./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_03-funloop_simple.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_03-funloop_simple.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 8259c4061eb15e4ed63bc06f98acbb6dc3f9862bbe262b5cabdd3ad4658d3239 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 09:49:26,832 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 09:49:26,897 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-13 09:49:26,902 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 09:49:26,902 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 09:49:26,927 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 09:49:26,927 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 09:49:26,928 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 09:49:26,928 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 09:49:26,929 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 09:49:26,930 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 09:49:26,930 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 09:49:26,931 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 09:49:26,931 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 09:49:26,931 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 09:49:26,932 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 09:49:26,933 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 09:49:26,933 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 09:49:26,933 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 09:49:26,933 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 09:49:26,933 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 09:49:26,937 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 09:49:26,938 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-13 09:49:26,938 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 09:49:26,938 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 09:49:26,938 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 09:49:26,938 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 09:49:26,938 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 09:49:26,938 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 09:49:26,938 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 09:49:26,939 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 09:49:26,939 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 09:49:26,939 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 09:49:26,939 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 09:49:26,939 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 09:49:26,939 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 09:49:26,939 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 09:49:26,939 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 09:49:26,940 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 09:49:26,940 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 09:49:26,940 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 09:49:26,940 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8259c4061eb15e4ed63bc06f98acbb6dc3f9862bbe262b5cabdd3ad4658d3239 [2024-10-13 09:49:27,178 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 09:49:27,200 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 09:49:27,203 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 09:49:27,204 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 09:49:27,204 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 09:49:27,205 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_03-funloop_simple.i [2024-10-13 09:49:28,576 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 09:49:28,807 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 09:49:28,807 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_03-funloop_simple.i [2024-10-13 09:49:28,831 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3c6ed26d/48f6984942c940a9be94715c9ddab6f5/FLAG224942609 [2024-10-13 09:49:28,844 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3c6ed26d/48f6984942c940a9be94715c9ddab6f5 [2024-10-13 09:49:28,847 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 09:49:28,848 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 09:49:28,851 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 09:49:28,852 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 09:49:28,856 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 09:49:28,857 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:49:28" (1/1) ... [2024-10-13 09:49:28,858 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@151f3953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:49:28, skipping insertion in model container [2024-10-13 09:49:28,858 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:49:28" (1/1) ... [2024-10-13 09:49:28,895 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 09:49:29,217 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 09:49:29,230 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 09:49:29,268 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 09:49:29,329 INFO L204 MainTranslator]: Completed translation [2024-10-13 09:49:29,329 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:49:29 WrapperNode [2024-10-13 09:49:29,329 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 09:49:29,330 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 09:49:29,330 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 09:49:29,330 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 09:49:29,336 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:49:29" (1/1) ... [2024-10-13 09:49:29,351 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:49:29" (1/1) ... [2024-10-13 09:49:29,378 INFO L138 Inliner]: procedures = 262, calls = 12, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 114 [2024-10-13 09:49:29,379 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 09:49:29,379 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 09:49:29,379 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 09:49:29,379 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 09:49:29,387 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:49:29" (1/1) ... [2024-10-13 09:49:29,388 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:49:29" (1/1) ... [2024-10-13 09:49:29,391 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:49:29" (1/1) ... [2024-10-13 09:49:29,391 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:49:29" (1/1) ... [2024-10-13 09:49:29,401 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:49:29" (1/1) ... [2024-10-13 09:49:29,404 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:49:29" (1/1) ... [2024-10-13 09:49:29,405 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:49:29" (1/1) ... [2024-10-13 09:49:29,406 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:49:29" (1/1) ... [2024-10-13 09:49:29,408 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 09:49:29,408 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 09:49:29,409 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 09:49:29,409 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 09:49:29,409 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:49:29" (1/1) ... [2024-10-13 09:49:29,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 09:49:29,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:49:29,437 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 09:49:29,439 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 09:49:29,469 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-13 09:49:29,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-13 09:49:29,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-13 09:49:29,470 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-13 09:49:29,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 09:49:29,470 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-13 09:49:29,470 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-13 09:49:29,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 09:49:29,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 09:49:29,472 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 09:49:29,617 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 09:49:29,618 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 09:49:29,817 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 09:49:29,817 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 09:49:29,836 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 09:49:29,837 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-13 09:49:29,837 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:49:29 BoogieIcfgContainer [2024-10-13 09:49:29,837 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 09:49:29,838 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 09:49:29,838 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 09:49:29,841 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 09:49:29,841 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:49:28" (1/3) ... [2024-10-13 09:49:29,842 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@569a9d90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:49:29, skipping insertion in model container [2024-10-13 09:49:29,842 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:49:29" (2/3) ... [2024-10-13 09:49:29,842 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@569a9d90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:49:29, skipping insertion in model container [2024-10-13 09:49:29,842 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:49:29" (3/3) ... [2024-10-13 09:49:29,843 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_03-funloop_simple.i [2024-10-13 09:49:29,856 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 09:49:29,856 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-10-13 09:49:29,857 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 09:49:29,913 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 09:49:29,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 122 transitions, 248 flow [2024-10-13 09:49:30,005 INFO L124 PetriNetUnfolderBase]: 6/121 cut-off events. [2024-10-13 09:49:30,006 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 09:49:30,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 121 events. 6/121 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 210 event pairs, 0 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 99. Up to 2 conditions per place. [2024-10-13 09:49:30,013 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 122 transitions, 248 flow [2024-10-13 09:49:30,017 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 119 places, 121 transitions, 245 flow [2024-10-13 09:49:30,028 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 09:49:30,035 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;@335bf304, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 09:49:30,036 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-10-13 09:49:30,053 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 09:49:30,053 INFO L124 PetriNetUnfolderBase]: 4/53 cut-off events. [2024-10-13 09:49:30,053 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 09:49:30,053 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:49:30,054 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] [2024-10-13 09:49:30,054 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-13 09:49:30,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:49:30,060 INFO L85 PathProgramCache]: Analyzing trace with hash -742639314, now seen corresponding path program 1 times [2024-10-13 09:49:30,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:49:30,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269908697] [2024-10-13 09:49:30,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:49:30,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:49:30,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:49:30,312 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 09:49:30,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:49:30,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269908697] [2024-10-13 09:49:30,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269908697] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:49:30,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:49:30,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 09:49:30,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847309424] [2024-10-13 09:49:30,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:49:30,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:49:30,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:49:30,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:49:30,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:49:30,366 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 122 [2024-10-13 09:49:30,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 121 transitions, 245 flow. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 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 09:49:30,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:49:30,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 122 [2024-10-13 09:49:30,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:49:30,459 INFO L124 PetriNetUnfolderBase]: 14/276 cut-off events. [2024-10-13 09:49:30,459 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-13 09:49:30,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 276 events. 