25 06:58:13,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-25 06:58:13,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2049 transitions. [2023-08-25 06:58:13,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222130640840717 [2023-08-25 06:58:13,561 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2049 transitions. [2023-08-25 06:58:13,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2049 transitions. [2023-08-25 06:58:13,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:58:13,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2049 transitions. [2023-08-25 06:58:13,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 89.08695652173913) internal successors, (2049), 23 states have internal predecessors, (2049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:58:13,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 211.0) internal successors, (5064), 24 states have internal predecessors, (5064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:58:13,564 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 211.0) internal successors, (5064), 24 states have internal predecessors, (5064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:58:13,564 INFO L175 Difference]: Start difference. First operand has 624 places, 3888 transitions, 209893 flow. Second operand 23 states and 2049 transitions. [2023-08-25 06:58:13,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 646 places, 4297 transitions, 235972 flow [2023-08-25 06:59:52,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 643 places, 4297 transitions, 234962 flow, removed 477 selfloop flow, removed 3 redundant places. [2023-08-25 06:59:52,703 INFO L231 Difference]: Finished difference. Result has 658 places, 4044 transitions, 227406 flow [2023-08-25 06:59:52,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=208960, PETRI_DIFFERENCE_MINUEND_PLACES=621, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3887, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2358, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=227406, PETRI_PLACES=658, PETRI_TRANSITIONS=4044} [2023-08-25 06:59:52,705 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 622 predicate places. [2023-08-25 06:59:52,705 INFO L495 AbstractCegarLoop]: Abstraction has has 658 places, 4044 transitions, 227406 flow [2023-08-25 06:59:52,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 84.55555555555556) internal successors, (1522), 18 states have internal predecessors, (1522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:59:52,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:59:52,706 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 06:59:52,714 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-08-25 06:59:52,910 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,SelfDestructingSolverStorable33 [2023-08-25 06:59:52,910 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 06:59:52,911 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:59:52,911 INFO L85 PathProgramCache]: Analyzing trace with hash -608298756, now seen corresponding path program 30 times [2023-08-25 06:59:52,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:59:52,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037979255] [2023-08-25 06:59:52,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:59:52,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:59:52,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:59:53,035 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:59:53,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:59:53,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037979255] [2023-08-25 06:59:53,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037979255] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:59:53,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69864432] [2023-08-25 06:59:53,035 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 06:59:53,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:59:53,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:59:53,036 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 06:59:53,038 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 06:59:53,152 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-08-25 06:59:53,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:59:53,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-25 06:59:53,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:59:53,331 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:59:53,331 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:59:53,598 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:59:53,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69864432] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:59:53,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:59:53,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 27 [2023-08-25 06:59:53,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022112925] [2023-08-25 06:59:53,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:59:53,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-25 06:59:53,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:59:53,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-25 06:59:53,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=600, Unknown=0, NotChecked=0, Total=756 [2023-08-25 06:59:53,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 211 [2023-08-25 06:59:53,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 658 places, 4044 transitions, 227406 flow. Second operand has 28 states, 28 states have (on average 83.85714285714286) internal successors, (2348), 28 states have internal predecessors, (2348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:59:53,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:59:53,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 211 [2023-08-25 06:59:53,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:00:30,906 INFO L124 PetriNetUnfolderBase]: 13641/29003 cut-off events. [2023-08-25 07:00:30,906 INFO L125 PetriNetUnfolderBase]: For 4132463/4136051 co-relation queries the response was YES. [2023-08-25 07:00:31,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 495972 conditions, 29003 events. 13641/29003 cut-off events. For 4132463/4136051 co-relation queries the response was YES. Maximal size of possible extension queue 1362. Compared 295293 event pairs, 183 based on Foata normal form. 3480/32482 useless extension candidates. Maximal degree in co-relation 495792. Up to 5353 conditions per place. [2023-08-25 07:00:31,541 INFO L140 encePairwiseOnDemand]: 203/211 looper letters, 1316 selfloop transitions, 3790 changer transitions 112/5221 dead transitions. [2023-08-25 07:00:31,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 708 places, 5221 transitions, 297663 flow [2023-08-25 07:00:31,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-08-25 07:00:31,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2023-08-25 07:00:31,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 4608 transitions. [2023-08-25 07:00:31,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4120540105517303 [2023-08-25 07:00:31,545 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 4608 transitions. [2023-08-25 07:00:31,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 4608 transitions. [2023-08-25 07:00:31,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:00:31,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 4608 transitions. [2023-08-25 07:00:31,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 86.94339622641509) internal successors, (4608), 53 states have internal predecessors, (4608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:00:31,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 211.0) internal successors, (11394), 54 states have internal predecessors, (11394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:00:31,554 