./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-data-race.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ebedbc62bd44b0c214a81c07c6f99e850a5d96675b77716f8547d1b39e8b2cf8 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 09:49:27,416 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 09:49:27,491 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-13 09:49:27,498 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 09:49:27,500 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 09:49:27,531 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 09:49:27,532 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 09:49:27,532 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 09:49:27,533 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 09:49:27,533 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 09:49:27,534 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 09:49:27,534 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 09:49:27,534 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 09:49:27,535 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 09:49:27,535 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 09:49:27,536 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 09:49:27,536 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 09:49:27,536 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 09:49:27,537 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 09:49:27,537 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 09:49:27,537 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 09:49:27,538 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 09:49:27,538 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-13 09:49:27,539 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 09:49:27,539 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 09:49:27,540 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 09:49:27,540 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 09:49:27,540 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 09:49:27,541 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 09:49:27,541 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 09:49:27,541 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 09:49:27,542 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 09:49:27,542 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 09:49:27,543 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 09:49:27,543 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 09:49:27,543 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 09:49:27,544 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 09:49:27,544 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 09:49:27,544 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 09:49:27,545 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 09:49:27,545 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 09:49:27,545 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebedbc62bd44b0c214a81c07c6f99e850a5d96675b77716f8547d1b39e8b2cf8 [2024-10-13 09:49:27,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 09:49:27,842 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 09:49:27,845 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 09:49:27,846 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 09:49:27,847 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 09:49:27,848 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i [2024-10-13 09:49:29,352 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 09:49:29,623 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 09:49:29,624 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i [2024-10-13 09:49:29,641 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/226d21617/2e11aa5c650c40759c37aa7d85bb6951/FLAG62336fd93 [2024-10-13 09:49:29,664 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/226d21617/2e11aa5c650c40759c37aa7d85bb6951 [2024-10-13 09:49:29,668 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 09:49:29,674 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 09:49:29,675 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 09:49:29,675 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 09:49:29,680 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 09:49:29,681 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:49:29" (1/1) ... [2024-10-13 09:49:29,682 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48565492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:49:29, skipping insertion in model container [2024-10-13 09:49:29,682 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:49:29" (1/1) ... [2024-10-13 09:49:29,738 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 09:49:30,256 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 09:49:30,286 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 09:49:30,353 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 09:49:30,420 INFO L204 MainTranslator]: Completed translation [2024-10-13 09:49:30,421 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:49:30 WrapperNode [2024-10-13 09:49:30,421 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 09:49:30,422 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 09:49:30,422 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 09:49:30,423 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 09:49:30,429 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:49:30" (1/1) ... [2024-10-13 09:49:30,446 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:49:30" (1/1) ... [2024-10-13 09:49:30,473 INFO L138 Inliner]: procedures = 262, calls = 10, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 97 [2024-10-13 09:49:30,474 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 09:49:30,476 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 09:49:30,476 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 09:49:30,476 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 09:49:30,484 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:49:30" (1/1) ... [2024-10-13 09:49:30,484 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:49:30" (1/1) ... [2024-10-13 09:49:30,488 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:49:30" (1/1) ... [2024-10-13 09:49:30,489 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:49:30" (1/1) ... [2024-10-13 09:49:30,500 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:49:30" (1/1) ... [2024-10-13 09:49:30,504 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:49:30" (1/1) ... [2024-10-13 09:49:30,506 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:49:30" (1/1) ... [2024-10-13 09:49:30,508 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:49:30" (1/1) ... [2024-10-13 09:49:30,510 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 09:49:30,513 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 09:49:30,513 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 09:49:30,513 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 09:49:30,514 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:49:30" (1/1) ... [2024-10-13 09:49:30,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 09:49:30,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:49:30,552 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 09:49:30,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 09:49:30,600 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-13 09:49:30,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-13 09:49:30,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-13 09:49:30,601 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-13 09:49:30,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 09:49:30,602 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-13 09:49:30,602 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-13 09:49:30,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 09:49:30,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 09:49:30,604 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 09:49:30,728 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 09:49:30,729 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 09:49:30,960 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 09:49:30,961 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 09:49:30,995 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 09:49:30,996 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-13 09:49:30,996 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:49:30 BoogieIcfgContainer [2024-10-13 09:49:30,996 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 09:49:31,001 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 09:49:31,001 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 09:49:31,006 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 09:49:31,006 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:49:29" (1/3) ... [2024-10-13 09:49:31,007 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19937cbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:49:31, skipping insertion in model container [2024-10-13 09:49:31,007 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:49:30" (2/3) ... [2024-10-13 09:49:31,008 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19937cbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:49:31, skipping insertion in model container [2024-10-13 09:49:31,008 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:49:30" (3/3) ... [2024-10-13 09:49:31,009 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_02-funloop_norace.i [2024-10-13 09:49:31,028 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 09:49:31,028 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-10-13 09:49:31,029 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 09:49:31,096 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 09:49:31,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 103 transitions, 210 flow [2024-10-13 09:49:31,178 INFO L124 PetriNetUnfolderBase]: 6/102 cut-off events. [2024-10-13 09:49:31,179 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 09:49:31,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 102 events. 6/102 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 126 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 80. Up to 2 conditions per place. [2024-10-13 09:49:31,187 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 103 transitions, 210 flow [2024-10-13 09:49:31,192 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 102 transitions, 207 flow [2024-10-13 09:49:31,200 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 09:49:31,207 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@24ef5996, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 09:49:31,207 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-10-13 09:49:31,225 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 09:49:31,225 INFO L124 PetriNetUnfolderBase]: 4/60 cut-off events. [2024-10-13 09:49:31,225 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 09:49:31,225 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:49:31,226 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:49:31,227 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-13 09:49:31,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:49:31,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1912085395, now seen corresponding path program 1 times [2024-10-13 09:49:31,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:49:31,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461285398] [2024-10-13 09:49:31,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:49:31,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:49:31,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:49:31,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:49:31,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:49:31,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461285398] [2024-10-13 09:49:31,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461285398] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:49:31,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:49:31,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 09:49:31,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020522402] [2024-10-13 09:49:31,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:49:31,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:49:31,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:49:31,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:49:31,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:49:31,595 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 103 [2024-10-13 09:49:31,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 102 transitions, 207 flow. Second operand has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:49:31,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:49:31,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 103 [2024-10-13 09:49:31,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:49:31,671 INFO L124 PetriNetUnfolderBase]: 13/187 cut-off events. [2024-10-13 09:49:31,671 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-13 09:49:31,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220 conditions, 187 events. 