14/276 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 777 event pairs, 6 based on Foata normal form. 11/264 useless extension candidates. Maximal degree in co-relation 273. Up to 29 conditions per place. [2024-10-13 09:49:30,463 INFO L140 encePairwiseOnDemand]: 116/122 looper letters, 10 selfloop transitions, 2 changer transitions 0/119 dead transitions. [2024-10-13 09:49:30,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 119 transitions, 265 flow [2024-10-13 09:49:30,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:49:30,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:49:30,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 341 transitions. [2024-10-13 09:49:30,476 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9316939890710383 [2024-10-13 09:49:30,478 INFO L175 Difference]: Start difference. First operand has 119 places, 121 transitions, 245 flow. Second operand 3 states and 341 transitions. [2024-10-13 09:49:30,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 119 transitions, 265 flow [2024-10-13 09:49:30,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 119 transitions, 264 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 09:49:30,487 INFO L231 Difference]: Finished difference. Result has 121 places, 119 transitions, 250 flow [2024-10-13 09:49:30,489 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=121, PETRI_TRANSITIONS=119} [2024-10-13 09:49:30,494 INFO L277 CegarLoopForPetriNet]: 119 programPoint places, 2 predicate places. [2024-10-13 09:49:30,495 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 119 transitions, 250 flow [2024-10-13 09:49:30,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 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 09:49:30,496 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:49:30,496 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 09:49:30,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 09:49:30,497 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-13 09:49:30,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:49:30,498 INFO L85 PathProgramCache]: Analyzing trace with hash 239057404, now seen corresponding path program 1 times [2024-10-13 09:49:30,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:49:30,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343184907] [2024-10-13 09:49:30,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:49:30,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:49:30,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:49:30,670 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 09:49:30,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:49:30,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343184907] [2024-10-13 09:49:30,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343184907] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:49:30,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103214406] [2024-10-13 09:49:30,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:49:30,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:49:30,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:49:30,673 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 09:49:30,675 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 09:49:30,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:49:30,747 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-13 09:49:30,751 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:49:30,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 09:49:30,780 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 09:49:30,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103214406] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:49:30,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 09:49:30,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-10-13 09:49:30,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377055435] [2024-10-13 09:49:30,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:49:30,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:49:30,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:49:30,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:49:30,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-13 09:49:30,824 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 122 [2024-10-13 09:49:30,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 119 transitions, 250 flow. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 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 09:49:30,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:49:30,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 122 [2024-10-13 09:49:30,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:49:30,886 INFO L124 PetriNetUnfolderBase]: 21/345 cut-off events. [2024-10-13 09:49:30,886 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-13 09:49:30,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 404 conditions, 345 events. 21/345 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1314 event pairs, 10 based on Foata normal form. 3/326 useless extension candidates. Maximal degree in co-relation 384. Up to 34 conditions per place. [2024-10-13 09:49:30,890 INFO L140 encePairwiseOnDemand]: 119/122 looper letters, 14 selfloop transitions, 2 changer transitions 0/124 dead transitions. [2024-10-13 09:49:30,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 124 transitions, 292 flow [2024-10-13 09:49:30,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:49:30,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:49:30,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 341 transitions. [2024-10-13 09:49:30,893 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9316939890710383 [2024-10-13 09:49:30,893 INFO L175 Difference]: Start difference. First operand has 121 places, 119 transitions, 250 flow. Second operand 3 states and 341 transitions. [2024-10-13 09:49:30,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 124 transitions, 292 flow [2024-10-13 09:49:30,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 124 transitions, 290 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 09:49:30,896 INFO L231 Difference]: Finished difference. Result has 123 places, 120 transitions, 260 flow [2024-10-13 09:49:30,896 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=260, PETRI_PLACES=123, PETRI_TRANSITIONS=120} [2024-10-13 09:49:30,897 INFO L277 CegarLoopForPetriNet]: 119 programPoint places, 4 predicate places. [2024-10-13 09:49:30,897 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 120 transitions, 260 flow [2024-10-13 09:49:30,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 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 09:49:30,897 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:49:30,897 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 09:49:30,911 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 09:49:31,098 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 09:49:31,098 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-13 09:49:31,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:49:31,099 INFO L85 PathProgramCache]: Analyzing trace with hash 402372275, now seen corresponding path program 1 times [2024-10-13 09:49:31,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:49:31,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173951551] [2024-10-13 09:49:31,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:49:31,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:49:31,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:49:31,191 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 09:49:31,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:49:31,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173951551] [2024-10-13 09:49:31,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173951551] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:49:31,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790437965] [2024-10-13 09:49:31,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:49:31,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:49:31,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:49:31,195 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 09:49:31,196 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 09:49:31,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:49:31,267 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 09:49:31,268 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:49:31,305 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 09:49:31,305 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 09:49:31,337 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 09:49:31,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790437965] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 09:49:31,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 09:49:31,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-13 09:49:31,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40026655] [2024-10-13 09:49:31,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 09:49:31,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 09:49:31,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:49:31,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 09:49:31,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-13 09:49:31,366 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 122 [2024-10-13 09:49:31,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 120 transitions, 260 flow. Second operand has 10 states, 10 states have (on average 107.0) internal successors, (1070), 10 states have internal predecessors, (1070), 0 states have call successors, (0), 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 09:49:31,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:49:31,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 122 [2024-10-13 09:49:31,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:49:31,468 INFO L124 PetriNetUnfolderBase]: 15/336 cut-off events. [2024-10-13 09:49:31,468 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-13 09:49:31,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 406 conditions, 336 events. 15/336 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1094 event pairs, 10 based on Foata normal form. 2/316 useless extension candidates. Maximal degree in co-relation 355. Up to 34 conditions per place. [2024-10-13 09:49:31,472 INFO L140 encePairwiseOnDemand]: 116/122 looper letters, 14 selfloop transitions, 9 changer transitions 0/128 dead transitions. [2024-10-13 09:49:31,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 128 transitions, 324 flow [2024-10-13 09:49:31,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 09:49:31,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 09:49:31,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 970 transitions. [2024-10-13 09:49:31,475 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8834244080145719 [2024-10-13 09:49:31,476 INFO L175 Difference]: Start difference. First operand has 123 places, 120 transitions, 260 flow. Second operand 9 states and 970 transitions. [2024-10-13 09:49:31,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 128 transitions, 324 flow [2024-10-13 09:49:31,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 128 transitions, 322 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 09:49:31,484 INFO L231 Difference]: Finished difference. Result has 133 places, 126 transitions, 308 flow [2024-10-13 09:49:31,484 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=308, PETRI_PLACES=133, PETRI_TRANSITIONS=126} [2024-10-13 09:49:31,487 INFO L277 CegarLoopForPetriNet]: 119 programPoint places, 14 predicate places. [2024-10-13 09:49:31,488 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 126 transitions, 308 flow [2024-10-13 09:49:31,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 107.0) internal successors, (1070), 10 states have internal predecessors, (1070), 0 states have call successors, (0), 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 09:49:31,489 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:49:31,489 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 09:49:31,512 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 09:49:31,689 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 09:49:31,690 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-13 09:49:31,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:49:31,691 INFO L85 PathProgramCache]: Analyzing trace with hash -174844045, now seen corresponding path program 2 times [2024-10-13 09:49:31,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:49:31,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197743977] [2024-10-13 09:49:31,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:49:31,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:49:31,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:49:31,836 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 09:49:31,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:49:31,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197743977] [2024-10-13 09:49:31,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197743977] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:49:31,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71382123] [2024-10-13 09:49:31,838 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 09:49:31,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:49:31,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:49:31,840 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 09:49:31,841 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 09:49:31,907 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 09:49:31,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 09:49:31,908 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-13 09:49:31,910 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:49:31,944 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 09:49:31,958 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 09:49:32,012 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 09:49:32,013 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 09:49:32,046 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 09:49:32,046 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 09:49:32,075 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 09:49:32,076 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 09:49:32,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71382123] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:49:32,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 09:49:32,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2024-10-13 09:49:32,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369753385] [2024-10-13 09:49:32,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:49:32,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 09:49:32,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:49:32,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 09:49:32,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-10-13 09:49:32,283 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 122 [2024-10-13 09:49:32,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 126 transitions, 308 flow. Second operand has 6 states, 6 states have (on average 93.5) internal successors, (561), 6 states have internal predecessors, (561), 0 states have call successors, (0), 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 09:49:32,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:49:32,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 122 [2024-10-13 09:49:32,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:49:32,558 INFO L124 PetriNetUnfolderBase]: 355/1753 cut-off events. [2024-10-13 09:49:32,558 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-10-13 09:49:32,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2529 conditions, 1753 events. 