/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/goblint-regression/06-symbeq_07-tricky_address2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 06:59:14,347 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 06:59:14,426 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 06:59:14,433 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 06:59:14,434 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 06:59:14,469 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 06:59:14,470 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 06:59:14,471 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 06:59:14,472 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 06:59:14,475 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 06:59:14,476 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 06:59:14,476 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 06:59:14,476 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 06:59:14,476 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 06:59:14,476 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 06:59:14,477 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 06:59:14,477 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 06:59:14,477 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 06:59:14,477 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 06:59:14,478 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 06:59:14,478 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 06:59:14,480 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 06:59:14,480 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 06:59:14,480 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 06:59:14,481 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 06:59:14,481 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 06:59:14,481 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 06:59:14,481 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 06:59:14,482 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 06:59:14,482 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 06:59:14,483 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 06:59:14,483 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 06:59:14,483 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 06:59:14,483 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 06:59:14,483 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 06:59:14,484 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-26 06:59:14,788 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 06:59:14,805 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 06:59:14,807 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 06:59:14,808 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 06:59:14,809 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 06:59:14,810 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/06-symbeq_07-tricky_address2.i [2023-08-26 06:59:16,089 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 06:59:16,426 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 06:59:16,426 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/06-symbeq_07-tricky_address2.i [2023-08-26 06:59:16,443 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/895283b49/eb0229252ecc402ba2f20f49da58eff4/FLAGdbd43cb5b [2023-08-26 06:59:16,458 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/895283b49/eb0229252ecc402ba2f20f49da58eff4 [2023-08-26 06:59:16,463 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 06:59:16,465 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 06:59:16,466 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 06:59:16,467 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 06:59:16,469 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 06:59:16,470 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:59:16" (1/1) ... [2023-08-26 06:59:16,471 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29965cd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:59:16, skipping insertion in model container [2023-08-26 06:59:16,471 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:59:16" (1/1) ... [2023-08-26 06:59:16,526 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 06:59:16,964 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 06:59:16,990 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 06:59:17,019 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [249] [2023-08-26 06:59:17,021 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [249] [2023-08-26 06:59:17,027 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [741] [2023-08-26 06:59:17,060 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 06:59:17,125 INFO L206 MainTranslator]: Completed translation [2023-08-26 06:59:17,126 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:59:17 WrapperNode [2023-08-26 06:59:17,126 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 06:59:17,127 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 06:59:17,127 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 06:59:17,128 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 06:59:17,134 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:59:17" (1/1) ... [2023-08-26 06:59:17,162 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:59:17" (1/1) ... [2023-08-26 06:59:17,202 INFO L138 Inliner]: procedures = 264, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 91 [2023-08-26 06:59:17,203 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 06:59:17,204 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 06:59:17,204 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 06:59:17,204 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 06:59:17,211 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:59:17" (1/1) ... [2023-08-26 06:59:17,212 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:59:17" (1/1) ... [2023-08-26 06:59:17,226 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:59:17" (1/1) ... [2023-08-26 06:59:17,227 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:59:17" (1/1) ... [2023-08-26 06:59:17,233 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:59:17" (1/1) ... [2023-08-26 06:59:17,236 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:59:17" (1/1) ... [2023-08-26 06:59:17,249 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:59:17" (1/1) ... [2023-08-26 06:59:17,251 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:59:17" (1/1) ... [2023-08-26 06:59:17,253 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 06:59:17,254 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 06:59:17,254 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 06:59:17,254 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 06:59:17,255 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:59:17" (1/1) ... [2023-08-26 06:59:17,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 06:59:17,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 06:59:17,293 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-26 06:59:17,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-26 06:59:17,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 06:59:17,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 06:59:17,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 06:59:17,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 06:59:17,336 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 06:59:17,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 06:59:17,336 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 06:59:17,337 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 06:59:17,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 06:59:17,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 06:59:17,338 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 06:59:17,441 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 06:59:17,443 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 06:59:17,641 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 06:59:17,647 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 06:59:17,647 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-26 06:59:17,649 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:59:17 BoogieIcfgContainer [2023-08-26 06:59:17,649 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 06:59:17,651 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 06:59:17,651 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 06:59:17,654 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 06:59:17,654 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 06:59:16" (1/3) ... [2023-08-26 06:59:17,655 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39fbf03d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:59:17, skipping insertion in model container [2023-08-26 06:59:17,655 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:59:17" (2/3) ... [2023-08-26 06:59:17,655 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39fbf03d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:59:17, skipping insertion in model container [2023-08-26 06:59:17,655 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:59:17" (3/3) ... [2023-08-26 06:59:17,658 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_07-tricky_address2.i [2023-08-26 06:59:17,673 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 06:59:17,673 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-26 06:59:17,673 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 06:59:17,753 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 06:59:17,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 99 transitions, 203 flow [2023-08-26 06:59:17,843 INFO L124 PetriNetUnfolderBase]: 4/98 cut-off events. [2023-08-26 06:59:17,844 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 06:59:17,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 98 events. 4/98 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 83 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2023-08-26 06:59:17,848 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 99 transitions, 203 flow [2023-08-26 06:59:17,852 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 98 transitions, 199 flow [2023-08-26 06:59:17,855 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 06:59:17,863 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 98 transitions, 199 flow [2023-08-26 06:59:17,866 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 98 places, 98 transitions, 199 flow [2023-08-26 06:59:17,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 98 transitions, 199 flow [2023-08-26 06:59:17,890 INFO L124 PetriNetUnfolderBase]: 4/98 cut-off events. [2023-08-26 06:59:17,890 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 06:59:17,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 98 events. 4/98 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 83 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2023-08-26 06:59:17,893 INFO L119 LiptonReduction]: Number of co-enabled transitions 2088 [2023-08-26 06:59:19,719 INFO L134 LiptonReduction]: Checked pairs total: 8674 [2023-08-26 06:59:19,719 INFO L136 LiptonReduction]: Total number of compositions: 72 [2023-08-26 06:59:19,732 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 06:59:19,737 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;@5aa3ad33, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 06:59:19,737 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-26 06:59:19,742 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 06:59:19,742 INFO L124 PetriNetUnfolderBase]: 1/16 cut-off events. [2023-08-26 06:59:19,743 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 06:59:19,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:59:19,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:59:19,744 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-26 06:59:19,749 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:59:19,749 INFO L85 PathProgramCache]: Analyzing trace with hash -909158832, now seen corresponding path program 1 times [2023-08-26 06:59:19,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:59:19,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91047929] [2023-08-26 06:59:19,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:19,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:59:19,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:19,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 06:59:19,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:59:19,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91047929] [2023-08-26 06:59:19,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91047929] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:59:19,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 06:59:19,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 06:59:19,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337925484] [2023-08-26 06:59:19,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:59:19,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 06:59:19,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:59:20,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 06:59:20,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 06:59:20,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 171 [2023-08-26 06:59:20,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:20,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:59:20,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 171 [2023-08-26 06:59:20,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:59:20,068 INFO L124 PetriNetUnfolderBase]: 37/165 cut-off events. [2023-08-26 06:59:20,069 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 06:59:20,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 165 events. 37/165 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 626 event pairs, 36 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 244. Up to 89 conditions per place. [2023-08-26 06:59:20,071 INFO L140 encePairwiseOnDemand]: 168/171 looper letters, 15 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2023-08-26 06:59:20,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 37 transitions, 111 flow [2023-08-26 06:59:20,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 06:59:20,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 06:59:20,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 279 transitions. [2023-08-26 06:59:20,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.543859649122807 [2023-08-26 06:59:20,084 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 279 transitions. [2023-08-26 06:59:20,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 279 transitions. [2023-08-26 06:59:20,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:59:20,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 279 transitions. [2023-08-26 06:59:20,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:20,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:20,095 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:20,097 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 75 flow. Second operand 3 states and 279 transitions. [2023-08-26 06:59:20,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 37 transitions, 111 flow [2023-08-26 06:59:20,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 37 transitions, 110 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 06:59:20,101 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 86 flow [2023-08-26 06:59:20,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2023-08-26 06:59:20,105 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2023-08-26 06:59:20,105 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 86 flow [2023-08-26 06:59:20,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:20,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:59:20,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:59:20,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 06:59:20,106 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-26 06:59:20,107 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:59:20,107 INFO L85 PathProgramCache]: Analyzing trace with hash 461640011, now seen corresponding path program 1 times [2023-08-26 06:59:20,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:59:20,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520123351] [2023-08-26 06:59:20,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:20,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:59:20,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:20,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 06:59:20,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:59:20,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520123351] [2023-08-26 06:59:20,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520123351] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 06:59:20,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419645936] [2023-08-26 06:59:20,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:20,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 06:59:20,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 06:59:20,205 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 06:59:20,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-26 06:59:20,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:20,333 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 06:59:20,337 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 06:59:20,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 06:59:20,366 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 06:59:20,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 06:59:20,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419645936] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 06:59:20,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 06:59:20,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-26 06:59:20,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941303655] [2023-08-26 06:59:20,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 06:59:20,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 06:59:20,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:59:20,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 06:59:20,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 06:59:20,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 171 [2023-08-26 06:59:20,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 86 flow. Second operand has 7 states, 7 states have (on average 88.57142857142857) internal successors, (620), 7 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:20,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:59:20,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 171 [2023-08-26 06:59:20,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:59:20,482 INFO L124 PetriNetUnfolderBase]: 37/168 cut-off events. [2023-08-26 06:59:20,482 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 06:59:20,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 168 events. 37/168 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 626 event pairs, 36 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 263. Up to 89 conditions per place. [2023-08-26 06:59:20,486 INFO L140 encePairwiseOnDemand]: 168/171 looper letters, 15 selfloop transitions, 5 changer transitions 0/40 dead transitions. [2023-08-26 06:59:20,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 40 transitions, 138 flow [2023-08-26 06:59:20,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 06:59:20,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 06:59:20,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 545 transitions. [2023-08-26 06:59:20,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5311890838206628 [2023-08-26 06:59:20,494 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 545 transitions. [2023-08-26 06:59:20,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 545 transitions. [2023-08-26 06:59:20,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:59:20,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 545 transitions. [2023-08-26 06:59:20,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.83333333333333) internal successors, (545), 6 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:20,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:20,504 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:20,504 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 86 flow. Second operand 6 states and 545 transitions. [2023-08-26 06:59:20,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 40 transitions, 138 flow [2023-08-26 06:59:20,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 40 transitions, 134 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-26 06:59:20,506 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 118 flow [2023-08-26 06:59:20,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=118, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2023-08-26 06:59:20,507 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 9 predicate places. [2023-08-26 06:59:20,507 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 118 flow [2023-08-26 06:59:20,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 88.57142857142857) internal successors, (620), 7 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:20,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:59:20,508 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:59:20,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-26 06:59:20,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 06:59:20,714 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-26 06:59:20,714 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:59:20,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1407404646, now seen corresponding path program 2 times [2023-08-26 06:59:20,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:59:20,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625146114] [2023-08-26 06:59:20,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:20,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:59:20,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:21,116 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-26 06:59:21,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:59:21,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625146114] [2023-08-26 06:59:21,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625146114] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:59:21,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 06:59:21,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 06:59:21,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501306259] [2023-08-26 06:59:21,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:59:21,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 06:59:21,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:59:21,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 06:59:21,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 06:59:21,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 171 [2023-08-26 06:59:21,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 118 flow. Second operand has 6 states, 6 states have (on average 59.833333333333336) internal successors, (359), 6 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:21,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:59:21,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 171 [2023-08-26 06:59:21,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:59:21,488 INFO L124 PetriNetUnfolderBase]: 345/749 cut-off events. [2023-08-26 06:59:21,488 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 06:59:21,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1525 conditions, 749 events. 