13/187 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 398 event pairs, 6 based on Foata normal form. 10/183 useless extension candidates. Maximal degree in co-relation 183. Up to 28 conditions per place. [2024-10-13 09:49:31,677 INFO L140 encePairwiseOnDemand]: 97/103 looper letters, 10 selfloop transitions, 2 changer transitions 0/100 dead transitions. [2024-10-13 09:49:31,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 100 transitions, 227 flow [2024-10-13 09:49:31,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:49:31,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:49:31,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 284 transitions. [2024-10-13 09:49:31,690 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.919093851132686 [2024-10-13 09:49:31,692 INFO L175 Difference]: Start difference. First operand has 100 places, 102 transitions, 207 flow. Second operand 3 states and 284 transitions. [2024-10-13 09:49:31,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 100 transitions, 227 flow [2024-10-13 09:49:31,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 100 transitions, 226 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 09:49:31,706 INFO L231 Difference]: Finished difference. Result has 102 places, 100 transitions, 212 flow [2024-10-13 09:49:31,708 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=212, PETRI_PLACES=102, PETRI_TRANSITIONS=100} [2024-10-13 09:49:31,713 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 2 predicate places. [2024-10-13 09:49:31,713 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 100 transitions, 212 flow [2024-10-13 09:49:31,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:49:31,714 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:49:31,714 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:49:31,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 09:49:31,714 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-13 09:49:31,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:49:31,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1916828267, now seen corresponding path program 1 times [2024-10-13 09:49:31,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:49:31,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762163319] [2024-10-13 09:49:31,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:49:31,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:49:31,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:49:31,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:49:31,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:49:31,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762163319] [2024-10-13 09:49:31,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762163319] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:49:31,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807374154] [2024-10-13 09:49:31,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:49:31,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:49:31,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:49:31,951 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) [2024-10-13 09:49:31,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 09:49:32,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:49:32,062 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 09:49:32,071 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:49:32,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:49:32,145 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 09:49:32,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:49:32,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807374154] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 09:49:32,203 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 09:49:32,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-13 09:49:32,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603568617] [2024-10-13 09:49:32,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 09:49:32,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 09:49:32,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:49:32,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 09:49:32,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-13 09:49:32,241 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 103 [2024-10-13 09:49:32,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 100 transitions, 212 flow. Second operand has 10 states, 10 states have (on average 88.0) internal successors, (880), 10 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:49:32,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:49:32,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 103 [2024-10-13 09:49:32,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:49:32,437 INFO L124 PetriNetUnfolderBase]: 13/194 cut-off events. [2024-10-13 09:49:32,437 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-13 09:49:32,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 194 events. 13/194 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 392 event pairs, 6 based on Foata normal form. 2/182 useless extension candidates. Maximal degree in co-relation 221. Up to 28 conditions per place. [2024-10-13 09:49:32,443 INFO L140 encePairwiseOnDemand]: 97/103 looper letters, 14 selfloop transitions, 9 changer transitions 0/108 dead transitions. [2024-10-13 09:49:32,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 108 transitions, 276 flow [2024-10-13 09:49:32,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 09:49:32,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 09:49:32,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 799 transitions. [2024-10-13 09:49:32,452 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8619201725997843 [2024-10-13 09:49:32,454 INFO L175 Difference]: Start difference. First operand has 102 places, 100 transitions, 212 flow. Second operand 9 states and 799 transitions. [2024-10-13 09:49:32,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 108 transitions, 276 flow [2024-10-13 09:49:32,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 108 transitions, 274 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 09:49:32,458 INFO L231 Difference]: Finished difference. Result has 112 places, 106 transitions, 260 flow [2024-10-13 09:49:32,458 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=260, PETRI_PLACES=112, PETRI_TRANSITIONS=106} [2024-10-13 09:49:32,459 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 12 predicate places. [2024-10-13 09:49:32,460 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 106 transitions, 260 flow [2024-10-13 09:49:32,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 88.0) internal successors, (880), 10 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:49:32,461 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:49:32,462 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:49:32,480 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 09:49:32,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:49:32,667 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-13 09:49:32,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:49:32,668 INFO L85 PathProgramCache]: Analyzing trace with hash -402346859, now seen corresponding path program 2 times [2024-10-13 09:49:32,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:49:32,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827785430] [2024-10-13 09:49:32,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:49:32,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:49:32,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:49:32,917 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:49:32,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:49:32,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827785430] [2024-10-13 09:49:32,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827785430] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:49:32,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064731905] [2024-10-13 09:49:32,917 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 09:49:32,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:49:32,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:49:32,921 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) [2024-10-13 09:49:32,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 09:49:32,998 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 09:49:32,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 09:49:33,000 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-13 09:49:33,003 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:49:33,044 INFO L378 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 11 treesize of output 7 [2024-10-13 09:49:33,068 INFO L378 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 21 treesize of output 20 [2024-10-13 09:49:33,108 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 09:49:33,108 INFO L378 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 30 treesize of output 32 [2024-10-13 09:49:33,162 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 09:49:33,163 INFO L378 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 39 treesize of output 44 [2024-10-13 09:49:33,200 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-13 09:49:33,201 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 09:49:33,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064731905] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:49:33,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 09:49:33,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2024-10-13 09:49:33,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950907621] [2024-10-13 09:49:33,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:49:33,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 09:49:33,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:49:33,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 09:49:33,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-10-13 09:49:33,365 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 103 [2024-10-13 09:49:33,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 106 transitions, 260 flow. Second operand has 6 states, 6 states have (on average 78.5) internal successors, (471), 6 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:49:33,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:49:33,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 103 [2024-10-13 09:49:33,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:49:33,591 INFO L124 PetriNetUnfolderBase]: 150/781 cut-off events. [2024-10-13 09:49:33,592 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-10-13 09:49:33,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1109 conditions, 781 events. 150/781 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 4721 event pairs, 62 based on Foata normal form. 0/722 useless extension candidates. Maximal degree in co-relation 1057. Up to 240 conditions per place. [2024-10-13 09:49:33,597 INFO L140 encePairwiseOnDemand]: 92/103 looper letters, 30 selfloop transitions, 22 changer transitions 0/135 dead transitions. [2024-10-13 09:49:33,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 135 transitions, 422 flow [2024-10-13 09:49:33,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 09:49:33,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 09:49:33,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 515 transitions. [2024-10-13 09:49:33,601 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2024-10-13 09:49:33,601 INFO L175 Difference]: Start difference. First operand has 112 places, 106 transitions, 260 flow. Second operand 6 states and 515 transitions. [2024-10-13 09:49:33,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 135 transitions, 422 flow [2024-10-13 09:49:33,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 135 transitions, 416 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-13 09:49:33,607 INFO L231 Difference]: Finished difference. Result has 121 places, 127 transitions, 404 flow [2024-10-13 09:49:33,607 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=404, PETRI_PLACES=121, PETRI_TRANSITIONS=127} [2024-10-13 09:49:33,608 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 21 predicate places. [2024-10-13 09:49:33,608 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 127 transitions, 404 flow [2024-10-13 09:49:33,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 78.5) internal successors, (471), 6 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:49:33,609 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:49:33,610 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:49:33,628 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 09:49:33,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-10-13 09:49:33,814 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-13 09:49:33,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:49:33,814 INFO L85 PathProgramCache]: Analyzing trace with hash 582346349, now seen corresponding path program 1 times [2024-10-13 09:49:33,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:49:33,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337287300] [2024-10-13 09:49:33,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:49:33,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:49:33,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:49:33,972 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:49:33,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:49:33,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337287300] [2024-10-13 09:49:33,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337287300] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:49:33,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577978979] [2024-10-13 09:49:33,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:49:33,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:49:33,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:49:33,975 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) [2024-10-13 09:49:33,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 09:49:34,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:49:34,046 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 09:49:34,047 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:49:34,096 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:49:34,096 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 09:49:34,200 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:49:34,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577978979] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 09:49:34,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 09:49:34,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-10-13 09:49:34,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927685361] [2024-10-13 09:49:34,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 09:49:34,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-13 09:49:34,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:49:34,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-13 09:49:34,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-10-13 09:49:34,251 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 103 [2024-10-13 09:49:34,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 127 transitions, 404 flow. Second operand has 18 states, 18 states have (on average 88.0) internal successors, (1584), 18 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:49:34,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:49:34,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 103 [2024-10-13 09:49:34,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:49:34,530 INFO L124 PetriNetUnfolderBase]: 61/527 cut-off events. [2024-10-13 09:49:34,530 INFO L125 PetriNetUnfolderBase]: For 50/53 co-relation queries the response was YES. [2024-10-13 09:49:34,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 822 conditions, 527 events. 