355/1753 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 12612 event pairs, 172 based on Foata normal form. 0/1625 useless extension candidates. Maximal degree in co-relation 2476. Up to 583 conditions per place. [2024-10-13 09:49:32,565 INFO L140 encePairwiseOnDemand]: 107/122 looper letters, 34 selfloop transitions, 38 changer transitions 0/171 dead transitions. [2024-10-13 09:49:32,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 171 transitions, 542 flow [2024-10-13 09:49:32,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 09:49:32,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 09:49:32,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 625 transitions. [2024-10-13 09:49:32,568 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8538251366120219 [2024-10-13 09:49:32,568 INFO L175 Difference]: Start difference. First operand has 133 places, 126 transitions, 308 flow. Second operand 6 states and 625 transitions. [2024-10-13 09:49:32,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 171 transitions, 542 flow [2024-10-13 09:49:32,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 171 transitions, 536 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-13 09:49:32,572 INFO L231 Difference]: Finished difference. Result has 142 places, 163 transitions, 556 flow [2024-10-13 09:49:32,573 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=556, PETRI_PLACES=142, PETRI_TRANSITIONS=163} [2024-10-13 09:49:32,574 INFO L277 CegarLoopForPetriNet]: 119 programPoint places, 23 predicate places. [2024-10-13 09:49:32,574 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 163 transitions, 556 flow [2024-10-13 09:49:32,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 93.5) internal successors, (561), 6 states have internal predecessors, (561), 0 states have call successors, (0), 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 09:49:32,575 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:49:32,575 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 09:49:32,591 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 09:49:32,775 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 09:49:32,779 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-13 09:49:32,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:49:32,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1147914697, now seen corresponding path program 1 times [2024-10-13 09:49:32,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:49:32,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145969105] [2024-10-13 09:49:32,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:49:32,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:49:32,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:49:32,923 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 09:49:32,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:49:32,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145969105] [2024-10-13 09:49:32,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145969105] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:49:32,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581785555] [2024-10-13 09:49:32,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:49:32,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:49:32,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:49:32,929 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 09:49:32,931 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 09:49:32,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:49:32,988 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 09:49:32,989 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:49:33,030 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 09:49:33,031 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 09:49:33,106 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 09:49:33,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581785555] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 09:49:33,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 09:49:33,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-10-13 09:49:33,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098418329] [2024-10-13 09:49:33,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 09:49:33,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-13 09:49:33,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:49:33,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-13 09:49:33,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-10-13 09:49:33,143 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 122 [2024-10-13 09:49:33,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 163 transitions, 556 flow. Second operand has 18 states, 18 states have (on average 107.0) internal successors, (1926), 18 states have internal predecessors, (1926), 0 states have call successors, (0), 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 09:49:33,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:49:33,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 122 [2024-10-13 09:49:33,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:49:33,395 INFO L124 PetriNetUnfolderBase]: 133/1005 cut-off events. [2024-10-13 09:49:33,395 INFO L125 PetriNetUnfolderBase]: For 104/117 co-relation queries the response was YES. [2024-10-13 09:49:33,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1609 conditions, 1005 events. 133/1005 cut-off events. For 104/117 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 5976 event pairs, 28 based on Foata normal form. 4/953 useless extension candidates. Maximal degree in co-relation 1479. Up to 177 conditions per place. [2024-10-13 09:49:33,400 INFO L140 encePairwiseOnDemand]: 116/122 looper letters, 18 selfloop transitions, 21 changer transitions 0/181 dead transitions. [2024-10-13 09:49:33,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 181 transitions, 722 flow [2024-10-13 09:49:33,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-13 09:49:33,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-13 09:49:33,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2248 transitions. [2024-10-13 09:49:33,405 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.87743950039032 [2024-10-13 09:49:33,405 INFO L175 Difference]: Start difference. First operand has 142 places, 163 transitions, 556 flow. Second operand 21 states and 2248 transitions. [2024-10-13 09:49:33,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 181 transitions, 722 flow [2024-10-13 09:49:33,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 181 transitions, 722 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 09:49:33,412 INFO L231 Difference]: Finished difference. Result has 167 places, 176 transitions, 686 flow [2024-10-13 09:49:33,412 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=686, PETRI_PLACES=167, PETRI_TRANSITIONS=176} [2024-10-13 09:49:33,414 INFO L277 CegarLoopForPetriNet]: 119 programPoint places, 48 predicate places. [2024-10-13 09:49:33,414 INFO L471 AbstractCegarLoop]: Abstraction has has 167 places, 176 transitions, 686 flow [2024-10-13 09:49:33,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 107.0) internal successors, (1926), 18 states have internal predecessors, (1926), 0 states have call successors, (0), 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 09:49:33,415 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:49:33,415 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 09:49:33,431 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 09:49:33,620 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 09:49:33,621 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-13 09:49:33,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:49:33,621 INFO L85 PathProgramCache]: Analyzing trace with hash -635754569, now seen corresponding path program 2 times [2024-10-13 09:49:33,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:49:33,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760822900] [2024-10-13 09:49:33,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:49:33,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:49:33,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:49:33,890 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 09:49:33,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:49:33,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760822900] [2024-10-13 09:49:33,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760822900] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:49:33,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276113000] [2024-10-13 09:49:33,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 09:49:33,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:49:33,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:49:33,893 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 09:49:33,895 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 09:49:33,960 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 09:49:33,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 09:49:33,961 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-13 09:49:33,964 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:49:33,970 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 09:49:33,988 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 09:49:34,014 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 09:49:34,015 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 09:49:34,050 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 09:49:34,051 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 09:49:34,075 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 09:49:34,076 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 09:49:34,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276113000] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:49:34,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 09:49:34,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17] total 21 [2024-10-13 09:49:34,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109980137] [2024-10-13 09:49:34,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:49:34,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 09:49:34,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:49:34,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 09:49:34,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2024-10-13 09:49:34,227 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 122 [2024-10-13 09:49:34,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 176 transitions, 686 flow. Second operand has 6 states, 6 states have (on average 93.5) internal successors, (561), 6 states have internal predecessors, (561), 0 states have call successors, (0), 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 09:49:34,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:49:34,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 122 [2024-10-13 09:49:34,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:49:34,551 INFO L124 PetriNetUnfolderBase]: 451/2018 cut-off events. [2024-10-13 09:49:34,551 INFO L125 PetriNetUnfolderBase]: For 482/534 co-relation queries the response was YES. [2024-10-13 09:49:34,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3679 conditions, 2018 events. 451/2018 cut-off events. For 482/534 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 14613 event pairs, 153 based on Foata normal form. 13/1933 useless extension candidates. Maximal degree in co-relation 3542. Up to 712 conditions per place. [2024-10-13 09:49:34,570 INFO L140 encePairwiseOnDemand]: 111/122 looper letters, 67 selfloop transitions, 30 changer transitions 0/213 dead transitions. [2024-10-13 09:49:34,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 213 transitions, 996 flow [2024-10-13 09:49:34,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 09:49:34,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 09:49:34,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 609 transitions. [2024-10-13 09:49:34,572 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8319672131147541 [2024-10-13 09:49:34,573 INFO L175 Difference]: Start difference. First operand has 167 places, 176 transitions, 686 flow. Second operand 6 states and 609 transitions. [2024-10-13 09:49:34,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 213 transitions, 996 flow [2024-10-13 09:49:34,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 213 transitions, 972 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-10-13 09:49:34,580 INFO L231 Difference]: Finished difference. Result has 171 places, 205 transitions, 912 flow [2024-10-13 09:49:34,581 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=662, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=912, PETRI_PLACES=171, PETRI_TRANSITIONS=205} [2024-10-13 09:49:34,581 INFO L277 CegarLoopForPetriNet]: 119 programPoint places, 52 predicate places. [2024-10-13 09:49:34,582 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 205 transitions, 912 flow [2024-10-13 09:49:34,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 93.5) internal successors, (561), 6 states have internal predecessors, (561), 0 states have call successors, (0), 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 09:49:34,583 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:49:34,583 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 09:49:34,604 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 09:49:34,784 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 09:49:34,785 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-13 09:49:34,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:49:34,786 INFO L85 PathProgramCache]: Analyzing trace with hash -740911240, now seen corresponding path program 1 times [2024-10-13 09:49:34,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:49:34,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638765754] [2024-10-13 09:49:34,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:49:34,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:49:34,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:49:35,063 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 09:49:35,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:49:35,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638765754] [2024-10-13 09:49:35,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638765754] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:49:35,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705391700] [2024-10-13 09:49:35,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:49:35,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:49:35,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:49:35,068 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 09:49:35,081 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 09:49:35,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:49:35,160 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-13 09:49:35,162 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:49:35,248 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 09:49:35,250 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 09:49:35,461 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 09:49:35,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705391700] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 09:49:35,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 09:49:35,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2024-10-13 09:49:35,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522224805] [2024-10-13 09:49:35,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 09:49:35,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-13 09:49:35,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:49:35,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-13 09:49:35,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-10-13 09:49:35,492 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 122 [2024-10-13 09:49:35,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 205 transitions, 912 flow. Second operand has 23 states, 23 states have (on average 107.08695652173913) internal successors, (2463), 23 states have internal predecessors, (2463), 0 states have call successors, (0), 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 09:49:35,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:49:35,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 122 [2024-10-13 09:49:35,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:49:35,939 INFO L124 PetriNetUnfolderBase]: 236/1523 cut-off events. [2024-10-13 09:49:35,939 INFO L125 PetriNetUnfolderBase]: For 544/577 co-relation queries the response was YES. [2024-10-13 09:49:35,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2854 conditions, 1523 events. 