345/749 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3554 event pairs, 162 based on Foata normal form. 0/656 useless extension candidates. Maximal degree in co-relation 1492. Up to 427 conditions per place. [2023-08-26 06:59:21,496 INFO L140 encePairwiseOnDemand]: 160/171 looper letters, 103 selfloop transitions, 22 changer transitions 0/125 dead transitions. [2023-08-26 06:59:21,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 125 transitions, 538 flow [2023-08-26 06:59:21,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 06:59:21,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 06:59:21,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 470 transitions. [2023-08-26 06:59:21,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4580896686159844 [2023-08-26 06:59:21,498 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 470 transitions. [2023-08-26 06:59:21,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 470 transitions. [2023-08-26 06:59:21,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:59:21,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 470 transitions. [2023-08-26 06:59:21,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 78.33333333333333) internal successors, (470), 6 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:21,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:21,503 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:21,503 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 118 flow. Second operand 6 states and 470 transitions. [2023-08-26 06:59:21,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 125 transitions, 538 flow [2023-08-26 06:59:21,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 125 transitions, 524 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-26 06:59:21,507 INFO L231 Difference]: Finished difference. Result has 56 places, 62 transitions, 250 flow [2023-08-26 06:59:21,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=250, PETRI_PLACES=56, PETRI_TRANSITIONS=62} [2023-08-26 06:59:21,509 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 17 predicate places. [2023-08-26 06:59:21,509 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 62 transitions, 250 flow [2023-08-26 06:59:21,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 59.833333333333336) internal successors, (359), 6 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:21,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:59:21,510 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:59:21,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 06:59:21,510 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-26 06:59:21,511 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:59:21,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1537914768, now seen corresponding path program 1 times [2023-08-26 06:59:21,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:59:21,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628622922] [2023-08-26 06:59:21,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:21,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:59:21,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:21,814 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-26 06:59:21,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:59:21,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628622922] [2023-08-26 06:59:21,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628622922] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:59:21,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 06:59:21,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 06:59:21,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781115908] [2023-08-26 06:59:21,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:59:21,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 06:59:21,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:59:21,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 06:59:21,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 06:59:21,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 171 [2023-08-26 06:59:21,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 62 transitions, 250 flow. Second operand has 6 states, 6 states have (on average 60.833333333333336) internal successors, (365), 6 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:21,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:59:21,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 171 [2023-08-26 06:59:21,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:59:22,206 INFO L124 PetriNetUnfolderBase]: 434/948 cut-off events. [2023-08-26 06:59:22,206 INFO L125 PetriNetUnfolderBase]: For 343/343 co-relation queries the response was YES. [2023-08-26 06:59:22,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2382 conditions, 948 events. 434/948 cut-off events. For 343/343 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5034 event pairs, 174 based on Foata normal form. 0/850 useless extension candidates. Maximal degree in co-relation 2351. Up to 638 conditions per place. [2023-08-26 06:59:22,212 INFO L140 encePairwiseOnDemand]: 160/171 looper letters, 117 selfloop transitions, 26 changer transitions 0/143 dead transitions. [2023-08-26 06:59:22,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 143 transitions, 786 flow [2023-08-26 06:59:22,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 06:59:22,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 06:59:22,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 472 transitions. [2023-08-26 06:59:22,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4600389863547758 [2023-08-26 06:59:22,215 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 472 transitions. [2023-08-26 06:59:22,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 472 transitions. [2023-08-26 06:59:22,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:59:22,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 472 transitions. [2023-08-26 06:59:22,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:22,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:22,219 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:22,219 INFO L175 Difference]: Start difference. First operand has 56 places, 62 transitions, 250 flow. Second operand 6 states and 472 transitions. [2023-08-26 06:59:22,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 143 transitions, 786 flow [2023-08-26 06:59:22,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 143 transitions, 786 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 06:59:22,224 INFO L231 Difference]: Finished difference. Result has 65 places, 84 transitions, 428 flow [2023-08-26 06:59:22,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=428, PETRI_PLACES=65, PETRI_TRANSITIONS=84} [2023-08-26 06:59:22,225 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 26 predicate places. [2023-08-26 06:59:22,225 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 84 transitions, 428 flow [2023-08-26 06:59:22,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 60.833333333333336) internal successors, (365), 6 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:22,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:59:22,226 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:59:22,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 06:59:22,226 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-26 06:59:22,226 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:59:22,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1226470076, now seen corresponding path program 1 times [2023-08-26 06:59:22,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:59:22,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202955524] [2023-08-26 06:59:22,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:22,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:59:22,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:22,297 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 06:59:22,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:59:22,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202955524] [2023-08-26 06:59:22,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202955524] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 06:59:22,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423230498] [2023-08-26 06:59:22,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:22,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 06:59:22,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 06:59:22,299 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 06:59:22,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-26 06:59:22,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:22,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 06:59:22,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 06:59:22,415 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 06:59:22,415 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 06:59:22,472 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 06:59:22,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423230498] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 06:59:22,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 06:59:22,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-26 06:59:22,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667883646] [2023-08-26 06:59:22,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 06:59:22,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-26 06:59:22,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:59:22,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-26 06:59:22,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-26 06:59:22,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 171 [2023-08-26 06:59:22,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 84 transitions, 428 flow. Second operand has 13 states, 13 states have (on average 88.46153846153847) internal successors, (1150), 13 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:22,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:59:22,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 171 [2023-08-26 06:59:22,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:59:22,573 INFO L124 PetriNetUnfolderBase]: 136/505 cut-off events. [2023-08-26 06:59:22,574 INFO L125 PetriNetUnfolderBase]: For 185/192 co-relation queries the response was YES. [2023-08-26 06:59:22,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1265 conditions, 505 events. 136/505 cut-off events. For 185/192 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3245 event pairs, 68 based on Foata normal form. 6/495 useless extension candidates. Maximal degree in co-relation 1205. Up to 229 conditions per place. [2023-08-26 06:59:22,577 INFO L140 encePairwiseOnDemand]: 168/171 looper letters, 27 selfloop transitions, 11 changer transitions 0/90 dead transitions. [2023-08-26 06:59:22,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 90 transitions, 540 flow [2023-08-26 06:59:22,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-26 06:59:22,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-26 06:59:22,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1076 transitions. [2023-08-26 06:59:22,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5243664717348928 [2023-08-26 06:59:22,581 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1076 transitions. [2023-08-26 06:59:22,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1076 transitions. [2023-08-26 06:59:22,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:59:22,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1076 transitions. [2023-08-26 06:59:22,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 89.66666666666667) internal successors, (1076), 12 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:22,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 171.0) internal successors, (2223), 13 states have internal predecessors, (2223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:22,587 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 171.0) internal successors, (2223), 13 states have internal predecessors, (2223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:22,587 INFO L175 Difference]: Start difference. First operand has 65 places, 84 transitions, 428 flow. Second operand 12 states and 1076 transitions. [2023-08-26 06:59:22,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 90 transitions, 540 flow [2023-08-26 06:59:22,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 90 transitions, 540 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 06:59:22,592 INFO L231 Difference]: Finished difference. Result has 82 places, 90 transitions, 512 flow [2023-08-26 06:59:22,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=512, PETRI_PLACES=82, PETRI_TRANSITIONS=90} [2023-08-26 06:59:22,593 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 43 predicate places. [2023-08-26 06:59:22,593 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 90 transitions, 512 flow [2023-08-26 06:59:22,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 88.46153846153847) internal successors, (1150), 13 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:22,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:59:22,594 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:59:22,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-26 06:59:22,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 06:59:22,801 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-26 06:59:22,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:59:22,802 INFO L85 PathProgramCache]: Analyzing trace with hash 531476636, now seen corresponding path program 2 times [2023-08-26 06:59:22,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:59:22,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086993887] [2023-08-26 06:59:22,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:22,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:59:22,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:23,129 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 06:59:23,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:59:23,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086993887] [2023-08-26 06:59:23,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086993887] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:59:23,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 06:59:23,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 06:59:23,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579487504] [2023-08-26 06:59:23,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:59:23,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 06:59:23,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:59:23,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 06:59:23,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 06:59:23,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 171 [2023-08-26 06:59:23,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 90 transitions, 512 flow. Second operand has 6 states, 6 states have (on average 58.833333333333336) internal successors, (353), 6 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:23,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:59:23,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 171 [2023-08-26 06:59:23,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:59:23,464 INFO L124 PetriNetUnfolderBase]: 567/1233 cut-off events. [2023-08-26 06:59:23,465 INFO L125 PetriNetUnfolderBase]: For 807/807 co-relation queries the response was YES. [2023-08-26 06:59:23,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3669 conditions, 1233 events. 567/1233 cut-off events. For 807/807 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 6860 event pairs, 233 based on Foata normal form. 0/1118 useless extension candidates. Maximal degree in co-relation 3584. Up to 912 conditions per place. [2023-08-26 06:59:23,473 INFO L140 encePairwiseOnDemand]: 157/171 looper letters, 132 selfloop transitions, 52 changer transitions 2/186 dead transitions. [2023-08-26 06:59:23,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 186 transitions, 1285 flow [2023-08-26 06:59:23,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 06:59:23,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 06:59:23,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 450 transitions. [2023-08-26 06:59:23,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43859649122807015 [2023-08-26 06:59:23,475 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 450 transitions. [2023-08-26 06:59:23,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 450 transitions. [2023-08-26 06:59:23,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:59:23,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 450 transitions. [2023-08-26 06:59:23,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 75.0) internal successors, (450), 6 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:23,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:23,479 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:23,479 INFO L175 Difference]: Start difference. First operand has 82 places, 90 transitions, 512 flow. Second operand 6 states and 450 transitions. [2023-08-26 06:59:23,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 186 transitions, 1285 flow [2023-08-26 06:59:23,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 186 transitions, 1237 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-26 06:59:23,486 INFO L231 Difference]: Finished difference. Result has 86 places, 135 transitions, 921 flow [2023-08-26 06:59:23,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=921, PETRI_PLACES=86, PETRI_TRANSITIONS=135} [2023-08-26 06:59:23,489 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 47 predicate places. [2023-08-26 06:59:23,489 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 135 transitions, 921 flow [2023-08-26 06:59:23,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 58.833333333333336) internal successors, (353), 6 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:23,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:59:23,489 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:59:23,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 06:59:23,490 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-26 06:59:23,490 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:59:23,490 INFO L85 PathProgramCache]: Analyzing trace with hash -62601877, now seen corresponding path program 1 times [2023-08-26 06:59:23,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:59:23,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359945044] [2023-08-26 06:59:23,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:23,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:59:23,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:23,806 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 06:59:23,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:59:23,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359945044] [2023-08-26 06:59:23,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359945044] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:59:23,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 06:59:23,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 06:59:23,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214937899] [2023-08-26 06:59:23,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:59:23,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 06:59:23,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:59:23,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 06:59:23,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 06:59:23,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 171 [2023-08-26 06:59:23,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 135 transitions, 921 flow. Second operand has 6 states, 6 states have (on average 59.833333333333336) internal successors, (359), 6 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:23,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:59:23,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 171 [2023-08-26 06:59:23,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:59:24,325 INFO L124 PetriNetUnfolderBase]: 739/1594 cut-off events. [2023-08-26 06:59:24,329 INFO L125 PetriNetUnfolderBase]: For 2073/2073 co-relation queries the response was YES. [2023-08-26 06:59:24,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5528 conditions, 1594 events. 739/1594 cut-off events. For 2073/2073 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 9476 event pairs, 225 based on Foata normal form. 0/1522 useless extension candidates. Maximal degree in co-relation 5463. Up to 1057 conditions per place. [2023-08-26 06:59:24,342 INFO L140 encePairwiseOnDemand]: 156/171 looper letters, 157 selfloop transitions, 72 changer transitions 38/267 dead transitions. [2023-08-26 06:59:24,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 267 transitions, 2135 flow [2023-08-26 06:59:24,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 06:59:24,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 06:59:24,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 460 transitions. [2023-08-26 06:59:24,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44834307992202727 [2023-08-26 06:59:24,344 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 460 transitions. [2023-08-26 06:59:24,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 460 transitions. [2023-08-26 06:59:24,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:59:24,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 460 transitions. [2023-08-26 06:59:24,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:24,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:24,349 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:24,349 INFO L175 Difference]: Start difference. First operand has 86 places, 135 transitions, 921 flow. Second operand 6 states and 460 transitions. [2023-08-26 06:59:24,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 267 transitions, 2135 flow [2023-08-26 06:59:24,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 267 transitions, 2083 flow, removed 26 selfloop flow, removed 0 redundant places. [2023-08-26 06:59:24,369 INFO L231 Difference]: Finished difference. Result has 95 places, 181 transitions, 1437 flow [2023-08-26 06:59:24,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=869, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1437, PETRI_PLACES=95, PETRI_TRANSITIONS=181} [2023-08-26 06:59:24,370 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 56 predicate places. [2023-08-26 06:59:24,370 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 181 transitions, 1437 flow [2023-08-26 06:59:24,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 59.833333333333336) internal successors, (359), 6 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:24,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:59:24,371 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:59:24,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 06:59:24,371 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-26 06:59:24,371 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:59:24,371 INFO L85 PathProgramCache]: Analyzing trace with hash -488170001, now seen corresponding path program 1 times [2023-08-26 06:59:24,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:59:24,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461097068] [2023-08-26 06:59:24,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:24,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:59:24,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:25,016 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 06:59:25,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:59:25,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461097068] [2023-08-26 06:59:25,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461097068] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:59:25,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 06:59:25,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-26 06:59:25,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689357655] [2023-08-26 06:59:25,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:59:25,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-26 06:59:25,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:59:25,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-26 06:59:25,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-26 06:59:25,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 171 [2023-08-26 06:59:25,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 181 transitions, 1437 flow. Second operand has 9 states, 9 states have (on average 56.22222222222222) internal successors, (506), 9 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:25,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:59:25,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 171 [2023-08-26 06:59:25,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:59:25,975 INFO L124 PetriNetUnfolderBase]: 1357/2985 cut-off events. [2023-08-26 06:59:25,976 INFO L125 PetriNetUnfolderBase]: For 6979/6979 co-relation queries the response was YES. [2023-08-26 06:59:25,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12495 conditions, 2985 events. 