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 211.0) internal successors, (11394), 54 states have internal predecessors, (11394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:00:31,554 INFO L175 Difference]: Start difference. First operand has 658 places, 4044 transitions, 227406 flow. Second operand 53 states and 4608 transitions. [2023-08-25 07:00:31,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 708 places, 5221 transitions, 297663 flow [2023-08-25 07:03:20,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 694 places, 5221 transitions, 294358 flow, removed 343 selfloop flow, removed 14 redundant places. [2023-08-25 07:03:21,134 INFO L231 Difference]: Finished difference. Result has 717 places, 4771 transitions, 281239 flow [2023-08-25 07:03:21,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=223863, PETRI_DIFFERENCE_MINUEND_PLACES=642, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4029, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3049, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=763, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=281239, PETRI_PLACES=717, PETRI_TRANSITIONS=4771} [2023-08-25 07:03:21,138 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 681 predicate places. [2023-08-25 07:03:21,138 INFO L495 AbstractCegarLoop]: Abstraction has has 717 places, 4771 transitions, 281239 flow [2023-08-25 07:03:21,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 83.85714285714286) internal successors, (2348), 28 states have internal predecessors, (2348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:03:21,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:03:21,138 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 07:03:21,143 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 07:03:21,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:03:21,339 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 07:03:21,339 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:03:21,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1122122770, now seen corresponding path program 31 times [2023-08-25 07:03:21,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:03:21,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251810634] [2023-08-25 07:03:21,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:03:21,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:03:21,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:03:21,466 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:03:21,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:03:21,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251810634] [2023-08-25 07:03:21,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251810634] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:03:21,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927181754] [2023-08-25 07:03:21,466 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 07:03:21,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:03:21,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:03:21,467 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 07:03:21,469 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 07:03:21,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:03:21,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-25 07:03:21,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:03:21,713 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:03:21,713 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:03:21,959 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:03:21,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927181754] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:03:21,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:03:21,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2023-08-25 07:03:21,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349981137] [2023-08-25 07:03:21,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:03:21,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-25 07:03:21,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:03:21,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-25 07:03:21,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=561, Unknown=0, NotChecked=0, Total=702 [2023-08-25 07:03:21,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 211 [2023-08-25 07:03:21,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 717 places, 4771 transitions, 281239 flow. Second operand has 27 states, 27 states have (on average 84.0) internal successors, (2268), 27 states have internal predecessors, (2268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:03:21,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:03:21,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 211 [2023-08-25 07:03:21,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:04:07,679 INFO L124 PetriNetUnfolderBase]: 14104/30019 cut-off events. [2023-08-25 07:04:07,679 INFO L125 PetriNetUnfolderBase]: For 4340323/4343856 co-relation queries the response was YES. [2023-08-25 07:04:08,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 531698 conditions, 30019 events. 14104/30019 cut-off events. For 4340323/4343856 co-relation queries the response was YES. Maximal size of possible extension queue 1443. Compared 307517 event pairs, 139 based on Foata normal form. 3408/33425 useless extension candidates. Maximal degree in co-relation 531499. Up to 10778 conditions per place. [2023-08-25 07:04:08,360 INFO L140 encePairwiseOnDemand]: 203/211 looper letters, 2287 selfloop transitions, 2847 changer transitions 41/5178 dead transitions. [2023-08-25 07:04:08,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 740 places, 5178 transitions, 311993 flow [2023-08-25 07:04:08,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-25 07:04:08,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-25 07:04:08,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2355 transitions. [2023-08-25 07:04:08,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4133754607688257 [2023-08-25 07:04:08,362 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2355 transitions. [2023-08-25 07:04:08,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2355 transitions. [2023-08-25 07:04:08,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:04:08,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2355 transitions. [2023-08-25 07:04:08,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 87.22222222222223) internal successors, (2355), 27 states have internal predecessors, (2355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:04:08,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 211.0) internal successors, (5908), 28 states have internal predecessors, (5908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:04:08,366 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 211.0) internal successors, (5908), 28 states have internal predecessors, (5908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:04:08,366 INFO L175 Difference]: Start difference. First operand has 717 places, 4771 transitions, 281239 flow. Second operand 27 states and 2355 transitions. [2023-08-25 07:04:08,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 740 places, 5178 transitions, 311993 flow Received shutdown request... [2023-08-25 07:05:26,221 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-25 07:05:26,221 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 07:05:26,717 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5ASSERT_VIOLATIONASSERT (21 of 22 remaining) [2023-08-25 07:05:26,721 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 07:05:26,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:05:26,918 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-08-25 07:05:26,919 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2023-08-25 07:05:26,919 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2023-08-25 07:05:26,919 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2023-08-25 07:05:26,919 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2023-08-25 07:05:26,919 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2023-08-25 07:05:26,919 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2023-08-25 07:05:26,920 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2023-08-25 07:05:26,920 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2023-08-25 07:05:26,920 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2023-08-25 07:05:26,920 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2023-08-25 07:05:26,920 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2023-08-25 07:05:26,920 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2023-08-25 07:05:26,920 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 22 remaining) [2023-08-25 07:05:26,920 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 22 remaining) [2023-08-25 07:05:26,920 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2023-08-25 07:05:26,920 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2023-08-25 07:05:26,920 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2023-08-25 07:05:26,920 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2023-08-25 07:05:26,920 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2023-08-25 07:05:26,920 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2023-08-25 07:05:26,920 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2023-08-25 07:05:26,921 INFO L445 BasicCegarLoop]: Path program histogram: [31, 2, 1, 1, 1] [2023-08-25 07:05:26,924 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-25 07:05:26,924 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-25 07:05:26,925 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 07:05:26 BasicIcfg [2023-08-25 07:05:26,925 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-25 07:05:26,926 INFO L158 Benchmark]: Toolchain (without parser) took 848598.03ms. Allocated memory was 442.5MB in the beginning and 7.5GB in the end (delta: 7.1GB). Free memory was 418.9MB in the beginning and 3.0GB in the end (delta: -2.6GB). Peak memory consumption was 6.1GB. Max. memory is 16.0GB. [2023-08-25 07:05:26,926 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 442.5MB. Free memory is still 420.0MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-25 07:05:26,926 INFO L158 Benchmark]: CACSL2BoogieTranslator took 229.87ms. Allocated memory is still 442.5MB. Free memory was 418.9MB in the beginning and 408.1MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-25 07:05:26,926 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.37ms. Allocated memory is still 442.5MB. Free memory was 408.1MB in the beginning and 406.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 07:05:26,927 INFO L158 Benchmark]: Boogie Preprocessor took 30.19ms. Allocated memory is still 442.5MB. Free memory was 406.0MB in the beginning and 404.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 07:05:26,927 INFO L158 Benchmark]: RCFGBuilder took 398.95ms. Allocated memory is still 442.5MB. Free memory was 404.4MB in the beginning and 385.0MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-25 07:05:26,929 INFO L158 Benchmark]: TraceAbstraction took 847897.12ms. Allocated memory was 442.5MB in the beginning and 7.5GB in the end (delta: 7.1GB). Free memory was 384.5MB in the beginning and 3.0GB in the end (delta: -2.6GB). Peak memory consumption was 6.1GB. Max. memory is 16.0GB. [2023-08-25 07:05:26,929 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 442.5MB. Free memory is still 420.0MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 229.87ms. Allocated memory is still 442.5MB. Free memory was 418.9MB in the beginning and 408.1MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 36.37ms. Allocated memory is still 442.5MB. Free memory was 408.1MB in the beginning and 406.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 30.19ms. Allocated memory is still 442.5MB. Free memory was 406.0MB in the beginning and 404.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 398.95ms. Allocated memory is still 442.5MB. Free memory was 404.4MB in the beginning and 385.0MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 847897.12ms. Allocated memory was 442.5MB in the beginning and 7.5GB in the end (delta: 7.1GB). Free memory was 384.5MB in the beginning and 3.0GB in the end (delta: -2.6GB). Peak memory consumption was 6.1GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.2s, 102 PlacesBefore, 36 PlacesAfterwards, 101 TransitionsBefore, 33 TransitionsAfterwards, 1364 CoEnabledTransitionPairs, 6 FixpointIterations, 47 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 99 TotalNumberOfCompositions, 3792 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2148, independent: 2003, independent conditional: 0, independent unconditional: 2003, dependent: 145, dependent conditional: 0, dependent unconditional: 145, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 840, independent: 821, independent conditional: 0, independent unconditional: 821, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2148, independent: 1182, independent conditional: 0, independent unconditional: 1182, dependent: 126, dependent conditional: 0, dependent unconditional: 126, unknown: 840, unknown conditional: 0, unknown unconditional: 840] , Statistics on independence cache: Total cache size (in pairs): 121, Positive cache size: 110, Positive conditional cache size: 0, Positive unconditional cache size: 110, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, 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 executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 41]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 43]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 43]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 52]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 54]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 55]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 55]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 67]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 68]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 76]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 136 locations, 22 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: 847.8s, OverallIterations: 36, TraceHistogramMax: 4, PathProgramHistogramMax: 31, EmptinessCheckTime: 0.0s, AutomataDifference: 824.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2815 SdHoareTripleChecker+Valid, 7.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2815 mSDsluCounter, 456 SdHoareTripleChecker+Invalid, 5.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 319 mSDsCounter, 728 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14944 IncrementalHoareTripleChecker+Invalid, 15672 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 728 mSolverCounterUnsat, 137 mSDtfsCounter, 14944 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2955 GetRequests, 1785 SyntacticMatches, 61 SemanticMatches, 1109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14140 ImplicationChecksByTransitivity, 11.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=281239occurred in iteration=35, InterpolantAutomatonStates: 852, 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: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 10.9s InterpolantComputationTime, 1827 NumberOfCodeBlocks, 1812 NumberOfCodeBlocksAsserted, 124 NumberOfCheckSat, 2604 ConstructedInterpolants, 0 QuantifiedInterpolants, 15132 SizeOfPredicates, 282 NumberOfNonLiveVariables, 5327 ConjunctsInSsa, 332 ConjunctsInUnsatCore, 99 InterpolantComputations, 5 PerfectInterpolantSequences, 432/1728 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