236/1523 cut-off events. For 544/577 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 10162 event pairs, 35 based on Foata normal form. 13/1469 useless extension candidates. Maximal degree in co-relation 2636. Up to 221 conditions per place. [2024-10-13 09:49:35,950 INFO L140 encePairwiseOnDemand]: 116/122 looper letters, 21 selfloop transitions, 30 changer transitions 0/222 dead transitions. [2024-10-13 09:49:35,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 222 transitions, 1136 flow [2024-10-13 09:49:35,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-10-13 09:49:35,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-10-13 09:49:35,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3204 transitions. [2024-10-13 09:49:35,960 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8754098360655738 [2024-10-13 09:49:35,961 INFO L175 Difference]: Start difference. First operand has 171 places, 205 transitions, 912 flow. Second operand 30 states and 3204 transitions. [2024-10-13 09:49:35,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 222 transitions, 1136 flow [2024-10-13 09:49:35,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 222 transitions, 1136 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 09:49:35,969 INFO L231 Difference]: Finished difference. Result has 204 places, 215 transitions, 1064 flow [2024-10-13 09:49:35,971 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=912, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1064, PETRI_PLACES=204, PETRI_TRANSITIONS=215} [2024-10-13 09:49:35,972 INFO L277 CegarLoopForPetriNet]: 119 programPoint places, 85 predicate places. [2024-10-13 09:49:35,972 INFO L471 AbstractCegarLoop]: Abstraction has has 204 places, 215 transitions, 1064 flow [2024-10-13 09:49:35,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 107.08695652173913) internal successors, (2463), 23 states have internal predecessors, (2463), 0 states have call successors, (0), 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 09:49:35,974 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:49:35,974 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 09:49:35,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-13 09:49:36,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:49:36,180 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-13 09:49:36,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:49:36,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1236358266, now seen corresponding path program 2 times [2024-10-13 09:49:36,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:49:36,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150302641] [2024-10-13 09:49:36,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:49:36,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:49:36,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:49:36,542 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 09:49:36,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:49:36,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150302641] [2024-10-13 09:49:36,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150302641] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:49:36,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:49:36,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 09:49:36,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608671424] [2024-10-13 09:49:36,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:49:36,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 09:49:36,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:49:36,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 09:49:36,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-13 09:49:36,654 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 122 [2024-10-13 09:49:36,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 215 transitions, 1064 flow. Second operand has 6 states, 6 states have (on average 84.5) internal successors, (507), 6 states have internal predecessors, (507), 0 states have call successors, (0), 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 09:49:36,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:49:36,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 122 [2024-10-13 09:49:36,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:49:37,254 INFO L124 PetriNetUnfolderBase]: 1000/3502 cut-off events. [2024-10-13 09:49:37,254 INFO L125 PetriNetUnfolderBase]: For 1854/1923 co-relation queries the response was YES. [2024-10-13 09:49:37,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7882 conditions, 3502 events. 1000/3502 cut-off events. For 1854/1923 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 26714 event pairs, 304 based on Foata normal form. 18/3320 useless extension candidates. Maximal degree in co-relation 7663. Up to 1732 conditions per place. [2024-10-13 09:49:37,272 INFO L140 encePairwiseOnDemand]: 99/122 looper letters, 100 selfloop transitions, 89 changer transitions 0/302 dead transitions. [2024-10-13 09:49:37,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 302 transitions, 1782 flow [2024-10-13 09:49:37,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 09:49:37,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 09:49:37,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 607 transitions. [2024-10-13 09:49:37,274 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8292349726775956 [2024-10-13 09:49:37,274 INFO L175 Difference]: Start difference. First operand has 204 places, 215 transitions, 1064 flow. Second operand 6 states and 607 transitions. [2024-10-13 09:49:37,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 302 transitions, 1782 flow [2024-10-13 09:49:37,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 302 transitions, 1736 flow, removed 5 selfloop flow, removed 18 redundant places. [2024-10-13 09:49:37,284 INFO L231 Difference]: Finished difference. Result has 196 places, 294 transitions, 1756 flow [2024-10-13 09:49:37,285 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=1018, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1756, PETRI_PLACES=196, PETRI_TRANSITIONS=294} [2024-10-13 09:49:37,286 INFO L277 CegarLoopForPetriNet]: 119 programPoint places, 77 predicate places. [2024-10-13 09:49:37,286 INFO L471 AbstractCegarLoop]: Abstraction has has 196 places, 294 transitions, 1756 flow [2024-10-13 09:49:37,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.5) internal successors, (507), 6 states have internal predecessors, (507), 0 states have call successors, (0), 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 09:49:37,287 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:49:37,287 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 09:49:37,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 09:49:37,288 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-13 09:49:37,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:49:37,288 INFO L85 PathProgramCache]: Analyzing trace with hash -802719423, now seen corresponding path program 1 times [2024-10-13 09:49:37,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:49:37,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65025773] [2024-10-13 09:49:37,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:49:37,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:49:37,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:49:37,664 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 09:49:37,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:49:37,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65025773] [2024-10-13 09:49:37,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65025773] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:49:37,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:49:37,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 09:49:37,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24829034] [2024-10-13 09:49:37,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:49:37,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 09:49:37,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:49:37,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 09:49:37,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-13 09:49:37,773 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 122 [2024-10-13 09:49:37,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 294 transitions, 1756 flow. Second operand has 6 states, 6 states have (on average 84.5) internal successors, (507), 6 states have internal predecessors, (507), 0 states have call successors, (0), 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 09:49:37,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:49:37,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 122 [2024-10-13 09:49:37,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:49:38,368 INFO L124 PetriNetUnfolderBase]: 1203/4031 cut-off events. [2024-10-13 09:49:38,369 INFO L125 PetriNetUnfolderBase]: For 4587/4711 co-relation queries the response was YES. [2024-10-13 09:49:38,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10873 conditions, 4031 events. 1203/4031 cut-off events. For 4587/4711 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 30815 event pairs, 276 based on Foata normal form. 21/3906 useless extension candidates. Maximal degree in co-relation 10671. Up to 1975 conditions per place. [2024-10-13 09:49:38,402 INFO L140 encePairwiseOnDemand]: 107/122 looper letters, 169 selfloop transitions, 71 changer transitions 0/355 dead transitions. [2024-10-13 09:49:38,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 355 transitions, 2590 flow [2024-10-13 09:49:38,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 09:49:38,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 09:49:38,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 575 transitions. [2024-10-13 09:49:38,404 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7855191256830601 [2024-10-13 09:49:38,404 INFO L175 Difference]: Start difference. First operand has 196 places, 294 transitions, 1756 flow. Second operand 6 states and 575 transitions. [2024-10-13 09:49:38,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 355 transitions, 2590 flow [2024-10-13 09:49:38,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 355 transitions, 2494 flow, removed 48 selfloop flow, removed 0 redundant places. [2024-10-13 09:49:38,474 INFO L231 Difference]: Finished difference. Result has 206 places, 347 transitions, 2336 flow [2024-10-13 09:49:38,476 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=1666, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2336, PETRI_PLACES=206, PETRI_TRANSITIONS=347} [2024-10-13 09:49:38,476 INFO L277 CegarLoopForPetriNet]: 119 programPoint places, 87 predicate places. [2024-10-13 09:49:38,477 INFO L471 AbstractCegarLoop]: Abstraction has has 206 places, 347 transitions, 2336 flow [2024-10-13 09:49:38,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.5) internal successors, (507), 6 states have internal predecessors, (507), 0 states have call successors, (0), 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 09:49:38,478 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:49:38,478 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 09:49:38,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-13 09:49:38,478 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-13 09:49:38,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:49:38,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1337125367, now seen corresponding path program 1 times [2024-10-13 09:49:38,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:49:38,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770323894] [2024-10-13 09:49:38,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:49:38,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:49:38,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:49:39,141 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 09:49:39,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:49:39,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770323894] [2024-10-13 09:49:39,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770323894] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:49:39,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307393997] [2024-10-13 09:49:39,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:49:39,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:49:39,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:49:39,143 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 09:49:39,144 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 09:49:39,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:49:39,223 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-13 09:49:39,225 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:49:39,342 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 09:49:39,428 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 09:49:39,429 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 09:49:39,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307393997] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:49:39,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 09:49:39,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2024-10-13 09:49:39,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145364435] [2024-10-13 09:49:39,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:49:39,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 09:49:39,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:49:39,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 09:49:39,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-10-13 09:49:39,909 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 122 [2024-10-13 09:49:39,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 347 transitions, 2336 flow. Second operand has 10 states, 10 states have (on average 93.6) internal successors, (936), 10 states have internal predecessors, (936), 0 states have call successors, (0), 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 09:49:39,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:49:39,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 122 [2024-10-13 09:49:39,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:49:41,238 INFO L124 PetriNetUnfolderBase]: 2157/8071 cut-off events. [2024-10-13 09:49:41,238 INFO L125 PetriNetUnfolderBase]: For 10264/10496 co-relation queries the response was YES. [2024-10-13 09:49:41,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22156 conditions, 8071 events. 