1357/2985 cut-off events. For 6979/6979 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 21312 event pairs, 232 based on Foata normal form. 30/3015 useless extension candidates. Maximal degree in co-relation 12425. Up to 1175 conditions per place. [2023-08-26 06:59:26,000 INFO L140 encePairwiseOnDemand]: 156/171 looper letters, 368 selfloop transitions, 78 changer transitions 120/566 dead transitions. [2023-08-26 06:59:26,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 566 transitions, 5374 flow [2023-08-26 06:59:26,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-26 06:59:26,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-26 06:59:26,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1012 transitions. [2023-08-26 06:59:26,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.394541910331384 [2023-08-26 06:59:26,004 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1012 transitions. [2023-08-26 06:59:26,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1012 transitions. [2023-08-26 06:59:26,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:59:26,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1012 transitions. [2023-08-26 06:59:26,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 67.46666666666667) internal successors, (1012), 15 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:26,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 171.0) internal successors, (2736), 16 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:26,012 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 171.0) internal successors, (2736), 16 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:26,012 INFO L175 Difference]: Start difference. First operand has 95 places, 181 transitions, 1437 flow. Second operand 15 states and 1012 transitions. [2023-08-26 06:59:26,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 566 transitions, 5374 flow [2023-08-26 06:59:26,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 566 transitions, 5318 flow, removed 28 selfloop flow, removed 0 redundant places. [2023-08-26 06:59:26,063 INFO L231 Difference]: Finished difference. Result has 122 places, 244 transitions, 2376 flow [2023-08-26 06:59:26,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=1409, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2376, PETRI_PLACES=122, PETRI_TRANSITIONS=244} [2023-08-26 06:59:26,064 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 83 predicate places. [2023-08-26 06:59:26,064 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 244 transitions, 2376 flow [2023-08-26 06:59:26,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 56.22222222222222) internal successors, (506), 9 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:26,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:59:26,065 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:59:26,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 06:59:26,065 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-26 06:59:26,065 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:59:26,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1271918263, now seen corresponding path program 2 times [2023-08-26 06:59:26,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:59:26,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321900006] [2023-08-26 06:59:26,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:26,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:59:26,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:26,866 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 06:59:26,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:59:26,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321900006] [2023-08-26 06:59:26,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321900006] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:59:26,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 06:59:26,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-26 06:59:26,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268344089] [2023-08-26 06:59:26,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:59:26,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-26 06:59:26,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:59:26,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-26 06:59:26,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-08-26 06:59:26,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 171 [2023-08-26 06:59:26,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 244 transitions, 2376 flow. Second operand has 9 states, 9 states have (on average 56.22222222222222) internal successors, (506), 9 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:26,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:59:26,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 171 [2023-08-26 06:59:26,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:59:27,939 INFO L124 PetriNetUnfolderBase]: 1727/3770 cut-off events. [2023-08-26 06:59:27,940 INFO L125 PetriNetUnfolderBase]: For 12329/12329 co-relation queries the response was YES. [2023-08-26 06:59:27,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17471 conditions, 3770 events. 1727/3770 cut-off events. For 12329/12329 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 28014 event pairs, 303 based on Foata normal form. 6/3776 useless extension candidates. Maximal degree in co-relation 17388. Up to 1589 conditions per place. [2023-08-26 06:59:27,979 INFO L140 encePairwiseOnDemand]: 152/171 looper letters, 312 selfloop transitions, 165 changer transitions 73/550 dead transitions. [2023-08-26 06:59:27,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 550 transitions, 5878 flow [2023-08-26 06:59:27,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-26 06:59:27,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-26 06:59:27,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 725 transitions. [2023-08-26 06:59:27,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4239766081871345 [2023-08-26 06:59:27,982 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 725 transitions. [2023-08-26 06:59:27,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 725 transitions. [2023-08-26 06:59:27,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:59:27,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 725 transitions. [2023-08-26 06:59:27,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 72.5) internal successors, (725), 10 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:27,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 171.0) internal successors, (1881), 11 states have internal predecessors, (1881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:27,987 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 171.0) internal successors, (1881), 11 states have internal predecessors, (1881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:27,987 INFO L175 Difference]: Start difference. First operand has 122 places, 244 transitions, 2376 flow. Second operand 10 states and 725 transitions. [2023-08-26 06:59:27,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 550 transitions, 5878 flow [2023-08-26 06:59:28,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 550 transitions, 5818 flow, removed 30 selfloop flow, removed 4 redundant places. [2023-08-26 06:59:28,204 INFO L231 Difference]: Finished difference. Result has 130 places, 312 transitions, 3731 flow [2023-08-26 06:59:28,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=2352, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3731, PETRI_PLACES=130, PETRI_TRANSITIONS=312} [2023-08-26 06:59:28,206 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 91 predicate places. [2023-08-26 06:59:28,206 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 312 transitions, 3731 flow [2023-08-26 06:59:28,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 56.22222222222222) internal successors, (506), 9 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:28,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:59:28,207 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:59:28,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 06:59:28,208 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-26 06:59:28,208 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:59:28,208 INFO L85 PathProgramCache]: Analyzing trace with hash -954887177, now seen corresponding path program 1 times [2023-08-26 06:59:28,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:59:28,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555270013] [2023-08-26 06:59:28,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:28,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:59:28,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:28,720 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 06:59:28,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:59:28,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555270013] [2023-08-26 06:59:28,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555270013] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:59:28,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 06:59:28,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-26 06:59:28,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412854398] [2023-08-26 06:59:28,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:59:28,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-26 06:59:28,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:59:28,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-26 06:59:28,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-08-26 06:59:28,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 171 [2023-08-26 06:59:28,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 312 transitions, 3731 flow. Second operand has 9 states, 9 states have (on average 54.22222222222222) internal successors, (488), 9 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:28,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:59:28,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 171 [2023-08-26 06:59:28,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:59:30,036 INFO L124 PetriNetUnfolderBase]: 1680/3721 cut-off events. [2023-08-26 06:59:30,036 INFO L125 PetriNetUnfolderBase]: For 17357/17357 co-relation queries the response was YES. [2023-08-26 06:59:30,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19541 conditions, 3721 events. 1680/3721 cut-off events. For 17357/17357 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 28079 event pairs, 356 based on Foata normal form. 12/3733 useless extension candidates. Maximal degree in co-relation 19454. Up to 1089 conditions per place. [2023-08-26 06:59:30,082 INFO L140 encePairwiseOnDemand]: 153/171 looper letters, 281 selfloop transitions, 158 changer transitions 77/516 dead transitions. [2023-08-26 06:59:30,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 516 transitions, 6308 flow [2023-08-26 06:59:30,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-26 06:59:30,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-26 06:59:30,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 680 transitions. [2023-08-26 06:59:30,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39766081871345027 [2023-08-26 06:59:30,085 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 680 transitions. [2023-08-26 06:59:30,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 680 transitions. [2023-08-26 06:59:30,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:59:30,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 680 transitions. [2023-08-26 06:59:30,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 68.0) internal successors, (680), 10 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:30,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 171.0) internal successors, (1881), 11 states have internal predecessors, (1881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:30,090 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 171.0) internal successors, (1881), 11 states have internal predecessors, (1881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:30,090 INFO L175 Difference]: Start difference. First operand has 130 places, 312 transitions, 3731 flow. Second operand 10 states and 680 transitions. [2023-08-26 06:59:30,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 516 transitions, 6308 flow [2023-08-26 06:59:30,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 516 transitions, 6284 flow, removed 12 selfloop flow, removed 0 redundant places. [2023-08-26 06:59:30,209 INFO L231 Difference]: Finished difference. Result has 144 places, 333 transitions, 4461 flow [2023-08-26 06:59:30,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=3707, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4461, PETRI_PLACES=144, PETRI_TRANSITIONS=333} [2023-08-26 06:59:30,211 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 105 predicate places. [2023-08-26 06:59:30,211 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 333 transitions, 4461 flow [2023-08-26 06:59:30,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 54.22222222222222) internal successors, (488), 9 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:30,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:59:30,211 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:59:30,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 06:59:30,212 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-26 06:59:30,212 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:59:30,212 INFO L85 PathProgramCache]: Analyzing trace with hash 971744201, now seen corresponding path program 3 times [2023-08-26 06:59:30,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:59:30,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900649571] [2023-08-26 06:59:30,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:30,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:59:30,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:30,756 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 06:59:30,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:59:30,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900649571] [2023-08-26 06:59:30,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900649571] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:59:30,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 06:59:30,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-26 06:59:30,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436054930] [2023-08-26 06:59:30,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:59:30,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-26 06:59:30,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:59:30,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-26 06:59:30,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-08-26 06:59:30,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 171 [2023-08-26 06:59:30,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 333 transitions, 4461 flow. Second operand has 9 states, 9 states have (on average 56.22222222222222) internal successors, (506), 9 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:30,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:59:30,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 171 [2023-08-26 06:59:30,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:59:31,978 INFO L124 PetriNetUnfolderBase]: 1701/3746 cut-off events. [2023-08-26 06:59:31,978 INFO L125 PetriNetUnfolderBase]: For 25962/25962 co-relation queries the response was YES. [2023-08-26 06:59:31,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22134 conditions, 3746 events. 1701/3746 cut-off events. For 25962/25962 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 27803 event pairs, 435 based on Foata normal form. 30/3776 useless extension candidates. Maximal degree in co-relation 22040. Up to 1786 conditions per place. [2023-08-26 06:59:32,014 INFO L140 encePairwiseOnDemand]: 156/171 looper letters, 432 selfloop transitions, 104 changer transitions 48/584 dead transitions. [2023-08-26 06:59:32,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 584 transitions, 7758 flow [2023-08-26 06:59:32,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-26 06:59:32,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-26 06:59:32,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 648 transitions. [2023-08-26 06:59:32,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2023-08-26 06:59:32,016 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 648 transitions. [2023-08-26 06:59:32,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 648 transitions. [2023-08-26 06:59:32,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:59:32,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 648 transitions. [2023-08-26 06:59:32,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 72.0) internal successors, (648), 9 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:32,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 171.0) internal successors, (1710), 10 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:32,021 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 171.0) internal successors, (1710), 10 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:32,021 INFO L175 Difference]: Start difference. First operand has 144 places, 333 transitions, 4461 flow. Second operand 9 states and 648 transitions. [2023-08-26 06:59:32,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 584 transitions, 7758 flow [2023-08-26 06:59:32,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 584 transitions, 7706 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-26 06:59:32,213 INFO L231 Difference]: Finished difference. Result has 153 places, 347 transitions, 4973 flow [2023-08-26 06:59:32,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=4418, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4973, PETRI_PLACES=153, PETRI_TRANSITIONS=347} [2023-08-26 06:59:32,214 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 114 predicate places. [2023-08-26 06:59:32,214 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 347 transitions, 4973 flow [2023-08-26 06:59:32,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 56.22222222222222) internal successors, (506), 9 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:32,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:59:32,215 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:59:32,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 06:59:32,215 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-26 06:59:32,215 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:59:32,215 INFO L85 PathProgramCache]: Analyzing trace with hash -906423947, now seen corresponding path program 2 times [2023-08-26 06:59:32,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:59:32,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080349347] [2023-08-26 06:59:32,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:32,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:59:32,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:59:32,674 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 06:59:32,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:59:32,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080349347] [2023-08-26 06:59:32,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080349347] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:59:32,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 06:59:32,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-26 06:59:32,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728428730] [2023-08-26 06:59:32,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:59:32,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-26 06:59:32,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:59:32,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-26 06:59:32,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-08-26 06:59:32,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 171 [2023-08-26 06:59:32,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 347 transitions, 4973 flow. Second operand has 9 states, 9 states have (on average 54.22222222222222) internal successors, (488), 9 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:32,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:59:32,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 171 [2023-08-26 06:59:32,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:59:33,824 INFO L124 PetriNetUnfolderBase]: 1912/4189 cut-off events. [2023-08-26 06:59:33,824 INFO L125 PetriNetUnfolderBase]: For 33166/33166 co-relation queries the response was YES. [2023-08-26 06:59:33,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25290 conditions, 4189 events. 1912/4189 cut-off events. For 33166/33166 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 31801 event pairs, 314 based on Foata normal form. 18/4207 useless extension candidates. Maximal degree in co-relation 25192. Up to 1786 conditions per place. [2023-08-26 06:59:33,862 INFO L140 encePairwiseOnDemand]: 150/171 looper letters, 348 selfloop transitions, 167 changer transitions 73/588 dead transitions. [2023-08-26 06:59:33,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 588 transitions, 8417 flow [2023-08-26 06:59:33,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-26 06:59:33,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-26 06:59:33,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 641 transitions. [2023-08-26 06:59:33,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41650422352176736 [2023-08-26 06:59:33,865 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 641 transitions. [2023-08-26 06:59:33,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 641 transitions. [2023-08-26 06:59:33,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:59:33,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 641 transitions. [2023-08-26 06:59:33,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 71.22222222222223) internal successors, (641), 9 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:33,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 171.0) internal successors, (1710), 10 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:33,870 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 171.0) internal successors, (1710), 10 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:33,870 INFO L175 Difference]: Start difference. First operand has 153 places, 347 transitions, 4973 flow. Second operand 9 states and 641 transitions. [2023-08-26 06:59:33,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 588 transitions, 8417 flow [2023-08-26 06:59:34,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 588 transitions, 8276 flow, removed 52 selfloop flow, removed 1 redundant places. [2023-08-26 06:59:34,096 INFO L231 Difference]: Finished difference. Result has 166 places, 388 transitions, 6187 flow [2023-08-26 06:59:34,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=4856, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6187, PETRI_PLACES=166, PETRI_TRANSITIONS=388} [2023-08-26 06:59:34,098 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 127 predicate places. [2023-08-26 06:59:34,098 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 388 transitions, 6187 flow [2023-08-26 06:59:34,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 54.22222222222222) internal successors, (488), 9 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:59:34,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:59:34,099 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:59:34,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 06:59:34,099 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-26 06:59:34,100 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:59:34,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1458009297, now seen corresponding path program 1 times [2023-08-26 06:59:34,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:59:34,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135492688] [2023-08-26 06:59:34,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:59:34,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:59:34,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:00:21,736 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:00:21,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:00:21,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135492688] [2023-08-26 07:00:21,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135492688] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:00:21,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349068381] [2023-08-26 07:00:21,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:00:21,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:00:21,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:00:21,741 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 07:00:21,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-26 07:00:21,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:00:21,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 55 conjunts are in the unsatisfiable core [2023-08-26 07:00:21,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:00:21,924 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-08-26 07:00:21,953 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-26 07:00:21,991 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-08-26 07:00:22,030 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2023-08-26 07:00:22,100 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 57 [2023-08-26 07:00:22,169 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-26 07:00:22,171 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 11 [2023-08-26 07:00:22,206 INFO L322 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2023-08-26 07:00:22,206 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 63 treesize of output 71 [2023-08-26 07:00:22,239 INFO L322 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-26 07:00:22,240 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 64 treesize of output 72 [2023-08-26 07:00:22,271 INFO L322 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-26 07:00:22,272 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 64 treesize of output 72 [2023-08-26 07:00:22,302 INFO L322 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-26 07:00:22,302 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 64 treesize of output 72 [2023-08-26 07:00:22,461 INFO L322 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2023-08-26 07:00:22,462 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 22 case distinctions, treesize of input 99 treesize of output 116 [2023-08-26 07:00:34,616 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-26 07:00:34,617 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 07:00:35,383 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 07:00:35,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349068381] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-26 07:00:35,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-26 07:00:35,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [18, 15] total 33 [2023-08-26 07:00:35,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238117315] [2023-08-26 07:00:35,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:00:35,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-26 07:00:35,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:00:35,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-26 07:00:35,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=970, Unknown=5, NotChecked=0, Total=1122 [2023-08-26 07:00:35,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 171 [2023-08-26 07:00:35,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 388 transitions, 6187 flow. Second operand has 11 states, 11 states have (on average 55.81818181818182) internal successors, (614), 11 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:00:35,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:00:35,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 171 [2023-08-26 07:00:35,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:00:41,128 INFO L124 PetriNetUnfolderBase]: 1941/4266 cut-off events. [2023-08-26 07:00:41,128 INFO L125 PetriNetUnfolderBase]: For 43094/43094 co-relation queries the response was YES. [2023-08-26 07:00:41,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27727 conditions, 4266 events. 