61/527 cut-off events. For 50/53 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2301 event pairs, 11 based on Foata normal form. 4/497 useless extension candidates. Maximal degree in co-relation 693. Up to 63 conditions per place. [2024-10-13 09:49:34,536 INFO L140 encePairwiseOnDemand]: 97/103 looper letters, 18 selfloop transitions, 21 changer transitions 0/145 dead transitions. [2024-10-13 09:49:34,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 145 transitions, 570 flow [2024-10-13 09:49:34,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-13 09:49:34,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-13 09:49:34,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1849 transitions. [2024-10-13 09:49:34,542 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8548312528895053 [2024-10-13 09:49:34,542 INFO L175 Difference]: Start difference. First operand has 121 places, 127 transitions, 404 flow. Second operand 21 states and 1849 transitions. [2024-10-13 09:49:34,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 145 transitions, 570 flow [2024-10-13 09:49:34,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 145 transitions, 570 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 09:49:34,551 INFO L231 Difference]: Finished difference. Result has 146 places, 140 transitions, 534 flow [2024-10-13 09:49:34,554 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=534, PETRI_PLACES=146, PETRI_TRANSITIONS=140} [2024-10-13 09:49:34,555 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 46 predicate places. [2024-10-13 09:49:34,555 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 140 transitions, 534 flow [2024-10-13 09:49:34,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 88.0) internal successors, (1584), 18 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:49:34,556 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:49:34,556 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:49:34,575 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 09:49:34,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:49:34,757 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-13 09:49:34,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:49:34,758 INFO L85 PathProgramCache]: Analyzing trace with hash -719195027, now seen corresponding path program 2 times [2024-10-13 09:49:34,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:49:34,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830570552] [2024-10-13 09:49:34,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:49:34,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:49:34,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:49:35,086 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:49:35,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:49:35,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830570552] [2024-10-13 09:49:35,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830570552] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:49:35,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657431686] [2024-10-13 09:49:35,089 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 09:49:35,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:49:35,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:49:35,092 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) [2024-10-13 09:49:35,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 09:49:35,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 09:49:35,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 09:49:35,165 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-13 09:49:35,167 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:49:35,173 INFO L378 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 11 treesize of output 7 [2024-10-13 09:49:35,191 INFO L378 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 21 treesize of output 20 [2024-10-13 09:49:35,218 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 09:49:35,218 INFO L378 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 30 treesize of output 32 [2024-10-13 09:49:35,254 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 09:49:35,254 INFO L378 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 39 treesize of output 44 [2024-10-13 09:49:35,287 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-10-13 09:49:35,288 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 09:49:35,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657431686] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:49:35,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 09:49:35,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17] total 21 [2024-10-13 09:49:35,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539983622] [2024-10-13 09:49:35,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:49:35,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 09:49:35,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:49:35,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 09:49:35,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2024-10-13 09:49:35,428 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 103 [2024-10-13 09:49:35,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 140 transitions, 534 flow. Second operand has 6 states, 6 states have (on average 78.5) internal successors, (471), 6 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:49:35,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:49:35,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 103 [2024-10-13 09:49:35,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:49:35,660 INFO L124 PetriNetUnfolderBase]: 206/1039 cut-off events. [2024-10-13 09:49:35,661 INFO L125 PetriNetUnfolderBase]: For 226/246 co-relation queries the response was YES. [2024-10-13 09:49:35,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1827 conditions, 1039 events. 206/1039 cut-off events. For 226/246 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 6572 event pairs, 62 based on Foata normal form. 5/982 useless extension candidates. Maximal degree in co-relation 1691. Up to 330 conditions per place. [2024-10-13 09:49:35,668 INFO L140 encePairwiseOnDemand]: 92/103 looper letters, 47 selfloop transitions, 30 changer transitions 0/177 dead transitions. [2024-10-13 09:49:35,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 177 transitions, 804 flow [2024-10-13 09:49:35,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 09:49:35,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 09:49:35,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 515 transitions. [2024-10-13 09:49:35,670 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2024-10-13 09:49:35,670 INFO L175 Difference]: Start difference. First operand has 146 places, 140 transitions, 534 flow. Second operand 6 states and 515 transitions. [2024-10-13 09:49:35,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 177 transitions, 804 flow [2024-10-13 09:49:35,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 177 transitions, 780 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-10-13 09:49:35,680 INFO L231 Difference]: Finished difference. Result has 150 places, 169 transitions, 760 flow [2024-10-13 09:49:35,681 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=760, PETRI_PLACES=150, PETRI_TRANSITIONS=169} [2024-10-13 09:49:35,683 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 50 predicate places. [2024-10-13 09:49:35,683 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 169 transitions, 760 flow [2024-10-13 09:49:35,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 78.5) internal successors, (471), 6 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:49:35,683 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:49:35,684 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:49:35,702 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-13 09:49:35,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:49:35,885 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-13 09:49:35,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:49:35,885 INFO L85 PathProgramCache]: Analyzing trace with hash -794913766, now seen corresponding path program 1 times [2024-10-13 09:49:35,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:49:35,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456517368] [2024-10-13 09:49:35,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:49:35,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:49:35,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:49:36,198 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:49:36,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:49:36,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456517368] [2024-10-13 09:49:36,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456517368] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:49:36,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191583109] [2024-10-13 09:49:36,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:49:36,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:49:36,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:49:36,201 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) [2024-10-13 09:49:36,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 09:49:36,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:49:36,295 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-13 09:49:36,297 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:49:36,405 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:49:36,406 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 09:49:36,632 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:49:36,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191583109] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 09:49:36,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 09:49:36,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2024-10-13 09:49:36,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248470180] [2024-10-13 09:49:36,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 09:49:36,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-13 09:49:36,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:49:36,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-13 09:49:36,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-10-13 09:49:36,672 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 103 [2024-10-13 09:49:36,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 169 transitions, 760 flow. Second operand has 23 states, 23 states have (on average 88.08695652173913) internal successors, (2026), 23 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:49:36,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:49:36,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 103 [2024-10-13 09:49:36,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:49:37,087 INFO L124 PetriNetUnfolderBase]: 117/787 cut-off events. [2024-10-13 09:49:37,087 INFO L125 PetriNetUnfolderBase]: For 345/358 co-relation queries the response was YES. [2024-10-13 09:49:37,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1526 conditions, 787 events. 117/787 cut-off events. For 345/358 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 4340 event pairs, 14 based on Foata normal form. 8/758 useless extension candidates. Maximal degree in co-relation 1309. Up to 84 conditions per place. [2024-10-13 09:49:37,095 INFO L140 encePairwiseOnDemand]: 97/103 looper letters, 21 selfloop transitions, 30 changer transitions 0/186 dead transitions. [2024-10-13 09:49:37,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 186 transitions, 984 flow [2024-10-13 09:49:37,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-10-13 09:49:37,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-10-13 09:49:37,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2634 transitions. [2024-10-13 09:49:37,101 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8524271844660194 [2024-10-13 09:49:37,102 INFO L175 Difference]: Start difference. First operand has 150 places, 169 transitions, 760 flow. Second operand 30 states and 2634 transitions. [2024-10-13 09:49:37,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 186 transitions, 984 flow [2024-10-13 09:49:37,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 186 transitions, 984 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 09:49:37,110 INFO L231 Difference]: Finished difference. Result has 183 places, 179 transitions, 912 flow [2024-10-13 09:49:37,111 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=912, PETRI_PLACES=183, PETRI_TRANSITIONS=179} [2024-10-13 09:49:37,111 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 83 predicate places. [2024-10-13 09:49:37,112 INFO L471 AbstractCegarLoop]: Abstraction has has 183 places, 179 transitions, 912 flow [2024-10-13 09:49:37,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 88.08695652173913) internal successors, (2026), 23 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:49:37,113 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:49:37,113 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:49:37,132 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-13 09:49:37,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:49:37,318 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-13 09:49:37,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:49:37,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1201323278, now seen corresponding path program 2 times [2024-10-13 09:49:37,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:49:37,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924384527] [2024-10-13 09:49:37,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:49:37,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:49:37,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:49:37,810 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-10-13 09:49:37,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:49:37,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924384527] [2024-10-13 09:49:37,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924384527] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:49:37,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:49:37,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 09:49:37,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191134775] [2024-10-13 09:49:37,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:49:37,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 09:49:37,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:49:37,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 09:49:37,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-13 09:49:37,896 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 103 [2024-10-13 09:49:37,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 179 transitions, 912 flow. Second operand has 6 states, 6 states have (on average 73.5) internal successors, (441), 6 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:49:37,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:49:37,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 103 [2024-10-13 09:49:37,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:49:38,286 INFO L124 PetriNetUnfolderBase]: 422/1594 cut-off events. [2024-10-13 09:49:38,287 INFO L125 PetriNetUnfolderBase]: For 1019/1061 co-relation queries the response was YES. [2024-10-13 09:49:38,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3604 conditions, 1594 events. 