/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/weaver/popl20-figure1-alt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 06:06:13,842 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 06:06:13,908 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-25 06:06:13,912 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 06:06:13,913 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 06:06:13,936 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 06:06:13,937 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 06:06:13,940 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 06:06:13,941 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 06:06:13,943 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 06:06:13,943 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 06:06:13,944 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 06:06:13,944 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 06:06:13,945 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 06:06:13,945 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 06:06:13,945 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 06:06:13,945 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 06:06:13,945 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 06:06:13,945 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 06:06:13,946 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 06:06:13,946 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 06:06:13,946 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 06:06:13,946 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 06:06:13,947 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 06:06:13,947 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 06:06:13,947 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 06:06:13,947 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 06:06:13,947 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 06:06:13,948 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 06:06:13,948 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 06:06:13,948 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 06:06:13,949 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 06:06:13,949 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 06:06:13,949 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 06:06:13,949 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 06:06:13,949 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 06:06:14,187 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 06:06:14,204 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 06:06:14,206 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 06:06:14,207 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 06:06:14,207 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 06:06:14,208 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-figure1-alt.wvr.c [2023-08-25 06:06:15,223 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 06:06:15,430 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 06:06:15,430 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-figure1-alt.wvr.c [2023-08-25 06:06:15,437 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc5aa7119/2999dc2d561844febf6628b4bd646f50/FLAG56868dbfc [2023-08-25 06:06:15,449 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc5aa7119/2999dc2d561844febf6628b4bd646f50 [2023-08-25 06:06:15,453 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 06:06:15,454 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 06:06:15,456 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 06:06:15,456 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 06:06:15,458 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 06:06:15,459 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 06:06:15" (1/1) ... [2023-08-25 06:06:15,460 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9dd5eff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:06:15, skipping insertion in model container [2023-08-25 06:06:15,460 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 06:06:15" (1/1) ... [2023-08-25 06:06:15,474 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 06:06:15,611 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 06:06:15,619 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 06:06:15,646 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 06:06:15,655 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 06:06:15,655 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 06:06:15,660 INFO L206 MainTranslator]: Completed translation [2023-08-25 06:06:15,660 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:06:15 WrapperNode [2023-08-25 06:06:15,660 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 06:06:15,661 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 06:06:15,661 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 06:06:15,661 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 06:06:15,666 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:06:15" (1/1) ... [2023-08-25 06:06:15,677 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:06:15" (1/1) ... [2023-08-25 06:06:15,699 INFO L138 Inliner]: procedures = 21, calls = 26, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 123 [2023-08-25 06:06:15,700 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 06:06:15,701 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 06:06:15,701 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 06:06:15,701 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 06:06:15,707 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:06:15" (1/1) ... [2023-08-25 06:06:15,707 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:06:15" (1/1) ... [2023-08-25 06:06:15,718 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:06:15" (1/1) ... [2023-08-25 06:06:15,719 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:06:15" (1/1) ... [2023-08-25 06:06:15,725 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:06:15" (1/1) ... [2023-08-25 06:06:15,727 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:06:15" (1/1) ... [2023-08-25 06:06:15,727 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:06:15" (1/1) ... [2023-08-25 06:06:15,728 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:06:15" (1/1) ... [2023-08-25 06:06:15,729 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 06:06:15,730 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 06:06:15,730 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 06:06:15,730 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 06:06:15,730 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:06:15" (1/1) ... [2023-08-25 06:06:15,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 06:06:15,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:06:15,766 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-25 06:06:15,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-25 06:06:15,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 06:06:15,788 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-25 06:06:15,789 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-25 06:06:15,789 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-25 06:06:15,789 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-25 06:06:15,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 06:06:15,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 06:06:15,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 06:06:15,789 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-25 06:06:15,789 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-25 06:06:15,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 06:06:15,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 06:06:15,789 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 06:06:15,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 06:06:15,790 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-25 06:06:15,852 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 06:06:15,854 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 06:06:16,109 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 06:06:16,154 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 06:06:16,154 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-25 06:06:16,156 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 06:06:16 BoogieIcfgContainer [2023-08-25 06:06:16,156 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 06:06:16,157 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 06:06:16,157 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 06:06:16,159 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 06:06:16,159 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 06:06:15" (1/3) ... [2023-08-25 06:06:16,160 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ad442af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 06:06:16, skipping insertion in model container [2023-08-25 06:06:16,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:06:15" (2/3) ... [2023-08-25 06:06:16,160 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ad442af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 06:06:16, skipping insertion in model container [2023-08-25 06:06:16,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 06:06:16" (3/3) ... [2023-08-25 06:06:16,161 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-figure1-alt.wvr.c [2023-08-25 06:06:16,172 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 06:06:16,172 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2023-08-25 06:06:16,172 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 06:06:16,223 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-25 06:06:16,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 140 transitions, 296 flow [2023-08-25 06:06:16,289 INFO L124 PetriNetUnfolderBase]: 7/138 cut-off events. [2023-08-25 06:06:16,289 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 06:06:16,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 138 events. 7/138 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 126 event pairs, 0 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 76. Up to 2 conditions per place. [2023-08-25 06:06:16,299 INFO L82 GeneralOperation]: Start removeDead. Operand has 140 places, 140 transitions, 296 flow [2023-08-25 06:06:16,303 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 129 transitions, 270 flow [2023-08-25 06:06:16,305 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 06:06:16,318 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 129 places, 129 transitions, 270 flow [2023-08-25 06:06:16,324 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 129 places, 129 transitions, 270 flow [2023-08-25 06:06:16,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 129 transitions, 270 flow [2023-08-25 06:06:16,367 INFO L124 PetriNetUnfolderBase]: 7/129 cut-off events. [2023-08-25 06:06:16,368 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 06:06:16,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 129 events. 7/129 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 125 event pairs, 0 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 76. Up to 2 conditions per place. [2023-08-25 06:06:16,372 INFO L119 LiptonReduction]: Number of co-enabled transitions 1636 [2023-08-25 06:06:19,311 INFO L134 LiptonReduction]: Checked pairs total: 1797 [2023-08-25 06:06:19,311 INFO L136 LiptonReduction]: Total number of compositions: 153 [2023-08-25 06:06:19,334 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 06:06:19,339 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;@130a2c21, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 06:06:19,340 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2023-08-25 06:06:19,341 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 06:06:19,341 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-25 06:06:19,341 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 06:06:19,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:06:19,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-25 06:06:19,342 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 06:06:19,346 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:06:19,346 INFO L85 PathProgramCache]: Analyzing trace with hash 587, now seen corresponding path program 1 times [2023-08-25 06:06:19,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:06:19,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98866862] [2023-08-25 06:06:19,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:19,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:06:19,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:19,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:19,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:06:19,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98866862] [2023-08-25 06:06:19,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98866862] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 06:06:19,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 06:06:19,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-25 06:06:19,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240992744] [2023-08-25 06:06:19,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 06:06:19,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 06:06:19,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:06:19,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 06:06:19,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 06:06:19,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 293 [2023-08-25 06:06:19,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 74 flow. Second operand has 2 states, 2 states have (on average 124.5) internal successors, (249), 2 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:19,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:06:19,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 293 [2023-08-25 06:06:19,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:06:19,518 INFO L124 PetriNetUnfolderBase]: 44/77 cut-off events. [2023-08-25 06:06:19,518 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-25 06:06:19,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 77 events. 44/77 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 182 event pairs, 18 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 120. Up to 74 conditions per place. [2023-08-25 06:06:19,520 INFO L140 encePairwiseOnDemand]: 277/293 looper letters, 13 selfloop transitions, 0 changer transitions 0/15 dead transitions. [2023-08-25 06:06:19,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 15 transitions, 68 flow [2023-08-25 06:06:19,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 06:06:19,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 06:06:19,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 277 transitions. [2023-08-25 06:06:19,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4726962457337884 [2023-08-25 06:06:19,534 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 277 transitions. [2023-08-25 06:06:19,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 277 transitions. [2023-08-25 06:06:19,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:06:19,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 277 transitions. [2023-08-25 06:06:19,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 138.5) internal successors, (277), 2 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:19,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 293.0) internal successors, (879), 3 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:19,546 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 293.0) internal successors, (879), 3 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:19,547 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 74 flow. Second operand 2 states and 277 transitions. [2023-08-25 06:06:19,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 15 transitions, 68 flow [2023-08-25 06:06:19,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 15 transitions, 60 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 06:06:19,551 INFO L231 Difference]: Finished difference. Result has 17 places, 15 transitions, 34 flow [2023-08-25 06:06:19,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=34, PETRI_PLACES=17, PETRI_TRANSITIONS=15} [2023-08-25 06:06:19,556 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -19 predicate places. [2023-08-25 06:06:19,556 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 15 transitions, 34 flow [2023-08-25 06:06:19,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 124.5) internal successors, (249), 2 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:19,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:06:19,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:06:19,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 06:06:19,557 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 06:06:19,558 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:06:19,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1136544362, now seen corresponding path program 1 times [2023-08-25 06:06:19,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:06:19,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880906987] [2023-08-25 06:06:19,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:19,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:06:19,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:20,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:20,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:06:20,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880906987] [2023-08-25 06:06:20,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880906987] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 06:06:20,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 06:06:20,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 06:06:20,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244372139] [2023-08-25 06:06:20,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 06:06:20,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 06:06:20,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:06:20,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 06:06:20,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-25 06:06:20,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 06:06:20,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 15 transitions, 34 flow. Second operand has 7 states, 7 states have (on average 105.85714285714286) internal successors, (741), 7 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:20,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:06:20,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 06:06:20,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:06:20,117 INFO L124 PetriNetUnfolderBase]: 62/128 cut-off events. [2023-08-25 06:06:20,117 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 06:06:20,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 128 events. 62/128 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 426 event pairs, 2 based on Foata normal form. 1/107 useless extension candidates. Maximal degree in co-relation 262. Up to 61 conditions per place. [2023-08-25 06:06:20,118 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 29 selfloop transitions, 4 changer transitions 11/44 dead transitions. [2023-08-25 06:06:20,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 44 transitions, 188 flow [2023-08-25 06:06:20,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-25 06:06:20,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-25 06:06:20,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 777 transitions. [2023-08-25 06:06:20,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378839590443686 [2023-08-25 06:06:20,121 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 777 transitions. [2023-08-25 06:06:20,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 777 transitions. [2023-08-25 06:06:20,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:06:20,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 777 transitions. [2023-08-25 06:06:20,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 111.0) internal successors, (777), 7 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:20,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 293.0) internal successors, (2344), 8 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:20,128 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 293.0) internal successors, (2344), 8 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:20,128 INFO L175 Difference]: Start difference. First operand has 17 places, 15 transitions, 34 flow. Second operand 7 states and 777 transitions. [2023-08-25 06:06:20,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 44 transitions, 188 flow [2023-08-25 06:06:20,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 44 transitions, 188 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 06:06:20,129 INFO L231 Difference]: Finished difference. Result has 28 places, 17 transitions, 70 flow [2023-08-25 06:06:20,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=70, PETRI_PLACES=28, PETRI_TRANSITIONS=17} [2023-08-25 06:06:20,130 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -8 predicate places. [2023-08-25 06:06:20,130 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 17 transitions, 70 flow [2023-08-25 06:06:20,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 105.85714285714286) internal successors, (741), 7 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:20,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:06:20,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:06:20,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 06:06:20,131 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 06:06:20,131 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:06:20,132 INFO L85 PathProgramCache]: Analyzing trace with hash 805751844, now seen corresponding path program 2 times [2023-08-25 06:06:20,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:06:20,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717141069] [2023-08-25 06:06:20,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:20,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:06:20,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:20,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:20,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:06:20,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717141069] [2023-08-25 06:06:20,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717141069] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 06:06:20,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 06:06:20,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 06:06:20,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771699109] [2023-08-25 06:06:20,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 06:06:20,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 06:06:20,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:06:20,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 06:06:20,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-25 06:06:20,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 06:06:20,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 17 transitions, 70 flow. Second operand has 7 states, 7 states have (on average 105.85714285714286) internal successors, (741), 7 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:20,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:06:20,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 06:06:20,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:06:20,458 INFO L124 PetriNetUnfolderBase]: 58/122 cut-off events. [2023-08-25 06:06:20,458 INFO L125 PetriNetUnfolderBase]: For 99/99 co-relation queries the response was YES. [2023-08-25 06:06:20,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 382 conditions, 122 events. 