2157/8071 cut-off events. For 10264/10496 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 74256 event pairs, 297 based on Foata normal form. 73/8015 useless extension candidates. Maximal degree in co-relation 21937. Up to 1356 conditions per place. [2024-10-13 09:49:41,299 INFO L140 encePairwiseOnDemand]: 107/122 looper letters, 73 selfloop transitions, 16 changer transitions 2/410 dead transitions. [2024-10-13 09:49:41,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 410 transitions, 2676 flow [2024-10-13 09:49:41,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 09:49:41,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 09:49:41,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1008 transitions. [2024-10-13 09:49:41,302 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8262295081967214 [2024-10-13 09:49:41,302 INFO L175 Difference]: Start difference. First operand has 206 places, 347 transitions, 2336 flow. Second operand 10 states and 1008 transitions. [2024-10-13 09:49:41,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 410 transitions, 2676 flow [2024-10-13 09:49:41,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 410 transitions, 2594 flow, removed 41 selfloop flow, removed 0 redundant places. [2024-10-13 09:49:41,358 INFO L231 Difference]: Finished difference. Result has 222 places, 362 transitions, 2374 flow [2024-10-13 09:49:41,358 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=2254, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2374, PETRI_PLACES=222, PETRI_TRANSITIONS=362} [2024-10-13 09:49:41,359 INFO L277 CegarLoopForPetriNet]: 119 programPoint places, 103 predicate places. [2024-10-13 09:49:41,359 INFO L471 AbstractCegarLoop]: Abstraction has has 222 places, 362 transitions, 2374 flow [2024-10-13 09:49:41,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 93.6) internal successors, (936), 10 states have internal predecessors, (936), 0 states have call successors, (0), 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 09:49:41,359 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:49:41,360 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 09:49:41,374 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 09:49:41,563 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 09:49:41,564 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-13 09:49:41,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:49:41,564 INFO L85 PathProgramCache]: Analyzing trace with hash -462932803, now seen corresponding path program 2 times [2024-10-13 09:49:41,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:49:41,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794147727] [2024-10-13 09:49:41,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:49:41,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:49:41,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:49:42,214 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 09:49:42,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:49:42,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794147727] [2024-10-13 09:49:42,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794147727] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:49:42,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680961434] [2024-10-13 09:49:42,214 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 09:49:42,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:49:42,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:49:42,216 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 09:49:42,217 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 09:49:42,297 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 09:49:42,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 09:49:42,298 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-13 09:49:42,300 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:49:42,423 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 09:49:42,512 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 09:49:42,512 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 09:49:42,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680961434] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:49:42,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 09:49:42,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2024-10-13 09:49:42,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912906013] [2024-10-13 09:49:42,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:49:42,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 09:49:42,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:49:42,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 09:49:42,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-10-13 09:49:42,915 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 122 [2024-10-13 09:49:42,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 362 transitions, 2374 flow. Second operand has 10 states, 10 states have (on average 93.6) internal successors, (936), 10 states have internal predecessors, (936), 0 states have call successors, (0), 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 09:49:42,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:49:42,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 122 [2024-10-13 09:49:42,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:49:44,555 INFO L124 PetriNetUnfolderBase]: 2461/8964 cut-off events. [2024-10-13 09:49:44,555 INFO L125 PetriNetUnfolderBase]: For 12155/12453 co-relation queries the response was YES. [2024-10-13 09:49:44,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25938 conditions, 8964 events. 2461/8964 cut-off events. For 12155/12453 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 84729 event pairs, 306 based on Foata normal form. 80/8887 useless extension candidates. Maximal degree in co-relation 25710. Up to 1600 conditions per place. [2024-10-13 09:49:44,640 INFO L140 encePairwiseOnDemand]: 108/122 looper letters, 112 selfloop transitions, 21 changer transitions 0/452 dead transitions. [2024-10-13 09:49:44,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 452 transitions, 3038 flow [2024-10-13 09:49:44,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 09:49:44,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 09:49:44,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1007 transitions. [2024-10-13 09:49:44,643 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8254098360655737 [2024-10-13 09:49:44,643 INFO L175 Difference]: Start difference. First operand has 222 places, 362 transitions, 2374 flow. Second operand 10 states and 1007 transitions. [2024-10-13 09:49:44,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 452 transitions, 3038 flow [2024-10-13 09:49:44,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 452 transitions, 3037 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 09:49:44,701 INFO L231 Difference]: Finished difference. Result has 237 places, 378 transitions, 2549 flow [2024-10-13 09:49:44,702 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=2373, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2549, PETRI_PLACES=237, PETRI_TRANSITIONS=378} [2024-10-13 09:49:44,702 INFO L277 CegarLoopForPetriNet]: 119 programPoint places, 118 predicate places. [2024-10-13 09:49:44,702 INFO L471 AbstractCegarLoop]: Abstraction has has 237 places, 378 transitions, 2549 flow [2024-10-13 09:49:44,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 93.6) internal successors, (936), 10 states have internal predecessors, (936), 0 states have call successors, (0), 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 09:49:44,703 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:49:44,703 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 09:49:44,716 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 09:49:44,903 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 09:49:44,904 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-13 09:49:44,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:49:44,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1663547399, now seen corresponding path program 3 times [2024-10-13 09:49:44,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:49:44,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034783074] [2024-10-13 09:49:44,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:49:44,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:49:44,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:49:45,518 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 09:49:45,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:49:45,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034783074] [2024-10-13 09:49:45,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034783074] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:49:45,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133064883] [2024-10-13 09:49:45,519 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 09:49:45,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:49:45,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:49:45,520 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 09:49:45,522 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 09:49:45,603 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-10-13 09:49:45,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 09:49:45,604 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-13 09:49:45,606 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:49:45,765 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 09:49:45,856 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 09:49:45,857 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 09:49:45,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133064883] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:49:45,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 09:49:45,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2024-10-13 09:49:45,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687592733] [2024-10-13 09:49:45,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:49:45,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 09:49:45,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:49:45,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 09:49:45,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2024-10-13 09:49:46,410 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 122 [2024-10-13 09:49:46,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 378 transitions, 2549 flow. Second operand has 10 states, 10 states have (on average 93.6) internal successors, (936), 10 states have internal predecessors, (936), 0 states have call successors, (0), 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 09:49:46,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:49:46,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 122 [2024-10-13 09:49:46,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:49:48,129 INFO L124 PetriNetUnfolderBase]: 2736/10034 cut-off events. [2024-10-13 09:49:48,129 INFO L125 PetriNetUnfolderBase]: For 15975/16379 co-relation queries the response was YES. [2024-10-13 09:49:48,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30246 conditions, 10034 events. 2736/10034 cut-off events. For 15975/16379 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 96031 event pairs, 315 based on Foata normal form. 104/9991 useless extension candidates. Maximal degree in co-relation 30010. Up to 1746 conditions per place. [2024-10-13 09:49:48,222 INFO L140 encePairwiseOnDemand]: 107/122 looper letters, 118 selfloop transitions, 23 changer transitions 2/462 dead transitions. [2024-10-13 09:49:48,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 462 transitions, 3343 flow [2024-10-13 09:49:48,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 09:49:48,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 09:49:48,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1013 transitions. [2024-10-13 09:49:48,224 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.830327868852459 [2024-10-13 09:49:48,224 INFO L175 Difference]: Start difference. First operand has 237 places, 378 transitions, 2549 flow. Second operand 10 states and 1013 transitions. [2024-10-13 09:49:48,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 462 transitions, 3343 flow [2024-10-13 09:49:48,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 462 transitions, 3301 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-10-13 09:49:48,314 INFO L231 Difference]: Finished difference. Result has 249 places, 390 transitions, 2721 flow [2024-10-13 09:49:48,315 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=2533, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2721, PETRI_PLACES=249, PETRI_TRANSITIONS=390} [2024-10-13 09:49:48,315 INFO L277 CegarLoopForPetriNet]: 119 programPoint places, 130 predicate places. [2024-10-13 09:49:48,315 INFO L471 AbstractCegarLoop]: Abstraction has has 249 places, 390 transitions, 2721 flow [2024-10-13 09:49:48,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 93.6) internal successors, (936), 10 states have internal predecessors, (936), 0 states have call successors, (0), 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 09:49:48,316 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:49:48,316 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 09:49:48,336 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 09:49:48,520 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 09:49:48,521 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-13 09:49:48,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:49:48,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1620089965, now seen corresponding path program 4 times [2024-10-13 09:49:48,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:49:48,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376855315] [2024-10-13 09:49:48,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:49:48,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:49:48,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:49:49,413 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 09:49:49,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:49:49,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376855315] [2024-10-13 09:49:49,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376855315] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:49:49,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015918112] [2024-10-13 09:49:49,414 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 09:49:49,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:49:49,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:49:49,417 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 09:49:49,419 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 09:49:49,562 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 09:49:49,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 09:49:49,564 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-13 09:49:49,566 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:49:49,833 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 09:49:49,882 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 09:49:49,882 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 09:49:49,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015918112] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:49:49,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 09:49:49,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2024-10-13 09:49:49,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919171240] [2024-10-13 09:49:49,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:49:49,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 09:49:49,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:49:49,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 09:49:49,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2024-10-13 09:49:50,292 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 122 [2024-10-13 09:49:50,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 390 transitions, 2721 flow. Second operand has 10 states, 10 states have (on average 93.6) internal successors, (936), 10 states have internal predecessors, (936), 0 states have call successors, (0), 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 09:49:50,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:49:50,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 122 [2024-10-13 09:49:50,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:49:52,122 INFO L124 PetriNetUnfolderBase]: 3055/11012 cut-off events. [2024-10-13 09:49:52,122 INFO L125 PetriNetUnfolderBase]: For 19622/20124 co-relation queries the response was YES. [2024-10-13 09:49:52,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34075 conditions, 11012 events. 