1941/4266 cut-off events. For 43094/43094 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 32478 event pairs, 331 based on Foata normal form. 6/4272 useless extension candidates. Maximal degree in co-relation 27623. Up to 2461 conditions per place. [2023-08-26 07:00:41,166 INFO L140 encePairwiseOnDemand]: 156/171 looper letters, 450 selfloop transitions, 169 changer transitions 68/687 dead transitions. [2023-08-26 07:00:41,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 687 transitions, 11435 flow [2023-08-26 07:00:41,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-26 07:00:41,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-26 07:00:41,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 778 transitions. [2023-08-26 07:00:41,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41360978203083465 [2023-08-26 07:00:41,169 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 778 transitions. [2023-08-26 07:00:41,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 778 transitions. [2023-08-26 07:00:41,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:00:41,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 778 transitions. [2023-08-26 07:00:41,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 70.72727272727273) internal successors, (778), 11 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:00:41,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 171.0) internal successors, (2052), 12 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:00:41,175 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 171.0) internal successors, (2052), 12 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:00:41,175 INFO L175 Difference]: Start difference. First operand has 166 places, 388 transitions, 6187 flow. Second operand 11 states and 778 transitions. [2023-08-26 07:00:41,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 687 transitions, 11435 flow [2023-08-26 07:00:41,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 687 transitions, 11257 flow, removed 54 selfloop flow, removed 2 redundant places. [2023-08-26 07:00:41,436 INFO L231 Difference]: Finished difference. Result has 180 places, 446 transitions, 7584 flow [2023-08-26 07:00:41,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=6095, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7584, PETRI_PLACES=180, PETRI_TRANSITIONS=446} [2023-08-26 07:00:41,438 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 141 predicate places. [2023-08-26 07:00:41,438 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 446 transitions, 7584 flow [2023-08-26 07:00:41,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 55.81818181818182) internal successors, (614), 11 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:00:41,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:00:41,439 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:00:41,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-26 07:00:41,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:00:41,644 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-26 07:00:41,645 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:00:41,645 INFO L85 PathProgramCache]: Analyzing trace with hash -592374751, now seen corresponding path program 2 times [2023-08-26 07:00:41,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:00:41,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127874495] [2023-08-26 07:00:41,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:00:41,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:00:41,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:00:41,996 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 07:00:41,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:00:41,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127874495] [2023-08-26 07:00:41,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127874495] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:00:41,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:00:41,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-26 07:00:41,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060198147] [2023-08-26 07:00:41,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:00:41,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-26 07:00:41,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:00:41,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-26 07:00:41,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-26 07:00:42,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 171 [2023-08-26 07:00:42,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 446 transitions, 7584 flow. Second operand has 9 states, 9 states have (on average 56.22222222222222) internal successors, (506), 9 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:00:42,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:00:42,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 171 [2023-08-26 07:00:42,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:00:43,277 INFO L124 PetriNetUnfolderBase]: 1938/4302 cut-off events. [2023-08-26 07:00:43,277 INFO L125 PetriNetUnfolderBase]: For 50126/50126 co-relation queries the response was YES. [2023-08-26 07:00:43,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29332 conditions, 4302 events. 1938/4302 cut-off events. For 50126/50126 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 32925 event pairs, 400 based on Foata normal form. 36/4338 useless extension candidates. Maximal degree in co-relation 29224. Up to 2214 conditions per place. [2023-08-26 07:00:43,316 INFO L140 encePairwiseOnDemand]: 156/171 looper letters, 514 selfloop transitions, 156 changer transitions 73/743 dead transitions. [2023-08-26 07:00:43,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 743 transitions, 12783 flow [2023-08-26 07:00:43,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-26 07:00:43,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-26 07:00:43,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 943 transitions. [2023-08-26 07:00:43,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939014202172097 [2023-08-26 07:00:43,319 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 943 transitions. [2023-08-26 07:00:43,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 943 transitions. [2023-08-26 07:00:43,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:00:43,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 943 transitions. [2023-08-26 07:00:43,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 67.35714285714286) internal successors, (943), 14 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:00:43,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 171.0) internal successors, (2565), 15 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:00:43,324 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 171.0) internal successors, (2565), 15 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:00:43,325 INFO L175 Difference]: Start difference. First operand has 180 places, 446 transitions, 7584 flow. Second operand 14 states and 943 transitions. [2023-08-26 07:00:43,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 743 transitions, 12783 flow [2023-08-26 07:00:43,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 743 transitions, 12665 flow, removed 20 selfloop flow, removed 2 redundant places. [2023-08-26 07:00:43,649 INFO L231 Difference]: Finished difference. Result has 200 places, 495 transitions, 8758 flow [2023-08-26 07:00:43,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=7499, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=8758, PETRI_PLACES=200, PETRI_TRANSITIONS=495} [2023-08-26 07:00:43,650 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 161 predicate places. [2023-08-26 07:00:43,650 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 495 transitions, 8758 flow [2023-08-26 07:00:43,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 56.22222222222222) internal successors, (506), 9 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:00:43,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:00:43,651 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:00:43,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-26 07:00:43,651 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-26 07:00:43,651 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:00:43,651 INFO L85 PathProgramCache]: Analyzing trace with hash -494103879, now seen corresponding path program 3 times [2023-08-26 07:00:43,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:00:43,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577822598] [2023-08-26 07:00:43,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:00:43,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:00:43,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:00:46,653 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:00:46,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:00:46,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577822598] [2023-08-26 07:00:46,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577822598] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:00:46,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893371863] [2023-08-26 07:00:46,654 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 07:00:46,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:00:46,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:00:46,657 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 07:00:46,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-26 07:00:46,770 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-26 07:00:46,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 07:00:46,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 43 conjunts are in the unsatisfiable core [2023-08-26 07:00:46,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:00:46,779 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-08-26 07:00:46,808 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-26 07:00:46,808 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 11 [2023-08-26 07:00:46,829 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-26 07:00:46,868 INFO L322 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2023-08-26 07:00:46,869 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2023-08-26 07:00:46,878 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-08-26 07:00:46,918 INFO L322 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-26 07:00:46,918 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 42 [2023-08-26 07:00:46,931 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 07:00:46,932 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2023-08-26 07:00:46,982 INFO L322 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-26 07:00:46,982 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 52 treesize of output 57 [2023-08-26 07:00:47,011 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 07:00:47,012 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2023-08-26 07:00:47,069 INFO L322 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-26 07:00:47,069 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 64 treesize of output 72 [2023-08-26 07:00:47,220 INFO L322 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2023-08-26 07:00:47,220 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 22 case distinctions, treesize of input 99 treesize of output 116 [2023-08-26 07:00:57,315 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 07:00:57,315 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 07:00:57,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893371863] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:00:57,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 07:00:57,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [19] total 29 [2023-08-26 07:00:57,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778783471] [2023-08-26 07:00:57,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:00:57,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-26 07:00:57,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:00:57,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-26 07:00:57,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=738, Unknown=4, NotChecked=0, Total=870 [2023-08-26 07:00:57,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 171 [2023-08-26 07:00:57,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 495 transitions, 8758 flow. Second operand has 11 states, 11 states have (on average 55.81818181818182) internal successors, (614), 11 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:00:57,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:00:57,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 171 [2023-08-26 07:00:57,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:00:59,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-26 07:01:03,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-26 07:01:05,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-26 07:01:07,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-26 07:01:11,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-26 07:01:14,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-26 07:01:14,988 INFO L124 PetriNetUnfolderBase]: 1902/4220 cut-off events. [2023-08-26 07:01:14,988 INFO L125 PetriNetUnfolderBase]: For 57618/57618 co-relation queries the response was YES. [2023-08-26 07:01:15,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30381 conditions, 4220 events. 1902/4220 cut-off events. For 57618/57618 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 32025 event pairs, 408 based on Foata normal form. 66/4286 useless extension candidates. Maximal degree in co-relation 30290. Up to 1535 conditions per place. [2023-08-26 07:01:15,038 INFO L140 encePairwiseOnDemand]: 157/171 looper letters, 612 selfloop transitions, 100 changer transitions 82/794 dead transitions. [2023-08-26 07:01:15,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 794 transitions, 14467 flow [2023-08-26 07:01:15,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-26 07:01:15,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-26 07:01:15,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 975 transitions. [2023-08-26 07:01:15,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38011695906432746 [2023-08-26 07:01:15,041 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 975 transitions. [2023-08-26 07:01:15,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 975 transitions. [2023-08-26 07:01:15,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:01:15,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 975 transitions. [2023-08-26 07:01:15,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 65.0) internal successors, (975), 15 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:15,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 171.0) internal successors, (2736), 16 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:15,046 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 171.0) internal successors, (2736), 16 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:15,046 INFO L175 Difference]: Start difference. First operand has 200 places, 495 transitions, 8758 flow. Second operand 15 states and 975 transitions. [2023-08-26 07:01:15,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 794 transitions, 14467 flow [2023-08-26 07:01:15,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 794 transitions, 14287 flow, removed 15 selfloop flow, removed 6 redundant places. [2023-08-26 07:01:15,303 INFO L231 Difference]: Finished difference. Result has 215 places, 522 transitions, 9472 flow [2023-08-26 07:01:15,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=8642, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=9472, PETRI_PLACES=215, PETRI_TRANSITIONS=522} [2023-08-26 07:01:15,304 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 176 predicate places. [2023-08-26 07:01:15,304 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 522 transitions, 9472 flow [2023-08-26 07:01:15,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 55.81818181818182) internal successors, (614), 11 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:15,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:01:15,304 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:01:15,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-26 07:01:15,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-26 07:01:15,505 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-26 07:01:15,506 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:01:15,506 INFO L85 PathProgramCache]: Analyzing trace with hash 645668667, now seen corresponding path program 4 times [2023-08-26 07:01:15,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:01:15,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808378296] [2023-08-26 07:01:15,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:01:15,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:01:15,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:01:18,142 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:01:18,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:01:18,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808378296] [2023-08-26 07:01:18,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808378296] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:01:18,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803486143] [2023-08-26 07:01:18,143 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 07:01:18,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:01:18,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:01:18,144 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 07:01:18,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-26 07:01:18,275 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 07:01:18,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 07:01:18,278 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 67 conjunts are in the unsatisfiable core [2023-08-26 07:01:18,281 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:01:18,457 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-08-26 07:01:18,485 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-26 07:01:18,522 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-08-26 07:01:18,562 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2023-08-26 07:01:18,615 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-26 07:01:18,615 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 11 [2023-08-26 07:01:18,642 INFO L322 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2023-08-26 07:01:18,643 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 56 [2023-08-26 07:01:18,668 INFO L322 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-26 07:01:18,668 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 52 treesize of output 57 [2023-08-26 07:01:18,721 INFO L322 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2023-08-26 07:01:18,722 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 64 treesize of output 72 [2023-08-26 07:01:18,740 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-26 07:01:18,741 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 64 treesize of output 72 [2023-08-26 07:01:18,802 INFO L322 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2023-08-26 07:01:18,803 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 76 treesize of output 87 [2023-08-26 07:01:18,960 INFO L322 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2023-08-26 07:01:18,960 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 29 case distinctions, treesize of input 110 treesize of output 119 [2023-08-26 07:01:29,075 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 07:01:29,075 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 07:01:30,034 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 07:01:30,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803486143] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-26 07:01:30,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-26 07:01:30,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [19, 20] total 46 [2023-08-26 07:01:30,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771234482] [2023-08-26 07:01:30,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:01:30,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-26 07:01:30,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:01:30,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-26 07:01:30,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1960, Unknown=4, NotChecked=0, Total=2162 [2023-08-26 07:01:30,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 171 [2023-08-26 07:01:30,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 522 transitions, 9472 flow. Second operand has 13 states, 13 states have (on average 55.53846153846154) internal successors, (722), 13 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:30,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:01:30,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 171 [2023-08-26 07:01:30,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:01:36,304 INFO L124 PetriNetUnfolderBase]: 1919/4253 cut-off events. [2023-08-26 07:01:36,305 INFO L125 PetriNetUnfolderBase]: For 62918/62918 co-relation queries the response was YES. [2023-08-26 07:01:36,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31669 conditions, 4253 events. 1919/4253 cut-off events. For 62918/62918 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 32377 event pairs, 296 based on Foata normal form. 9/4262 useless extension candidates. Maximal degree in co-relation 31576. Up to 2519 conditions per place. [2023-08-26 07:01:36,343 INFO L140 encePairwiseOnDemand]: 156/171 looper letters, 481 selfloop transitions, 229 changer transitions 41/751 dead transitions. [2023-08-26 07:01:36,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 751 transitions, 14315 flow [2023-08-26 07:01:36,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-26 07:01:36,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-26 07:01:36,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 763 transitions. [2023-08-26 07:01:36,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40563530037214246 [2023-08-26 07:01:36,345 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 763 transitions. [2023-08-26 07:01:36,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 763 transitions. [2023-08-26 07:01:36,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:01:36,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 763 transitions. [2023-08-26 07:01:36,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 69.36363636363636) internal successors, (763), 11 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:36,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 171.0) internal successors, (2052), 12 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:36,349 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 171.0) internal successors, (2052), 12 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:36,349 INFO L175 Difference]: Start difference. First operand has 215 places, 522 transitions, 9472 flow. Second operand 11 states and 763 transitions. [2023-08-26 07:01:36,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 751 transitions, 14315 flow [2023-08-26 07:01:36,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 751 transitions, 14165 flow, removed 66 selfloop flow, removed 5 redundant places. [2023-08-26 07:01:36,688 INFO L231 Difference]: Finished difference. Result has 223 places, 554 transitions, 10806 flow [2023-08-26 07:01:36,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=9348, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10806, PETRI_PLACES=223, PETRI_TRANSITIONS=554} [2023-08-26 07:01:36,688 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 184 predicate places. [2023-08-26 07:01:36,689 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 554 transitions, 10806 flow [2023-08-26 07:01:36,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 55.53846153846154) internal successors, (722), 13 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:36,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:01:36,689 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:01:36,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-26 07:01:36,889 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,SelfDestructingSolverStorable15 [2023-08-26 07:01:36,890 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-26 07:01:36,890 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:01:36,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1777185204, now seen corresponding path program 1 times [2023-08-26 07:01:36,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:01:36,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051487101] [2023-08-26 07:01:36,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:01:36,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:01:36,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:01:37,255 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 07:01:37,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:01:37,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051487101] [2023-08-26 07:01:37,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051487101] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:01:37,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:01:37,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-26 07:01:37,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464739486] [2023-08-26 07:01:37,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:01:37,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-26 07:01:37,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:01:37,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-26 07:01:37,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-08-26 07:01:37,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 171 [2023-08-26 07:01:37,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 554 transitions, 10806 flow. Second operand has 9 states, 9 states have (on average 54.22222222222222) internal successors, (488), 9 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:37,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:01:37,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 171 [2023-08-26 07:01:37,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:01:38,724 INFO L124 PetriNetUnfolderBase]: 2106/4633 cut-off events. [2023-08-26 07:01:38,724 INFO L125 PetriNetUnfolderBase]: For 76452/76452 co-relation queries the response was YES. [2023-08-26 07:01:38,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35515 conditions, 4633 events. 2106/4633 cut-off events. For 76452/76452 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 35439 event pairs, 580 based on Foata normal form. 36/4669 useless extension candidates. Maximal degree in co-relation 35387. Up to 2894 conditions per place. [2023-08-26 07:01:38,765 INFO L140 encePairwiseOnDemand]: 159/171 looper letters, 464 selfloop transitions, 243 changer transitions 75/782 dead transitions. [2023-08-26 07:01:38,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 782 transitions, 15680 flow [2023-08-26 07:01:38,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-26 07:01:38,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-26 07:01:38,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 780 transitions. [2023-08-26 07:01:38,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38011695906432746 [2023-08-26 07:01:38,767 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 780 transitions. [2023-08-26 07:01:38,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 780 transitions. [2023-08-26 07:01:38,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:01:38,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 780 transitions. [2023-08-26 07:01:38,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 65.0) internal successors, (780), 12 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:38,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 171.0) internal successors, (2223), 13 states have internal predecessors, (2223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:38,772 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 171.0) internal successors, (2223), 13 states have internal predecessors, (2223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:38,772 INFO L175 Difference]: Start difference. First operand has 223 places, 554 transitions, 10806 flow. Second operand 12 states and 780 transitions. [2023-08-26 07:01:38,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 782 transitions, 15680 flow [2023-08-26 07:01:39,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 782 transitions, 15588 flow, removed 14 selfloop flow, removed 3 redundant places. [2023-08-26 07:01:39,217 INFO L231 Difference]: Finished difference. Result has 238 places, 589 transitions, 12018 flow [2023-08-26 07:01:39,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=10740, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=554, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12018, PETRI_PLACES=238, PETRI_TRANSITIONS=589} [2023-08-26 07:01:39,217 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 199 predicate places. [2023-08-26 07:01:39,217 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 589 transitions, 12018 flow [2023-08-26 07:01:39,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 54.22222222222222) internal successors, (488), 9 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:39,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:01:39,218 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:01:39,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-26 07:01:39,218 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-26 07:01:39,218 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:01:39,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1806892427, now seen corresponding path program 5 times [2023-08-26 07:01:39,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:01:39,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449879879] [2023-08-26 07:01:39,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:01:39,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:01:39,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:01:39,713 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 07:01:39,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:01:39,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449879879] [2023-08-26 07:01:39,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449879879] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:01:39,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:01:39,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-26 07:01:39,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092463610] [2023-08-26 07:01:39,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:01:39,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-26 07:01:39,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:01:39,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-26 07:01:39,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-08-26 07:01:39,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 171 [2023-08-26 07:01:39,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 589 transitions, 12018 flow. Second operand has 9 states, 9 states have (on average 56.22222222222222) internal successors, (506), 9 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:39,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:01:39,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 171 [2023-08-26 07:01:39,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:01:41,458 INFO L124 PetriNetUnfolderBase]: 2181/4827 cut-off events. [2023-08-26 07:01:41,459 INFO L125 PetriNetUnfolderBase]: For 91870/91870 co-relation queries the response was YES. [2023-08-26 07:01:41,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39401 conditions, 4827 events. 2181/4827 cut-off events. For 91870/91870 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 37693 event pairs, 375 based on Foata normal form. 18/4845 useless extension candidates. Maximal degree in co-relation 39266. Up to 2792 conditions per place. [2023-08-26 07:01:41,503 INFO L140 encePairwiseOnDemand]: 156/171 looper letters, 516 selfloop transitions, 255 changer transitions 43/814 dead transitions. [2023-08-26 07:01:41,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 814 transitions, 17446 flow [2023-08-26 07:01:41,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-26 07:01:41,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-26 07:01:41,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 867 transitions. [2023-08-26 07:01:41,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3900134952766532 [2023-08-26 07:01:41,505 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 867 transitions. [2023-08-26 07:01:41,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 867 transitions. [2023-08-26 07:01:41,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:01:41,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 867 transitions. [2023-08-26 07:01:41,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 66.6923076923077) internal successors, (867), 13 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:41,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 171.0) internal successors, (2394), 14 states have internal predecessors, (2394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:41,509 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 171.0) internal successors, (2394), 14 states have internal predecessors, (2394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:41,509 INFO L175 Difference]: Start difference. First operand has 238 places, 589 transitions, 12018 flow. Second operand 13 states and 867 transitions. [2023-08-26 07:01:41,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 814 transitions, 17446 flow [2023-08-26 07:01:41,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 814 transitions, 17368 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-08-26 07:01:41,993 INFO L231 Difference]: Finished difference. Result has 252 places, 634 transitions, 13895 flow [2023-08-26 07:01:41,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=11958, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=13895, PETRI_PLACES=252, PETRI_TRANSITIONS=634} [2023-08-26 07:01:41,994 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 213 predicate places. [2023-08-26 07:01:41,994 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 634 transitions, 13895 flow [2023-08-26 07:01:41,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 56.22222222222222) internal successors, (506), 9 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:41,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:01:41,994 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:01:41,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-26 07:01:41,995 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-26 07:01:41,995 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:01:41,995 INFO L85 PathProgramCache]: Analyzing trace with hash 496780128, now seen corresponding path program 2 times [2023-08-26 07:01:41,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:01:41,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648610793] [2023-08-26 07:01:41,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:01:41,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:01:42,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:01:42,329 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 07:01:42,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:01:42,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648610793] [2023-08-26 07:01:42,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648610793] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:01:42,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:01:42,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-26 07:01:42,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493200840] [2023-08-26 07:01:42,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:01:42,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-26 07:01:42,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:01:42,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-26 07:01:42,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-26 07:01:42,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 171 [2023-08-26 07:01:42,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 634 transitions, 13895 flow. Second operand has 9 states, 9 states have (on average 54.22222222222222) internal successors, (488), 9 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:42,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:01:42,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 171 [2023-08-26 07:01:42,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:01:43,971 INFO L124 PetriNetUnfolderBase]: 2101/4664 cut-off events. [2023-08-26 07:01:43,971 INFO L125 PetriNetUnfolderBase]: For 99374/99374 co-relation queries the response was YES. [2023-08-26 07:01:44,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39113 conditions, 4664 events. 2101/4664 cut-off events. For 99374/99374 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 35978 event pairs, 614 based on Foata normal form. 72/4736 useless extension candidates. Maximal degree in co-relation 38982. Up to 2383 conditions per place. [2023-08-26 07:01:44,016 INFO L140 encePairwiseOnDemand]: 161/171 looper letters, 593 selfloop transitions, 169 changer transitions 91/853 dead transitions. [2023-08-26 07:01:44,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 853 transitions, 19014 flow [2023-08-26 07:01:44,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-26 07:01:44,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-26 07:01:44,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 836 transitions. [2023-08-26 07:01:44,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37606837606837606 [2023-08-26 07:01:44,018 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 836 transitions. [2023-08-26 07:01:44,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 836 transitions. [2023-08-26 07:01:44,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:01:44,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 836 transitions. [2023-08-26 07:01:44,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 64.3076923076923) internal successors, (836), 13 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:44,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 171.0) internal successors, (2394), 14 states have internal predecessors, (2394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:44,023 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 171.0) internal successors, (2394), 14 states have internal predecessors, (2394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:44,023 INFO L175 Difference]: Start difference. First operand has 252 places, 634 transitions, 13895 flow. Second operand 13 states and 836 transitions. [2023-08-26 07:01:44,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 853 transitions, 19014 flow [2023-08-26 07:01:44,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 853 transitions, 18871 flow, removed 39 selfloop flow, removed 4 redundant places. [2023-08-26 07:01:44,563 INFO L231 Difference]: Finished difference. Result has 265 places, 639 transitions, 14092 flow [2023-08-26 07:01:44,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=13772, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=634, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=14092, PETRI_PLACES=265, PETRI_TRANSITIONS=639} [2023-08-26 07:01:44,564 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 226 predicate places. [2023-08-26 07:01:44,564 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 639 transitions, 14092 flow [2023-08-26 07:01:44,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 54.22222222222222) internal successors, (488), 9 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:44,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:01:44,565 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:01:44,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-26 07:01:44,565 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-26 07:01:44,566 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:01:44,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1138615991, now seen corresponding path program 3 times [2023-08-26 07:01:44,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:01:44,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592490698] [2023-08-26 07:01:44,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:01:44,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:01:44,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:01:44,896 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 07:01:44,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:01:44,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592490698] [2023-08-26 07:01:44,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592490698] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:01:44,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:01:44,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-26 07:01:44,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65246389] [2023-08-26 07:01:44,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:01:44,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-26 07:01:44,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:01:44,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-26 07:01:44,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-08-26 07:01:44,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 171 [2023-08-26 07:01:44,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 639 transitions, 14092 flow. Second operand has 9 states, 9 states have (on average 54.22222222222222) internal successors, (488), 9 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:44,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:01:44,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 171 [2023-08-26 07:01:44,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:01:46,500 INFO L124 PetriNetUnfolderBase]: 1981/4442 cut-off events. [2023-08-26 07:01:46,500 INFO L125 PetriNetUnfolderBase]: For 103854/103854 co-relation queries the response was YES. [2023-08-26 07:01:46,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38824 conditions, 4442 events. 1981/4442 cut-off events. For 103854/103854 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 34188 event pairs, 548 based on Foata normal form. 66/4508 useless extension candidates. Maximal degree in co-relation 38678. Up to 1773 conditions per place. [2023-08-26 07:01:46,548 INFO L140 encePairwiseOnDemand]: 157/171 looper letters, 603 selfloop transitions, 141 changer transitions 86/830 dead transitions. [2023-08-26 07:01:46,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 830 transitions, 18761 flow [2023-08-26 07:01:46,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-26 07:01:46,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-26 07:01:46,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 616 transitions. [2023-08-26 07:01:46,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40025990903183883 [2023-08-26 07:01:46,549 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 616 transitions. [2023-08-26 07:01:46,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 616 transitions. [2023-08-26 07:01:46,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:01:46,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 616 transitions. [2023-08-26 07:01:46,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 68.44444444444444) internal successors, (616), 9 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:46,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 171.0) internal successors, (1710), 10 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:46,552 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 171.0) internal successors, (1710), 10 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:46,553 INFO L175 Difference]: Start difference. First operand has 265 places, 639 transitions, 14092 flow. Second operand 9 states and 616 transitions. [2023-08-26 07:01:46,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 830 transitions, 18761 flow [2023-08-26 07:01:47,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 830 transitions, 18555 flow, removed 63 selfloop flow, removed 6 redundant places. [2023-08-26 07:01:47,103 INFO L231 Difference]: Finished difference. Result has 269 places, 648 transitions, 14585 flow [2023-08-26 07:01:47,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=13954, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=639, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14585, PETRI_PLACES=269, PETRI_TRANSITIONS=648} [2023-08-26 07:01:47,104 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 230 predicate places. [2023-08-26 07:01:47,104 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 648 transitions, 14585 flow [2023-08-26 07:01:47,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 54.22222222222222) internal successors, (488), 9 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:47,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:01:47,104 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:01:47,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-26 07:01:47,105 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-26 07:01:47,105 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:01:47,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1149343815, now seen corresponding path program 4 times [2023-08-26 07:01:47,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:01:47,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415541272] [2023-08-26 07:01:47,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:01:47,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:01:47,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:01:47,467 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 07:01:47,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:01:47,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415541272] [2023-08-26 07:01:47,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415541272] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:01:47,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:01:47,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-26 07:01:47,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985112132] [2023-08-26 07:01:47,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:01:47,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-26 07:01:47,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:01:47,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-26 07:01:47,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-26 07:01:47,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 171 [2023-08-26 07:01:47,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 648 transitions, 14585 flow. Second operand has 9 states, 9 states have (on average 54.22222222222222) internal successors, (488), 9 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:47,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:01:47,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 171 [2023-08-26 07:01:47,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:01:49,280 INFO L124 PetriNetUnfolderBase]: 1762/4058 cut-off events. [2023-08-26 07:01:49,280 INFO L125 PetriNetUnfolderBase]: For 103266/103266 co-relation queries the response was YES. [2023-08-26 07:01:49,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36814 conditions, 4058 events. 