422/1594 cut-off events. For 1019/1061 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 10537 event pairs, 107 based on Foata normal form. 12/1515 useless extension candidates. Maximal degree in co-relation 3386. Up to 718 conditions per place. [2024-10-13 09:49:38,299 INFO L140 encePairwiseOnDemand]: 88/103 looper letters, 76 selfloop transitions, 57 changer transitions 0/234 dead transitions. [2024-10-13 09:49:38,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 234 transitions, 1422 flow [2024-10-13 09:49:38,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 09:49:38,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 09:49:38,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 501 transitions. [2024-10-13 09:49:38,301 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8106796116504854 [2024-10-13 09:49:38,301 INFO L175 Difference]: Start difference. First operand has 183 places, 179 transitions, 912 flow. Second operand 6 states and 501 transitions. [2024-10-13 09:49:38,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 234 transitions, 1422 flow [2024-10-13 09:49:38,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 234 transitions, 1376 flow, removed 5 selfloop flow, removed 18 redundant places. [2024-10-13 09:49:38,312 INFO L231 Difference]: Finished difference. Result has 175 places, 226 transitions, 1364 flow [2024-10-13 09:49:38,313 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=866, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1364, PETRI_PLACES=175, PETRI_TRANSITIONS=226} [2024-10-13 09:49:38,314 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 75 predicate places. [2024-10-13 09:49:38,314 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 226 transitions, 1364 flow [2024-10-13 09:49:38,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.5) internal successors, (441), 6 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:49:38,315 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:49:38,315 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:49:38,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 09:49:38,315 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-13 09:49:38,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:49:38,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1957154307, now seen corresponding path program 1 times [2024-10-13 09:49:38,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:49:38,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220181171] [2024-10-13 09:49:38,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:49:38,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:49:38,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:49:38,671 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-10-13 09:49:38,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:49:38,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220181171] [2024-10-13 09:49:38,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220181171] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:49:38,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:49:38,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 09:49:38,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511220948] [2024-10-13 09:49:38,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:49:38,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 09:49:38,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:49:38,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 09:49:38,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-13 09:49:38,769 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 103 [2024-10-13 09:49:38,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 226 transitions, 1364 flow. Second operand has 6 states, 6 states have (on average 73.5) internal successors, (441), 6 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:49:38,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:49:38,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 103 [2024-10-13 09:49:38,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:49:39,247 INFO L124 PetriNetUnfolderBase]: 542/2034 cut-off events. [2024-10-13 09:49:39,247 INFO L125 PetriNetUnfolderBase]: For 2328/2389 co-relation queries the response was YES. [2024-10-13 09:49:39,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5201 conditions, 2034 events. 542/2034 cut-off events. For 2328/2389 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 14585 event pairs, 113 based on Foata normal form. 13/1961 useless extension candidates. Maximal degree in co-relation 5000. Up to 894 conditions per place. [2024-10-13 09:49:39,265 INFO L140 encePairwiseOnDemand]: 88/103 looper letters, 113 selfloop transitions, 71 changer transitions 0/287 dead transitions. [2024-10-13 09:49:39,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 287 transitions, 2086 flow [2024-10-13 09:49:39,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 09:49:39,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 09:49:39,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 501 transitions. [2024-10-13 09:49:39,268 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8106796116504854 [2024-10-13 09:49:39,268 INFO L175 Difference]: Start difference. First operand has 175 places, 226 transitions, 1364 flow. Second operand 6 states and 501 transitions. [2024-10-13 09:49:39,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 287 transitions, 2086 flow [2024-10-13 09:49:39,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 287 transitions, 2022 flow, removed 32 selfloop flow, removed 0 redundant places. [2024-10-13 09:49:39,288 INFO L231 Difference]: Finished difference. Result has 185 places, 279 transitions, 1976 flow [2024-10-13 09:49:39,288 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=1306, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1976, PETRI_PLACES=185, PETRI_TRANSITIONS=279} [2024-10-13 09:49:39,289 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 85 predicate places. [2024-10-13 09:49:39,289 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 279 transitions, 1976 flow [2024-10-13 09:49:39,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.5) internal successors, (441), 6 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:49:39,289 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:49:39,290 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:49:39,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 09:49:39,290 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-13 09:49:39,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:49:39,290 INFO L85 PathProgramCache]: Analyzing trace with hash -794470337, now seen corresponding path program 1 times [2024-10-13 09:49:39,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:49:39,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531324271] [2024-10-13 09:49:39,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:49:39,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:49:39,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:49:40,191 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2024-10-13 09:49:40,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:49:40,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531324271] [2024-10-13 09:49:40,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531324271] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:49:40,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765520525] [2024-10-13 09:49:40,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:49:40,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:49:40,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:49:40,195 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) [2024-10-13 09:49:40,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 09:49:40,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:49:40,309 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-13 09:49:40,313 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:49:40,475 INFO L378 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 13 treesize of output 9 [2024-10-13 09:49:40,586 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-10-13 09:49:40,586 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 09:49:40,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765520525] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:49:40,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 09:49:40,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2024-10-13 09:49:40,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657482245] [2024-10-13 09:49:40,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:49:40,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 09:49:40,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:49:40,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 09:49:40,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-10-13 09:49:40,885 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 103 [2024-10-13 09:49:40,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 279 transitions, 1976 flow. Second operand has 10 states, 10 states have (on average 74.6) internal successors, (746), 10 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:49:40,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:49:40,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 103 [2024-10-13 09:49:40,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:49:41,995 INFO L124 PetriNetUnfolderBase]: 1065/4135 cut-off events. [2024-10-13 09:49:41,996 INFO L125 PetriNetUnfolderBase]: For 5551/5682 co-relation queries the response was YES. [2024-10-13 09:49:42,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11496 conditions, 4135 events. 1065/4135 cut-off events. For 5551/5682 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 33555 event pairs, 161 based on Foata normal form. 43/4152 useless extension candidates. Maximal degree in co-relation 11278. Up to 580 conditions per place. [2024-10-13 09:49:42,038 INFO L140 encePairwiseOnDemand]: 87/103 looper letters, 64 selfloop transitions, 16 changer transitions 6/338 dead transitions. [2024-10-13 09:49:42,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 338 transitions, 2266 flow [2024-10-13 09:49:42,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 09:49:42,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 09:49:42,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 819 transitions. [2024-10-13 09:49:42,041 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7951456310679612 [2024-10-13 09:49:42,042 INFO L175 Difference]: Start difference. First operand has 185 places, 279 transitions, 1976 flow. Second operand 10 states and 819 transitions. [2024-10-13 09:49:42,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 338 transitions, 2266 flow [2024-10-13 09:49:42,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 338 transitions, 2184 flow, removed 41 selfloop flow, removed 0 redundant places. [2024-10-13 09:49:42,100 INFO L231 Difference]: Finished difference. Result has 201 places, 294 transitions, 2014 flow [2024-10-13 09:49:42,101 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=1894, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2014, PETRI_PLACES=201, PETRI_TRANSITIONS=294} [2024-10-13 09:49:42,102 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 101 predicate places. [2024-10-13 09:49:42,103 INFO L471 AbstractCegarLoop]: Abstraction has has 201 places, 294 transitions, 2014 flow [2024-10-13 09:49:42,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 74.6) internal successors, (746), 10 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:49:42,104 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:49:42,104 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:49:42,125 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-13 09:49:42,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:49:42,310 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-13 09:49:42,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:49:42,311 INFO L85 PathProgramCache]: Analyzing trace with hash 115991071, now seen corresponding path program 2 times [2024-10-13 09:49:42,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:49:42,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680657470] [2024-10-13 09:49:42,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:49:42,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:49:42,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:49:43,171 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2024-10-13 