3055/11012 cut-off events. For 19622/20124 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 106709 event pairs, 320 based on Foata normal form. 119/10957 useless extension candidates. Maximal degree in co-relation 33833. Up to 1976 conditions per place. [2024-10-13 09:49:52,215 INFO L140 encePairwiseOnDemand]: 107/122 looper letters, 133 selfloop transitions, 28 changer transitions 0/480 dead transitions. [2024-10-13 09:49:52,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 480 transitions, 3670 flow [2024-10-13 09:49:52,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 09:49:52,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 09:49:52,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1013 transitions. [2024-10-13 09:49:52,218 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.830327868852459 [2024-10-13 09:49:52,218 INFO L175 Difference]: Start difference. First operand has 249 places, 390 transitions, 2721 flow. Second operand 10 states and 1013 transitions. [2024-10-13 09:49:52,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 480 transitions, 3670 flow [2024-10-13 09:49:52,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 480 transitions, 3589 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-10-13 09:49:52,306 INFO L231 Difference]: Finished difference. Result has 259 places, 402 transitions, 2897 flow [2024-10-13 09:49:52,306 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=2693, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2897, PETRI_PLACES=259, PETRI_TRANSITIONS=402} [2024-10-13 09:49:52,307 INFO L277 CegarLoopForPetriNet]: 119 programPoint places, 140 predicate places. [2024-10-13 09:49:52,307 INFO L471 AbstractCegarLoop]: Abstraction has has 259 places, 402 transitions, 2897 flow [2024-10-13 09:49:52,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 93.6) internal successors, (936), 10 states have internal predecessors, (936), 0 states have call successors, (0), 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 09:49:52,308 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:49:52,308 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 09:49:52,321 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-13 09:49:52,509 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 09:49:52,509 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-13 09:49:52,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:49:52,510 INFO L85 PathProgramCache]: Analyzing trace with hash -456466567, now seen corresponding path program 5 times [2024-10-13 09:49:52,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:49:52,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038262833] [2024-10-13 09:49:52,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:49:52,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:49:52,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:49:53,036 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 09:49:53,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:49:53,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038262833] [2024-10-13 09:49:53,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038262833] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:49:53,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809075032] [2024-10-13 09:49:53,037 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 09:49:53,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:49:53,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:49:53,039 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 09:49:53,044 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 09:49:53,166 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-10-13 09:49:53,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 09:49:53,168 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-13 09:49:53,170 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:49:53,321 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 09:49:53,366 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 09:49:53,366 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 09:49:53,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809075032] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:49:53,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 09:49:53,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2024-10-13 09:49:53,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953005585] [2024-10-13 09:49:53,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:49:53,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 09:49:53,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:49:53,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 09:49:53,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2024-10-13 09:49:53,772 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 122 [2024-10-13 09:49:53,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 402 transitions, 2897 flow. Second operand has 10 states, 10 states have (on average 93.6) internal successors, (936), 10 states have internal predecessors, (936), 0 states have call successors, (0), 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 09:49:53,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:49:53,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 122 [2024-10-13 09:49:53,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:49:56,044 INFO L124 PetriNetUnfolderBase]: 3363/12225 cut-off events. [2024-10-13 09:49:56,044 INFO L125 PetriNetUnfolderBase]: For 24701/25244 co-relation queries the response was YES. [2024-10-13 09:49:56,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38625 conditions, 12225 events. 3363/12225 cut-off events. For 24701/25244 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 120938 event pairs, 345 based on Foata normal form. 113/12168 useless extension candidates. Maximal degree in co-relation 38378. Up to 2138 conditions per place. [2024-10-13 09:49:56,157 INFO L140 encePairwiseOnDemand]: 107/122 looper letters, 133 selfloop transitions, 30 changer transitions 1/483 dead transitions. [2024-10-13 09:49:56,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 483 transitions, 3883 flow [2024-10-13 09:49:56,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 09:49:56,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 09:49:56,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1016 transitions. [2024-10-13 09:49:56,158 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8327868852459016 [2024-10-13 09:49:56,158 INFO L175 Difference]: Start difference. First operand has 259 places, 402 transitions, 2897 flow. Second operand 10 states and 1016 transitions. [2024-10-13 09:49:56,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 483 transitions, 3883 flow [2024-10-13 09:49:56,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 483 transitions, 3790 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-10-13 09:49:56,264 INFO L231 Difference]: Finished difference. Result has 270 places, 417 transitions, 3139 flow [2024-10-13 09:49:56,265 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=2854, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3139, PETRI_PLACES=270, PETRI_TRANSITIONS=417} [2024-10-13 09:49:56,265 INFO L277 CegarLoopForPetriNet]: 119 programPoint places, 151 predicate places. [2024-10-13 09:49:56,265 INFO L471 AbstractCegarLoop]: Abstraction has has 270 places, 417 transitions, 3139 flow [2024-10-13 09:49:56,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 93.6) internal successors, (936), 10 states have internal predecessors, (936), 0 states have call successors, (0), 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 09:49:56,266 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:49:56,266 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 09:49:56,280 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 09:49:56,466 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 09:49:56,467 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-13 09:49:56,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:49:56,467 INFO L85 PathProgramCache]: Analyzing trace with hash 708473075, now seen corresponding path program 6 times [2024-10-13 09:49:56,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:49:56,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656164228] [2024-10-13 09:49:56,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:49:56,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:49:56,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:49:56,999 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 09:49:56,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:49:57,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656164228] [2024-10-13 09:49:57,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656164228] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:49:57,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140265627] [2024-10-13 09:49:57,000 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 09:49:57,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:49:57,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:49:57,002 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 09:49:57,003 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 09:49:57,093 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-10-13 09:49:57,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 09:49:57,094 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-13 09:49:57,096 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:49:57,247 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 09:49:57,339 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 09:49:57,340 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 09:49:57,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140265627] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:49:57,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 09:49:57,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2024-10-13 09:49:57,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211297258] [2024-10-13 09:49:57,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:49:57,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 09:49:57,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:49:57,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 09:49:57,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2024-10-13 09:49:57,783 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 122 [2024-10-13 09:49:57,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 417 transitions, 3139 flow. Second operand has 10 states, 10 states have (on average 93.6) internal successors, (936), 10 states have internal predecessors, (936), 0 states have call successors, (0), 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 09:49:57,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:49:57,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 122 [2024-10-13 09:49:57,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:50:00,238 INFO L124 PetriNetUnfolderBase]: 3707/13371 cut-off events. [2024-10-13 09:50:00,239 INFO L125 PetriNetUnfolderBase]: For 30857/31486 co-relation queries the response was YES. [2024-10-13 09:50:00,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43296 conditions, 13371 events. 3707/13371 cut-off events. For 30857/31486 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 134825 event pairs, 362 based on Foata normal form. 120/13302 useless extension candidates. Maximal degree in co-relation 43043. Up to 2365 conditions per place. [2024-10-13 09:50:00,360 INFO L140 encePairwiseOnDemand]: 107/122 looper letters, 149 selfloop transitions, 35 changer transitions 0/503 dead transitions. [2024-10-13 09:50:00,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 503 transitions, 4263 flow [2024-10-13 09:50:00,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 09:50:00,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 09:50:00,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1016 transitions. [2024-10-13 09:50:00,361 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8327868852459016 [2024-10-13 09:50:00,361 INFO L175 Difference]: Start difference. First operand has 270 places, 417 transitions, 3139 flow. Second operand 10 states and 1016 transitions. [2024-10-13 09:50:00,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 503 transitions, 4263 flow [2024-10-13 09:50:00,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 503 transitions, 4165 flow, removed 27 selfloop flow, removed 3 redundant places. [2024-10-13 09:50:00,490 INFO L231 Difference]: Finished difference. Result has 282 places, 432 transitions, 3382 flow [2024-10-13 09:50:00,491 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=3078, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3382, PETRI_PLACES=282, PETRI_TRANSITIONS=432} [2024-10-13 09:50:00,491 INFO L277 CegarLoopForPetriNet]: 119 programPoint places, 163 predicate places. [2024-10-13 09:50:00,491 INFO L471 AbstractCegarLoop]: Abstraction has has 282 places, 432 transitions, 3382 flow [2024-10-13 09:50:00,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 93.6) internal successors, (936), 10 states have internal predecessors, (936), 0 states have call successors, (0), 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 09:50:00,492 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:50:00,492 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 09:50:00,504 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-13 09:50:00,692 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 09:50:00,692 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-13 09:50:00,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:50:00,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1441669521, now seen corresponding path program 7 times [2024-10-13 09:50:00,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:50:00,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62611873] [2024-10-13 09:50:00,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:50:00,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:50:00,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:50:01,059 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 09:50:01,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:50:01,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62611873] [2024-10-13 09:50:01,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62611873] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:50:01,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981766099] [2024-10-13 09:50:01,060 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-13 09:50:01,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:50:01,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:50:01,061 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 09:50:01,062 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 09:50:01,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:50:01,153 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-13 09:50:01,155 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:50:01,268 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 09:50:01,402 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 09:50:01,403 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 09:50:01,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981766099] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:50:01,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 09:50:01,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2024-10-13 09:50:01,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805895928] [2024-10-13 09:50:01,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:50:01,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 09:50:01,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:50:01,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 09:50:01,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2024-10-13 09:50:01,861 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 122 [2024-10-13 09:50:01,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 432 transitions, 3382 flow. Second operand has 10 states, 10 states have (on average 93.6) internal successors, (936), 10 states have internal predecessors, (936), 0 states have call successors, (0), 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 09:50:01,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:50:01,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 122 [2024-10-13 09:50:01,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:50:04,485 INFO L124 PetriNetUnfolderBase]: 4052/14596 cut-off events. [2024-10-13 09:50:04,486 INFO L125 PetriNetUnfolderBase]: For 39279/39975 co-relation queries the response was YES. [2024-10-13 09:50:04,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48527 conditions, 14596 events. 