1762/4058 cut-off events. For 103266/103266 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 31484 event pairs, 460 based on Foata normal form. 97/4155 useless extension candidates. Maximal degree in co-relation 36666. Up to 1999 conditions per place. [2023-08-26 07:01:49,325 INFO L140 encePairwiseOnDemand]: 158/171 looper letters, 386 selfloop transitions, 60 changer transitions 405/851 dead transitions. [2023-08-26 07:01:49,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 851 transitions, 19324 flow [2023-08-26 07:01:49,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-26 07:01:49,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-26 07:01:49,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 941 transitions. [2023-08-26 07:01:49,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36686159844054583 [2023-08-26 07:01:49,327 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 941 transitions. [2023-08-26 07:01:49,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 941 transitions. [2023-08-26 07:01:49,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:01:49,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 941 transitions. [2023-08-26 07:01:49,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 62.733333333333334) internal successors, (941), 15 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:49,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 171.0) internal successors, (2736), 16 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:49,332 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 171.0) internal successors, (2736), 16 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:49,332 INFO L175 Difference]: Start difference. First operand has 269 places, 648 transitions, 14585 flow. Second operand 15 states and 941 transitions. [2023-08-26 07:01:49,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 851 transitions, 19324 flow [2023-08-26 07:01:49,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 851 transitions, 19218 flow, removed 47 selfloop flow, removed 1 redundant places. [2023-08-26 07:01:49,992 INFO L231 Difference]: Finished difference. Result has 291 places, 398 transitions, 8777 flow [2023-08-26 07:01:49,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=14485, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=648, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=588, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=8777, PETRI_PLACES=291, PETRI_TRANSITIONS=398} [2023-08-26 07:01:49,993 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 252 predicate places. [2023-08-26 07:01:49,993 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 398 transitions, 8777 flow [2023-08-26 07:01:49,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 54.22222222222222) internal successors, (488), 9 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:49,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:01:49,993 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:01:49,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-26 07:01:49,994 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-26 07:01:49,994 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:01:49,994 INFO L85 PathProgramCache]: Analyzing trace with hash 486052304, now seen corresponding path program 3 times [2023-08-26 07:01:49,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:01:49,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181407617] [2023-08-26 07:01:49,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:01:49,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:01:50,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:01:50,314 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 07:01:50,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:01:50,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181407617] [2023-08-26 07:01:50,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181407617] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:01:50,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:01:50,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-26 07:01:50,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235561050] [2023-08-26 07:01:50,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:01:50,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-26 07:01:50,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:01:50,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-26 07:01:50,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-08-26 07:01:50,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 171 [2023-08-26 07:01:50,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 398 transitions, 8777 flow. Second operand has 9 states, 9 states have (on average 54.22222222222222) internal successors, (488), 9 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:50,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:01:50,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 171 [2023-08-26 07:01:50,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:01:51,293 INFO L124 PetriNetUnfolderBase]: 992/2330 cut-off events. [2023-08-26 07:01:51,293 INFO L125 PetriNetUnfolderBase]: For 62164/62164 co-relation queries the response was YES. [2023-08-26 07:01:51,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21796 conditions, 2330 events. 992/2330 cut-off events. For 62164/62164 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 16127 event pairs, 218 based on Foata normal form. 115/2445 useless extension candidates. Maximal degree in co-relation 21669. Up to 1185 conditions per place. [2023-08-26 07:01:51,319 INFO L140 encePairwiseOnDemand]: 162/171 looper letters, 195 selfloop transitions, 31 changer transitions 371/597 dead transitions. [2023-08-26 07:01:51,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 597 transitions, 13648 flow [2023-08-26 07:01:51,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-26 07:01:51,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-26 07:01:51,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 546 transitions. [2023-08-26 07:01:51,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3991228070175439 [2023-08-26 07:01:51,320 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 546 transitions. [2023-08-26 07:01:51,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 546 transitions. [2023-08-26 07:01:51,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:01:51,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 546 transitions. [2023-08-26 07:01:51,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 68.25) internal successors, (546), 8 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:51,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 171.0) internal successors, (1539), 9 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:51,323 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 171.0) internal successors, (1539), 9 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:51,323 INFO L175 Difference]: Start difference. First operand has 291 places, 398 transitions, 8777 flow. Second operand 8 states and 546 transitions. [2023-08-26 07:01:51,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 597 transitions, 13648 flow [2023-08-26 07:01:51,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 597 transitions, 12021 flow, removed 173 selfloop flow, removed 50 redundant places. [2023-08-26 07:01:51,781 INFO L231 Difference]: Finished difference. Result has 230 places, 189 transitions, 2887 flow [2023-08-26 07:01:51,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=7416, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2887, PETRI_PLACES=230, PETRI_TRANSITIONS=189} [2023-08-26 07:01:51,782 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 191 predicate places. [2023-08-26 07:01:51,782 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 189 transitions, 2887 flow [2023-08-26 07:01:51,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 54.22222222222222) internal successors, (488), 9 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:51,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:01:51,782 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:01:51,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-26 07:01:51,783 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-26 07:01:51,783 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:01:51,783 INFO L85 PathProgramCache]: Analyzing trace with hash 438923229, now seen corresponding path program 6 times [2023-08-26 07:01:51,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:01:51,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868362759] [2023-08-26 07:01:51,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:01:51,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:01:51,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:01:52,380 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 07:01:52,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:01:52,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868362759] [2023-08-26 07:01:52,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868362759] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:01:52,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:01:52,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-26 07:01:52,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066762233] [2023-08-26 07:01:52,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:01:52,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-26 07:01:52,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:01:52,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-26 07:01:52,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-08-26 07:01:52,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 171 [2023-08-26 07:01:52,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 189 transitions, 2887 flow. Second operand has 9 states, 9 states have (on average 56.22222222222222) internal successors, (506), 9 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:52,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:01:52,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 171 [2023-08-26 07:01:52,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:01:52,966 INFO L124 PetriNetUnfolderBase]: 347/905 cut-off events. [2023-08-26 07:01:52,966 INFO L125 PetriNetUnfolderBase]: For 12506/12506 co-relation queries the response was YES. [2023-08-26 07:01:52,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6963 conditions, 905 events. 347/905 cut-off events. For 12506/12506 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 5070 event pairs, 50 based on Foata normal form. 11/916 useless extension candidates. Maximal degree in co-relation 6868. Up to 478 conditions per place. [2023-08-26 07:01:52,975 INFO L140 encePairwiseOnDemand]: 157/171 looper letters, 158 selfloop transitions, 48 changer transitions 67/273 dead transitions. [2023-08-26 07:01:52,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 273 transitions, 4588 flow [2023-08-26 07:01:52,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-26 07:01:52,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-26 07:01:52,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 779 transitions. [2023-08-26 07:01:52,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37962962962962965 [2023-08-26 07:01:52,977 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 779 transitions. [2023-08-26 07:01:52,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 779 transitions. [2023-08-26 07:01:52,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:01:52,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 779 transitions. [2023-08-26 07:01:52,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 64.91666666666667) internal successors, (779), 12 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:52,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 171.0) internal successors, (2223), 13 states have internal predecessors, (2223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:52,980 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 171.0) internal successors, (2223), 13 states have internal predecessors, (2223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:52,980 INFO L175 Difference]: Start difference. First operand has 230 places, 189 transitions, 2887 flow. Second operand 12 states and 779 transitions. [2023-08-26 07:01:52,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 273 transitions, 4588 flow [2023-08-26 07:01:53,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 273 transitions, 3817 flow, removed 140 selfloop flow, removed 37 redundant places. [2023-08-26 07:01:53,052 INFO L231 Difference]: Finished difference. Result has 190 places, 173 transitions, 2151 flow [2023-08-26 07:01:53,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=2289, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2151, PETRI_PLACES=190, PETRI_TRANSITIONS=173} [2023-08-26 07:01:53,053 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 151 predicate places. [2023-08-26 07:01:53,053 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 173 transitions, 2151 flow [2023-08-26 07:01:53,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 56.22222222222222) internal successors, (506), 9 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:53,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:01:53,054 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:01:53,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-26 07:01:53,054 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-26 07:01:53,054 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:01:53,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1448035744, now seen corresponding path program 4 times [2023-08-26 07:01:53,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:01:53,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837254367] [2023-08-26 07:01:53,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:01:53,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:01:53,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:01:53,449 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 07:01:53,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:01:53,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837254367] [2023-08-26 07:01:53,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837254367] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:01:53,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:01:53,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-26 07:01:53,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399003517] [2023-08-26 07:01:53,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:01:53,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-26 07:01:53,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:01:53,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-26 07:01:53,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-08-26 07:01:53,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 171 [2023-08-26 07:01:53,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 173 transitions, 2151 flow. Second operand has 9 states, 9 states have (on average 54.22222222222222) internal successors, (488), 9 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:53,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:01:53,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 171 [2023-08-26 07:01:53,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:01:53,929 INFO L124 PetriNetUnfolderBase]: 323/849 cut-off events. [2023-08-26 07:01:53,930 INFO L125 PetriNetUnfolderBase]: For 6869/6869 co-relation queries the response was YES. [2023-08-26 07:01:53,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5669 conditions, 849 events. 323/849 cut-off events. For 6869/6869 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4734 event pairs, 82 based on Foata normal form. 24/873 useless extension candidates. Maximal degree in co-relation 5564. Up to 387 conditions per place. [2023-08-26 07:01:53,936 INFO L140 encePairwiseOnDemand]: 159/171 looper letters, 144 selfloop transitions, 41 changer transitions 61/246 dead transitions. [2023-08-26 07:01:53,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 246 transitions, 3570 flow [2023-08-26 07:01:53,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-26 07:01:53,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-26 07:01:53,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 683 transitions. [2023-08-26 07:01:53,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36310473152578415 [2023-08-26 07:01:53,938 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 683 transitions. [2023-08-26 07:01:53,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 683 transitions. [2023-08-26 07:01:53,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:01:53,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 683 transitions. [2023-08-26 07:01:53,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 62.09090909090909) internal successors, (683), 11 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:53,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 171.0) internal successors, (2052), 12 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:53,941 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 171.0) internal successors, (2052), 12 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:53,942 INFO L175 Difference]: Start difference. First operand has 190 places, 173 transitions, 2151 flow. Second operand 11 states and 683 transitions. [2023-08-26 07:01:53,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 246 transitions, 3570 flow [2023-08-26 07:01:53,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 246 transitions, 3394 flow, removed 17 selfloop flow, removed 11 redundant places. [2023-08-26 07:01:53,974 INFO L231 Difference]: Finished difference. Result has 186 places, 159 transitions, 1927 flow [2023-08-26 07:01:53,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=2000, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1927, PETRI_PLACES=186, PETRI_TRANSITIONS=159} [2023-08-26 07:01:53,974 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 147 predicate places. [2023-08-26 07:01:53,974 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 159 transitions, 1927 flow [2023-08-26 07:01:53,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 54.22222222222222) internal successors, (488), 9 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:53,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:01:53,975 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:01:53,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-26 07:01:53,975 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-26 07:01:53,975 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:01:53,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1975793488, now seen corresponding path program 5 times [2023-08-26 07:01:53,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:01:53,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753377148] [2023-08-26 07:01:53,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:01:53,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:01:53,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:01:54,369 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 07:01:54,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:01:54,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753377148] [2023-08-26 07:01:54,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753377148] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:01:54,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:01:54,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-26 07:01:54,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015324592] [2023-08-26 07:01:54,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:01:54,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-26 07:01:54,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:01:54,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-26 07:01:54,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-08-26 07:01:54,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 171 [2023-08-26 07:01:54,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 159 transitions, 1927 flow. Second operand has 9 states, 9 states have (on average 54.22222222222222) internal successors, (488), 9 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:54,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:01:54,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 171 [2023-08-26 07:01:54,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:01:54,755 INFO L124 PetriNetUnfolderBase]: 289/768 cut-off events. [2023-08-26 07:01:54,755 INFO L125 PetriNetUnfolderBase]: For 5740/5740 co-relation queries the response was YES. [2023-08-26 07:01:54,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5031 conditions, 768 events. 289/768 cut-off events. For 5740/5740 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 4136 event pairs, 88 based on Foata normal form. 12/780 useless extension candidates. Maximal degree in co-relation 4925. Up to 454 conditions per place. [2023-08-26 07:01:54,761 INFO L140 encePairwiseOnDemand]: 154/171 looper letters, 135 selfloop transitions, 56 changer transitions 16/207 dead transitions. [2023-08-26 07:01:54,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 207 transitions, 2864 flow [2023-08-26 07:01:54,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-26 07:01:54,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-26 07:01:54,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 578 transitions. [2023-08-26 07:01:54,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3755685510071475 [2023-08-26 07:01:54,765 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 578 transitions. [2023-08-26 07:01:54,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 578 transitions. [2023-08-26 07:01:54,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:01:54,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 578 transitions. [2023-08-26 07:01:54,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 64.22222222222223) internal successors, (578), 9 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:54,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 171.0) internal successors, (1710), 10 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:54,767 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 171.0) internal successors, (1710), 10 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:54,767 INFO L175 Difference]: Start difference. First operand has 186 places, 159 transitions, 1927 flow. Second operand 9 states and 578 transitions. [2023-08-26 07:01:54,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 207 transitions, 2864 flow [2023-08-26 07:01:54,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 207 transitions, 2722 flow, removed 24 selfloop flow, removed 10 redundant places. [2023-08-26 07:01:54,795 INFO L231 Difference]: Finished difference. Result has 183 places, 159 transitions, 1945 flow [2023-08-26 07:01:54,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=1815, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1945, PETRI_PLACES=183, PETRI_TRANSITIONS=159} [2023-08-26 07:01:54,796 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 144 predicate places. [2023-08-26 07:01:54,796 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 159 transitions, 1945 flow [2023-08-26 07:01:54,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 54.22222222222222) internal successors, (488), 9 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:54,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:01:54,796 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:01:54,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-26 07:01:54,797 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-26 07:01:54,797 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:01:54,797 INFO L85 PathProgramCache]: Analyzing trace with hash 2099474188, now seen corresponding path program 6 times [2023-08-26 07:01:54,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:01:54,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446738263] [2023-08-26 07:01:54,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:01:54,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:01:54,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:01:55,158 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 07:01:55,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:01:55,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446738263] [2023-08-26 07:01:55,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446738263] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:01:55,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:01:55,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-26 07:01:55,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933903198] [2023-08-26 07:01:55,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:01:55,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-26 07:01:55,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:01:55,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-26 07:01:55,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-08-26 07:01:55,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 171 [2023-08-26 07:01:55,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 159 transitions, 1945 flow. Second operand has 9 states, 9 states have (on average 54.22222222222222) internal successors, (488), 9 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:55,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:01:55,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 171 [2023-08-26 07:01:55,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:01:55,692 INFO L124 PetriNetUnfolderBase]: 273/721 cut-off events. [2023-08-26 07:01:55,692 INFO L125 PetriNetUnfolderBase]: For 4973/4973 co-relation queries the response was YES. [2023-08-26 07:01:55,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4674 conditions, 721 events. 273/721 cut-off events. For 4973/4973 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3761 event pairs, 76 based on Foata normal form. 17/738 useless extension candidates. Maximal degree in co-relation 4607. Up to 387 conditions per place. [2023-08-26 07:01:55,698 INFO L140 encePairwiseOnDemand]: 155/171 looper letters, 107 selfloop transitions, 47 changer transitions 49/203 dead transitions. [2023-08-26 07:01:55,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 203 transitions, 2817 flow [2023-08-26 07:01:55,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-26 07:01:55,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-26 07:01:55,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 683 transitions. [2023-08-26 07:01:55,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36310473152578415 [2023-08-26 07:01:55,700 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 683 transitions. [2023-08-26 07:01:55,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 683 transitions. [2023-08-26 07:01:55,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:01:55,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 683 transitions. [2023-08-26 07:01:55,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 62.09090909090909) internal successors, (683), 11 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:55,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 171.0) internal successors, (2052), 12 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:55,703 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 171.0) internal successors, (2052), 12 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:55,703 INFO L175 Difference]: Start difference. First operand has 183 places, 159 transitions, 1945 flow. Second operand 11 states and 683 transitions. [2023-08-26 07:01:55,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 203 transitions, 2817 flow [2023-08-26 07:01:55,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 203 transitions, 2663 flow, removed 8 selfloop flow, removed 8 redundant places. [2023-08-26 07:01:55,737 INFO L231 Difference]: Finished difference. Result has 182 places, 127 transitions, 1470 flow [2023-08-26 07:01:55,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=1793, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1470, PETRI_PLACES=182, PETRI_TRANSITIONS=127} [2023-08-26 07:01:55,737 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 143 predicate places. [2023-08-26 07:01:55,738 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 127 transitions, 1470 flow [2023-08-26 07:01:55,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 54.22222222222222) internal successors, (488), 9 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:01:55,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:01:55,738 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:01:55,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-26 07:01:55,738 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-26 07:01:55,738 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:01:55,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1330106387, now seen corresponding path program 4 times [2023-08-26 07:01:55,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:01:55,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076960737] [2023-08-26 07:01:55,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:01:55,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:01:55,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:01:58,737 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:01:58,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:01:58,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076960737] [2023-08-26 07:01:58,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076960737] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:01:58,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479912738] [2023-08-26 07:01:58,738 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 07:01:58,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:01:58,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:01:58,739 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 07:01:58,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-26 07:01:58,882 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 07:01:58,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 07:01:58,884 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 49 conjunts are in the unsatisfiable core [2023-08-26 07:01:58,891 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:01:58,913 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-08-26 07:01:58,936 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-26 07:01:58,963 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-08-26 07:01:59,003 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-26 07:01:59,004 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 11 [2023-08-26 07:01:59,024 INFO L322 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2023-08-26 07:01:59,024 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 41 [2023-08-26 07:01:59,036 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 07:01:59,036 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2023-08-26 07:01:59,053 INFO L322 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-26 07:01:59,053 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 52 treesize of output 57 [2023-08-26 07:01:59,073 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 07:01:59,074 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2023-08-26 07:01:59,092 INFO L322 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-26 07:01:59,093 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 64 treesize of output 72 [2023-08-26 07:01:59,116 INFO L322 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-26 07:01:59,117 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 64 treesize of output 72 [2023-08-26 07:01:59,269 INFO L322 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2023-08-26 07:01:59,269 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 29 case distinctions, treesize of input 110 treesize of output 119 [2023-08-26 07:02:07,355 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-26 07:02:07,356 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 07:02:08,182 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 07:02:08,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479912738] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-26 07:02:08,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-26 07:02:08,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [19, 11] total 35 [2023-08-26 07:02:08,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511081419] [2023-08-26 07:02:08,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:02:08,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-26 07:02:08,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:02:08,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-26 07:02:08,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1109, Unknown=3, NotChecked=0, Total=1260 [2023-08-26 07:02:08,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 171 [2023-08-26 07:02:08,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 127 transitions, 1470 flow. Second operand has 13 states, 13 states have (on average 55.53846153846154) internal successors, (722), 13 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:02:08,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:02:08,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 171 [2023-08-26 07:02:08,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:02:13,434 INFO L124 PetriNetUnfolderBase]: 277/740 cut-off events. [2023-08-26 07:02:13,434 INFO L125 PetriNetUnfolderBase]: For 4705/4705 co-relation queries the response was YES. [2023-08-26 07:02:13,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4599 conditions, 740 events. 277/740 cut-off events. For 4705/4705 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 4068 event pairs, 67 based on Foata normal form. 6/746 useless extension candidates. Maximal degree in co-relation 4533. Up to 416 conditions per place. [2023-08-26 07:02:13,439 INFO L140 encePairwiseOnDemand]: 156/171 looper letters, 164 selfloop transitions, 38 changer transitions 11/213 dead transitions. [2023-08-26 07:02:13,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 213 transitions, 2760 flow [2023-08-26 07:02:13,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-26 07:02:13,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-26 07:02:13,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 654 transitions. [2023-08-26 07:02:13,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3824561403508772 [2023-08-26 07:02:13,440 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 654 transitions. [2023-08-26 07:02:13,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 654 transitions. [2023-08-26 07:02:13,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:02:13,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 654 transitions. [2023-08-26 07:02:13,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 65.4) internal successors, (654), 10 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:02:13,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 171.0) internal successors, (1881), 11 states have internal predecessors, (1881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:02:13,442 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 171.0) internal successors, (1881), 11 states have internal predecessors, (1881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:02:13,442 INFO L175 Difference]: Start difference. First operand has 182 places, 127 transitions, 1470 flow. Second operand 10 states and 654 transitions. [2023-08-26 07:02:13,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 213 transitions, 2760 flow [2023-08-26 07:02:13,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 213 transitions, 2198 flow, removed 16 selfloop flow, removed 39 redundant places. [2023-08-26 07:02:13,466 INFO L231 Difference]: Finished difference. Result has 137 places, 144 transitions, 1492 flow [2023-08-26 07:02:13,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=1168, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1492, PETRI_PLACES=137, PETRI_TRANSITIONS=144} [2023-08-26 07:02:13,466 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 98 predicate places. [2023-08-26 07:02:13,466 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 144 transitions, 1492 flow [2023-08-26 07:02:13,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 55.53846153846154) internal successors, (722), 13 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:02:13,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:02:13,467 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:02:13,473 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-26 07:02:13,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-08-26 07:02:13,674 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-26 07:02:13,674 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:02:13,674 INFO L85 PathProgramCache]: Analyzing trace with hash 179855317, now seen corresponding path program 5 times [2023-08-26 07:02:13,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:02:13,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127839355] [2023-08-26 07:02:13,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:02:13,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:02:13,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:02:14,206 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 07:02:14,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:02:14,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127839355] [2023-08-26 07:02:14,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127839355] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:02:14,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:02:14,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-26 07:02:14,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19888687] [2023-08-26 07:02:14,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:02:14,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-26 07:02:14,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:02:14,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-26 07:02:14,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-08-26 07:02:14,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 171 [2023-08-26 07:02:14,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 144 transitions, 1492 flow. Second operand has 9 states, 9 states have (on average 56.22222222222222) internal successors, (506), 9 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:02:14,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:02:14,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 171 [2023-08-26 07:02:14,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:02:14,562 INFO L124 PetriNetUnfolderBase]: 257/692 cut-off events. [2023-08-26 07:02:14,563 INFO L125 PetriNetUnfolderBase]: For 3373/3373 co-relation queries the response was YES. [2023-08-26 07:02:14,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3811 conditions, 692 events. 257/692 cut-off events. For 3373/3373 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3679 event pairs, 75 based on Foata normal form. 21/713 useless extension candidates. Maximal degree in co-relation 3759. Up to 276 conditions per place. [2023-08-26 07:02:14,566 INFO L140 encePairwiseOnDemand]: 160/171 looper letters, 147 selfloop transitions, 29 changer transitions 52/228 dead transitions. [2023-08-26 07:02:14,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 228 transitions, 2603 flow [2023-08-26 07:02:14,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-26 07:02:14,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-26 07:02:14,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 590 transitions. [2023-08-26 07:02:14,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38336582196231317 [2023-08-26 07:02:14,568 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 590 transitions. [2023-08-26 07:02:14,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 590 transitions. [2023-08-26 07:02:14,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:02:14,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 590 transitions. [2023-08-26 07:02:14,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 65.55555555555556) internal successors, (590), 9 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:02:14,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 171.0) internal successors, (1710), 10 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:02:14,571 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 171.0) internal successors, (1710), 10 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:02:14,571 INFO L175 Difference]: Start difference. First operand has 137 places, 144 transitions, 1492 flow. Second operand 9 states and 590 transitions. [2023-08-26 07:02:14,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 228 transitions, 2603 flow [2023-08-26 07:02:14,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 228 transitions, 2573 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-08-26 07:02:14,591 INFO L231 Difference]: Finished difference. Result has 142 places, 125 transitions, 1296 flow [2023-08-26 07:02:14,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=1466, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1296, PETRI_PLACES=142, PETRI_TRANSITIONS=125} [2023-08-26 07:02:14,592 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 103 predicate places. [2023-08-26 07:02:14,592 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 125 transitions, 1296 flow [2023-08-26 07:02:14,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 56.22222222222222) internal successors, (506), 9 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:02:14,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:02:14,593 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:02:14,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-26 07:02:14,593 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-26 07:02:14,593 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:02:14,593 INFO L85 PathProgramCache]: Analyzing trace with hash -535817137, now seen corresponding path program 6 times [2023-08-26 07:02:14,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:02:14,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59258177] [2023-08-26 07:02:14,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:02:14,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:02:14,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:02:15,155 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 07:02:15,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:02:15,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59258177] [2023-08-26 07:02:15,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59258177] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:02:15,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:02:15,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-26 07:02:15,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287870910] [2023-08-26 07:02:15,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:02:15,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-26 07:02:15,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:02:15,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-26 07:02:15,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-08-26 07:02:15,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 171 [2023-08-26 07:02:15,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 125 transitions, 1296 flow. Second operand has 9 states, 9 states have (on average 56.22222222222222) internal successors, (506), 9 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:02:15,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:02:15,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 171 [2023-08-26 07:02:15,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:02:15,467 INFO L124 PetriNetUnfolderBase]: 211/548 cut-off events. [2023-08-26 07:02:15,467 INFO L125 PetriNetUnfolderBase]: For 2818/2818 co-relation queries the response was YES. [2023-08-26 07:02:15,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3049 conditions, 548 events. 211/548 cut-off events. For 2818/2818 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2603 event pairs, 53 based on Foata normal form. 12/560 useless extension candidates. Maximal degree in co-relation 2996. Up to 337 conditions per place. [2023-08-26 07:02:15,470 INFO L140 encePairwiseOnDemand]: 161/171 looper letters, 104 selfloop transitions, 14 changer transitions 70/188 dead transitions. [2023-08-26 07:02:15,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 188 transitions, 2157 flow [2023-08-26 07:02:15,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-26 07:02:15,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-26 07:02:15,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 581 transitions. [2023-08-26 07:02:15,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3775178687459389 [2023-08-26 07:02:15,471 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 581 transitions. [2023-08-26 07:02:15,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 581 transitions. [2023-08-26 07:02:15,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:02:15,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 581 transitions. [2023-08-26 07:02:15,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 64.55555555555556) internal successors, (581), 9 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:02:15,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 171.0) internal successors, (1710), 10 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:02:15,474 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 171.0) internal successors, (1710), 10 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:02:15,474 INFO L175 Difference]: Start difference. First operand has 142 places, 125 transitions, 1296 flow. Second operand 9 states and 581 transitions. [2023-08-26 07:02:15,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 188 transitions, 2157 flow [2023-08-26 07:02:15,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 188 transitions, 2028 flow, removed 42 selfloop flow, removed 9 redundant places. [2023-08-26 07:02:15,486 INFO L231 Difference]: Finished difference. Result has 139 places, 106 transitions, 1057 flow [2023-08-26 07:02:15,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=1211, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1057, PETRI_PLACES=139, PETRI_TRANSITIONS=106} [2023-08-26 07:02:15,487 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 100 predicate places. [2023-08-26 07:02:15,487 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 106 transitions, 1057 flow [2023-08-26 07:02:15,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 56.22222222222222) internal successors, (506), 9 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:02:15,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:02:15,487 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:02:15,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-26 07:02:15,487 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-26 07:02:15,488 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:02:15,488 INFO L85 PathProgramCache]: Analyzing trace with hash -835991411, now seen corresponding path program 7 times [2023-08-26 07:02:15,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:02:15,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808673072] [2023-08-26 07:02:15,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:02:15,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:02:15,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:02:16,041 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 07:02:16,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:02:16,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808673072] [2023-08-26 07:02:16,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808673072] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:02:16,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:02:16,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-26 07:02:16,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406273686] [2023-08-26 07:02:16,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:02:16,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-26 07:02:16,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:02:16,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-26 07:02:16,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-08-26 07:02:16,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 171 [2023-08-26 07:02:16,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 106 transitions, 1057 flow. Second operand has 9 states, 9 states have (on average 56.22222222222222) internal successors, (506), 9 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:02:16,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:02:16,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 171 [2023-08-26 07:02:16,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:02:16,310 INFO L124 PetriNetUnfolderBase]: 158/415 cut-off events. [2023-08-26 07:02:16,311 INFO L125 PetriNetUnfolderBase]: For 2073/2073 co-relation queries the response was YES. [2023-08-26 07:02:16,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2236 conditions, 415 events. 158/415 cut-off events. For 2073/2073 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1782 event pairs, 42 based on Foata normal form. 7/422 useless extension candidates. Maximal degree in co-relation 2186. Up to 337 conditions per place. [2023-08-26 07:02:16,314 INFO L140 encePairwiseOnDemand]: 161/171 looper letters, 83 selfloop transitions, 13 changer transitions 33/129 dead transitions. [2023-08-26 07:02:16,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 129 transitions, 1469 flow [2023-08-26 07:02:16,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-26 07:02:16,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-26 07:02:16,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 550 transitions. [2023-08-26 07:02:16,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35737491877842753 [2023-08-26 07:02:16,317 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 550 transitions. [2023-08-26 07:02:16,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 550 transitions. [2023-08-26 07:02:16,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:02:16,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 550 transitions. [2023-08-26 07:02:16,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 61.111111111111114) internal successors, (550), 9 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:02:16,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 171.0) internal successors, (1710), 10 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:02:16,320 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 171.0) internal successors, (1710), 10 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:02:16,320 INFO L175 Difference]: Start difference. First operand has 139 places, 106 transitions, 1057 flow. Second operand 9 states and 550 transitions. [2023-08-26 07:02:16,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 129 transitions, 1469 flow [2023-08-26 07:02:16,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 129 transitions, 1323 flow, removed 15 selfloop flow, removed 18 redundant places. [2023-08-26 07:02:16,332 INFO L231 Difference]: Finished difference. Result has 125 places, 95 transitions, 844 flow [2023-08-26 07:02:16,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=915, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=844, PETRI_PLACES=125, PETRI_TRANSITIONS=95} [2023-08-26 07:02:16,333 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 86 predicate places. [2023-08-26 07:02:16,333 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 95 transitions, 844 flow [2023-08-26 07:02:16,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 56.22222222222222) internal successors, (506), 9 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:02:16,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:02:16,333 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:02:16,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-26 07:02:16,334 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-26 07:02:16,334 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:02:16,334 INFO L85 PathProgramCache]: Analyzing trace with hash 624535543, now seen corresponding path program 5 times [2023-08-26 07:02:16,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:02:16,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561262889] [2023-08-26 07:02:16,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:02:16,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:02:16,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:02:18,940 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:02:18,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:02:18,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561262889] [2023-08-26 07:02:18,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561262889] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:02:18,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142197199] [2023-08-26 07:02:18,941 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 07:02:18,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:02:18,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:02:18,942 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 07:02:18,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-26 07:02:19,137 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-08-26 07:02:19,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 07:02:19,140 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 45 conjunts are in the unsatisfiable core [2023-08-26 07:02:19,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:02:19,266 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-08-26 07:02:19,301 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-26 07:02:19,331 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-08-26 07:02:19,376 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-26 07:02:19,376 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 11 [2023-08-26 07:02:19,395 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 07:02:19,396 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2023-08-26 07:02:19,412 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 07:02:19,412 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2023-08-26 07:02:19,441 INFO L322 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2023-08-26 07:02:19,442 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 63 treesize of output 71 [2023-08-26 07:02:19,453 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 07:02:19,453 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 07:02:19,691 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 07:02:19,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142197199] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-26 07:02:19,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-26 07:02:19,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [19, 15] total 33 [2023-08-26 07:02:19,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039992193] [2023-08-26 07:02:19,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:02:19,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-26 07:02:19,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:02:19,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-26 07:02:19,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1012, Unknown=0, NotChecked=0, Total=1122 [2023-08-26 07:02:19,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 171 [2023-08-26 07:02:19,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 95 transitions, 844 flow. Second operand has 9 states, 9 states have (on average 54.22222222222222) internal successors, (488), 9 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:02:19,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:02:19,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 171 [2023-08-26 07:02:19,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:02:20,060 INFO L124 PetriNetUnfolderBase]: 123/330 cut-off events. [2023-08-26 07:02:20,060 INFO L125 PetriNetUnfolderBase]: For 1396/1396 co-relation queries the response was YES. [2023-08-26 07:02:20,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1764 conditions, 330 events. 123/330 cut-off events. For 1396/1396 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1322 event pairs, 31 based on Foata normal form. 22/352 useless extension candidates. Maximal degree in co-relation 1721. Up to 204 conditions per place. [2023-08-26 07:02:20,062 INFO L140 encePairwiseOnDemand]: 162/171 looper letters, 74 selfloop transitions, 11 changer transitions 68/153 dead transitions. [2023-08-26 07:02:20,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 153 transitions, 1558 flow [2023-08-26 07:02:20,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-26 07:02:20,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-26 07:02:20,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 499 transitions. [2023-08-26 07:02:20,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.364766081871345 [2023-08-26 07:02:20,063 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 499 transitions. [2023-08-26 07:02:20,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 499 transitions. [2023-08-26 07:02:20,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:02:20,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 499 transitions. [2023-08-26 07:02:20,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 62.375) internal successors, (499), 8 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:02:20,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 171.0) internal successors, (1539), 9 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:02:20,065 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 171.0) internal successors, (1539), 9 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:02:20,065 INFO L175 Difference]: Start difference. First operand has 125 places, 95 transitions, 844 flow. Second operand 8 states and 499 transitions. [2023-08-26 07:02:20,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 153 transitions, 1558 flow [2023-08-26 07:02:20,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 153 transitions, 1425 flow, removed 10 selfloop flow, removed 19 redundant places. [2023-08-26 07:02:20,071 INFO L231 Difference]: Finished difference. Result has 110 places, 83 transitions, 652 flow [2023-08-26 07:02:20,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=652, PETRI_PLACES=110, PETRI_TRANSITIONS=83} [2023-08-26 07:02:20,071 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 71 predicate places. [2023-08-26 07:02:20,072 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 83 transitions, 652 flow [2023-08-26 07:02:20,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 54.22222222222222) internal successors, (488), 9 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:02:20,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:02:20,072 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:02:20,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-26 07:02:20,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:02:20,273 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-26 07:02:20,273 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:02:20,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1726219637, now seen corresponding path program 6 times [2023-08-26 07:02:20,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:02:20,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304605145] [2023-08-26 07:02:20,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:02:20,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:02:20,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:02:20,600 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 07:02:20,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:02:20,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304605145] [2023-08-26 07:02:20,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304605145] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:02:20,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:02:20,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-26 07:02:20,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491147660] [2023-08-26 07:02:20,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:02:20,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-26 07:02:20,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:02:20,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-26 07:02:20,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-08-26 07:02:20,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 171 [2023-08-26 07:02:20,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 83 transitions, 652 flow. Second operand has 9 states, 9 states have (on average 54.22222222222222) internal successors, (488), 9 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:02:20,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:02:20,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 171 [2023-08-26 07:02:20,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:02:20,828 INFO L124 PetriNetUnfolderBase]: 62/180 cut-off events. [2023-08-26 07:02:20,828 INFO L125 PetriNetUnfolderBase]: For 831/831 co-relation queries the response was YES. [2023-08-26 07:02:20,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1013 conditions, 180 events. 62/180 cut-off events. For 831/831 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 523 event pairs, 0 based on Foata normal form. 30/210 useless extension candidates. Maximal degree in co-relation 973. Up to 59 conditions per place. [2023-08-26 07:02:20,829 INFO L140 encePairwiseOnDemand]: 164/171 looper letters, 0 selfloop transitions, 0 changer transitions 132/132 dead transitions. [2023-08-26 07:02:20,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 132 transitions, 1212 flow [2023-08-26 07:02:20,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-26 07:02:20,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-26 07:02:20,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 486 transitions. [2023-08-26 07:02:20,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35526315789473684 [2023-08-26 07:02:20,830 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 486 transitions. [2023-08-26 07:02:20,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 486 transitions. [2023-08-26 07:02:20,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:02:20,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 486 transitions. [2023-08-26 07:02:20,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 60.75) internal successors, (486), 8 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:02:20,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 171.0) internal successors, (1539), 9 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:02:20,833 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 171.0) internal successors, (1539), 9 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:02:20,833 INFO L175 Difference]: Start difference. First operand has 110 places, 83 transitions, 652 flow. Second operand 8 states and 486 transitions. [2023-08-26 07:02:20,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 132 transitions, 1212 flow [2023-08-26 07:02:20,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 132 transitions, 1066 flow, removed 52 selfloop flow, removed 10 redundant places. [2023-08-26 07:02:20,838 INFO L231 Difference]: Finished difference. Result has 102 places, 0 transitions, 0 flow [2023-08-26 07:02:20,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=102, PETRI_TRANSITIONS=0} [2023-08-26 07:02:20,839 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 63 predicate places. [2023-08-26 07:02:20,839 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 0 transitions, 0 flow [2023-08-26 07:02:20,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 54.22222222222222) internal successors, (488), 9 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:02:20,841 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (6 of 7 remaining) [2023-08-26 07:02:20,842 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (5 of 7 remaining) [2023-08-26 07:02:20,842 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-08-26 07:02:20,842 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 7 remaining) [2023-08-26 07:02:20,842 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (2 of 7 remaining) [2023-08-26 07:02:20,842 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 7 remaining) [2023-08-26 07:02:20,842 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (0 of 7 remaining) [2023-08-26 07:02:20,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-26 07:02:20,843 INFO L445 BasicCegarLoop]: Path program histogram: [7, 6, 6, 6, 2, 2, 1, 1, 1] [2023-08-26 07:02:20,847 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 07:02:20,847 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 07:02:20,849 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 07:02:20 BasicIcfg [2023-08-26 07:02:20,849 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 07:02:20,850 INFO L158 Benchmark]: Toolchain (without parser) took 184385.37ms. Allocated memory was 417.3MB in the beginning and 12.4GB in the end (delta: 12.0GB). Free memory was 391.6MB in the beginning and 5.9GB in the end (delta: -5.5GB). Peak memory consumption was 6.5GB. Max. memory is 16.0GB. [2023-08-26 07:02:20,850 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 417.3MB. Free memory was 395.0MB in the beginning and 394.8MB in the end (delta: 157.3kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 07:02:20,850 INFO L158 Benchmark]: CACSL2BoogieTranslator took 659.90ms. Allocated memory is still 417.3MB. Free memory was 391.6MB in the beginning and 363.1MB in the end (delta: 28.5MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-08-26 07:02:20,850 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.41ms. Allocated memory is still 417.3MB. Free memory was 363.1MB in the beginning and 360.3MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-26 07:02:20,851 INFO L158 Benchmark]: Boogie Preprocessor took 49.64ms. Allocated memory is still 417.3MB. Free memory was 360.3MB in the beginning and 358.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 07:02:20,851 INFO L158 Benchmark]: RCFGBuilder took 395.21ms. Allocated memory is still 417.3MB. Free memory was 358.9MB in the beginning and 342.1MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-26 07:02:20,851 INFO L158 Benchmark]: TraceAbstraction took 183198.16ms. Allocated memory was 417.3MB in the beginning and 12.4GB in the end (delta: 12.0GB). Free memory was 341.4MB in the beginning and 5.9GB in the end (delta: -5.5GB). Peak memory consumption was 6.4GB. Max. memory is 16.0GB. [2023-08-26 07:02:20,852 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 417.3MB. Free memory was 395.0MB in the beginning and 394.8MB in the end (delta: 157.3kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 659.90ms. Allocated memory is still 417.3MB. Free memory was 391.6MB in the beginning and 363.1MB in the end (delta: 28.5MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 75.41ms. Allocated memory is still 417.3MB. Free memory was 363.1MB in the beginning and 360.3MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 49.64ms. Allocated memory is still 417.3MB. Free memory was 360.3MB in the beginning and 358.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 395.21ms. Allocated memory is still 417.3MB. Free memory was 358.9MB in the beginning and 342.1MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 183198.16ms. Allocated memory was 417.3MB in the beginning and 12.4GB in the end (delta: 12.0GB). Free memory was 341.4MB in the beginning and 5.9GB in the end (delta: -5.5GB). Peak memory consumption was 6.4GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 249]: Unsoundness Warning unspecified type, defaulting to int C: short [249] - GenericResultAtLocation [Line: 249]: Unsoundness Warning unspecified type, defaulting to int C: short [249] - GenericResultAtLocation [Line: 741]: Unsoundness Warning unspecified type, defaulting to int C: unsigned short [741] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.9s, 98 PlacesBefore, 39 PlacesAfterwards, 98 TransitionsBefore, 36 TransitionsAfterwards, 2088 CoEnabledTransitionPairs, 6 FixpointIterations, 28 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 3 ConcurrentYvCompositions, 3 ChoiceCompositions, 72 TotalNumberOfCompositions, 8674 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2415, independent: 2019, independent conditional: 0, independent unconditional: 2019, dependent: 396, dependent conditional: 0, dependent unconditional: 396, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1009, independent: 950, independent conditional: 0, independent unconditional: 950, dependent: 59, dependent conditional: 0, dependent unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2415, independent: 1069, independent conditional: 0, independent unconditional: 1069, dependent: 337, dependent conditional: 0, dependent unconditional: 337, unknown: 1009, unknown conditional: 0, unknown unconditional: 1009] , Statistics on independence cache: Total cache size (in pairs): 113, Positive cache size: 77, Positive conditional cache size: 0, Positive unconditional cache size: 77, Negative cache size: 36, Negative conditional cache size: 0, Negative unconditional cache size: 36, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 943]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 943]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 931]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 931]: there are no data races For all program executions holds that there are no data races at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 133 locations, 7 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: 183.1s, OverallIterations: 32, TraceHistogramMax: 10, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 62.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 6 mSolverCounterUnknown, 1918 SdHoareTripleChecker+Valid, 22.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1918 mSDsluCounter, 159 SdHoareTripleChecker+Invalid, 21.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1343 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11764 IncrementalHoareTripleChecker+Invalid, 13113 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1343 mSolverCounterUnsat, 159 mSDtfsCounter, 11764 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 728 GetRequests, 301 SyntacticMatches, 12 SemanticMatches, 415 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1776 ImplicationChecksByTransitivity, 63.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14585occurred in iteration=20, InterpolantAutomatonStates: 315, 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, 0.7s SatisfiabilityAnalysisTime, 114.8s InterpolantComputationTime, 1022 NumberOfCodeBlocks, 1012 NumberOfCodeBlocksAsserted, 46 NumberOfCheckSat, 1124 ConstructedInterpolants, 19 QuantifiedInterpolants, 20801 SizeOfPredicates, 21 NumberOfNonLiveVariables, 1204 ConjunctsInSsa, 268 ConjunctsInUnsatCore, 45 InterpolantComputations, 30 PerfectInterpolantSequences, 1572/2033 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-26 07:02:21,002 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...