09:49:43,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:49:43,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680657470] [2024-10-13 09:49:43,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680657470] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:49:43,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377077831] [2024-10-13 09:49:43,172 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 09:49:43,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:49:43,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:49:43,174 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) [2024-10-13 09:49:43,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-13 09:49:43,270 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 09:49:43,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 09:49:43,272 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-13 09:49:43,277 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:49:43,439 INFO L378 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 13 treesize of output 9 [2024-10-13 09:49:43,577 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-10-13 09:49:43,578 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 09:49:43,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377077831] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:49:43,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 09:49:43,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2024-10-13 09:49:43,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491157872] [2024-10-13 09:49:43,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:49:43,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 09:49:43,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:49:43,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 09:49:43,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-10-13 09:49:43,884 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 103 [2024-10-13 09:49:43,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 294 transitions, 2014 flow. Second operand has 10 states, 10 states have (on average 74.6) internal successors, (746), 10 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:49:43,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:49:43,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 103 [2024-10-13 09:49:43,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:49:45,703 INFO L124 PetriNetUnfolderBase]: 2043/7549 cut-off events. [2024-10-13 09:49:45,703 INFO L125 PetriNetUnfolderBase]: For 10843/11111 co-relation queries the response was YES. [2024-10-13 09:49:45,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22321 conditions, 7549 events. 2043/7549 cut-off events. For 10843/11111 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 68238 event pairs, 280 based on Foata normal form. 87/7585 useless extension candidates. Maximal degree in co-relation 22094. Up to 1204 conditions per place. [2024-10-13 09:49:45,775 INFO L140 encePairwiseOnDemand]: 88/103 looper letters, 109 selfloop transitions, 21 changer transitions 3/385 dead transitions. [2024-10-13 09:49:45,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 385 transitions, 2680 flow [2024-10-13 09:49:45,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 09:49:45,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 09:49:45,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 818 transitions. [2024-10-13 09:49:45,779 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7941747572815534 [2024-10-13 09:49:45,779 INFO L175 Difference]: Start difference. First operand has 201 places, 294 transitions, 2014 flow. Second operand 10 states and 818 transitions. [2024-10-13 09:49:45,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 385 transitions, 2680 flow [2024-10-13 09:49:45,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 385 transitions, 2679 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 09:49:45,851 INFO L231 Difference]: Finished difference. Result has 216 places, 311 transitions, 2195 flow [2024-10-13 09:49:45,852 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=2013, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2195, PETRI_PLACES=216, PETRI_TRANSITIONS=311} [2024-10-13 09:49:45,852 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 116 predicate places. [2024-10-13 09:49:45,853 INFO L471 AbstractCegarLoop]: Abstraction has has 216 places, 311 transitions, 2195 flow [2024-10-13 09:49:45,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 74.6) internal successors, (746), 10 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:49:45,853 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:49:45,853 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:49:45,872 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-13 09:49:46,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:49:46,055 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-13 09:49:46,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:49:46,056 INFO L85 PathProgramCache]: Analyzing trace with hash 2025334421, now seen corresponding path program 3 times [2024-10-13 09:49:46,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:49:46,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823366173] [2024-10-13 09:49:46,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:49:46,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:49:46,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:49:47,116 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2024-10-13 09:49:47,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:49:47,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823366173] [2024-10-13 09:49:47,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823366173] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:49:47,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917366886] [2024-10-13 09:49:47,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 09:49:47,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:49:47,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:49:47,119 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 09:49:47,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-13 09:49:47,224 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-10-13 09:49:47,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 09:49:47,226 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-13 09:49:47,229 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:49:47,429 INFO L378 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 13 treesize of output 9 [2024-10-13 09:49:47,560 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-10-13 09:49:47,561 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 09:49:47,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917366886] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:49:47,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 09:49:47,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 22 [2024-10-13 09:49:47,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929614044] [2024-10-13 09:49:47,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:49:47,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 09:49:47,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:49:47,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 09:49:47,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2024-10-13 09:49:47,863 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 103 [2024-10-13 09:49:47,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 311 transitions, 2195 flow. Second operand has 10 states, 10 states have (on average 74.6) internal successors, (746), 10 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:49:47,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:49:47,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 103 [2024-10-13 09:49:47,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:49:49,753 INFO L124 PetriNetUnfolderBase]: 2340/8575 cut-off events. [2024-10-13 09:49:49,754 INFO L125 PetriNetUnfolderBase]: For 14591/15006 co-relation queries the response was YES. [2024-10-13 09:49:49,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26643 conditions, 8575 events. 2340/8575 cut-off events. For 14591/15006 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 78832 event pairs, 290 based on Foata normal form. 92/8608 useless extension candidates. Maximal degree in co-relation 26408. Up to 1316 conditions per place. [2024-10-13 09:49:49,881 INFO L140 encePairwiseOnDemand]: 88/103 looper letters, 116 selfloop transitions, 23 changer transitions 4/395 dead transitions. [2024-10-13 09:49:49,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 395 transitions, 2979 flow [2024-10-13 09:49:49,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 09:49:49,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 09:49:49,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 823 transitions. [2024-10-13 09:49:49,883 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7990291262135922 [2024-10-13 09:49:49,883 INFO L175 Difference]: Start difference. First operand has 216 places, 311 transitions, 2195 flow. Second operand 10 states and 823 transitions. [2024-10-13 09:49:49,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 395 transitions, 2979 flow [2024-10-13 09:49:49,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 395 transitions, 2940 flow, removed 19 selfloop flow, removed 1 redundant places. [2024-10-13 09:49:49,976 INFO L231 Difference]: Finished difference. Result has 229 places, 323 transitions, 2365 flow [2024-10-13 09:49:49,977 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=2180, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2365, PETRI_PLACES=229, PETRI_TRANSITIONS=323} [2024-10-13 09:49:49,978 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 129 predicate places. [2024-10-13 09:49:49,978 INFO L471 AbstractCegarLoop]: Abstraction has has 229 places, 323 transitions, 2365 flow [2024-10-13 09:49:49,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 74.6) internal successors, (746), 10 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:49:49,979 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:49:49,979 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:49:49,998 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-13 09:49:50,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-13 09:49:50,184 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-13 09:49:50,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:49:50,185 INFO L85 PathProgramCache]: Analyzing trace with hash 886744127, now seen corresponding path program 4 times [2024-10-13 09:49:50,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:49:50,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418846936] [2024-10-13 09:49:50,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:49:50,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:49:50,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:49:50,788 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2024-10-13 09:49:50,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:49:50,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418846936] [2024-10-13 09:49:50,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418846936] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:49:50,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282894639] [2024-10-13 09:49:50,789 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 09:49:50,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:49:50,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:49:50,791 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 09:49:50,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-13 09:49:50,946 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 09:49:50,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 09:49:50,949 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-10-13 09:49:50,953 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:49:51,127 INFO L378 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 11 treesize of output 7 [2024-10-13 09:49:51,178 INFO L378 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 11 treesize of output 7 [2024-10-13 09:49:51,305 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-13 09:49:51,306 INFO L378 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 15 treesize of output 11 [2024-10-13 09:49:51,354 INFO L378 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 16 treesize of output 11 [2024-10-13 09:49:51,373 INFO L378 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 16 treesize of output 11 [2024-10-13 09:49:51,387 INFO L378 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 16 treesize of output 11 [2024-10-13 09:49:51,400 INFO L378 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 16 treesize of output 11 [2024-10-13 09:49:51,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-10-13 09:49:51,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2024-10-13 09:49:51,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2024-10-13 09:49:51,623 INFO L378 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 37 treesize of output 26 [2024-10-13 09:49:51,655 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-10-13 09:49:51,655 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 09:49:51,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282894639] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:49:51,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 09:49:51,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [10] total 24 [2024-10-13 09:49:51,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079372118] [2024-10-13 09:49:51,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:49:51,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-13 09:49:51,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:49:51,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-13 09:49:51,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2024-10-13 09:49:52,495 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 103 [2024-10-13 09:49:52,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 323 transitions, 2365 flow. Second operand has 16 states, 16 states have (on average 59.375) internal successors, (950), 16 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:49:52,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:49:52,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 103 [2024-10-13 09:49:52,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:49:55,902 INFO L124 PetriNetUnfolderBase]: 4255/12499 cut-off events. [2024-10-13 09:49:55,902 INFO L125 PetriNetUnfolderBase]: For 36793/37683 co-relation queries the response was YES. [2024-10-13 09:49:55,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46000 conditions, 12499 events. 4255/12499 cut-off events. For 36793/37683 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 112440 event pairs, 799 based on Foata normal form. 188/12590 useless extension candidates. Maximal degree in co-relation 45759. Up to 3006 conditions per place. [2024-10-13 09:49:56,039 INFO L140 encePairwiseOnDemand]: 75/103 looper letters, 639 selfloop transitions, 151 changer transitions 2/905 dead transitions. [2024-10-13 09:49:56,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 905 transitions, 8867 flow [2024-10-13 09:49:56,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-13 09:49:56,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-10-13 09:49:56,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1428 transitions. [2024-10-13 09:49:56,046 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6932038834951456 [2024-10-13 09:49:56,046 INFO L175 Difference]: Start difference. First operand has 229 places, 323 transitions, 2365 flow. Second operand 20 states and 1428 transitions. [2024-10-13 09:49:56,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 905 transitions, 8867 flow [2024-10-13 09:49:56,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 905 transitions, 8740 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-10-13 09:49:56,246 INFO L231 Difference]: Finished difference. Result has 259 places, 463 transitions, 4459 flow [2024-10-13 09:49:56,247 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=2337, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=4459, PETRI_PLACES=259, PETRI_TRANSITIONS=463} [2024-10-13 09:49:56,248 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 159 predicate places. [2024-10-13 09:49:56,249 INFO L471 AbstractCegarLoop]: Abstraction has has 259 places, 463 transitions, 4459 flow [2024-10-13 09:49:56,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 59.375) internal successors, (950), 16 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:49:56,250 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:49:56,250 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:49:56,271 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-13 09:49:56,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:49:56,451 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-13 09:49:56,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:49:56,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1342717929, now seen corresponding path program 5 times [2024-10-13 09:49:56,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:49:56,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087124829] [2024-10-13 09:49:56,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:49:56,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:49:56,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:49:57,094 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2024-10-13 09:49:57,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:49:57,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087124829] [2024-10-13 09:49:57,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087124829] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:49:57,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305452808] [2024-10-13 09:49:57,095 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 09:49:57,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:49:57,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:49:57,097 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 09:49:57,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-13 09:49:57,237 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-10-13 09:49:57,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 09:49:57,240 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-13 09:49:57,242 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:49:57,412 INFO L378 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 13 treesize of output 9 [2024-10-13 09:49:57,517 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-10-13 09:49:57,518 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 09:49:57,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305452808] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:49:57,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 09:49:57,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2024-10-13 09:49:57,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767792067] [2024-10-13 09:49:57,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:49:57,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 09:49:57,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:49:57,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 09:49:57,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2024-10-13 09:49:57,896 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 103 [2024-10-13 09:49:57,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 463 transitions, 4459 flow. Second operand has 10 states, 10 states have (on average 74.6) internal successors, (746), 10 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:49:57,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:49:57,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 103 [2024-10-13 09:49:57,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:50:00,385 INFO L124 PetriNetUnfolderBase]: 3186/11476 cut-off events. [2024-10-13 09:50:00,385 INFO L125 PetriNetUnfolderBase]: For 40907/41703 co-relation queries the response was YES. [2024-10-13 09:50:00,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41157 conditions, 11476 events. 3186/11476 cut-off events. For 40907/41703 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 111994 event pairs, 339 based on Foata normal form. 155/11536 useless extension candidates. Maximal degree in co-relation 40901. Up to 1846 conditions per place. [2024-10-13 09:50:00,475 INFO L140 encePairwiseOnDemand]: 88/103 looper letters, 141 selfloop transitions, 37 changer transitions 2/545 dead transitions. [2024-10-13 09:50:00,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 545 transitions, 5508 flow [2024-10-13 09:50:00,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 09:50:00,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 09:50:00,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 826 transitions. [2024-10-13 09:50:00,477 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8019417475728156 [2024-10-13 09:50:00,477 INFO L175 Difference]: Start difference. First operand has 259 places, 463 transitions, 4459 flow. Second operand 10 states and 826 transitions. [2024-10-13 09:50:00,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 545 transitions, 5508 flow [2024-10-13 09:50:00,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 545 transitions, 5393 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-10-13 09:50:00,725 INFO L231 Difference]: Finished difference. Result has 271 places, 478 transitions, 4709 flow [2024-10-13 09:50:00,726 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=4387, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4709, PETRI_PLACES=271, PETRI_TRANSITIONS=478} [2024-10-13 09:50:00,727 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 171 predicate places. [2024-10-13 09:50:00,727 INFO L471 AbstractCegarLoop]: Abstraction has has 271 places, 478 transitions, 4709 flow [2024-10-13 09:50:00,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 74.6) internal successors, (746), 10 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:50:00,728 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:50:00,728 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:50:00,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-13 09:50:00,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-13 09:50:00,929 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-13 09:50:00,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:50:00,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1575410915, now seen corresponding path program 6 times [2024-10-13 09:50:00,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:50:00,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019443553] [2024-10-13 09:50:00,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:50:00,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:50:00,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:50:01,428 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2024-10-13 09:50:01,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:50:01,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019443553] [2024-10-13 09:50:01,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019443553] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:50:01,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989283064] [2024-10-13 09:50:01,429 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 09:50:01,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:50:01,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:50:01,431 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 09:50:01,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-13 09:50:01,539 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-10-13 09:50:01,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 09:50:01,541 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-13 09:50:01,543 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:50:01,779 INFO L378 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 13 treesize of output 9 [2024-10-13 09:50:01,853 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-10-13 09:50:01,854 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 09:50:01,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989283064] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:50:01,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 09:50:01,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2024-10-13 09:50:01,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99763101] [2024-10-13 09:50:01,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:50:01,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 09:50:01,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:50:01,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 09:50:01,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2024-10-13 09:50:02,109 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 103 [2024-10-13 09:50:02,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 478 transitions, 4709 flow. Second operand has 10 states, 10 states have (on average 74.6) internal successors, (746), 10 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:50:02,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:50:02,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 103 [2024-10-13 09:50:02,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:50:04,816 INFO L124 PetriNetUnfolderBase]: 3540/12759 cut-off events. [2024-10-13 09:50:04,817 INFO L125 PetriNetUnfolderBase]: For 51860/52713 co-relation queries the response was YES. [2024-10-13 09:50:04,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47030 conditions, 12759 events. 3540/12759 cut-off events. For 51860/52713 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 127706 event pairs, 373 based on Foata normal form. 178/12840 useless extension candidates. Maximal degree in co-relation 46767. Up to 2130 conditions per place. [2024-10-13 09:50:04,945 INFO L140 encePairwiseOnDemand]: 88/103 looper letters, 160 selfloop transitions, 39 changer transitions 1/565 dead transitions. [2024-10-13 09:50:04,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 565 transitions, 6031 flow [2024-10-13 09:50:04,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 09:50:04,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 09:50:04,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 826 transitions. [2024-10-13 09:50:04,947 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8019417475728156 [2024-10-13 09:50:04,947 INFO L175 Difference]: Start difference. First operand has 271 places, 478 transitions, 4709 flow. Second operand 10 states and 826 transitions. [2024-10-13 09:50:04,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 565 transitions, 6031 flow [2024-10-13 09:50:05,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 565 transitions, 5918 flow, removed 29 selfloop flow, removed 3 redundant places. [2024-10-13 09:50:05,200 INFO L231 Difference]: Finished difference. Result has 283 places, 493 transitions, 4983 flow [2024-10-13 09:50:05,200 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=4637, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=478, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4983, PETRI_PLACES=283, PETRI_TRANSITIONS=493} [2024-10-13 09:50:05,201 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 183 predicate places. [2024-10-13 09:50:05,201 INFO L471 AbstractCegarLoop]: Abstraction has has 283 places, 493 transitions, 4983 flow [2024-10-13 09:50:05,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 74.6) internal successors, (746), 10 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:50:05,202 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:50:05,202 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:50:05,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-13 09:50:05,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-13 09:50:05,403 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-13 09:50:05,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:50:05,403 INFO L85 PathProgramCache]: Analyzing trace with hash -2068709285, now seen corresponding path program 7 times [2024-10-13 09:50:05,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:50:05,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967704749] [2024-10-13 09:50:05,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:50:05,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:50:05,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:50:06,004 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2024-10-13 09:50:06,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:50:06,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967704749] [2024-10-13 09:50:06,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967704749] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:50:06,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922665798] [2024-10-13 09:50:06,004 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-13 09:50:06,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:50:06,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:50:06,006 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 09:50:06,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-13 09:50:06,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:50:06,125 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-13 09:50:06,127 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:50:06,298 INFO L378 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 13 treesize of output 9 [2024-10-13 09:50:06,362 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-10-13 09:50:06,363 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 09:50:06,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922665798] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:50:06,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 09:50:06,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2024-10-13 09:50:06,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635766782] [2024-10-13 09:50:06,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:50:06,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 09:50:06,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:50:06,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 09:50:06,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2024-10-13 09:50:06,610 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 103 [2024-10-13 09:50:06,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 493 transitions, 4983 flow. Second operand has 10 states, 10 states have (on average 74.6) internal successors, (746), 10 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:50:06,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:50:06,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 103 [2024-10-13 09:50:06,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:50:09,513 INFO L124 PetriNetUnfolderBase]: 3893/13995 cut-off events. [2024-10-13 09:50:09,514 INFO L125 PetriNetUnfolderBase]: For 64263/65248 co-relation queries the response was YES. [2024-10-13 09:50:09,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52923 conditions, 13995 events. 3893/13995 cut-off events. For 64263/65248 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 143235 event pairs, 455 based on Foata normal form. 184/14064 useless extension candidates. Maximal degree in co-relation 52654. Up to 2287 conditions per place. [2024-10-13 09:50:09,666 INFO L140 encePairwiseOnDemand]: 88/103 looper letters, 158 selfloop transitions, 41 changer transitions 0/564 dead transitions. [2024-10-13 09:50:09,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 564 transitions, 6152 flow [2024-10-13 09:50:09,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 09:50:09,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 09:50:09,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 828 transitions. [2024-10-13 09:50:09,668 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8038834951456311 [2024-10-13 09:50:09,668 INFO L175 Difference]: Start difference. First operand has 283 places, 493 transitions, 4983 flow. Second operand 10 states and 828 transitions. [2024-10-13 09:50:09,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 564 transitions, 6152 flow [2024-10-13 09:50:10,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 564 transitions, 6058 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-10-13 09:50:10,242 INFO L231 Difference]: Finished difference. Result has 296 places, 512 transitions, 5387 flow [2024-10-13 09:50:10,242 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=4911, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5387, PETRI_PLACES=296, PETRI_TRANSITIONS=512} [2024-10-13 09:50:10,243 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 196 predicate places. [2024-10-13 09:50:10,243 INFO L471 AbstractCegarLoop]: Abstraction has has 296 places, 512 transitions, 5387 flow [2024-10-13 09:50:10,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 74.6) internal successors, (746), 10 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:50:10,243 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:50:10,243 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:50:10,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-13 09:50:10,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-13 09:50:10,444 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-13 09:50:10,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:50:10,445 INFO L85 PathProgramCache]: Analyzing trace with hash 286525711, now seen corresponding path program 8 times [2024-10-13 09:50:10,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:50:10,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735220515] [2024-10-13 09:50:10,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:50:10,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:50:10,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:50:10,896 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2024-10-13 09:50:10,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:50:10,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735220515] [2024-10-13 09:50:10,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735220515] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:50:10,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206104841] [2024-10-13 09:50:10,897 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 09:50:10,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:50:10,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:50:10,899 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 09:50:10,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-13 09:50:11,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 09:50:11,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 09:50:11,021 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-13 09:50:11,022 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:50:11,221 INFO L378 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 13 treesize of output 9 [2024-10-13 09:50:11,259 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-10-13 09:50:11,260 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 09:50:11,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206104841] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:50:11,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 09:50:11,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2024-10-13 09:50:11,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406810913] [2024-10-13 09:50:11,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:50:11,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 09:50:11,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:50:11,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 09:50:11,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2024-10-13 09:50:11,535 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 103 [2024-10-13 09:50:11,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 512 transitions, 5387 flow. Second operand has 10 states, 10 states have (on average 74.6) internal successors, (746), 10 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:50:11,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:50:11,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 103 [2024-10-13 09:50:11,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:50:15,145 INFO L124 PetriNetUnfolderBase]: 4515/15985 cut-off events. [2024-10-13 09:50:15,145 INFO L125 PetriNetUnfolderBase]: For 81867/83002 co-relation queries the response was YES. [2024-10-13 09:50:15,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61856 conditions, 15985 events. 4515/15985 cut-off events. For 81867/83002 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 169120 event pairs, 480 based on Foata normal form. 217/16064 useless extension candidates. Maximal degree in co-relation 61580. Up to 2689 conditions per place. [2024-10-13 09:50:15,306 INFO L140 encePairwiseOnDemand]: 87/103 looper letters, 177 selfloop transitions, 53 changer transitions 0/595 dead transitions. [2024-10-13 09:50:15,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 595 transitions, 6801 flow [2024-10-13 09:50:15,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 09:50:15,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 09:50:15,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 830 transitions. [2024-10-13 09:50:15,308 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8058252427184466 [2024-10-13 09:50:15,308 INFO L175 Difference]: Start difference. First operand has 296 places, 512 transitions, 5387 flow. Second operand 10 states and 830 transitions. [2024-10-13 09:50:15,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 595 transitions, 6801 flow [2024-10-13 09:50:15,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 595 transitions, 6694 flow, removed 53 selfloop flow, removed 1 redundant places. [2024-10-13 09:50:15,794 INFO L231 Difference]: Finished difference. Result has 311 places, 530 transitions, 5799 flow [2024-10-13 09:50:15,795 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=5282, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5799, PETRI_PLACES=311, PETRI_TRANSITIONS=530} [2024-10-13 09:50:15,795 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 211 predicate places. [2024-10-13 09:50:15,795 INFO L471 AbstractCegarLoop]: Abstraction has has 311 places, 530 transitions, 5799 flow [2024-10-13 09:50:15,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 74.6) internal successors, (746), 10 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:50:15,796 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:50:15,796 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:50:15,815 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-13 09:50:16,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-13 09:50:16,001 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-13 09:50:16,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:50:16,001 INFO L85 PathProgramCache]: Analyzing trace with hash 2140916627, now seen corresponding path program 9 times [2024-10-13 09:50:16,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:50:16,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268200192] [2024-10-13 09:50:16,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:50:16,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:50:16,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:50:16,851 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2024-10-13 09:50:16,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:50:16,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268200192] [2024-10-13 09:50:16,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268200192] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:50:16,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830113329] [2024-10-13 09:50:16,852 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 09:50:16,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:50:16,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:50:16,856 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 09:50:16,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-13 09:50:16,972 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-10-13 09:50:16,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 09:50:16,973 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-13 09:50:16,975 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:50:17,134 INFO L378 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 13 treesize of output 9 [2024-10-13 09:50:17,165 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-10-13 09:50:17,165 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 09:50:17,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830113329] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:50:17,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 09:50:17,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2024-10-13 09:50:17,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748815425] [2024-10-13 09:50:17,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:50:17,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 09:50:17,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:50:17,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 09:50:17,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2024-10-13 09:50:17,433 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 103 [2024-10-13 09:50:17,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 530 transitions, 5799 flow. Second operand has 10 states, 10 states have (on average 74.6) internal successors, (746), 10 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:50:17,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:50:17,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 103 [2024-10-13 09:50:17,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:50:21,412 INFO L124 PetriNetUnfolderBase]: 5147/18204 cut-off events. [2024-10-13 09:50:21,412 INFO L125 PetriNetUnfolderBase]: For 101190/102488 co-relation queries the response was YES. [2024-10-13 09:50:21,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71783 conditions, 18204 events. 5147/18204 cut-off events. For 101190/102488 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 198933 event pairs, 556 based on Foata normal form. 257/18311 useless extension candidates. Maximal degree in co-relation 71520. Up to 3082 conditions per place. [2024-10-13 09:50:21,890 INFO L140 encePairwiseOnDemand]: 87/103 looper letters, 194 selfloop transitions, 51 changer transitions 0/610 dead transitions. [2024-10-13 09:50:21,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 610 transitions, 7181 flow [2024-10-13 09:50:21,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 09:50:21,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 09:50:21,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 830 transitions. [2024-10-13 09:50:21,892 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8058252427184466 [2024-10-13 09:50:21,892 INFO L175 Difference]: Start difference. First operand has 311 places, 530 transitions, 5799 flow. Second operand 10 states and 830 transitions. [2024-10-13 09:50:21,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 610 transitions, 7181 flow [2024-10-13 09:50:22,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 610 transitions, 7094 flow, removed 43 selfloop flow, removed 1 redundant places. [2024-10-13 09:50:22,476 INFO L231 Difference]: Finished difference. Result has 325 places, 547 transitions, 6159 flow [2024-10-13 09:50:22,477 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=5712, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6159, PETRI_PLACES=325, PETRI_TRANSITIONS=547} [2024-10-13 09:50:22,477 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 225 predicate places. [2024-10-13 09:50:22,477 INFO L471 AbstractCegarLoop]: Abstraction has has 325 places, 547 transitions, 6159 flow [2024-10-13 09:50:22,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 74.6) internal successors, (746), 10 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:50:22,478 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:50:22,478 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:50:22,493 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-13 09:50:22,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:50:22,678 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-13 09:50:22,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:50:22,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1490462915, now seen corresponding path program 10 times [2024-10-13 09:50:22,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:50:22,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543738426] [2024-10-13 09:50:22,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:50:22,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:50:22,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:50:23,397 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2024-10-13 09:50:23,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:50:23,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543738426] [2024-10-13 09:50:23,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543738426] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:50:23,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520634843] [2024-10-13 09:50:23,398 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 09:50:23,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:50:23,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:50:23,400 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 09:50:23,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-13 09:50:23,552 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 09:50:23,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 09:50:23,554 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-13 09:50:23,556 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:50:23,913 INFO L378 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 11 treesize of output 7 [2024-10-13 09:50:23,930 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-10-13 09:50:23,931 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 09:50:23,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520634843] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:50:23,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 09:50:23,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2024-10-13 09:50:23,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671890716] [2024-10-13 09:50:23,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:50:23,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 09:50:23,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:50:23,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 09:50:23,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2024-10-13 09:50:24,302 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 103 [2024-10-13 09:50:24,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 547 transitions, 6159 flow. Second operand has 10 states, 10 states have (on average 74.6) internal successors, (746), 10 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:50:24,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:50:24,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 103 [2024-10-13 09:50:24,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:50:28,719 INFO L124 PetriNetUnfolderBase]: 5440/19081 cut-off events. [2024-10-13 09:50:28,719 INFO L125 PetriNetUnfolderBase]: For 110127/111504 co-relation queries the response was YES. [2024-10-13 09:50:28,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75932 conditions, 19081 events. 5440/19081 cut-off events. For 110127/111504 co-relation queries the response was YES. Maximal size of possible extension queue 698. Compared 209629 event pairs, 574 based on Foata normal form. 289/19207 useless extension candidates. Maximal degree in co-relation 75657. Up to 3259 conditions per place. [2024-10-13 09:50:28,934 INFO L140 encePairwiseOnDemand]: 86/103 looper letters, 193 selfloop transitions, 70 changer transitions 2/630 dead transitions. [2024-10-13 09:50:28,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 630 transitions, 7737 flow [2024-10-13 09:50:28,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-13 09:50:28,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-13 09:50:28,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1069 transitions. [2024-10-13 09:50:28,936 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7983569828230023 [2024-10-13 09:50:28,936 INFO L175 Difference]: Start difference. First operand has 325 places, 547 transitions, 6159 flow. Second operand 13 states and 1069 transitions. [2024-10-13 09:50:28,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 630 transitions, 7737 flow [2024-10-13 09:50:29,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 630 transitions, 7536 flow, removed 76 selfloop flow, removed 3 redundant places. [2024-10-13 09:50:29,519 INFO L231 Difference]: Finished difference. Result has 340 places, 565 transitions, 6554 flow [2024-10-13 09:50:29,519 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=6054, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6554, PETRI_PLACES=340, PETRI_TRANSITIONS=565} [2024-10-13 09:50:29,520 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 240 predicate places. [2024-10-13 09:50:29,520 INFO L471 AbstractCegarLoop]: Abstraction has has 340 places, 565 transitions, 6554 flow [2024-10-13 09:50:29,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 74.6) internal successors, (746), 10 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:50:29,520 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:50:29,520 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:50:29,533 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-13 09:50:29,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-13 09:50:29,721 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-13 09:50:29,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:50:29,722 INFO L85 PathProgramCache]: Analyzing trace with hash -168408757, now seen corresponding path program 11 times [2024-10-13 09:50:29,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:50:29,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649389155] [2024-10-13 09:50:29,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:50:29,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:50:29,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:50:30,837 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2024-10-13 09:50:30,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:50:30,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649389155] [2024-10-13 09:50:30,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649389155] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:50:30,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345319945] [2024-10-13 09:50:30,838 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 09:50:30,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:50:30,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:50:30,840 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 09:50:30,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-13 09:50:31,014 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-10-13 09:50:31,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 09:50:31,017 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-13 09:50:31,019 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:50:31,219 INFO L378 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 13 treesize of output 9 [2024-10-13 09:50:31,252 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-10-13 09:50:31,253 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 09:50:31,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345319945] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:50:31,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 09:50:31,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2024-10-13 09:50:31,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903648147] [2024-10-13 09:50:31,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:50:31,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 09:50:31,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:50:31,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 09:50:31,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2024-10-13 09:50:31,504 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 103 [2024-10-13 09:50:31,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 565 transitions, 6554 flow. Second operand has 10 states, 10 states have (on average 74.6) internal successors, (746), 10 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:50:31,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:50:31,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 103 [2024-10-13 09:50:31,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:50:36,120 INFO L124 PetriNetUnfolderBase]: 5444/19078 cut-off events. [2024-10-13 09:50:36,120 INFO L125 PetriNetUnfolderBase]: For 118652/120104 co-relation queries the response was YES. [2024-10-13 09:50:36,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76864 conditions, 19078 events. 5444/19078 cut-off events. For 118652/120104 co-relation queries the response was YES. Maximal size of possible extension queue 698. Compared 209533 event pairs, 593 based on Foata normal form. 279/19194 useless extension candidates. Maximal degree in co-relation 76583. Up to 3271 conditions per place. [2024-10-13 09:50:36,324 INFO L140 encePairwiseOnDemand]: 87/103 looper letters, 200 selfloop transitions, 62 changer transitions 0/627 dead transitions. [2024-10-13 09:50:36,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 627 transitions, 7877 flow [2024-10-13 09:50:36,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 09:50:36,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 09:50:36,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 833 transitions. [2024-10-13 09:50:36,327 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8087378640776699 [2024-10-13 09:50:36,327 INFO L175 Difference]: Start difference. First operand has 340 places, 565 transitions, 6554 flow. Second operand 10 states and 833 transitions. [2024-10-13 09:50:36,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 627 transitions, 7877 flow [2024-10-13 09:50:37,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 627 transitions, 7692 flow, removed 60 selfloop flow, removed 5 redundant places. [2024-10-13 09:50:37,019 INFO L231 Difference]: Finished difference. Result has 349 places, 577 transitions, 6825 flow [2024-10-13 09:50:37,020 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=6387, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6825, PETRI_PLACES=349, PETRI_TRANSITIONS=577} [2024-10-13 09:50:37,020 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 249 predicate places. [2024-10-13 09:50:37,020 INFO L471 AbstractCegarLoop]: Abstraction has has 349 places, 577 transitions, 6825 flow [2024-10-13 09:50:37,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 74.6) internal successors, (746), 10 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:50:37,021 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:50:37,021 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:50:37,033 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-10-13 09:50:37,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:50:37,222 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-13 09:50:37,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:50:37,222 INFO L85 PathProgramCache]: Analyzing trace with hash 346372079, now seen corresponding path program 12 times [2024-10-13 09:50:37,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:50:37,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396914385] [2024-10-13 09:50:37,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:50:37,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:50:37,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:50:37,792 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2024-10-13 09:50:37,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:50:37,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396914385] [2024-10-13 09:50:37,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396914385] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:50:37,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979737847] [2024-10-13 09:50:37,794 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 09:50:37,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:50:37,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:50:37,796 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 09:50:37,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-13 09:50:37,932 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-10-13 09:50:37,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 09:50:37,934 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-13 09:50:37,936 INFO L278 TraceCheckSpWp]: Computing forward predicates...