4052/14596 cut-off events. For 39279/39975 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 150093 event pairs, 436 based on Foata normal form. 108/14496 useless extension candidates. Maximal degree in co-relation 48268. Up to 2519 conditions per place. [2024-10-13 09:50:04,704 INFO L140 encePairwiseOnDemand]: 107/122 looper letters, 147 selfloop transitions, 37 changer transitions 0/503 dead transitions. [2024-10-13 09:50:04,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 503 transitions, 4485 flow [2024-10-13 09:50:04,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 09:50:04,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 09:50:04,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1018 transitions. [2024-10-13 09:50:04,706 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8344262295081967 [2024-10-13 09:50:04,706 INFO L175 Difference]: Start difference. First operand has 282 places, 432 transitions, 3382 flow. Second operand 10 states and 1018 transitions. [2024-10-13 09:50:04,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 503 transitions, 4485 flow [2024-10-13 09:50:04,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 503 transitions, 4383 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-10-13 09:50:04,895 INFO L231 Difference]: Finished difference. Result has 295 places, 451 transitions, 3738 flow [2024-10-13 09:50:04,895 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=3302, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3738, PETRI_PLACES=295, PETRI_TRANSITIONS=451} [2024-10-13 09:50:04,895 INFO L277 CegarLoopForPetriNet]: 119 programPoint places, 176 predicate places. [2024-10-13 09:50:04,896 INFO L471 AbstractCegarLoop]: Abstraction has has 295 places, 451 transitions, 3738 flow [2024-10-13 09:50:04,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 93.6) internal successors, (936), 10 states have internal predecessors, (936), 0 states have call successors, (0), 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 09:50:04,896 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:50:04,896 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 09:50:04,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-13 09:50:05,096 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 09:50:05,097 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-13 09:50:05,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:50:05,097 INFO L85 PathProgramCache]: Analyzing trace with hash 477434259, now seen corresponding path program 8 times [2024-10-13 09:50:05,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:50:05,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691646447] [2024-10-13 09:50:05,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:50:05,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:50:05,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:50:05,961 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 09:50:05,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:50:05,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691646447] [2024-10-13 09:50:05,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691646447] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:50:05,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980908608] [2024-10-13 09:50:05,962 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 09:50:05,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:50:05,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:50:05,964 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 09:50:05,966 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 09:50:06,063 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 09:50:06,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 09:50:06,065 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-13 09:50:06,067 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:50:06,250 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 09:50:06,318 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 09:50:06,319 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 09:50:06,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980908608] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:50:06,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 09:50:06,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 22 [2024-10-13 09:50:06,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720224012] [2024-10-13 09:50:06,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:50:06,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 09:50:06,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:50:06,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 09:50:06,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2024-10-13 09:50:06,688 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 122 [2024-10-13 09:50:06,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 451 transitions, 3738 flow. Second operand has 10 states, 10 states have (on average 93.6) internal successors, (936), 10 states have internal predecessors, (936), 0 states have call successors, (0), 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 09:50:06,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:50:06,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 122 [2024-10-13 09:50:06,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:50:09,523 INFO L124 PetriNetUnfolderBase]: 4625/16517 cut-off events. [2024-10-13 09:50:09,524 INFO L125 PetriNetUnfolderBase]: For 49981/50804 co-relation queries the response was YES. [2024-10-13 09:50:09,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56145 conditions, 16517 events. 4625/16517 cut-off events. For 49981/50804 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 174976 event pairs, 450 based on Foata normal form. 139/16450 useless extension candidates. Maximal degree in co-relation 55879. Up to 2910 conditions per place. [2024-10-13 09:50:09,698 INFO L140 encePairwiseOnDemand]: 106/122 looper letters, 168 selfloop transitions, 46 changer transitions 0/533 dead transitions. [2024-10-13 09:50:09,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 533 transitions, 5042 flow [2024-10-13 09:50:09,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 09:50:09,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 09:50:09,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1020 transitions. [2024-10-13 09:50:09,699 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8360655737704918 [2024-10-13 09:50:09,699 INFO L175 Difference]: Start difference. First operand has 295 places, 451 transitions, 3738 flow. Second operand 10 states and 1020 transitions. [2024-10-13 09:50:09,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 533 transitions, 5042 flow [2024-10-13 09:50:09,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 533 transitions, 4937 flow, removed 52 selfloop flow, removed 1 redundant places. [2024-10-13 09:50:09,917 INFO L231 Difference]: Finished difference. Result has 310 places, 469 transitions, 4092 flow [2024-10-13 09:50:09,917 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=3633, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4092, PETRI_PLACES=310, PETRI_TRANSITIONS=469} [2024-10-13 09:50:09,917 INFO L277 CegarLoopForPetriNet]: 119 programPoint places, 191 predicate places. [2024-10-13 09:50:09,917 INFO L471 AbstractCegarLoop]: Abstraction has has 310 places, 469 transitions, 4092 flow [2024-10-13 09:50:09,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 93.6) internal successors, (936), 10 states have internal predecessors, (936), 0 states have call successors, (0), 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 09:50:09,918 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:50:09,918 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 09:50:09,931 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 09:50:10,122 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 09:50:10,123 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-13 09:50:10,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:50:10,123 INFO L85 PathProgramCache]: Analyzing trace with hash -2099003809, now seen corresponding path program 9 times [2024-10-13 09:50:10,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:50:10,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211491128] [2024-10-13 09:50:10,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:50:10,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:50:10,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:50:10,657 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 09:50:10,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:50:10,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211491128] [2024-10-13 09:50:10,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211491128] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:50:10,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107699130] [2024-10-13 09:50:10,658 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 09:50:10,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:50:10,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:50:10,662 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 09:50:10,669 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 09:50:10,769 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-10-13 09:50:10,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 09:50:10,770 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-13 09:50:10,773 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:50:10,933 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 09:50:10,979 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 09:50:10,980 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 09:50:10,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107699130] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:50:10,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 09:50:10,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2024-10-13 09:50:10,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727979268] [2024-10-13 09:50:10,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:50:10,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 09:50:10,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:50:10,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 09:50:10,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2024-10-13 09:50:11,312 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 122 [2024-10-13 09:50:11,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 469 transitions, 4092 flow. Second operand has 10 states, 10 states have (on average 93.6) internal successors, (936), 10 states have internal predecessors, (936), 0 states have call successors, (0), 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 09:50:11,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:50:11,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 122 [2024-10-13 09:50:11,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:50:14,689 INFO L124 PetriNetUnfolderBase]: 5214/18568 cut-off events. [2024-10-13 09:50:14,690 INFO L125 PetriNetUnfolderBase]: For 62032/62979 co-relation queries the response was YES. [2024-10-13 09:50:14,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64416 conditions, 18568 events. 