58/122 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 352 event pairs, 14 based on Foata normal form. 1/115 useless extension candidates. Maximal degree in co-relation 373. Up to 63 conditions per place. [2023-08-25 06:06:20,460 INFO L140 encePairwiseOnDemand]: 286/293 looper letters, 29 selfloop transitions, 8 changer transitions 8/45 dead transitions. [2023-08-25 06:06:20,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 45 transitions, 258 flow [2023-08-25 06:06:20,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-25 06:06:20,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-25 06:06:20,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 774 transitions. [2023-08-25 06:06:20,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3773768893222818 [2023-08-25 06:06:20,464 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 774 transitions. [2023-08-25 06:06:20,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 774 transitions. [2023-08-25 06:06:20,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:06:20,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 774 transitions. [2023-08-25 06:06:20,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 110.57142857142857) internal successors, (774), 7 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:20,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 293.0) internal successors, (2344), 8 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:20,470 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 293.0) internal successors, (2344), 8 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:20,470 INFO L175 Difference]: Start difference. First operand has 28 places, 17 transitions, 70 flow. Second operand 7 states and 774 transitions. [2023-08-25 06:06:20,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 45 transitions, 258 flow [2023-08-25 06:06:20,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 45 transitions, 231 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-08-25 06:06:20,473 INFO L231 Difference]: Finished difference. Result has 33 places, 23 transitions, 112 flow [2023-08-25 06:06:20,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=112, PETRI_PLACES=33, PETRI_TRANSITIONS=23} [2023-08-25 06:06:20,474 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -3 predicate places. [2023-08-25 06:06:20,474 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 23 transitions, 112 flow [2023-08-25 06:06:20,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 105.85714285714286) internal successors, (741), 7 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:20,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:06:20,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:06:20,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 06:06:20,475 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 06:06:20,475 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:06:20,475 INFO L85 PathProgramCache]: Analyzing trace with hash 688208906, now seen corresponding path program 3 times [2023-08-25 06:06:20,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:06:20,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477770443] [2023-08-25 06:06:20,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:20,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:06:20,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:20,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:20,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:06:20,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477770443] [2023-08-25 06:06:20,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477770443] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 06:06:20,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 06:06:20,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 06:06:20,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026957118] [2023-08-25 06:06:20,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 06:06:20,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 06:06:20,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:06:20,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 06:06:20,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-25 06:06:20,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 06:06:20,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 23 transitions, 112 flow. Second operand has 7 states, 7 states have (on average 105.85714285714286) internal successors, (741), 7 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:20,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:06:20,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 06:06:20,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:06:20,760 INFO L124 PetriNetUnfolderBase]: 64/134 cut-off events. [2023-08-25 06:06:20,760 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2023-08-25 06:06:20,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 461 conditions, 134 events. 64/134 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 413 event pairs, 14 based on Foata normal form. 1/127 useless extension candidates. Maximal degree in co-relation 449. Up to 65 conditions per place. [2023-08-25 06:06:20,762 INFO L140 encePairwiseOnDemand]: 286/293 looper letters, 28 selfloop transitions, 10 changer transitions 9/47 dead transitions. [2023-08-25 06:06:20,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 47 transitions, 290 flow [2023-08-25 06:06:20,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-25 06:06:20,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-25 06:06:20,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 772 transitions. [2023-08-25 06:06:20,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37640175524134567 [2023-08-25 06:06:20,764 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 772 transitions. [2023-08-25 06:06:20,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 772 transitions. [2023-08-25 06:06:20,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:06:20,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 772 transitions. [2023-08-25 06:06:20,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 110.28571428571429) internal successors, (772), 7 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:20,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 293.0) internal successors, (2344), 8 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:20,769 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 293.0) internal successors, (2344), 8 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:20,769 INFO L175 Difference]: Start difference. First operand has 33 places, 23 transitions, 112 flow. Second operand 7 states and 772 transitions. [2023-08-25 06:06:20,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 47 transitions, 290 flow [2023-08-25 06:06:20,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 47 transitions, 280 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-25 06:06:20,770 INFO L231 Difference]: Finished difference. Result has 40 places, 26 transitions, 164 flow [2023-08-25 06:06:20,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=164, PETRI_PLACES=40, PETRI_TRANSITIONS=26} [2023-08-25 06:06:20,771 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 4 predicate places. [2023-08-25 06:06:20,771 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 26 transitions, 164 flow [2023-08-25 06:06:20,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 105.85714285714286) internal successors, (741), 7 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:20,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:06:20,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:06:20,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 06:06:20,772 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 06:06:20,772 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:06:20,773 INFO L85 PathProgramCache]: Analyzing trace with hash -61799644, now seen corresponding path program 4 times [2023-08-25 06:06:20,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:06:20,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890210866] [2023-08-25 06:06:20,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:20,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:06:20,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:20,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:20,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:06:20,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890210866] [2023-08-25 06:06:20,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890210866] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 06:06:20,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 06:06:20,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 06:06:20,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466034137] [2023-08-25 06:06:20,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 06:06:20,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 06:06:20,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:06:20,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 06:06:20,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-25 06:06:20,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 06:06:20,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 26 transitions, 164 flow. Second operand has 7 states, 7 states have (on average 105.85714285714286) internal successors, (741), 7 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:20,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:06:20,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 06:06:20,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:06:21,010 INFO L124 PetriNetUnfolderBase]: 59/125 cut-off events. [2023-08-25 06:06:21,010 INFO L125 PetriNetUnfolderBase]: For 253/253 co-relation queries the response was YES. [2023-08-25 06:06:21,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 487 conditions, 125 events. 59/125 cut-off events. For 253/253 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 368 event pairs, 18 based on Foata normal form. 1/118 useless extension candidates. Maximal degree in co-relation 472. Up to 65 conditions per place. [2023-08-25 06:06:21,011 INFO L140 encePairwiseOnDemand]: 286/293 looper letters, 25 selfloop transitions, 12 changer transitions 9/46 dead transitions. [2023-08-25 06:06:21,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 46 transitions, 336 flow [2023-08-25 06:06:21,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-25 06:06:21,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-25 06:06:21,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 770 transitions. [2023-08-25 06:06:21,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37542662116040953 [2023-08-25 06:06:21,013 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 770 transitions. [2023-08-25 06:06:21,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 770 transitions. [2023-08-25 06:06:21,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:06:21,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 770 transitions. [2023-08-25 06:06:21,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 110.0) internal successors, (770), 7 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:21,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 293.0) internal successors, (2344), 8 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:21,017 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 293.0) internal successors, (2344), 8 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:21,017 INFO L175 Difference]: Start difference. First operand has 40 places, 26 transitions, 164 flow. Second operand 7 states and 770 transitions. [2023-08-25 06:06:21,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 46 transitions, 336 flow [2023-08-25 06:06:21,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 46 transitions, 316 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-08-25 06:06:21,020 INFO L231 Difference]: Finished difference. Result has 43 places, 28 transitions, 207 flow [2023-08-25 06:06:21,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=207, PETRI_PLACES=43, PETRI_TRANSITIONS=28} [2023-08-25 06:06:21,020 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 7 predicate places. [2023-08-25 06:06:21,020 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 28 transitions, 207 flow [2023-08-25 06:06:21,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 105.85714285714286) internal successors, (741), 7 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:21,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:06:21,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:06:21,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-25 06:06:21,021 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 06:06:21,021 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:06:21,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1198145606, now seen corresponding path program 5 times [2023-08-25 06:06:21,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:06:21,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525871606] [2023-08-25 06:06:21,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:21,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:06:21,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:21,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:21,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:06:21,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525871606] [2023-08-25 06:06:21,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525871606] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 06:06:21,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 06:06:21,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 06:06:21,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072869144] [2023-08-25 06:06:21,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 06:06:21,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 06:06:21,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:06:21,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 06:06:21,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-25 06:06:21,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 06:06:21,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 28 transitions, 207 flow. Second operand has 7 states, 7 states have (on average 105.85714285714286) internal successors, (741), 7 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:21,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:06:21,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 06:06:21,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:06:21,268 INFO L124 PetriNetUnfolderBase]: 57/121 cut-off events. [2023-08-25 06:06:21,268 INFO L125 PetriNetUnfolderBase]: For 252/252 co-relation queries the response was YES. [2023-08-25 06:06:21,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 502 conditions, 121 events. 57/121 cut-off events. For 252/252 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 345 event pairs, 14 based on Foata normal form. 1/114 useless extension candidates. Maximal degree in co-relation 486. Up to 67 conditions per place. [2023-08-25 06:06:21,269 INFO L140 encePairwiseOnDemand]: 286/293 looper letters, 28 selfloop transitions, 13 changer transitions 5/46 dead transitions. [2023-08-25 06:06:21,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 46 transitions, 359 flow [2023-08-25 06:06:21,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-25 06:06:21,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-25 06:06:21,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 770 transitions. [2023-08-25 06:06:21,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37542662116040953 [2023-08-25 06:06:21,271 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 770 transitions. [2023-08-25 06:06:21,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 770 transitions. [2023-08-25 06:06:21,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:06:21,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 770 transitions. [2023-08-25 06:06:21,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 110.0) internal successors, (770), 7 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:21,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 293.0) internal successors, (2344), 8 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:21,275 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 293.0) internal successors, (2344), 8 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:21,275 INFO L175 Difference]: Start difference. First operand has 43 places, 28 transitions, 207 flow. Second operand 7 states and 770 transitions. [2023-08-25 06:06:21,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 46 transitions, 359 flow [2023-08-25 06:06:21,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 46 transitions, 325 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-08-25 06:06:21,278 INFO L231 Difference]: Finished difference. Result has 44 places, 29 transitions, 211 flow [2023-08-25 06:06:21,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=211, PETRI_PLACES=44, PETRI_TRANSITIONS=29} [2023-08-25 06:06:21,279 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 8 predicate places. [2023-08-25 06:06:21,279 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 29 transitions, 211 flow [2023-08-25 06:06:21,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 105.85714285714286) internal successors, (741), 7 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:21,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:06:21,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:06:21,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-25 06:06:21,280 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 06:06:21,280 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:06:21,280 INFO L85 PathProgramCache]: Analyzing trace with hash -34094014, now seen corresponding path program 6 times [2023-08-25 06:06:21,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:06:21,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667942483] [2023-08-25 06:06:21,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:21,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:06:21,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:21,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:21,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:06:21,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667942483] [2023-08-25 06:06:21,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667942483] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 06:06:21,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 06:06:21,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 06:06:21,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037432032] [2023-08-25 06:06:21,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 06:06:21,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 06:06:21,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:06:21,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 06:06:21,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-25 06:06:21,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 06:06:21,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 29 transitions, 211 flow. Second operand has 7 states, 7 states have (on average 105.85714285714286) internal successors, (741), 7 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:21,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:06:21,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 06:06:21,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:06:21,513 INFO L124 PetriNetUnfolderBase]: 56/114 cut-off events. [2023-08-25 06:06:21,514 INFO L125 PetriNetUnfolderBase]: For 325/325 co-relation queries the response was YES. [2023-08-25 06:06:21,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 475 conditions, 114 events. 56/114 cut-off events. For 325/325 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 306 event pairs, 17 based on Foata normal form. 1/107 useless extension candidates. Maximal degree in co-relation 459. Up to 67 conditions per place. [2023-08-25 06:06:21,514 INFO L140 encePairwiseOnDemand]: 286/293 looper letters, 21 selfloop transitions, 13 changer transitions 8/42 dead transitions. [2023-08-25 06:06:21,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 42 transitions, 337 flow [2023-08-25 06:06:21,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-25 06:06:21,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-25 06:06:21,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 766 transitions. [2023-08-25 06:06:21,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3734763529985373 [2023-08-25 06:06:21,517 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 766 transitions. [2023-08-25 06:06:21,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 766 transitions. [2023-08-25 06:06:21,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:06:21,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 766 transitions. [2023-08-25 06:06:21,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.42857142857143) internal successors, (766), 7 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:21,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 293.0) internal successors, (2344), 8 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:21,521 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 293.0) internal successors, (2344), 8 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:21,521 INFO L175 Difference]: Start difference. First operand has 44 places, 29 transitions, 211 flow. Second operand 7 states and 766 transitions. [2023-08-25 06:06:21,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 42 transitions, 337 flow [2023-08-25 06:06:21,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 42 transitions, 292 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-08-25 06:06:21,523 INFO L231 Difference]: Finished difference. Result has 44 places, 28 transitions, 188 flow [2023-08-25 06:06:21,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=188, PETRI_PLACES=44, PETRI_TRANSITIONS=28} [2023-08-25 06:06:21,523 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 8 predicate places. [2023-08-25 06:06:21,523 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 28 transitions, 188 flow [2023-08-25 06:06:21,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 105.85714285714286) internal successors, (741), 7 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:21,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:06:21,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:06:21,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-25 06:06:21,524 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 06:06:21,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:06:21,525 INFO L85 PathProgramCache]: Analyzing trace with hash 436351151, now seen corresponding path program 1 times [2023-08-25 06:06:21,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:06:21,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170683196] [2023-08-25 06:06:21,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:21,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:06:21,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:21,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:21,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:06:21,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170683196] [2023-08-25 06:06:21,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170683196] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:06:21,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167638601] [2023-08-25 06:06:21,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:21,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:21,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:06:21,691 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:06:21,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-25 06:06:21,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:21,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-25 06:06:21,800 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:06:21,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:21,935 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:06:22,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:22,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167638601] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:06:22,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:06:22,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-08-25 06:06:22,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084043959] [2023-08-25 06:06:22,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:06:22,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-25 06:06:22,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:06:22,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-25 06:06:22,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2023-08-25 06:06:22,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 06:06:22,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 28 transitions, 188 flow. Second operand has 17 states, 17 states have (on average 105.88235294117646) internal successors, (1800), 17 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:22,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:06:22,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 06:06:22,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:06:22,476 INFO L124 PetriNetUnfolderBase]: 120/246 cut-off events. [2023-08-25 06:06:22,477 INFO L125 PetriNetUnfolderBase]: For 235/235 co-relation queries the response was YES. [2023-08-25 06:06:22,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 811 conditions, 246 events. 120/246 cut-off events. For 235/235 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 943 event pairs, 6 based on Foata normal form. 13/235 useless extension candidates. Maximal degree in co-relation 795. Up to 89 conditions per place. [2023-08-25 06:06:22,479 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 53 selfloop transitions, 22 changer transitions 25/100 dead transitions. [2023-08-25 06:06:22,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 100 transitions, 622 flow [2023-08-25 06:06:22,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-25 06:06:22,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-25 06:06:22,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1760 transitions. [2023-08-25 06:06:22,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37542662116040953 [2023-08-25 06:06:22,483 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1760 transitions. [2023-08-25 06:06:22,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1760 transitions. [2023-08-25 06:06:22,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:06:22,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1760 transitions. [2023-08-25 06:06:22,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 110.0) internal successors, (1760), 16 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:22,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 293.0) internal successors, (4981), 17 states have internal predecessors, (4981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:22,493 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 293.0) internal successors, (4981), 17 states have internal predecessors, (4981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:22,493 INFO L175 Difference]: Start difference. First operand has 44 places, 28 transitions, 188 flow. Second operand 16 states and 1760 transitions. [2023-08-25 06:06:22,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 100 transitions, 622 flow [2023-08-25 06:06:22,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 100 transitions, 575 flow, removed 9 selfloop flow, removed 8 redundant places. [2023-08-25 06:06:22,497 INFO L231 Difference]: Finished difference. Result has 60 places, 40 transitions, 309 flow [2023-08-25 06:06:22,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=309, PETRI_PLACES=60, PETRI_TRANSITIONS=40} [2023-08-25 06:06:22,499 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 24 predicate places. [2023-08-25 06:06:22,499 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 40 transitions, 309 flow [2023-08-25 06:06:22,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 105.88235294117646) internal successors, (1800), 17 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:22,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:06:22,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:06:22,507 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 06:06:22,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:22,705 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 06:06:22,706 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:06:22,706 INFO L85 PathProgramCache]: Analyzing trace with hash 360851905, now seen corresponding path program 2 times [2023-08-25 06:06:22,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:06:22,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799736298] [2023-08-25 06:06:22,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:22,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:06:22,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:22,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:22,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:06:22,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799736298] [2023-08-25 06:06:22,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799736298] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:06:22,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119071476] [2023-08-25 06:06:22,882 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 06:06:22,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:22,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:06:22,901 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:06:22,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-25 06:06:22,979 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 06:06:22,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:06:22,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-25 06:06:22,982 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:06:23,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:23,097 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:06:23,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:23,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119071476] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:06:23,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:06:23,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-08-25 06:06:23,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121525214] [2023-08-25 06:06:23,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:06:23,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-25 06:06:23,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:06:23,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-25 06:06:23,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2023-08-25 06:06:23,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 06:06:23,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 40 transitions, 309 flow. Second operand has 17 states, 17 states have (on average 105.88235294117646) internal successors, (1800), 17 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:23,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:06:23,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 06:06:23,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:06:24,052 INFO L124 PetriNetUnfolderBase]: 169/373 cut-off events. [2023-08-25 06:06:24,052 INFO L125 PetriNetUnfolderBase]: For 1019/1019 co-relation queries the response was YES. [2023-08-25 06:06:24,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1606 conditions, 373 events. 169/373 cut-off events. For 1019/1019 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1748 event pairs, 10 based on Foata normal form. 3/376 useless extension candidates. Maximal degree in co-relation 1583. Up to 143 conditions per place. [2023-08-25 06:06:24,055 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 90 selfloop transitions, 47 changer transitions 18/155 dead transitions. [2023-08-25 06:06:24,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 155 transitions, 1182 flow [2023-08-25 06:06:24,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-25 06:06:24,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-25 06:06:24,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2847 transitions. [2023-08-25 06:06:24,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37372013651877134 [2023-08-25 06:06:24,062 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2847 transitions. [2023-08-25 06:06:24,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2847 transitions. [2023-08-25 06:06:24,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:06:24,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2847 transitions. [2023-08-25 06:06:24,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 109.5) internal successors, (2847), 26 states have internal predecessors, (2847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:24,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 293.0) internal successors, (7911), 27 states have internal predecessors, (7911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:24,076 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 293.0) internal successors, (7911), 27 states have internal predecessors, (7911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:24,077 INFO L175 Difference]: Start difference. First operand has 60 places, 40 transitions, 309 flow. Second operand 26 states and 2847 transitions. [2023-08-25 06:06:24,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 155 transitions, 1182 flow [2023-08-25 06:06:24,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 155 transitions, 1027 flow, removed 71 selfloop flow, removed 7 redundant places. [2023-08-25 06:06:24,082 INFO L231 Difference]: Finished difference. Result has 84 places, 67 transitions, 598 flow [2023-08-25 06:06:24,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=598, PETRI_PLACES=84, PETRI_TRANSITIONS=67} [2023-08-25 06:06:24,083 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 48 predicate places. [2023-08-25 06:06:24,083 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 67 transitions, 598 flow [2023-08-25 06:06:24,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 105.88235294117646) internal successors, (1800), 17 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:24,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:06:24,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:06:24,092 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 06:06:24,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-08-25 06:06:24,290 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 06:06:24,290 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:06:24,291 INFO L85 PathProgramCache]: Analyzing trace with hash 222006625, now seen corresponding path program 3 times [2023-08-25 06:06:24,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:06:24,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762218929] [2023-08-25 06:06:24,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:24,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:06:24,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:24,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:24,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:06:24,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762218929] [2023-08-25 06:06:24,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762218929] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:06:24,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482727627] [2023-08-25 06:06:24,462 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 06:06:24,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:24,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:06:24,463 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:06:24,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-25 06:06:24,535 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-25 06:06:24,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:06:24,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-25 06:06:24,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:06:24,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:24,628 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:06:24,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:24,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482727627] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:06:24,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:06:24,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-08-25 06:06:24,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783446295] [2023-08-25 06:06:24,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:06:24,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-25 06:06:24,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:06:24,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-25 06:06:24,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2023-08-25 06:06:24,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 06:06:24,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 67 transitions, 598 flow. Second operand has 17 states, 17 states have (on average 106.0) internal successors, (1802), 17 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:24,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:06:24,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 06:06:24,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:06:25,315 INFO L124 PetriNetUnfolderBase]: 164/349 cut-off events. [2023-08-25 06:06:25,315 INFO L125 PetriNetUnfolderBase]: For 1888/1888 co-relation queries the response was YES. [2023-08-25 06:06:25,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1766 conditions, 349 events. 164/349 cut-off events. For 1888/1888 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1541 event pairs, 10 based on Foata normal form. 4/353 useless extension candidates. Maximal degree in co-relation 1737. Up to 89 conditions per place. [2023-08-25 06:06:25,318 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 65 selfloop transitions, 37 changer transitions 34/136 dead transitions. [2023-08-25 06:06:25,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 136 transitions, 1152 flow [2023-08-25 06:06:25,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-25 06:06:25,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-25 06:06:25,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2306 transitions. [2023-08-25 06:06:25,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3747765317731188 [2023-08-25 06:06:25,323 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2306 transitions. [2023-08-25 06:06:25,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2306 transitions. [2023-08-25 06:06:25,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:06:25,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2306 transitions. [2023-08-25 06:06:25,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 109.80952380952381) internal successors, (2306), 21 states have internal predecessors, (2306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:25,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 293.0) internal successors, (6446), 22 states have internal predecessors, (6446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:25,333 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 293.0) internal successors, (6446), 22 states have internal predecessors, (6446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:25,334 INFO L175 Difference]: Start difference. First operand has 84 places, 67 transitions, 598 flow. Second operand 21 states and 2306 transitions. [2023-08-25 06:06:25,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 136 transitions, 1152 flow [2023-08-25 06:06:25,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 136 transitions, 991 flow, removed 62 selfloop flow, removed 7 redundant places. [2023-08-25 06:06:25,341 INFO L231 Difference]: Finished difference. Result has 99 places, 61 transitions, 487 flow [2023-08-25 06:06:25,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=487, PETRI_PLACES=99, PETRI_TRANSITIONS=61} [2023-08-25 06:06:25,342 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 63 predicate places. [2023-08-25 06:06:25,342 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 61 transitions, 487 flow [2023-08-25 06:06:25,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 106.0) internal successors, (1802), 17 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:25,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:06:25,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:06:25,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-25 06:06:25,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:25,549 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 06:06:25,550 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:06:25,550 INFO L85 PathProgramCache]: Analyzing trace with hash -799713853, now seen corresponding path program 4 times [2023-08-25 06:06:25,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:06:25,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150328625] [2023-08-25 06:06:25,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:25,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:06:25,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:25,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:25,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:06:25,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150328625] [2023-08-25 06:06:25,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150328625] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:06:25,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472259563] [2023-08-25 06:06:25,659 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 06:06:25,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:25,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:06:25,660 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:06:25,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-25 06:06:25,735 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 06:06:25,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:06:25,736 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-25 06:06:25,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:06:25,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:25,820 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:06:25,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:25,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472259563] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:06:25,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:06:25,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-08-25 06:06:25,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114772179] [2023-08-25 06:06:25,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:06:25,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-25 06:06:25,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:06:25,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-25 06:06:25,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2023-08-25 06:06:25,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 06:06:25,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 61 transitions, 487 flow. Second operand has 16 states, 16 states have (on average 106.0) internal successors, (1696), 16 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:25,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:06:25,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 06:06:25,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:06:26,133 INFO L124 PetriNetUnfolderBase]: 171/345 cut-off events. [2023-08-25 06:06:26,134 INFO L125 PetriNetUnfolderBase]: For 2103/2103 co-relation queries the response was YES. [2023-08-25 06:06:26,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1727 conditions, 345 events. 171/345 cut-off events. For 2103/2103 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1414 event pairs, 16 based on Foata normal form. 3/348 useless extension candidates. Maximal degree in co-relation 1696. Up to 203 conditions per place. [2023-08-25 06:06:26,136 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 49 selfloop transitions, 26 changer transitions 26/101 dead transitions. [2023-08-25 06:06:26,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 101 transitions, 892 flow [2023-08-25 06:06:26,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-25 06:06:26,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-25 06:06:26,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1415 transitions. [2023-08-25 06:06:26,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37148857967970594 [2023-08-25 06:06:26,139 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1415 transitions. [2023-08-25 06:06:26,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1415 transitions. [2023-08-25 06:06:26,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:06:26,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1415 transitions. [2023-08-25 06:06:26,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 108.84615384615384) internal successors, (1415), 13 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:26,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 293.0) internal successors, (4102), 14 states have internal predecessors, (4102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:26,145 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 293.0) internal successors, (4102), 14 states have internal predecessors, (4102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:26,146 INFO L175 Difference]: Start difference. First operand has 99 places, 61 transitions, 487 flow. Second operand 13 states and 1415 transitions. [2023-08-25 06:06:26,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 101 transitions, 892 flow [2023-08-25 06:06:26,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 101 transitions, 754 flow, removed 16 selfloop flow, removed 22 redundant places. [2023-08-25 06:06:26,150 INFO L231 Difference]: Finished difference. Result has 81 places, 59 transitions, 476 flow [2023-08-25 06:06:26,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=476, PETRI_PLACES=81, PETRI_TRANSITIONS=59} [2023-08-25 06:06:26,151 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 45 predicate places. [2023-08-25 06:06:26,151 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 59 transitions, 476 flow [2023-08-25 06:06:26,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 106.0) internal successors, (1696), 16 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:26,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:06:26,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:06:26,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-25 06:06:26,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:26,358 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 06:06:26,358 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:06:26,358 INFO L85 PathProgramCache]: Analyzing trace with hash 58566031, now seen corresponding path program 5 times [2023-08-25 06:06:26,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:06:26,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569732789] [2023-08-25 06:06:26,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:26,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:06:26,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:26,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:26,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:06:26,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569732789] [2023-08-25 06:06:26,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569732789] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:06:26,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775685330] [2023-08-25 06:06:26,485 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 06:06:26,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:26,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:06:26,486 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:06:26,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-25 06:06:26,547 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 06:06:26,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:06:26,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-25 06:06:26,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:06:26,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:26,645 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:06:26,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:26,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775685330] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:06:26,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:06:26,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-08-25 06:06:26,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4444882] [2023-08-25 06:06:26,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:06:26,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-25 06:06:26,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:06:26,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-25 06:06:26,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2023-08-25 06:06:26,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 06:06:26,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 59 transitions, 476 flow. Second operand has 17 states, 17 states have (on average 105.88235294117646) internal successors, (1800), 17 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:26,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:06:26,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 06:06:26,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:06:27,220 INFO L124 PetriNetUnfolderBase]: 178/378 cut-off events. [2023-08-25 06:06:27,220 INFO L125 PetriNetUnfolderBase]: For 1576/1576 co-relation queries the response was YES. [2023-08-25 06:06:27,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1768 conditions, 378 events. 178/378 cut-off events. For 1576/1576 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1693 event pairs, 18 based on Foata normal form. 3/381 useless extension candidates. Maximal degree in co-relation 1740. Up to 211 conditions per place. [2023-08-25 06:06:27,223 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 72 selfloop transitions, 37 changer transitions 19/128 dead transitions. [2023-08-25 06:06:27,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 128 transitions, 1045 flow [2023-08-25 06:06:27,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-25 06:06:27,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-25 06:06:27,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2286 transitions. [2023-08-25 06:06:27,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37152608483666505 [2023-08-25 06:06:27,227 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2286 transitions. [2023-08-25 06:06:27,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2286 transitions. [2023-08-25 06:06:27,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:06:27,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2286 transitions. [2023-08-25 06:06:27,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 108.85714285714286) internal successors, (2286), 21 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:27,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 293.0) internal successors, (6446), 22 states have internal predecessors, (6446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:27,236 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 293.0) internal successors, (6446), 22 states have internal predecessors, (6446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:27,236 INFO L175 Difference]: Start difference. First operand has 81 places, 59 transitions, 476 flow. Second operand 21 states and 2286 transitions. [2023-08-25 06:06:27,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 128 transitions, 1045 flow [2023-08-25 06:06:27,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 128 transitions, 967 flow, removed 24 selfloop flow, removed 7 redundant places. [2023-08-25 06:06:27,241 INFO L231 Difference]: Finished difference. Result has 93 places, 70 transitions, 634 flow [2023-08-25 06:06:27,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=634, PETRI_PLACES=93, PETRI_TRANSITIONS=70} [2023-08-25 06:06:27,242 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 57 predicate places. [2023-08-25 06:06:27,242 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 70 transitions, 634 flow [2023-08-25 06:06:27,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 105.88235294117646) internal successors, (1800), 17 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:27,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:06:27,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:06:27,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-25 06:06:27,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-25 06:06:27,451 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 06:06:27,451 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:06:27,451 INFO L85 PathProgramCache]: Analyzing trace with hash -80279249, now seen corresponding path program 6 times [2023-08-25 06:06:27,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:06:27,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693072376] [2023-08-25 06:06:27,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:27,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:06:27,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:27,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:27,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:06:27,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693072376] [2023-08-25 06:06:27,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693072376] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:06:27,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864496941] [2023-08-25 06:06:27,597 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 06:06:27,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:27,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:06:27,598 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:06:27,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-25 06:06:27,666 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-25 06:06:27,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:06:27,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-25 06:06:27,668 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:06:27,757 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:27,757 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:06:27,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:27,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864496941] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:06:27,886 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:06:27,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-08-25 06:06:27,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047684392] [2023-08-25 06:06:27,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:06:27,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-25 06:06:27,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:06:27,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-25 06:06:27,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2023-08-25 06:06:27,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 06:06:27,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 70 transitions, 634 flow. Second operand has 17 states, 17 states have (on average 106.0) internal successors, (1802), 17 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:27,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:06:27,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 06:06:27,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:06:28,359 INFO L124 PetriNetUnfolderBase]: 175/362 cut-off events. [2023-08-25 06:06:28,359 INFO L125 PetriNetUnfolderBase]: For 1379/1379 co-relation queries the response was YES. [2023-08-25 06:06:28,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1749 conditions, 362 events. 175/362 cut-off events. For 1379/1379 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1563 event pairs, 20 based on Foata normal form. 4/366 useless extension candidates. Maximal degree in co-relation 1715. Up to 207 conditions per place. [2023-08-25 06:06:28,362 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 53 selfloop transitions, 31 changer transitions 32/116 dead transitions. [2023-08-25 06:06:28,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 116 transitions, 1006 flow [2023-08-25 06:06:28,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-25 06:06:28,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-25 06:06:28,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1962 transitions. [2023-08-25 06:06:28,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3720136518771331 [2023-08-25 06:06:28,365 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1962 transitions. [2023-08-25 06:06:28,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1962 transitions. [2023-08-25 06:06:28,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:06:28,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1962 transitions. [2023-08-25 06:06:28,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 109.0) internal successors, (1962), 18 states have internal predecessors, (1962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:28,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 293.0) internal successors, (5567), 19 states have internal predecessors, (5567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:28,372 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 293.0) internal successors, (5567), 19 states have internal predecessors, (5567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:28,372 INFO L175 Difference]: Start difference. First operand has 93 places, 70 transitions, 634 flow. Second operand 18 states and 1962 transitions. [2023-08-25 06:06:28,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 116 transitions, 1006 flow [2023-08-25 06:06:28,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 116 transitions, 877 flow, removed 32 selfloop flow, removed 13 redundant places. [2023-08-25 06:06:28,379 INFO L231 Difference]: Finished difference. Result has 96 places, 65 transitions, 558 flow [2023-08-25 06:06:28,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=511, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=558, PETRI_PLACES=96, PETRI_TRANSITIONS=65} [2023-08-25 06:06:28,379 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 60 predicate places. [2023-08-25 06:06:28,379 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 65 transitions, 558 flow [2023-08-25 06:06:28,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 106.0) internal successors, (1802), 17 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:28,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:06:28,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:06:28,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-25 06:06:28,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:28,588 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 06:06:28,588 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:06:28,588 INFO L85 PathProgramCache]: Analyzing trace with hash -480762315, now seen corresponding path program 7 times [2023-08-25 06:06:28,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:06:28,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211286341] [2023-08-25 06:06:28,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:28,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:06:28,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:28,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:28,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:06:28,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211286341] [2023-08-25 06:06:28,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211286341] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:06:28,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801099820] [2023-08-25 06:06:28,727 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 06:06:28,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:28,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:06:28,728 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:06:28,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-25 06:06:28,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:28,791 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-25 06:06:28,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:06:28,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:28,874 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:06:28,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:28,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801099820] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:06:28,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:06:28,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-08-25 06:06:28,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40390393] [2023-08-25 06:06:28,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:06:28,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-25 06:06:28,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:06:28,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-25 06:06:28,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2023-08-25 06:06:28,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 06:06:28,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 65 transitions, 558 flow. Second operand has 16 states, 16 states have (on average 106.0625) internal successors, (1697), 16 states have internal predecessors, (1697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:28,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:06:28,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 06:06:28,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:06:29,119 INFO L124 PetriNetUnfolderBase]: 162/331 cut-off events. [2023-08-25 06:06:29,119 INFO L125 PetriNetUnfolderBase]: For 970/970 co-relation queries the response was YES. [2023-08-25 06:06:29,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1533 conditions, 331 events. 162/331 cut-off events. For 970/970 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1359 event pairs, 21 based on Foata normal form. 2/333 useless extension candidates. Maximal degree in co-relation 1500. Up to 282 conditions per place. [2023-08-25 06:06:29,121 INFO L140 encePairwiseOnDemand]: 286/293 looper letters, 59 selfloop transitions, 8 changer transitions 18/85 dead transitions. [2023-08-25 06:06:29,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 85 transitions, 798 flow [2023-08-25 06:06:29,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-25 06:06:29,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-25 06:06:29,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1085 transitions. [2023-08-25 06:06:29,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3703071672354949 [2023-08-25 06:06:29,123 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1085 transitions. [2023-08-25 06:06:29,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1085 transitions. [2023-08-25 06:06:29,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:06:29,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1085 transitions. [2023-08-25 06:06:29,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 108.5) internal successors, (1085), 10 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:29,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 293.0) internal successors, (3223), 11 states have internal predecessors, (3223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:29,128 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 293.0) internal successors, (3223), 11 states have internal predecessors, (3223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:29,128 INFO L175 Difference]: Start difference. First operand has 96 places, 65 transitions, 558 flow. Second operand 10 states and 1085 transitions. [2023-08-25 06:06:29,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 85 transitions, 798 flow [2023-08-25 06:06:29,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 85 transitions, 706 flow, removed 12 selfloop flow, removed 18 redundant places. [2023-08-25 06:06:29,134 INFO L231 Difference]: Finished difference. Result has 81 places, 62 transitions, 471 flow [2023-08-25 06:06:29,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=471, PETRI_PLACES=81, PETRI_TRANSITIONS=62} [2023-08-25 06:06:29,135 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 45 predicate places. [2023-08-25 06:06:29,135 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 62 transitions, 471 flow [2023-08-25 06:06:29,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 106.0625) internal successors, (1697), 16 states have internal predecessors, (1697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:29,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:06:29,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:06:29,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-25 06:06:29,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:29,340 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 06:06:29,340 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:06:29,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1769375773, now seen corresponding path program 8 times [2023-08-25 06:06:29,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:06:29,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430787190] [2023-08-25 06:06:29,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:29,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:06:29,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:29,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:29,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:06:29,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430787190] [2023-08-25 06:06:29,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430787190] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:06:29,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456047743] [2023-08-25 06:06:29,459 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 06:06:29,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:29,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:06:29,465 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:06:29,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-25 06:06:29,548 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 06:06:29,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:06:29,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-25 06:06:29,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:06:29,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:29,643 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:06:29,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:29,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456047743] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:06:29,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:06:29,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-08-25 06:06:29,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553018061] [2023-08-25 06:06:29,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:06:29,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-25 06:06:29,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:06:29,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-25 06:06:29,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2023-08-25 06:06:29,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 06:06:29,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 62 transitions, 471 flow. Second operand has 17 states, 17 states have (on average 105.94117647058823) internal successors, (1801), 17 states have internal predecessors, (1801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:29,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:06:29,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 06:06:29,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:06:29,931 INFO L124 PetriNetUnfolderBase]: 158/323 cut-off events. [2023-08-25 06:06:29,931 INFO L125 PetriNetUnfolderBase]: For 776/776 co-relation queries the response was YES. [2023-08-25 06:06:29,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1393 conditions, 323 events. 158/323 cut-off events. For 776/776 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1291 event pairs, 23 based on Foata normal form. 2/325 useless extension candidates. Maximal degree in co-relation 1364. Up to 262 conditions per place. [2023-08-25 06:06:29,934 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 58 selfloop transitions, 14 changer transitions 20/92 dead transitions. [2023-08-25 06:06:29,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 92 transitions, 801 flow [2023-08-25 06:06:29,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-25 06:06:29,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-25 06:06:29,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1300 transitions. [2023-08-25 06:06:29,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36973833902161546 [2023-08-25 06:06:29,936 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1300 transitions. [2023-08-25 06:06:29,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1300 transitions. [2023-08-25 06:06:29,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:06:29,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1300 transitions. [2023-08-25 06:06:29,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 108.33333333333333) internal successors, (1300), 12 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:29,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 293.0) internal successors, (3809), 13 states have internal predecessors, (3809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:29,941 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 293.0) internal successors, (3809), 13 states have internal predecessors, (3809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:29,941 INFO L175 Difference]: Start difference. First operand has 81 places, 62 transitions, 471 flow. Second operand 12 states and 1300 transitions. [2023-08-25 06:06:29,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 92 transitions, 801 flow [2023-08-25 06:06:29,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 92 transitions, 749 flow, removed 15 selfloop flow, removed 11 redundant places. [2023-08-25 06:06:29,945 INFO L231 Difference]: Finished difference. Result has 79 places, 63 transitions, 499 flow [2023-08-25 06:06:29,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=499, PETRI_PLACES=79, PETRI_TRANSITIONS=63} [2023-08-25 06:06:29,946 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 43 predicate places. [2023-08-25 06:06:29,946 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 63 transitions, 499 flow [2023-08-25 06:06:29,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 105.94117647058823) internal successors, (1801), 17 states have internal predecessors, (1801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:29,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:06:29,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:06:29,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-25 06:06:30,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-25 06:06:30,153 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 06:06:30,154 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:06:30,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1049624039, now seen corresponding path program 9 times [2023-08-25 06:06:30,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:06:30,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641917935] [2023-08-25 06:06:30,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:30,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:06:30,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:30,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:30,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:06:30,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641917935] [2023-08-25 06:06:30,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641917935] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:06:30,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282398442] [2023-08-25 06:06:30,307 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 06:06:30,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:30,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:06:30,324 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:06:30,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-25 06:06:30,415 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-25 06:06:30,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:06:30,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-25 06:06:30,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:06:30,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:30,555 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:06:30,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:30,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282398442] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:06:30,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:06:30,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-08-25 06:06:30,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863219837] [2023-08-25 06:06:30,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:06:30,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-25 06:06:30,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:06:30,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-25 06:06:30,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2023-08-25 06:06:30,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 06:06:30,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 63 transitions, 499 flow. Second operand has 18 states, 18 states have (on average 105.88888888888889) internal successors, (1906), 18 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:30,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:06:30,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 06:06:30,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:06:31,203 INFO L124 PetriNetUnfolderBase]: 141/298 cut-off events. [2023-08-25 06:06:31,203 INFO L125 PetriNetUnfolderBase]: For 702/702 co-relation queries the response was YES. [2023-08-25 06:06:31,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1296 conditions, 298 events. 141/298 cut-off events. For 702/702 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1222 event pairs, 13 based on Foata normal form. 4/302 useless extension candidates. Maximal degree in co-relation 1269. Up to 183 conditions per place. [2023-08-25 06:06:31,205 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 63 selfloop transitions, 20 changer transitions 20/103 dead transitions. [2023-08-25 06:06:31,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 103 transitions, 856 flow [2023-08-25 06:06:31,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-25 06:06:31,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-25 06:06:31,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1736 transitions. [2023-08-25 06:06:31,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3703071672354949 [2023-08-25 06:06:31,207 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1736 transitions. [2023-08-25 06:06:31,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1736 transitions. [2023-08-25 06:06:31,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:06:31,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1736 transitions. [2023-08-25 06:06:31,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 108.5) internal successors, (1736), 16 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:31,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 293.0) internal successors, (4981), 17 states have internal predecessors, (4981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:31,213 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 293.0) internal successors, (4981), 17 states have internal predecessors, (4981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:31,213 INFO L175 Difference]: Start difference. First operand has 79 places, 63 transitions, 499 flow. Second operand 16 states and 1736 transitions. [2023-08-25 06:06:31,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 103 transitions, 856 flow [2023-08-25 06:06:31,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 103 transitions, 830 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-08-25 06:06:31,217 INFO L231 Difference]: Finished difference. Result has 88 places, 65 transitions, 569 flow [2023-08-25 06:06:31,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=569, PETRI_PLACES=88, PETRI_TRANSITIONS=65} [2023-08-25 06:06:31,217 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 52 predicate places. [2023-08-25 06:06:31,218 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 65 transitions, 569 flow [2023-08-25 06:06:31,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 105.88888888888889) internal successors, (1906), 18 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:31,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:06:31,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:06:31,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-25 06:06:31,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-25 06:06:31,423 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 06:06:31,423 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:06:31,424 INFO L85 PathProgramCache]: Analyzing trace with hash -911095889, now seen corresponding path program 10 times [2023-08-25 06:06:31,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:06:31,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397731465] [2023-08-25 06:06:31,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:31,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:06:31,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:31,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:31,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:06:31,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397731465] [2023-08-25 06:06:31,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397731465] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:06:31,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255886656] [2023-08-25 06:06:31,593 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 06:06:31,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:31,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:06:31,594 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:06:31,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-25 06:06:31,670 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 06:06:31,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:06:31,672 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-25 06:06:31,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:06:31,789 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:31,789 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:06:31,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:06:31,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255886656] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:06:31,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:06:31,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-08-25 06:06:31,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980608432] [2023-08-25 06:06:31,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:06:31,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-25 06:06:31,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:06:31,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-25 06:06:31,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2023-08-25 06:06:31,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 06:06:31,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 65 transitions, 569 flow. Second operand has 18 states, 18 states have (on average 105.83333333333333) internal successors, (1905), 18 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:31,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:06:31,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 06:06:31,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:06:32,295 INFO L124 PetriNetUnfolderBase]: 125/251 cut-off events. [2023-08-25 06:06:32,295 INFO L125 PetriNetUnfolderBase]: For 924/924 co-relation queries the response was YES. [2023-08-25 06:06:32,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1228 conditions, 251 events. 125/251 cut-off events. For 924/924 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 901 event pairs, 13 based on Foata normal form. 3/254 useless extension candidates. Maximal degree in co-relation 1197. Up to 183 conditions per place. [2023-08-25 06:06:32,297 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 57 selfloop transitions, 15 changer transitions 22/94 dead transitions. [2023-08-25 06:06:32,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 94 transitions, 848 flow [2023-08-25 06:06:32,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-25 06:06:32,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-25 06:06:32,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1626 transitions. [2023-08-25 06:06:32,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3699658703071672 [2023-08-25 06:06:32,301 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1626 transitions. [2023-08-25 06:06:32,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1626 transitions. [2023-08-25 06:06:32,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:06:32,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1626 transitions. [2023-08-25 06:06:32,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 108.4) internal successors, (1626), 15 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:32,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 293.0) internal successors, (4688), 16 states have internal predecessors, (4688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:32,308 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 293.0) internal successors, (4688), 16 states have internal predecessors, (4688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:32,308 INFO L175 Difference]: Start difference. First operand has 88 places, 65 transitions, 569 flow. Second operand 15 states and 1626 transitions. [2023-08-25 06:06:32,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 94 transitions, 848 flow [2023-08-25 06:06:32,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 94 transitions, 762 flow, removed 24 selfloop flow, removed 8 redundant places. [2023-08-25 06:06:32,314 INFO L231 Difference]: Finished difference. Result has 87 places, 59 transitions, 478 flow [2023-08-25 06:06:32,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=478, PETRI_PLACES=87, PETRI_TRANSITIONS=59} [2023-08-25 06:06:32,315 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 51 predicate places. [2023-08-25 06:06:32,315 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 59 transitions, 478 flow [2023-08-25 06:06:32,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 105.83333333333333) internal successors, (1905), 18 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:32,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:06:32,316 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:06:32,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-25 06:06:32,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-25 06:06:32,522 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 06:06:32,522 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:06:32,522 INFO L85 PathProgramCache]: Analyzing trace with hash 683363501, now seen corresponding path program 1 times [2023-08-25 06:06:32,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:06:32,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870641136] [2023-08-25 06:06:32,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:32,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:06:32,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:32,663 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 06:06:32,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:06:32,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870641136] [2023-08-25 06:06:32,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870641136] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:06:32,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274053579] [2023-08-25 06:06:32,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:32,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:32,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:06:32,664 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:06:32,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-25 06:06:32,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:32,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 06:06:32,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:06:32,867 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 06:06:32,867 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:06:32,975 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 06:06:32,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274053579] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:06:32,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:06:32,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2023-08-25 06:06:32,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977232809] [2023-08-25 06:06:32,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:06:32,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-25 06:06:32,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:06:32,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-25 06:06:32,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2023-08-25 06:06:32,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 06:06:32,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 59 transitions, 478 flow. Second operand has 19 states, 19 states have (on average 105.94736842105263) internal successors, (2013), 19 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:32,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:06:32,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 06:06:32,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:06:33,346 INFO L124 PetriNetUnfolderBase]: 172/334 cut-off events. [2023-08-25 06:06:33,347 INFO L125 PetriNetUnfolderBase]: For 1055/1055 co-relation queries the response was YES. [2023-08-25 06:06:33,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1543 conditions, 334 events. 172/334 cut-off events. For 1055/1055 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1306 event pairs, 15 based on Foata normal form. 7/341 useless extension candidates. Maximal degree in co-relation 1514. Up to 115 conditions per place. [2023-08-25 06:06:33,349 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 45 selfloop transitions, 43 changer transitions 42/130 dead transitions. [2023-08-25 06:06:33,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 130 transitions, 1055 flow [2023-08-25 06:06:33,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-25 06:06:33,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-25 06:06:33,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1863 transitions. [2023-08-25 06:06:33,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37402128086729575 [2023-08-25 06:06:33,351 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1863 transitions. [2023-08-25 06:06:33,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1863 transitions. [2023-08-25 06:06:33,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:06:33,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1863 transitions. [2023-08-25 06:06:33,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 109.58823529411765) internal successors, (1863), 17 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:33,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 293.0) internal successors, (5274), 18 states have internal predecessors, (5274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:33,356 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 293.0) internal successors, (5274), 18 states have internal predecessors, (5274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:33,356 INFO L175 Difference]: Start difference. First operand has 87 places, 59 transitions, 478 flow. Second operand 17 states and 1863 transitions. [2023-08-25 06:06:33,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 130 transitions, 1055 flow [2023-08-25 06:06:33,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 130 transitions, 957 flow, removed 20 selfloop flow, removed 13 redundant places. [2023-08-25 06:06:33,361 INFO L231 Difference]: Finished difference. Result has 89 places, 67 transitions, 597 flow [2023-08-25 06:06:33,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=597, PETRI_PLACES=89, PETRI_TRANSITIONS=67} [2023-08-25 06:06:33,361 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 53 predicate places. [2023-08-25 06:06:33,361 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 67 transitions, 597 flow [2023-08-25 06:06:33,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 105.94736842105263) internal successors, (2013), 19 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:33,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:06:33,362 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:06:33,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-25 06:06:33,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-25 06:06:33,567 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 06:06:33,568 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:06:33,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1119144287, now seen corresponding path program 2 times [2023-08-25 06:06:33,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:06:33,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797305019] [2023-08-25 06:06:33,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:33,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:06:33,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:33,702 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 06:06:33,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:06:33,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797305019] [2023-08-25 06:06:33,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797305019] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:06:33,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621294671] [2023-08-25 06:06:33,702 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 06:06:33,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:33,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:06:33,703 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:06:33,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-25 06:06:33,783 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 06:06:33,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:06:33,784 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 06:06:33,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:06:33,911 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 06:06:33,911 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:06:34,024 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 06:06:34,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621294671] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:06:34,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:06:34,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-08-25 06:06:34,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542462078] [2023-08-25 06:06:34,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:06:34,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-25 06:06:34,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:06:34,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-25 06:06:34,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2023-08-25 06:06:34,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 06:06:34,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 67 transitions, 597 flow. Second operand has 20 states, 20 states have (on average 105.65) internal successors, (2113), 20 states have internal predecessors, (2113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:34,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:06:34,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 06:06:34,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:06:34,738 INFO L124 PetriNetUnfolderBase]: 195/377 cut-off events. [2023-08-25 06:06:34,738 INFO L125 PetriNetUnfolderBase]: For 2094/2094 co-relation queries the response was YES. [2023-08-25 06:06:34,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1977 conditions, 377 events. 195/377 cut-off events. For 2094/2094 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1498 event pairs, 5 based on Foata normal form. 9/386 useless extension candidates. Maximal degree in co-relation 1945. Up to 113 conditions per place. [2023-08-25 06:06:34,742 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 72 selfloop transitions, 71 changer transitions 16/159 dead transitions. [2023-08-25 06:06:34,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 159 transitions, 1454 flow [2023-08-25 06:06:34,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-25 06:06:34,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-25 06:06:34,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3045 transitions. [2023-08-25 06:06:34,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371160409556314 [2023-08-25 06:06:34,746 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3045 transitions. [2023-08-25 06:06:34,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3045 transitions. [2023-08-25 06:06:34,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:06:34,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3045 transitions. [2023-08-25 06:06:34,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 108.75) internal successors, (3045), 28 states have internal predecessors, (3045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:34,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 293.0) internal successors, (8497), 29 states have internal predecessors, (8497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:34,754 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 293.0) internal successors, (8497), 29 states have internal predecessors, (8497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:34,754 INFO L175 Difference]: Start difference. First operand has 89 places, 67 transitions, 597 flow. Second operand 28 states and 3045 transitions. [2023-08-25 06:06:34,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 159 transitions, 1454 flow [2023-08-25 06:06:34,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 159 transitions, 1284 flow, removed 38 selfloop flow, removed 13 redundant places. [2023-08-25 06:06:34,761 INFO L231 Difference]: Finished difference. Result has 98 places, 93 transitions, 923 flow [2023-08-25 06:06:34,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=923, PETRI_PLACES=98, PETRI_TRANSITIONS=93} [2023-08-25 06:06:34,761 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 62 predicate places. [2023-08-25 06:06:34,761 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 93 transitions, 923 flow [2023-08-25 06:06:34,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 105.65) internal successors, (2113), 20 states have internal predecessors, (2113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:34,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:06:34,762 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:06:34,769 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 06:06:34,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:34,967 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 06:06:34,968 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:06:34,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1537597873, now seen corresponding path program 3 times [2023-08-25 06:06:34,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:06:34,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959148287] [2023-08-25 06:06:34,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:34,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:06:34,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:35,119 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 06:06:35,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:06:35,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959148287] [2023-08-25 06:06:35,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959148287] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:06:35,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603329586] [2023-08-25 06:06:35,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 06:06:35,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:35,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:06:35,121 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:06:35,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-25 06:06:35,204 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-25 06:06:35,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:06:35,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 06:06:35,206 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:06:35,324 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 06:06:35,324 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:06:35,406 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 06:06:35,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603329586] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:06:35,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:06:35,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-08-25 06:06:35,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616361246] [2023-08-25 06:06:35,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:06:35,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-25 06:06:35,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:06:35,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-25 06:06:35,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2023-08-25 06:06:35,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 06:06:35,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 93 transitions, 923 flow. Second operand has 20 states, 20 states have (on average 105.75) internal successors, (2115), 20 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:35,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:06:35,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 06:06:35,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:06:35,808 INFO L124 PetriNetUnfolderBase]: 198/382 cut-off events. [2023-08-25 06:06:35,808 INFO L125 PetriNetUnfolderBase]: For 1543/1543 co-relation queries the response was YES. [2023-08-25 06:06:35,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2005 conditions, 382 events. 198/382 cut-off events. For 1543/1543 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1536 event pairs, 6 based on Foata normal form. 7/389 useless extension candidates. Maximal degree in co-relation 1976. Up to 143 conditions per place. [2023-08-25 06:06:35,810 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 56 selfloop transitions, 56 changer transitions 41/153 dead transitions. [2023-08-25 06:06:35,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 153 transitions, 1460 flow [2023-08-25 06:06:35,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-25 06:06:35,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-25 06:06:35,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2397 transitions. [2023-08-25 06:06:35,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37185851690971145 [2023-08-25 06:06:35,813 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2397 transitions. [2023-08-25 06:06:35,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2397 transitions. [2023-08-25 06:06:35,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:06:35,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2397 transitions. [2023-08-25 06:06:35,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 108.95454545454545) internal successors, (2397), 22 states have internal predecessors, (2397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:35,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 293.0) internal successors, (6739), 23 states have internal predecessors, (6739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:35,819 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 293.0) internal successors, (6739), 23 states have internal predecessors, (6739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:35,819 INFO L175 Difference]: Start difference. First operand has 98 places, 93 transitions, 923 flow. Second operand 22 states and 2397 transitions. [2023-08-25 06:06:35,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 153 transitions, 1460 flow [2023-08-25 06:06:35,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 153 transitions, 1112 flow, removed 122 selfloop flow, removed 14 redundant places. [2023-08-25 06:06:35,827 INFO L231 Difference]: Finished difference. Result has 104 places, 85 transitions, 669 flow [2023-08-25 06:06:35,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=617, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=669, PETRI_PLACES=104, PETRI_TRANSITIONS=85} [2023-08-25 06:06:35,827 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 68 predicate places. [2023-08-25 06:06:35,827 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 85 transitions, 669 flow [2023-08-25 06:06:35,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 105.75) internal successors, (2115), 20 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:35,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:06:35,828 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:06:35,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-25 06:06:36,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2023-08-25 06:06:36,028 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 06:06:36,028 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:06:36,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1257989567, now seen corresponding path program 4 times [2023-08-25 06:06:36,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:06:36,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603072770] [2023-08-25 06:06:36,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:36,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:06:36,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:36,158 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 06:06:36,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:06:36,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603072770] [2023-08-25 06:06:36,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603072770] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:06:36,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073838092] [2023-08-25 06:06:36,159 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 06:06:36,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:36,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:06:36,160 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:06:36,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-25 06:06:36,250 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 06:06:36,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:06:36,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 06:06:36,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:06:36,369 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 06:06:36,369 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:06:36,455 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 06:06:36,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073838092] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:06:36,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:06:36,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-08-25 06:06:36,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896873167] [2023-08-25 06:06:36,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:06:36,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-25 06:06:36,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:06:36,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-25 06:06:36,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2023-08-25 06:06:36,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 06:06:36,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 85 transitions, 669 flow. Second operand has 20 states, 20 states have (on average 105.75) internal successors, (2115), 20 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:36,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:06:36,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 06:06:36,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:06:36,998 INFO L124 PetriNetUnfolderBase]: 162/310 cut-off events. [2023-08-25 06:06:36,998 INFO L125 PetriNetUnfolderBase]: For 607/607 co-relation queries the response was YES. [2023-08-25 06:06:36,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1367 conditions, 310 events. 162/310 cut-off events. For 607/607 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1136 event pairs, 9 based on Foata normal form. 3/313 useless extension candidates. Maximal degree in co-relation 1342. Up to 113 conditions per place. [2023-08-25 06:06:37,000 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 52 selfloop transitions, 56 changer transitions 28/136 dead transitions. [2023-08-25 06:06:37,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 136 transitions, 1079 flow [2023-08-25 06:06:37,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-25 06:06:37,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-25 06:06:37,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2817 transitions. [2023-08-25 06:06:37,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36978209503806775 [2023-08-25 06:06:37,003 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2817 transitions. [2023-08-25 06:06:37,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2817 transitions. [2023-08-25 06:06:37,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:06:37,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2817 transitions. [2023-08-25 06:06:37,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 108.34615384615384) internal successors, (2817), 26 states have internal predecessors, (2817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:37,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 293.0) internal successors, (7911), 27 states have internal predecessors, (7911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:37,010 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 293.0) internal successors, (7911), 27 states have internal predecessors, (7911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:37,010 INFO L175 Difference]: Start difference. First operand has 104 places, 85 transitions, 669 flow. Second operand 26 states and 2817 transitions. [2023-08-25 06:06:37,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 136 transitions, 1079 flow [2023-08-25 06:06:37,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 136 transitions, 954 flow, removed 8 selfloop flow, removed 17 redundant places. [2023-08-25 06:06:37,015 INFO L231 Difference]: Finished difference. Result has 100 places, 77 transitions, 605 flow [2023-08-25 06:06:37,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=541, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=605, PETRI_PLACES=100, PETRI_TRANSITIONS=77} [2023-08-25 06:06:37,015 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 64 predicate places. [2023-08-25 06:06:37,016 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 77 transitions, 605 flow [2023-08-25 06:06:37,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 105.75) internal successors, (2115), 20 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:37,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:06:37,016 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:06:37,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-25 06:06:37,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:37,222 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 06:06:37,222 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:06:37,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1847742941, now seen corresponding path program 5 times [2023-08-25 06:06:37,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:06:37,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469298527] [2023-08-25 06:06:37,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:37,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:06:37,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:37,362 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 06:06:37,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:06:37,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469298527] [2023-08-25 06:06:37,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469298527] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:06:37,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410830445] [2023-08-25 06:06:37,363 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 06:06:37,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:37,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:06:37,364 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:06:37,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-25 06:06:37,446 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-25 06:06:37,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:06:37,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 06:06:37,448 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:06:37,579 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 06:06:37,579 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:06:37,666 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 06:06:37,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410830445] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:06:37,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:06:37,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2023-08-25 06:06:37,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916016623] [2023-08-25 06:06:37,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:06:37,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-25 06:06:37,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:06:37,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-25 06:06:37,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2023-08-25 06:06:37,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 06:06:37,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 77 transitions, 605 flow. Second operand has 19 states, 19 states have (on average 105.73684210526316) internal successors, (2009), 19 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:37,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:06:37,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 06:06:37,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:06:37,960 INFO L124 PetriNetUnfolderBase]: 166/319 cut-off events. [2023-08-25 06:06:37,960 INFO L125 PetriNetUnfolderBase]: For 491/491 co-relation queries the response was YES. [2023-08-25 06:06:37,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1369 conditions, 319 events. 166/319 cut-off events. For 491/491 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1180 event pairs, 9 based on Foata normal form. 4/323 useless extension candidates. Maximal degree in co-relation 1348. Up to 99 conditions per place. [2023-08-25 06:06:37,963 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 52 selfloop transitions, 38 changer transitions 33/123 dead transitions. [2023-08-25 06:06:37,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 123 transitions, 1048 flow [2023-08-25 06:06:37,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-25 06:06:37,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-25 06:06:37,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1842 transitions. [2023-08-25 06:06:37,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3698052599879542 [2023-08-25 06:06:37,965 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1842 transitions. [2023-08-25 06:06:37,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1842 transitions. [2023-08-25 06:06:37,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:06:37,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1842 transitions. [2023-08-25 06:06:37,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 108.3529411764706) internal successors, (1842), 17 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:37,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 293.0) internal successors, (5274), 18 states have internal predecessors, (5274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:37,970 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 293.0) internal successors, (5274), 18 states have internal predecessors, (5274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:37,970 INFO L175 Difference]: Start difference. First operand has 100 places, 77 transitions, 605 flow. Second operand 17 states and 1842 transitions. [2023-08-25 06:06:37,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 123 transitions, 1048 flow [2023-08-25 06:06:37,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 123 transitions, 906 flow, removed 5 selfloop flow, removed 23 redundant places. [2023-08-25 06:06:37,974 INFO L231 Difference]: Finished difference. Result has 91 places, 69 transitions, 560 flow [2023-08-25 06:06:37,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=560, PETRI_PLACES=91, PETRI_TRANSITIONS=69} [2023-08-25 06:06:37,974 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 55 predicate places. [2023-08-25 06:06:37,974 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 69 transitions, 560 flow [2023-08-25 06:06:37,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 105.73684210526316) internal successors, (2009), 19 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:37,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:06:37,975 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:06:37,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-25 06:06:38,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:38,175 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 06:06:38,176 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:06:38,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1017168687, now seen corresponding path program 6 times [2023-08-25 06:06:38,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:06:38,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306966889] [2023-08-25 06:06:38,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:38,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:06:38,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:38,334 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 06:06:38,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:06:38,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306966889] [2023-08-25 06:06:38,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306966889] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:06:38,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817324125] [2023-08-25 06:06:38,334 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 06:06:38,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:38,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:06:38,335 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:06:38,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-25 06:06:38,430 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-25 06:06:38,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:06:38,431 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 06:06:38,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:06:38,562 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 06:06:38,563 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:06:38,665 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 06:06:38,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817324125] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:06:38,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:06:38,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-08-25 06:06:38,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586634280] [2023-08-25 06:06:38,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:06:38,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-25 06:06:38,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:06:38,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-25 06:06:38,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2023-08-25 06:06:38,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 06:06:38,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 69 transitions, 560 flow. Second operand has 20 states, 20 states have (on average 105.65) internal successors, (2113), 20 states have internal predecessors, (2113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:38,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:06:38,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 06:06:38,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:06:39,202 INFO L124 PetriNetUnfolderBase]: 183/371 cut-off events. [2023-08-25 06:06:39,203 INFO L125 PetriNetUnfolderBase]: For 959/959 co-relation queries the response was YES. [2023-08-25 06:06:39,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1636 conditions, 371 events. 183/371 cut-off events. For 959/959 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1528 event pairs, 9 based on Foata normal form. 15/384 useless extension candidates. Maximal degree in co-relation 1612. Up to 113 conditions per place. [2023-08-25 06:06:39,206 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 69 selfloop transitions, 62 changer transitions 16/147 dead transitions. [2023-08-25 06:06:39,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 147 transitions, 1253 flow [2023-08-25 06:06:39,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-25 06:06:39,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-25 06:06:39,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2712 transitions. [2023-08-25 06:06:39,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3702389078498293 [2023-08-25 06:06:39,210 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2712 transitions. [2023-08-25 06:06:39,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2712 transitions. [2023-08-25 06:06:39,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:06:39,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2712 transitions. [2023-08-25 06:06:39,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 108.48) internal successors, (2712), 25 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:39,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 293.0) internal successors, (7618), 26 states have internal predecessors, (7618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:39,219 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 293.0) internal successors, (7618), 26 states have internal predecessors, (7618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:39,219 INFO L175 Difference]: Start difference. First operand has 91 places, 69 transitions, 560 flow. Second operand 25 states and 2712 transitions. [2023-08-25 06:06:39,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 147 transitions, 1253 flow [2023-08-25 06:06:39,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 147 transitions, 1108 flow, removed 36 selfloop flow, removed 13 redundant places. [2023-08-25 06:06:39,227 INFO L231 Difference]: Finished difference. Result has 100 places, 89 transitions, 822 flow [2023-08-25 06:06:39,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=822, PETRI_PLACES=100, PETRI_TRANSITIONS=89} [2023-08-25 06:06:39,228 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 64 predicate places. [2023-08-25 06:06:39,228 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 89 transitions, 822 flow [2023-08-25 06:06:39,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 105.65) internal successors, (2113), 20 states have internal predecessors, (2113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:39,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:06:39,228 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:06:39,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-25 06:06:39,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-08-25 06:06:39,435 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 06:06:39,435 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:06:39,435 INFO L85 PathProgramCache]: Analyzing trace with hash -989463057, now seen corresponding path program 7 times [2023-08-25 06:06:39,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:06:39,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006306046] [2023-08-25 06:06:39,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:39,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:06:39,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:39,562 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 06:06:39,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:06:39,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006306046] [2023-08-25 06:06:39,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006306046] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:06:39,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864798501] [2023-08-25 06:06:39,562 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 06:06:39,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:39,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:06:39,563 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:06:39,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-25 06:06:39,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:39,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 06:06:39,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:06:39,772 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 06:06:39,772 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:06:39,894 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 06:06:39,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864798501] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:06:39,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:06:39,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-08-25 06:06:39,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308145475] [2023-08-25 06:06:39,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:06:39,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-25 06:06:39,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:06:39,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-25 06:06:39,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2023-08-25 06:06:39,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 06:06:39,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 89 transitions, 822 flow. Second operand has 20 states, 20 states have (on average 105.65) internal successors, (2113), 20 states have internal predecessors, (2113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:39,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:06:39,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 06:06:39,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:06:40,406 INFO L124 PetriNetUnfolderBase]: 167/337 cut-off events. [2023-08-25 06:06:40,406 INFO L125 PetriNetUnfolderBase]: For 1432/1432 co-relation queries the response was YES. [2023-08-25 06:06:40,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1707 conditions, 337 events. 167/337 cut-off events. For 1432/1432 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1327 event pairs, 5 based on Foata normal form. 5/342 useless extension candidates. Maximal degree in co-relation 1678. Up to 107 conditions per place. [2023-08-25 06:06:40,408 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 54 selfloop transitions, 54 changer transitions 23/131 dead transitions. [2023-08-25 06:06:40,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 131 transitions, 1246 flow [2023-08-25 06:06:40,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-25 06:06:40,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-25 06:06:40,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2380 transitions. [2023-08-25 06:06:40,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3692212224635433 [2023-08-25 06:06:40,412 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2380 transitions. [2023-08-25 06:06:40,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2380 transitions. [2023-08-25 06:06:40,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:06:40,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2380 transitions. [2023-08-25 06:06:40,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 108.18181818181819) internal successors, (2380), 22 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:40,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 293.0) internal successors, (6739), 23 states have internal predecessors, (6739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:40,420 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 293.0) internal successors, (6739), 23 states have internal predecessors, (6739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:40,420 INFO L175 Difference]: Start difference. First operand has 100 places, 89 transitions, 822 flow. Second operand 22 states and 2380 transitions. [2023-08-25 06:06:40,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 131 transitions, 1246 flow [2023-08-25 06:06:40,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 131 transitions, 1066 flow, removed 51 selfloop flow, removed 13 redundant places. [2023-08-25 06:06:40,430 INFO L231 Difference]: Finished difference. Result has 103 places, 81 transitions, 700 flow [2023-08-25 06:06:40,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=700, PETRI_PLACES=103, PETRI_TRANSITIONS=81} [2023-08-25 06:06:40,430 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 67 predicate places. [2023-08-25 06:06:40,430 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 81 transitions, 700 flow [2023-08-25 06:06:40,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 105.65) internal successors, (2113), 20 states have internal predecessors, (2113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:40,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:06:40,431 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:06:40,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-25 06:06:40,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:40,638 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 06:06:40,638 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:06:40,638 INFO L85 PathProgramCache]: Analyzing trace with hash -339020575, now seen corresponding path program 8 times [2023-08-25 06:06:40,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:06:40,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787158928] [2023-08-25 06:06:40,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:40,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:06:40,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:40,781 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 06:06:40,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:06:40,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787158928] [2023-08-25 06:06:40,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787158928] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:06:40,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391391353] [2023-08-25 06:06:40,781 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 06:06:40,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:40,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:06:40,785 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:06:40,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-25 06:06:40,888 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 06:06:40,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:06:40,889 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 06:06:40,890 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:06:41,006 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 06:06:41,007 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:06:41,118 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 06:06:41,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391391353] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:06:41,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:06:41,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-08-25 06:06:41,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614447109] [2023-08-25 06:06:41,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:06:41,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-25 06:06:41,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:06:41,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-25 06:06:41,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2023-08-25 06:06:41,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 06:06:41,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 81 transitions, 700 flow. Second operand has 20 states, 20 states have (on average 105.6) internal successors, (2112), 20 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:41,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:06:41,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 06:06:41,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:06:41,711 INFO L124 PetriNetUnfolderBase]: 200/402 cut-off events. [2023-08-25 06:06:41,711 INFO L125 PetriNetUnfolderBase]: For 1966/1966 co-relation queries the response was YES. [2023-08-25 06:06:41,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1997 conditions, 402 events. 200/402 cut-off events. For 1966/1966 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1695 event pairs, 1 based on Foata normal form. 9/411 useless extension candidates. Maximal degree in co-relation 1970. Up to 111 conditions per place. [2023-08-25 06:06:41,714 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 84 selfloop transitions, 64 changer transitions 19/167 dead transitions. [2023-08-25 06:06:41,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 167 transitions, 1507 flow [2023-08-25 06:06:41,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-25 06:06:41,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-08-25 06:06:41,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3135 transitions. [2023-08-25 06:06:41,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3689537483817818 [2023-08-25 06:06:41,717 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3135 transitions. [2023-08-25 06:06:41,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3135 transitions. [2023-08-25 06:06:41,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:06:41,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3135 transitions. [2023-08-25 06:06:41,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 108.10344827586206) internal successors, (3135), 29 states have internal predecessors, (3135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:41,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 293.0) internal successors, (8790), 30 states have internal predecessors, (8790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:41,724 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 293.0) internal successors, (8790), 30 states have internal predecessors, (8790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:41,724 INFO L175 Difference]: Start difference. First operand has 103 places, 81 transitions, 700 flow. Second operand 29 states and 3135 transitions. [2023-08-25 06:06:41,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 167 transitions, 1507 flow [2023-08-25 06:06:41,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 167 transitions, 1343 flow, removed 14 selfloop flow, removed 16 redundant places. [2023-08-25 06:06:41,731 INFO L231 Difference]: Finished difference. Result has 113 places, 99 transitions, 944 flow [2023-08-25 06:06:41,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=944, PETRI_PLACES=113, PETRI_TRANSITIONS=99} [2023-08-25 06:06:41,731 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 77 predicate places. [2023-08-25 06:06:41,731 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 99 transitions, 944 flow [2023-08-25 06:06:41,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 105.6) internal successors, (2112), 20 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:41,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:06:41,732 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:06:41,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-25 06:06:41,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:41,937 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 06:06:41,938 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:06:41,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1977245711, now seen corresponding path program 9 times [2023-08-25 06:06:41,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:06:41,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132390502] [2023-08-25 06:06:41,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:41,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:06:41,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:42,045 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 06:06:42,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:06:42,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132390502] [2023-08-25 06:06:42,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132390502] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:06:42,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785324844] [2023-08-25 06:06:42,046 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 06:06:42,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:42,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:06:42,047 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:06:42,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-25 06:06:42,159 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-25 06:06:42,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:06:42,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 06:06:42,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:06:42,260 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 06:06:42,261 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:06:42,366 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 06:06:42,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785324844] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:06:42,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:06:42,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-08-25 06:06:42,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33073620] [2023-08-25 06:06:42,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:06:42,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-25 06:06:42,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:06:42,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-25 06:06:42,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2023-08-25 06:06:42,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 06:06:42,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 99 transitions, 944 flow. Second operand has 20 states, 20 states have (on average 105.7) internal successors, (2114), 20 states have internal predecessors, (2114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:42,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:06:42,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 06:06:42,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:06:42,800 INFO L124 PetriNetUnfolderBase]: 202/399 cut-off events. [2023-08-25 06:06:42,800 INFO L125 PetriNetUnfolderBase]: For 2997/2997 co-relation queries the response was YES. [2023-08-25 06:06:42,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2202 conditions, 399 events. 202/399 cut-off events. For 2997/2997 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1658 event pairs, 5 based on Foata normal form. 8/407 useless extension candidates. Maximal degree in co-relation 2169. Up to 115 conditions per place. [2023-08-25 06:06:42,802 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 39 selfloop transitions, 20 changer transitions 94/153 dead transitions. [2023-08-25 06:06:42,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 153 transitions, 1521 flow [2023-08-25 06:06:42,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-25 06:06:42,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-25 06:06:42,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2384 transitions. [2023-08-25 06:06:42,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3698417623332299 [2023-08-25 06:06:42,804 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2384 transitions. [2023-08-25 06:06:42,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2384 transitions. [2023-08-25 06:06:42,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:06:42,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2384 transitions. [2023-08-25 06:06:42,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 108.36363636363636) internal successors, (2384), 22 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:42,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 293.0) internal successors, (6739), 23 states have internal predecessors, (6739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:42,810 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 293.0) internal successors, (6739), 23 states have internal predecessors, (6739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:42,810 INFO L175 Difference]: Start difference. First operand has 113 places, 99 transitions, 944 flow. Second operand 22 states and 2384 transitions. [2023-08-25 06:06:42,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 153 transitions, 1521 flow [2023-08-25 06:06:42,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 153 transitions, 1336 flow, removed 55 selfloop flow, removed 10 redundant places. [2023-08-25 06:06:42,819 INFO L231 Difference]: Finished difference. Result has 120 places, 44 transitions, 369 flow [2023-08-25 06:06:42,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=763, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=369, PETRI_PLACES=120, PETRI_TRANSITIONS=44} [2023-08-25 06:06:42,820 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 84 predicate places. [2023-08-25 06:06:42,820 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 44 transitions, 369 flow [2023-08-25 06:06:42,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 105.7) internal successors, (2114), 20 states have internal predecessors, (2114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:42,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:06:42,820 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:06:42,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-25 06:06:43,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:43,026 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 06:06:43,026 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:06:43,026 INFO L85 PathProgramCache]: Analyzing trace with hash -366726205, now seen corresponding path program 10 times [2023-08-25 06:06:43,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:06:43,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334002264] [2023-08-25 06:06:43,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:43,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:06:43,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:43,145 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 06:06:43,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:06:43,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334002264] [2023-08-25 06:06:43,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334002264] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:06:43,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495792370] [2023-08-25 06:06:43,146 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 06:06:43,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:43,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:06:43,149 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:06:43,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-25 06:06:43,248 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 06:06:43,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:06:43,249 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 06:06:43,250 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:06:43,355 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 06:06:43,355 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:06:43,453 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 06:06:43,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495792370] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:06:43,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:06:43,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-08-25 06:06:43,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281268340] [2023-08-25 06:06:43,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:06:43,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-25 06:06:43,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:06:43,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-25 06:06:43,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2023-08-25 06:06:43,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 06:06:43,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 44 transitions, 369 flow. Second operand has 20 states, 20 states have (on average 105.6) internal successors, (2112), 20 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:43,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:06:43,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 06:06:43,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:06:43,805 INFO L124 PetriNetUnfolderBase]: 69/155 cut-off events. [2023-08-25 06:06:43,806 INFO L125 PetriNetUnfolderBase]: For 1390/1390 co-relation queries the response was YES. [2023-08-25 06:06:43,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 827 conditions, 155 events. 69/155 cut-off events. For 1390/1390 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 484 event pairs, 5 based on Foata normal form. 3/158 useless extension candidates. Maximal degree in co-relation 794. Up to 63 conditions per place. [2023-08-25 06:06:43,807 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 24 selfloop transitions, 8 changer transitions 46/78 dead transitions. [2023-08-25 06:06:43,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 78 transitions, 646 flow [2023-08-25 06:06:43,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-25 06:06:43,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-25 06:06:43,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1942 transitions. [2023-08-25 06:06:43,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36822146378460374 [2023-08-25 06:06:43,809 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1942 transitions. [2023-08-25 06:06:43,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1942 transitions. [2023-08-25 06:06:43,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:06:43,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1942 transitions. [2023-08-25 06:06:43,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 107.88888888888889) internal successors, (1942), 18 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:43,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 293.0) internal successors, (5567), 19 states have internal predecessors, (5567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:43,813 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 293.0) internal successors, (5567), 19 states have internal predecessors, (5567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:43,813 INFO L175 Difference]: Start difference. First operand has 120 places, 44 transitions, 369 flow. Second operand 18 states and 1942 transitions. [2023-08-25 06:06:43,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 78 transitions, 646 flow [2023-08-25 06:06:43,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 78 transitions, 499 flow, removed 32 selfloop flow, removed 29 redundant places. [2023-08-25 06:06:43,816 INFO L231 Difference]: Finished difference. Result has 73 places, 29 transitions, 175 flow [2023-08-25 06:06:43,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=175, PETRI_PLACES=73, PETRI_TRANSITIONS=29} [2023-08-25 06:06:43,817 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 37 predicate places. [2023-08-25 06:06:43,817 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 29 transitions, 175 flow [2023-08-25 06:06:43,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 105.6) internal successors, (2112), 20 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:43,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:06:43,817 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:06:43,823 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 06:06:44,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-08-25 06:06:44,023 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 06:06:44,023 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:06:44,023 INFO L85 PathProgramCache]: Analyzing trace with hash -460432681, now seen corresponding path program 11 times [2023-08-25 06:06:44,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:06:44,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414436988] [2023-08-25 06:06:44,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:44,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:06:44,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:44,157 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 06:06:44,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:06:44,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414436988] [2023-08-25 06:06:44,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414436988] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:06:44,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008957156] [2023-08-25 06:06:44,157 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 06:06:44,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:44,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:06:44,162 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 06:06:44,164 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 06:06:44,254 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 06:06:44,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:06:44,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 06:06:44,256 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:06:44,386 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 06:06:44,386 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:06:44,505 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 06:06:44,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008957156] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:06:44,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:06:44,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-08-25 06:06:44,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031789369] [2023-08-25 06:06:44,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:06:44,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-25 06:06:44,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:06:44,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-25 06:06:44,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2023-08-25 06:06:44,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 06:06:44,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 29 transitions, 175 flow. Second operand has 20 states, 20 states have (on average 105.65) internal successors, (2113), 20 states have internal predecessors, (2113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:44,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:06:44,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 06:06:44,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:06:45,093 INFO L124 PetriNetUnfolderBase]: 80/194 cut-off events. [2023-08-25 06:06:45,094 INFO L125 PetriNetUnfolderBase]: For 475/475 co-relation queries the response was YES. [2023-08-25 06:06:45,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 779 conditions, 194 events. 80/194 cut-off events. For 475/475 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 773 event pairs, 0 based on Foata normal form. 13/207 useless extension candidates. Maximal degree in co-relation 759. Up to 71 conditions per place. [2023-08-25 06:06:45,095 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 66 selfloop transitions, 34 changer transitions 19/119 dead transitions. [2023-08-25 06:06:45,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 119 transitions, 788 flow [2023-08-25 06:06:45,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-25 06:06:45,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-25 06:06:45,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2825 transitions. [2023-08-25 06:06:45,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37083223943292204 [2023-08-25 06:06:45,099 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2825 transitions. [2023-08-25 06:06:45,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2825 transitions. [2023-08-25 06:06:45,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:06:45,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2825 transitions. [2023-08-25 06:06:45,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 108.65384615384616) internal successors, (2825), 26 states have internal predecessors, (2825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:45,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 293.0) internal successors, (7911), 27 states have internal predecessors, (7911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:45,109 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 293.0) internal successors, (7911), 27 states have internal predecessors, (7911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:45,109 INFO L175 Difference]: Start difference. First operand has 73 places, 29 transitions, 175 flow. Second operand 26 states and 2825 transitions. [2023-08-25 06:06:45,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 119 transitions, 788 flow [2023-08-25 06:06:45,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 119 transitions, 657 flow, removed 44 selfloop flow, removed 16 redundant places. [2023-08-25 06:06:45,112 INFO L231 Difference]: Finished difference. Result has 61 places, 48 transitions, 322 flow [2023-08-25 06:06:45,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=322, PETRI_PLACES=61, PETRI_TRANSITIONS=48} [2023-08-25 06:06:45,113 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 25 predicate places. [2023-08-25 06:06:45,113 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 48 transitions, 322 flow [2023-08-25 06:06:45,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 105.65) internal successors, (2113), 20 states have internal predecessors, (2113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:45,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:06:45,114 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:06:45,133 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 06:06:45,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-08-25 06:06:45,320 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 06:06:45,321 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:06:45,321 INFO L85 PathProgramCache]: Analyzing trace with hash -176222463, now seen corresponding path program 12 times [2023-08-25 06:06:45,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:06:45,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834267634] [2023-08-25 06:06:45,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:45,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:06:45,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:45,443 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 06:06:45,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:06:45,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834267634] [2023-08-25 06:06:45,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834267634] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:06:45,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486525788] [2023-08-25 06:06:45,444 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 06:06:45,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:45,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:06:45,449 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 06:06:45,451 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 06:06:45,547 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-25 06:06:45,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:06:45,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 06:06:45,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:06:45,661 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 06:06:45,661 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:06:45,767 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 06:06:45,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486525788] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:06:45,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:06:45,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-08-25 06:06:45,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978260635] [2023-08-25 06:06:45,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:06:45,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-25 06:06:45,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:06:45,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-25 06:06:45,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2023-08-25 06:06:45,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 06:06:45,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 48 transitions, 322 flow. Second operand has 20 states, 20 states have (on average 105.6) internal successors, (2112), 20 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:45,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:06:45,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 06:06:45,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:06:46,176 INFO L124 PetriNetUnfolderBase]: 72/172 cut-off events. [2023-08-25 06:06:46,176 INFO L125 PetriNetUnfolderBase]: For 156/156 co-relation queries the response was YES. [2023-08-25 06:06:46,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 660 conditions, 172 events. 72/172 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 615 event pairs, 0 based on Foata normal form. 3/175 useless extension candidates. Maximal degree in co-relation 646. Up to 61 conditions per place. [2023-08-25 06:06:46,177 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 40 selfloop transitions, 33 changer transitions 15/88 dead transitions. [2023-08-25 06:06:46,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 88 transitions, 609 flow [2023-08-25 06:06:46,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-25 06:06:46,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-25 06:06:46,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2371 transitions. [2023-08-25 06:06:46,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36782500775674837 [2023-08-25 06:06:46,180 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2371 transitions. [2023-08-25 06:06:46,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2371 transitions. [2023-08-25 06:06:46,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:06:46,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2371 transitions. [2023-08-25 06:06:46,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 107.77272727272727) internal successors, (2371), 22 states have internal predecessors, (2371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:46,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 293.0) internal successors, (6739), 23 states have internal predecessors, (6739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:46,185 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 293.0) internal successors, (6739), 23 states have internal predecessors, (6739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:46,185 INFO L175 Difference]: Start difference. First operand has 61 places, 48 transitions, 322 flow. Second operand 22 states and 2371 transitions. [2023-08-25 06:06:46,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 88 transitions, 609 flow [2023-08-25 06:06:46,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 88 transitions, 441 flow, removed 66 selfloop flow, removed 13 redundant places. [2023-08-25 06:06:46,187 INFO L231 Difference]: Finished difference. Result has 69 places, 48 transitions, 244 flow [2023-08-25 06:06:46,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=244, PETRI_PLACES=69, PETRI_TRANSITIONS=48} [2023-08-25 06:06:46,188 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 33 predicate places. [2023-08-25 06:06:46,188 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 48 transitions, 244 flow [2023-08-25 06:06:46,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 105.6) internal successors, (2112), 20 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:46,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:06:46,188 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:06:46,205 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 06:06:46,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-25 06:06:46,394 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 06:06:46,394 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:06:46,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1814447599, now seen corresponding path program 13 times [2023-08-25 06:06:46,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:06:46,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308146972] [2023-08-25 06:06:46,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:46,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:06:46,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:46,518 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 06:06:46,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:06:46,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308146972] [2023-08-25 06:06:46,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308146972] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:06:46,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192408544] [2023-08-25 06:06:46,519 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 06:06:46,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:46,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:06:46,520 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 06:06:46,522 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 06:06:46,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:46,612 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 06:06:46,612 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:06:46,720 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 06:06:46,720 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:06:46,850 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 06:06:46,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192408544] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:06:46,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:06:46,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-08-25 06:06:46,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123484636] [2023-08-25 06:06:46,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:06:46,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-25 06:06:46,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:06:46,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-25 06:06:46,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2023-08-25 06:06:46,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 06:06:46,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 48 transitions, 244 flow. Second operand has 20 states, 20 states have (on average 105.7) internal successors, (2114), 20 states have internal predecessors, (2114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:46,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:06:46,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 06:06:46,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:06:47,203 INFO L124 PetriNetUnfolderBase]: 77/177 cut-off events. [2023-08-25 06:06:47,204 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2023-08-25 06:06:47,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 562 conditions, 177 events. 77/177 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 658 event pairs, 1 based on Foata normal form. 9/176 useless extension candidates. Maximal degree in co-relation 548. Up to 30 conditions per place. [2023-08-25 06:06:47,205 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 27 selfloop transitions, 15 changer transitions 46/88 dead transitions. [2023-08-25 06:06:47,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 88 transitions, 517 flow [2023-08-25 06:06:47,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-25 06:06:47,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-25 06:06:47,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2055 transitions. [2023-08-25 06:06:47,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3691395724806898 [2023-08-25 06:06:47,207 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2055 transitions. [2023-08-25 06:06:47,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2055 transitions. [2023-08-25 06:06:47,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:06:47,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2055 transitions. [2023-08-25 06:06:47,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 108.15789473684211) internal successors, (2055), 19 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:47,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 293.0) internal successors, (5860), 20 states have internal predecessors, (5860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:47,212 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 293.0) internal successors, (5860), 20 states have internal predecessors, (5860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:47,212 INFO L175 Difference]: Start difference. First operand has 69 places, 48 transitions, 244 flow. Second operand 19 states and 2055 transitions. [2023-08-25 06:06:47,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 88 transitions, 517 flow [2023-08-25 06:06:47,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 88 transitions, 429 flow, removed 8 selfloop flow, removed 19 redundant places. [2023-08-25 06:06:47,214 INFO L231 Difference]: Finished difference. Result has 62 places, 34 transitions, 137 flow [2023-08-25 06:06:47,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=137, PETRI_PLACES=62, PETRI_TRANSITIONS=34} [2023-08-25 06:06:47,214 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 26 predicate places. [2023-08-25 06:06:47,214 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 34 transitions, 137 flow [2023-08-25 06:06:47,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 105.7) internal successors, (2114), 20 states have internal predecessors, (2114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:47,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:06:47,215 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:06:47,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-08-25 06:06:47,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:47,421 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-25 06:06:47,421 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:06:47,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1690375879, now seen corresponding path program 14 times [2023-08-25 06:06:47,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:06:47,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219624984] [2023-08-25 06:06:47,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:06:47,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:06:47,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:06:47,534 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 06:06:47,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:06:47,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219624984] [2023-08-25 06:06:47,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219624984] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:06:47,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896935253] [2023-08-25 06:06:47,535 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 06:06:47,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:47,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:06:47,536 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 06:06:47,537 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 06:06:47,635 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 06:06:47,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:06:47,636 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 06:06:47,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:06:47,758 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 06:06:47,759 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:06:47,868 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 06:06:47,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896935253] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:06:47,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:06:47,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2023-08-25 06:06:47,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926810581] [2023-08-25 06:06:47,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:06:47,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-25 06:06:47,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:06:47,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-25 06:06:47,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2023-08-25 06:06:47,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 293 [2023-08-25 06:06:47,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 34 transitions, 137 flow. Second operand has 19 states, 19 states have (on average 105.73684210526316) internal successors, (2009), 19 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:47,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:06:47,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 293 [2023-08-25 06:06:47,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:06:48,057 INFO L124 PetriNetUnfolderBase]: 37/82 cut-off events. [2023-08-25 06:06:48,057 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-25 06:06:48,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248 conditions, 82 events. 37/82 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 169 event pairs, 0 based on Foata normal form. 2/74 useless extension candidates. Maximal degree in co-relation 238. Up to 19 conditions per place. [2023-08-25 06:06:48,058 INFO L140 encePairwiseOnDemand]: 285/293 looper letters, 0 selfloop transitions, 0 changer transitions 50/50 dead transitions. [2023-08-25 06:06:48,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 50 transitions, 273 flow [2023-08-25 06:06:48,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-25 06:06:48,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-25 06:06:48,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1603 transitions. [2023-08-25 06:06:48,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3647326507394767 [2023-08-25 06:06:48,060 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1603 transitions. [2023-08-25 06:06:48,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1603 transitions. [2023-08-25 06:06:48,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:06:48,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1603 transitions. [2023-08-25 06:06:48,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 106.86666666666666) internal successors, (1603), 15 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:48,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 293.0) internal successors, (4688), 16 states have internal predecessors, (4688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:48,064 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 293.0) internal successors, (4688), 16 states have internal predecessors, (4688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:48,064 INFO L175 Difference]: Start difference. First operand has 62 places, 34 transitions, 137 flow. Second operand 15 states and 1603 transitions. [2023-08-25 06:06:48,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 50 transitions, 273 flow [2023-08-25 06:06:48,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 50 transitions, 243 flow, removed 0 selfloop flow, removed 9 redundant places. [2023-08-25 06:06:48,065 INFO L231 Difference]: Finished difference. Result has 48 places, 0 transitions, 0 flow [2023-08-25 06:06:48,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=0, PETRI_PLACES=48, PETRI_TRANSITIONS=0} [2023-08-25 06:06:48,065 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 12 predicate places. [2023-08-25 06:06:48,065 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 0 transitions, 0 flow [2023-08-25 06:06:48,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 105.73684210526316) internal successors, (2009), 19 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:06:48,067 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONDATA_RACE (25 of 26 remaining) [2023-08-25 06:06:48,067 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONDATA_RACE (24 of 26 remaining) [2023-08-25 06:06:48,067 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONDATA_RACE (23 of 26 remaining) [2023-08-25 06:06:48,068 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONDATA_RACE (22 of 26 remaining) [2023-08-25 06:06:48,068 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONDATA_RACE (21 of 26 remaining) [2023-08-25 06:06:48,068 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONDATA_RACE (20 of 26 remaining) [2023-08-25 06:06:48,068 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONDATA_RACE (19 of 26 remaining) [2023-08-25 06:06:48,068 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (18 of 26 remaining) [2023-08-25 06:06:48,068 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (17 of 26 remaining) [2023-08-25 06:06:48,068 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (16 of 26 remaining) [2023-08-25 06:06:48,068 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 26 remaining) [2023-08-25 06:06:48,068 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (14 of 26 remaining) [2023-08-25 06:06:48,068 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (13 of 26 remaining) [2023-08-25 06:06:48,068 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (12 of 26 remaining) [2023-08-25 06:06:48,068 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (11 of 26 remaining) [2023-08-25 06:06:48,068 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (10 of 26 remaining) [2023-08-25 06:06:48,070 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONASSERT (9 of 26 remaining) [2023-08-25 06:06:48,070 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 26 remaining) [2023-08-25 06:06:48,070 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 26 remaining) [2023-08-25 06:06:48,070 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONDATA_RACE (6 of 26 remaining) [2023-08-25 06:06:48,070 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONDATA_RACE (5 of 26 remaining) [2023-08-25 06:06:48,070 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONDATA_RACE (4 of 26 remaining) [2023-08-25 06:06:48,070 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONDATA_RACE (3 of 26 remaining) [2023-08-25 06:06:48,070 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONDATA_RACE (2 of 26 remaining) [2023-08-25 06:06:48,070 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONDATA_RACE (1 of 26 remaining) [2023-08-25 06:06:48,071 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONDATA_RACE (0 of 26 remaining) [2023-08-25 06:06:48,076 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-08-25 06:06:48,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:06:48,276 INFO L445 BasicCegarLoop]: Path program histogram: [14, 10, 6, 1] [2023-08-25 06:06:48,280 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-25 06:06:48,280 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-25 06:06:48,282 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 06:06:48 BasicIcfg [2023-08-25 06:06:48,282 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-25 06:06:48,282 INFO L158 Benchmark]: Toolchain (without parser) took 32828.25ms. Allocated memory was 421.5MB in the beginning and 778.0MB in the end (delta: 356.5MB). Free memory was 397.3MB in the beginning and 587.1MB in the end (delta: -189.8MB). Peak memory consumption was 168.5MB. Max. memory is 16.0GB. [2023-08-25 06:06:48,282 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 421.5MB. Free memory is still 397.8MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-25 06:06:48,282 INFO L158 Benchmark]: CACSL2BoogieTranslator took 204.36ms. Allocated memory is still 421.5MB. Free memory was 397.3MB in the beginning and 386.1MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-25 06:06:48,283 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.81ms. Allocated memory is still 421.5MB. Free memory was 386.1MB in the beginning and 384.4MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-25 06:06:48,283 INFO L158 Benchmark]: Boogie Preprocessor took 28.64ms. Allocated memory is still 421.5MB. Free memory was 384.4MB in the beginning and 382.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 06:06:48,283 INFO L158 Benchmark]: RCFGBuilder took 426.00ms. Allocated memory is still 421.5MB. Free memory was 382.5MB in the beginning and 362.0MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-25 06:06:48,283 INFO L158 Benchmark]: TraceAbstraction took 32124.57ms. Allocated memory was 421.5MB in the beginning and 778.0MB in the end (delta: 356.5MB). Free memory was 361.6MB in the beginning and 587.1MB in the end (delta: -225.4MB). Peak memory consumption was 132.8MB. Max. memory is 16.0GB. [2023-08-25 06:06:48,284 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 421.5MB. Free memory is still 397.8MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 204.36ms. Allocated memory is still 421.5MB. Free memory was 397.3MB in the beginning and 386.1MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 38.81ms. Allocated memory is still 421.5MB. Free memory was 386.1MB in the beginning and 384.4MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 28.64ms. Allocated memory is still 421.5MB. Free memory was 384.4MB in the beginning and 382.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 426.00ms. Allocated memory is still 421.5MB. Free memory was 382.5MB in the beginning and 362.0MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 32124.57ms. Allocated memory was 421.5MB in the beginning and 778.0MB in the end (delta: 356.5MB). Free memory was 361.6MB in the beginning and 587.1MB in the end (delta: -225.4MB). Peak memory consumption was 132.8MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.0s, 129 PlacesBefore, 36 PlacesAfterwards, 129 TransitionsBefore, 31 TransitionsAfterwards, 1636 CoEnabledTransitionPairs, 7 FixpointIterations, 82 TrivialSequentialCompositions, 50 ConcurrentSequentialCompositions, 10 TrivialYvCompositions, 6 ConcurrentYvCompositions, 5 ChoiceCompositions, 153 TotalNumberOfCompositions, 1797 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1761, independent: 1757, independent conditional: 0, independent unconditional: 1757, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 927, independent: 923, independent conditional: 0, independent unconditional: 923, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1761, independent: 834, independent conditional: 0, independent unconditional: 834, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 927, unknown conditional: 0, unknown unconditional: 927] , Statistics on independence cache: Total cache size (in pairs): 43, Positive cache size: 43, Positive conditional cache size: 0, Positive unconditional cache size: 43, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 41]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 43]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 43]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 51]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 53]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 54]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 54]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 64]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 65]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 67]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 67]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 72]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 73]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 75]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 75]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 75]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 21]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 167 locations, 26 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: 32.0s, OverallIterations: 31, TraceHistogramMax: 2, PathProgramHistogramMax: 14, EmptinessCheckTime: 0.0s, AutomataDifference: 11.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1588 SdHoareTripleChecker+Valid, 5.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1588 mSDsluCounter, 410 SdHoareTripleChecker+Invalid, 4.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 305 mSDsCounter, 464 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11023 IncrementalHoareTripleChecker+Invalid, 11487 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 464 mSolverCounterUnsat, 105 mSDtfsCounter, 11023 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1111 GetRequests, 412 SyntacticMatches, 41 SemanticMatches, 658 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4798 ImplicationChecksByTransitivity, 7.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=944occurred in iteration=25, InterpolantAutomatonStates: 520, 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: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 9.7s InterpolantComputationTime, 807 NumberOfCodeBlocks, 807 NumberOfCodeBlocksAsserted, 76 NumberOfCheckSat, 1092 ConstructedInterpolants, 0 QuantifiedInterpolants, 12116 SizeOfPredicates, 38 NumberOfNonLiveVariables, 3986 ConjunctsInSsa, 520 ConjunctsInUnsatCore, 79 InterpolantComputations, 7 PerfectInterpolantSequences, 10/198 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 - AllSpecificationsHoldResult: All specifications hold 17 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-25 06:06:48,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...