5214/18568 cut-off events. For 62032/62979 co-relation queries the response was YES. Maximal size of possible extension queue 662. Compared 202513 event pairs, 501 based on Foata normal form. 152/18502 useless extension candidates. Maximal degree in co-relation 64142. Up to 3261 conditions per place. [2024-10-13 09:50:14,931 INFO L140 encePairwiseOnDemand]: 106/122 looper letters, 183 selfloop transitions, 47 changer transitions 0/549 dead transitions. [2024-10-13 09:50:14,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 549 transitions, 5350 flow [2024-10-13 09:50:14,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 09:50:14,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 09:50:14,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1020 transitions. [2024-10-13 09:50:14,933 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8360655737704918 [2024-10-13 09:50:14,933 INFO L175 Difference]: Start difference. First operand has 310 places, 469 transitions, 4092 flow. Second operand 10 states and 1020 transitions. [2024-10-13 09:50:14,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 549 transitions, 5350 flow [2024-10-13 09:50:15,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 549 transitions, 5263 flow, removed 43 selfloop flow, removed 1 redundant places. [2024-10-13 09:50:15,273 INFO L231 Difference]: Finished difference. Result has 324 places, 486 transitions, 4416 flow [2024-10-13 09:50:15,273 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=4005, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4416, PETRI_PLACES=324, PETRI_TRANSITIONS=486} [2024-10-13 09:50:15,273 INFO L277 CegarLoopForPetriNet]: 119 programPoint places, 205 predicate places. [2024-10-13 09:50:15,273 INFO L471 AbstractCegarLoop]: Abstraction has has 324 places, 486 transitions, 4416 flow [2024-10-13 09:50:15,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 93.6) internal successors, (936), 10 states have internal predecessors, (936), 0 states have call successors, (0), 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 09:50:15,274 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:50:15,274 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 09:50:15,287 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 09:50:15,475 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 09:50:15,475 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-13 09:50:15,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:50:15,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1408800763, now seen corresponding path program 10 times [2024-10-13 09:50:15,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:50:15,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335520728] [2024-10-13 09:50:15,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:50:15,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:50:15,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:50:15,984 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 09:50:15,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:50:15,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335520728] [2024-10-13 09:50:15,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335520728] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:50:15,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977354112] [2024-10-13 09:50:15,985 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 09:50:15,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:50:15,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:50:15,987 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 09:50:15,988 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 09:50:16,111 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 09:50:16,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 09:50:16,113 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-10-13 09:50:16,115 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:50:16,276 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 09:50:16,302 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-13 09:50:16,302 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 09:50:16,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 09:50:16,380 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 09:50:16,407 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 09:50:16,440 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 09:50:16,481 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 09:50:16,508 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 09:50:16,508 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 09:50:16,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977354112] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:50:16,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 09:50:16,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [10] total 24 [2024-10-13 09:50:16,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095427374] [2024-10-13 09:50:16,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:50:16,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-13 09:50:16,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:50:16,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-13 09:50:16,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2024-10-13 09:50:17,344 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 122 [2024-10-13 09:50:17,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 486 transitions, 4416 flow. Second operand has 16 states, 16 states have (on average 74.375) internal successors, (1190), 16 states have internal predecessors, (1190), 0 states have call successors, (0), 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 09:50:17,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:50:17,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 122 [2024-10-13 09:50:17,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:50:23,651 INFO L124 PetriNetUnfolderBase]: 8730/25612 cut-off events. [2024-10-13 09:50:23,651 INFO L125 PetriNetUnfolderBase]: For 134742/136341 co-relation queries the response was YES. [2024-10-13 09:50:24,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106164 conditions, 25612 events. 8730/25612 cut-off events. For 134742/136341 co-relation queries the response was YES. Maximal size of possible extension queue 812. Compared 271094 event pairs, 1764 based on Foata normal form. 232/25505 useless extension candidates. Maximal degree in co-relation 105883. Up to 6141 conditions per place. [2024-10-13 09:50:24,157 INFO L140 encePairwiseOnDemand]: 94/122 looper letters, 1122 selfloop transitions, 146 changer transitions 0/1412 dead transitions. [2024-10-13 09:50:24,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 1412 transitions, 15215 flow [2024-10-13 09:50:24,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-13 09:50:24,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-13 09:50:24,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1827 transitions. [2024-10-13 09:50:24,163 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7131147540983607 [2024-10-13 09:50:24,163 INFO L175 Difference]: Start difference. First operand has 324 places, 486 transitions, 4416 flow. Second operand 21 states and 1827 transitions. [2024-10-13 09:50:24,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 1412 transitions, 15215 flow [2024-10-13 09:50:24,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 1412 transitions, 15059 flow, removed 57 selfloop flow, removed 3 redundant places. [2024-10-13 09:50:24,832 INFO L231 Difference]: Finished difference. Result has 355 places, 596 transitions, 6253 flow [2024-10-13 09:50:24,833 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=4317, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=6253, PETRI_PLACES=355, PETRI_TRANSITIONS=596} [2024-10-13 09:50:24,833 INFO L277 CegarLoopForPetriNet]: 119 programPoint places, 236 predicate places. [2024-10-13 09:50:24,833 INFO L471 AbstractCegarLoop]: Abstraction has has 355 places, 596 transitions, 6253 flow [2024-10-13 09:50:24,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 74.375) internal successors, (1190), 16 states have internal predecessors, (1190), 0 states have call successors, (0), 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 09:50:24,834 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:50:24,834 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 09:50:24,846 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-10-13 09:50:25,034 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 09:50:25,034 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-13 09:50:25,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:50:25,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1439686711, now seen corresponding path program 11 times [2024-10-13 09:50:25,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:50:25,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026773490] [2024-10-13 09:50:25,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:50:25,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:50:25,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:50:25,362 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 09:50:25,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:50:25,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026773490] [2024-10-13 09:50:25,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026773490] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:50:25,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894162198] [2024-10-13 09:50:25,363 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 09:50:25,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:50:25,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:50:25,365 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 09:50:25,366 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 09:50:25,493 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-10-13 09:50:25,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 09:50:25,496 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-13 09:50:25,497 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:50:25,651 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 09:50:25,692 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 09:50:25,692 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 09:50:25,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894162198] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:50:25,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 09:50:25,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2024-10-13 09:50:25,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850432974] [2024-10-13 09:50:25,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:50:25,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 09:50:25,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:50:25,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 09:50:25,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-10-13 09:50:26,051 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 122 [2024-10-13 09:50:26,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 596 transitions, 6253 flow. Second operand has 10 states, 10 states have (on average 93.6) internal successors, (936), 10 states have internal predecessors, (936), 0 states have call successors, (0), 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 09:50:26,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:50:26,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 122 [2024-10-13 09:50:26,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:50:30,648 INFO L124 PetriNetUnfolderBase]: 5923/20768 cut-off events. [2024-10-13 09:50:30,648 INFO L125 PetriNetUnfolderBase]: For 97415/98786 co-relation queries the response was YES. [2024-10-13 09:50:30,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78703 conditions, 20768 events. 5923/20768 cut-off events. For 97415/98786 co-relation queries the response was YES. Maximal size of possible extension queue 790. Compared 231548 event pairs, 532 based on Foata normal form. 192/20704 useless extension candidates. Maximal degree in co-relation 78408. Up to 3684 conditions per place. [2024-10-13 09:50:31,023 INFO L140 encePairwiseOnDemand]: 106/122 looper letters, 194 selfloop transitions, 63 changer transitions 0/659 dead transitions. [2024-10-13 09:50:31,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 659 transitions, 7523 flow [2024-10-13 09:50:31,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 09:50:31,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 09:50:31,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1023 transitions. [2024-10-13 09:50:31,025 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8385245901639344 [2024-10-13 09:50:31,025 INFO L175 Difference]: Start difference. First operand has 355 places, 596 transitions, 6253 flow. Second operand 10 states and 1023 transitions. [2024-10-13 09:50:31,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 659 transitions, 7523 flow [2024-10-13 09:50:31,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 659 transitions, 7350 flow, removed 58 selfloop flow, removed 3 redundant places. [2024-10-13 09:50:31,650 INFO L231 Difference]: Finished difference. Result has 366 places, 609 transitions, 6546 flow [2024-10-13 09:50:31,650 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=6108, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=596, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=537, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6546, PETRI_PLACES=366, PETRI_TRANSITIONS=609} [2024-10-13 09:50:31,651 INFO L277 CegarLoopForPetriNet]: 119 programPoint places, 247 predicate places. [2024-10-13 09:50:31,651 INFO L471 AbstractCegarLoop]: Abstraction has has 366 places, 609 transitions, 6546 flow [2024-10-13 09:50:31,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 93.6) internal successors, (936), 10 states have internal predecessors, (936), 0 states have call successors, (0), 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 09:50:31,651 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:50:31,651 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 09:50:31,666 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-10-13 09:50:31,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:50:31,852 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-13 09:50:31,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:50:31,852 INFO L85 PathProgramCache]: Analyzing trace with hash 691013271, now seen corresponding path program 12 times [2024-10-13 09:50:31,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:50:31,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481792100] [2024-10-13 09:50:31,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:50:31,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:50:31,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:50:32,309 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 09:50:32,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:50:32,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481792100] [2024-10-13 09:50:32,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481792100] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:50:32,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982239637] [2024-10-13 09:50:32,310 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 09:50:32,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:50:32,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:50:32,312 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 09:50:32,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-13 09:50:32,426 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-10-13 09:50:32,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 09:50:32,427 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-13 09:50:32,429 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:50:32,591 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 09:50:32,636 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 09:50:32,636 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 09:50:32,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982239637] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:50:32,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 09:50:32,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2024-10-13 09:50:32,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307622830] [2024-10-13 09:50:32,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:50:32,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 09:50:32,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:50:32,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 09:50:32,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-10-13 09:50:33,043 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 122 [2024-10-13 09:50:33,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 609 transitions, 6546 flow. Second operand has 10 states, 10 states have (on average 93.6) internal successors, (936), 10 states have internal predecessors, (936), 0 states have call successors, (0), 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 09:50:33,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:50:33,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 122 [2024-10-13 09:50:33,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand