./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 803cd42f 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 ../sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.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 bde6fe221f69c3fccb0f7c90e011f0b13ab5ca582ddcd328a459cbb512a8fd7f --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 17:53:54,750 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 17:53:54,819 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-11-22 17:53:54,825 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 17:53:54,825 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 17:53:54,845 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 17:53:54,846 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 17:53:54,846 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 17:53:54,847 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 17:53:54,848 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 17:53:54,848 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 17:53:54,848 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 17:53:54,848 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 17:53:54,849 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 17:53:54,849 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 17:53:54,850 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 17:53:54,851 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 17:53:54,852 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 17:53:54,852 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 17:53:54,853 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 17:53:54,853 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 17:53:54,853 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 17:53:54,853 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-22 17:53:54,854 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 17:53:54,854 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-22 17:53:54,855 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 17:53:54,855 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 17:53:54,855 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 17:53:54,855 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 17:53:54,855 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 17:53:54,855 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 17:53:54,856 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 17:53:54,856 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 17:53:54,856 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 17:53:54,856 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 17:53:54,856 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 17:53:54,856 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 17:53:54,856 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 17:53:54,857 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 17:53:54,857 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 17:53:54,857 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 17:53:54,858 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bde6fe221f69c3fccb0f7c90e011f0b13ab5ca582ddcd328a459cbb512a8fd7f [2024-11-22 17:53:55,099 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 17:53:55,119 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 17:53:55,121 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 17:53:55,122 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 17:53:55,122 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 17:53:55,123 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i [2024-11-22 17:53:56,287 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 17:53:56,483 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 17:53:56,485 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i [2024-11-22 17:53:56,496 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39048c663/85d04c849143463c954abf7285065433/FLAG5bfb6099f [2024-11-22 17:53:56,857 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39048c663/85d04c849143463c954abf7285065433 [2024-11-22 17:53:56,859 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 17:53:56,860 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 17:53:56,861 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 17:53:56,861 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 17:53:56,865 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 17:53:56,866 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 05:53:56" (1/1) ... [2024-11-22 17:53:56,867 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@371806c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:53:56, skipping insertion in model container [2024-11-22 17:53:56,867 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 05:53:56" (1/1) ... [2024-11-22 17:53:56,903 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 17:53:57,245 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 17:53:57,269 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 17:53:57,321 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 17:53:57,409 INFO L204 MainTranslator]: Completed translation [2024-11-22 17:53:57,410 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:53:57 WrapperNode [2024-11-22 17:53:57,410 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 17:53:57,411 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 17:53:57,415 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 17:53:57,415 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 17:53:57,420 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:53:57" (1/1) ... [2024-11-22 17:53:57,435 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:53:57" (1/1) ... [2024-11-22 17:53:57,462 INFO L138 Inliner]: procedures = 272, calls = 108, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 442 [2024-11-22 17:53:57,462 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 17:53:57,463 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 17:53:57,463 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 17:53:57,463 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 17:53:57,470 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:53:57" (1/1) ... [2024-11-22 17:53:57,470 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:53:57" (1/1) ... [2024-11-22 17:53:57,475 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:53:57" (1/1) ... [2024-11-22 17:53:57,476 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:53:57" (1/1) ... [2024-11-22 17:53:57,491 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:53:57" (1/1) ... [2024-11-22 17:53:57,496 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:53:57" (1/1) ... [2024-11-22 17:53:57,501 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:53:57" (1/1) ... [2024-11-22 17:53:57,503 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:53:57" (1/1) ... [2024-11-22 17:53:57,507 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 17:53:57,508 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 17:53:57,508 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 17:53:57,508 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 17:53:57,509 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:53:57" (1/1) ... [2024-11-22 17:53:57,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 17:53:57,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 17:53:57,542 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) [2024-11-22 17:53:57,545 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 [2024-11-22 17:53:57,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-22 17:53:57,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-22 17:53:57,584 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-22 17:53:57,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-22 17:53:57,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-22 17:53:57,584 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-22 17:53:57,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 17:53:57,585 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-22 17:53:57,585 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-22 17:53:57,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-22 17:53:57,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 17:53:57,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 17:53:57,589 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-22 17:53:57,719 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 17:53:57,722 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 17:53:58,188 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 17:53:58,188 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 17:53:58,240 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 17:53:58,241 INFO L316 CfgBuilder]: Removed 35 assume(true) statements. [2024-11-22 17:53:58,241 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 05:53:58 BoogieIcfgContainer [2024-11-22 17:53:58,242 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 17:53:58,244 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 17:53:58,244 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 17:53:58,247 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 17:53:58,247 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 05:53:56" (1/3) ... [2024-11-22 17:53:58,248 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19617e77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 05:53:58, skipping insertion in model container [2024-11-22 17:53:58,248 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:53:57" (2/3) ... [2024-11-22 17:53:58,249 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19617e77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 05:53:58, skipping insertion in model container [2024-11-22 17:53:58,249 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 05:53:58" (3/3) ... [2024-11-22 17:53:58,250 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_71-funloop_racing.i [2024-11-22 17:53:58,265 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 17:53:58,265 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2024-11-22 17:53:58,265 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 17:53:58,344 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-22 17:53:58,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 400 places, 445 transitions, 897 flow [2024-11-22 17:53:58,608 INFO L124 PetriNetUnfolderBase]: 78/679 cut-off events. [2024-11-22 17:53:58,608 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-22 17:53:58,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 684 conditions, 679 events. 78/679 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3319 event pairs, 0 based on Foata normal form. 0/569 useless extension candidates. Maximal degree in co-relation 350. Up to 8 conditions per place. [2024-11-22 17:53:58,621 INFO L82 GeneralOperation]: Start removeDead. Operand has 400 places, 445 transitions, 897 flow [2024-11-22 17:53:58,634 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 400 places, 445 transitions, 897 flow [2024-11-22 17:53:58,642 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 17:53:58,648 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;@1df0d588, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 17:53:58,649 INFO L334 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2024-11-22 17:53:58,663 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 17:53:58,663 INFO L124 PetriNetUnfolderBase]: 8/131 cut-off events. [2024-11-22 17:53:58,663 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 17:53:58,663 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 17:53:58,664 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:53:58,665 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-11-22 17:53:58,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:53:58,669 INFO L85 PathProgramCache]: Analyzing trace with hash -866271680, now seen corresponding path program 1 times [2024-11-22 17:53:58,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:53:58,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992586058] [2024-11-22 17:53:58,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:53:58,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:53:58,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:53:59,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 17:53:59,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:53:59,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992586058] [2024-11-22 17:53:59,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992586058] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:53:59,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:53:59,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 17:53:59,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401471378] [2024-11-22 17:53:59,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:53:59,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 17:53:59,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:53:59,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 17:53:59,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 17:53:59,075 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 371 out of 445 [2024-11-22 17:53:59,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 445 transitions, 897 flow. Second operand has 3 states, 3 states have (on average 372.3333333333333) internal successors, (1117), 3 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 17:53:59,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 17:53:59,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 371 of 445 [2024-11-22 17:53:59,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 17:53:59,385 INFO L124 PetriNetUnfolderBase]: 161/2166 cut-off events. [2024-11-22 17:53:59,386 INFO L125 PetriNetUnfolderBase]: For 8/9 co-relation queries the response was YES. [2024-11-22 17:53:59,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2475 conditions, 2166 events. 161/2166 cut-off events. For 8/9 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 17603 event pairs, 120 based on Foata normal form. 381/2362 useless extension candidates. Maximal degree in co-relation 2142. Up to 302 conditions per place. [2024-11-22 17:53:59,397 INFO L140 encePairwiseOnDemand]: 401/445 looper letters, 29 selfloop transitions, 2 changer transitions 0/399 dead transitions. [2024-11-22 17:53:59,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 399 transitions, 867 flow [2024-11-22 17:53:59,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 17:53:59,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 17:53:59,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1187 transitions. [2024-11-22 17:53:59,413 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8891385767790262 [2024-11-22 17:53:59,414 INFO L175 Difference]: Start difference. First operand has 400 places, 445 transitions, 897 flow. Second operand 3 states and 1187 transitions. [2024-11-22 17:53:59,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 399 transitions, 867 flow [2024-11-22 17:53:59,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 399 transitions, 867 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 17:53:59,427 INFO L231 Difference]: Finished difference. Result has 397 places, 399 transitions, 815 flow [2024-11-22 17:53:59,429 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=803, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=815, PETRI_PLACES=397, PETRI_TRANSITIONS=399} [2024-11-22 17:53:59,431 INFO L277 CegarLoopForPetriNet]: 400 programPoint places, -3 predicate places. [2024-11-22 17:53:59,432 INFO L471 AbstractCegarLoop]: Abstraction has has 397 places, 399 transitions, 815 flow [2024-11-22 17:53:59,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 372.3333333333333) internal successors, (1117), 3 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 17:53:59,433 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 17:53:59,433 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:53:59,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 17:53:59,434 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-11-22 17:53:59,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:53:59,434 INFO L85 PathProgramCache]: Analyzing trace with hash 348771746, now seen corresponding path program 1 times [2024-11-22 17:53:59,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:53:59,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481180152] [2024-11-22 17:53:59,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:53:59,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:53:59,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:53:59,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 17:53:59,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:53:59,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481180152] [2024-11-22 17:53:59,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481180152] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 17:53:59,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27594783] [2024-11-22 17:53:59,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:53:59,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:53:59,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 17:53:59,602 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) [2024-11-22 17:53:59,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 17:53:59,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:53:59,705 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 17:53:59,710 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 17:53:59,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 17:53:59,775 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 17:53:59,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 17:53:59,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27594783] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 17:53:59,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 17:53:59,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-22 17:53:59,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928835232] [2024-11-22 17:53:59,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 17:53:59,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 17:53:59,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:53:59,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 17:53:59,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-22 17:53:59,836 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 368 out of 445 [2024-11-22 17:53:59,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 399 transitions, 815 flow. Second operand has 10 states, 10 states have (on average 369.8) internal successors, (3698), 10 states have internal predecessors, (3698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 17:53:59,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 17:53:59,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 368 of 445 [2024-11-22 17:53:59,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 17:54:00,183 INFO L124 PetriNetUnfolderBase]: 161/2173 cut-off events. [2024-11-22 17:54:00,184 INFO L125 PetriNetUnfolderBase]: For 9/10 co-relation queries the response was YES. [2024-11-22 17:54:00,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2501 conditions, 2173 events. 161/2173 cut-off events. For 9/10 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 17517 event pairs, 120 based on Foata normal form. 2/1990 useless extension candidates. Maximal degree in co-relation 2406. Up to 302 conditions per place. [2024-11-22 17:54:00,192 INFO L140 encePairwiseOnDemand]: 439/445 looper letters, 33 selfloop transitions, 9 changer transitions 0/407 dead transitions. [2024-11-22 17:54:00,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 407 transitions, 917 flow [2024-11-22 17:54:00,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 17:54:00,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 17:54:00,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3356 transitions. [2024-11-22 17:54:00,197 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8379525593008739 [2024-11-22 17:54:00,197 INFO L175 Difference]: Start difference. First operand has 397 places, 399 transitions, 815 flow. Second operand 9 states and 3356 transitions. [2024-11-22 17:54:00,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 407 transitions, 917 flow [2024-11-22 17:54:00,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 407 transitions, 915 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 17:54:00,204 INFO L231 Difference]: Finished difference. Result has 407 places, 405 transitions, 863 flow [2024-11-22 17:54:00,205 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=813, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=863, PETRI_PLACES=407, PETRI_TRANSITIONS=405} [2024-11-22 17:54:00,205 INFO L277 CegarLoopForPetriNet]: 400 programPoint places, 7 predicate places. [2024-11-22 17:54:00,206 INFO L471 AbstractCegarLoop]: Abstraction has has 407 places, 405 transitions, 863 flow [2024-11-22 17:54:00,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 369.8) internal successors, (3698), 10 states have internal predecessors, (3698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 17:54:00,207 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 17:54:00,208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:54:00,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-22 17:54:00,411 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 [2024-11-22 17:54:00,412 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-11-22 17:54:00,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:54:00,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1402392674, now seen corresponding path program 2 times [2024-11-22 17:54:00,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:54:00,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104967288] [2024-11-22 17:54:00,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 17:54:00,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:54:00,442 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 17:54:00,443 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 17:54:00,878 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-22 17:54:00,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:54:00,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104967288] [2024-11-22 17:54:00,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104967288] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:54:00,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:54:00,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 17:54:00,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363970932] [2024-11-22 17:54:00,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:54:00,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 17:54:00,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:54:00,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 17:54:00,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-22 17:54:01,194 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 445 [2024-11-22 17:54:01,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 405 transitions, 863 flow. Second operand has 6 states, 6 states have (on average 300.5) internal successors, (1803), 6 states have internal predecessors, (1803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 17:54:01,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 17:54:01,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 445 [2024-11-22 17:54:01,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 17:54:02,505 INFO L124 PetriNetUnfolderBase]: 2280/9052 cut-off events. [2024-11-22 17:54:02,505 INFO L125 PetriNetUnfolderBase]: For 14/17 co-relation queries the response was YES. [2024-11-22 17:54:02,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13544 conditions, 9052 events. 2280/9052 cut-off events. For 14/17 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 92116 event pairs, 1582 based on Foata normal form. 0/8267 useless extension candidates. Maximal degree in co-relation 13420. Up to 4230 conditions per place. [2024-11-22 17:54:02,549 INFO L140 encePairwiseOnDemand]: 418/445 looper letters, 133 selfloop transitions, 86 changer transitions 0/522 dead transitions. [2024-11-22 17:54:02,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 522 transitions, 1535 flow [2024-11-22 17:54:02,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 17:54:02,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 17:54:02,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2014 transitions. [2024-11-22 17:54:02,554 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7543071161048689 [2024-11-22 17:54:02,554 INFO L175 Difference]: Start difference. First operand has 407 places, 405 transitions, 863 flow. Second operand 6 states and 2014 transitions. [2024-11-22 17:54:02,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 522 transitions, 1535 flow [2024-11-22 17:54:02,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 522 transitions, 1529 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-22 17:54:02,568 INFO L231 Difference]: Finished difference. Result has 416 places, 490 transitions, 1423 flow [2024-11-22 17:54:02,569 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=857, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1423, PETRI_PLACES=416, PETRI_TRANSITIONS=490} [2024-11-22 17:54:02,570 INFO L277 CegarLoopForPetriNet]: 400 programPoint places, 16 predicate places. [2024-11-22 17:54:02,570 INFO L471 AbstractCegarLoop]: Abstraction has has 416 places, 490 transitions, 1423 flow [2024-11-22 17:54:02,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 300.5) internal successors, (1803), 6 states have internal predecessors, (1803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 17:54:02,571 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 17:54:02,571 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:54:02,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 17:54:02,572 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-11-22 17:54:02,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:54:02,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1459430524, now seen corresponding path program 1 times [2024-11-22 17:54:02,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:54:02,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867498127] [2024-11-22 17:54:02,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:54:02,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:54:02,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:54:02,638 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-22 17:54:02,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:54:02,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867498127] [2024-11-22 17:54:02,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867498127] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:54:02,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:54:02,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 17:54:02,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788193821] [2024-11-22 17:54:02,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:54:02,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 17:54:02,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:54:02,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 17:54:02,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 17:54:02,657 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 371 out of 445 [2024-11-22 17:54:02,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 490 transitions, 1423 flow. Second operand has 3 states, 3 states have (on average 372.6666666666667) internal successors, (1118), 3 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 17:54:02,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 17:54:02,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 371 of 445 [2024-11-22 17:54:02,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 17:54:03,031 INFO L124 PetriNetUnfolderBase]: 333/2982 cut-off events. [2024-11-22 17:54:03,031 INFO L125 PetriNetUnfolderBase]: For 158/180 co-relation queries the response was YES. [2024-11-22 17:54:03,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4016 conditions, 2982 events. 333/2982 cut-off events. For 158/180 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 26714 event pairs, 136 based on Foata normal form. 1/2736 useless extension candidates. Maximal degree in co-relation 3890. Up to 374 conditions per place. [2024-11-22 17:54:03,045 INFO L140 encePairwiseOnDemand]: 442/445 looper letters, 36 selfloop transitions, 3 changer transitions 0/498 dead transitions. [2024-11-22 17:54:03,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 498 transitions, 1517 flow [2024-11-22 17:54:03,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 17:54:03,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 17:54:03,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1152 transitions. [2024-11-22 17:54:03,049 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8629213483146068 [2024-11-22 17:54:03,049 INFO L175 Difference]: Start difference. First operand has 416 places, 490 transitions, 1423 flow. Second operand 3 states and 1152 transitions. [2024-11-22 17:54:03,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 498 transitions, 1517 flow [2024-11-22 17:54:03,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 498 transitions, 1517 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 17:54:03,060 INFO L231 Difference]: Finished difference. Result has 419 places, 490 transitions, 1434 flow [2024-11-22 17:54:03,061 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=1423, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1434, PETRI_PLACES=419, PETRI_TRANSITIONS=490} [2024-11-22 17:54:03,062 INFO L277 CegarLoopForPetriNet]: 400 programPoint places, 19 predicate places. [2024-11-22 17:54:03,062 INFO L471 AbstractCegarLoop]: Abstraction has has 419 places, 490 transitions, 1434 flow [2024-11-22 17:54:03,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 372.6666666666667) internal successors, (1118), 3 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 17:54:03,063 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 17:54:03,063 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:54:03,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 17:54:03,064 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-11-22 17:54:03,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:54:03,065 INFO L85 PathProgramCache]: Analyzing trace with hash 201173402, now seen corresponding path program 1 times [2024-11-22 17:54:03,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:54:03,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497686647] [2024-11-22 17:54:03,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:54:03,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:54:03,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:54:03,205 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-22 17:54:03,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:54:03,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497686647] [2024-11-22 17:54:03,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497686647] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 17:54:03,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569913237] [2024-11-22 17:54:03,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:54:03,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:54:03,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 17:54:03,209 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) [2024-11-22 17:54:03,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 17:54:03,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:54:03,291 INFO L255 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 17:54:03,293 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 17:54:03,334 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-22 17:54:03,335 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 17:54:03,415 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-22 17:54:03,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569913237] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 17:54:03,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 17:54:03,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-11-22 17:54:03,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830340394] [2024-11-22 17:54:03,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 17:54:03,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 17:54:03,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:54:03,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 17:54:03,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-22 17:54:03,448 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 368 out of 445 [2024-11-22 17:54:03,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 490 transitions, 1434 flow. Second operand has 18 states, 18 states have (on average 369.94444444444446) internal successors, (6659), 18 states have internal predecessors, (6659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 17:54:03,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 17:54:03,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 368 of 445 [2024-11-22 17:54:03,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 17:54:03,972 INFO L124 PetriNetUnfolderBase]: 316/2886 cut-off events. [2024-11-22 17:54:03,972 INFO L125 PetriNetUnfolderBase]: For 169/208 co-relation queries the response was YES. [2024-11-22 17:54:03,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4255 conditions, 2886 events. 316/2886 cut-off events. For 169/208 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 25625 event pairs, 120 based on Foata normal form. 4/2667 useless extension candidates. Maximal degree in co-relation 4053. Up to 556 conditions per place. [2024-11-22 17:54:03,986 INFO L140 encePairwiseOnDemand]: 439/445 looper letters, 37 selfloop transitions, 21 changer transitions 0/508 dead transitions. [2024-11-22 17:54:03,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 508 transitions, 1638 flow [2024-11-22 17:54:03,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-22 17:54:03,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-22 17:54:03,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 7790 transitions. [2024-11-22 17:54:04,000 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8336008560727662 [2024-11-22 17:54:04,000 INFO L175 Difference]: Start difference. First operand has 419 places, 490 transitions, 1434 flow. Second operand 21 states and 7790 transitions. [2024-11-22 17:54:04,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 508 transitions, 1638 flow [2024-11-22 17:54:04,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 508 transitions, 1632 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 17:54:04,010 INFO L231 Difference]: Finished difference. Result has 442 places, 503 transitions, 1558 flow [2024-11-22 17:54:04,010 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=1428, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1558, PETRI_PLACES=442, PETRI_TRANSITIONS=503} [2024-11-22 17:54:04,011 INFO L277 CegarLoopForPetriNet]: 400 programPoint places, 42 predicate places. [2024-11-22 17:54:04,011 INFO L471 AbstractCegarLoop]: Abstraction has has 442 places, 503 transitions, 1558 flow [2024-11-22 17:54:04,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 369.94444444444446) internal successors, (6659), 18 states have internal predecessors, (6659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 17:54:04,014 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 17:54:04,014 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:54:04,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-22 17:54:04,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:54:04,215 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-11-22 17:54:04,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:54:04,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1124553754, now seen corresponding path program 2 times [2024-11-22 17:54:04,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:54:04,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719034664] [2024-11-22 17:54:04,216 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 17:54:04,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:54:04,243 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 17:54:04,244 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 17:54:04,536 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-22 17:54:04,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:54:04,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719034664] [2024-11-22 17:54:04,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719034664] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 17:54:04,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195960002] [2024-11-22 17:54:04,538 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 17:54:04,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:54:04,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 17:54:04,540 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) [2024-11-22 17:54:04,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 17:54:04,637 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 17:54:04,638 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 17:54:04,639 INFO L255 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-22 17:54:04,642 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 17:54:04,706 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-22 17:54:04,706 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 17:54:04,886 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-22 17:54:04,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195960002] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 17:54:04,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 17:54:04,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2024-11-22 17:54:04,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478237926] [2024-11-22 17:54:04,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 17:54:04,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-22 17:54:04,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:54:04,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-22 17:54:04,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-11-22 17:54:04,920 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 368 out of 445 [2024-11-22 17:54:04,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 503 transitions, 1558 flow. Second operand has 23 states, 23 states have (on average 370.04347826086956) internal successors, (8511), 23 states have internal predecessors, (8511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 17:54:04,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 17:54:04,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 368 of 445 [2024-11-22 17:54:04,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 17:54:05,544 INFO L124 PetriNetUnfolderBase]: 316/2901 cut-off events. [2024-11-22 17:54:05,545 INFO L125 PetriNetUnfolderBase]: For 270/309 co-relation queries the response was YES. [2024-11-22 17:54:05,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4355 conditions, 2901 events. 316/2901 cut-off events. For 270/309 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 25651 event pairs, 120 based on Foata normal form. 3/2681 useless extension candidates. Maximal degree in co-relation 4053. Up to 556 conditions per place. [2024-11-22 17:54:05,564 INFO L140 encePairwiseOnDemand]: 439/445 looper letters, 40 selfloop transitions, 30 changer transitions 0/520 dead transitions. [2024-11-22 17:54:05,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 520 transitions, 1826 flow [2024-11-22 17:54:05,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-22 17:54:05,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-22 17:54:05,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 11113 transitions. [2024-11-22 17:54:05,579 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.832434456928839 [2024-11-22 17:54:05,579 INFO L175 Difference]: Start difference. First operand has 442 places, 503 transitions, 1558 flow. Second operand 30 states and 11113 transitions. [2024-11-22 17:54:05,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 520 transitions, 1826 flow [2024-11-22 17:54:05,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 520 transitions, 1796 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-11-22 17:54:05,590 INFO L231 Difference]: Finished difference. Result has 469 places, 513 transitions, 1686 flow [2024-11-22 17:54:05,591 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=1534, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=480, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1686, PETRI_PLACES=469, PETRI_TRANSITIONS=513} [2024-11-22 17:54:05,591 INFO L277 CegarLoopForPetriNet]: 400 programPoint places, 69 predicate places. [2024-11-22 17:54:05,592 INFO L471 AbstractCegarLoop]: Abstraction has has 469 places, 513 transitions, 1686 flow [2024-11-22 17:54:05,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 370.04347826086956) internal successors, (8511), 23 states have internal predecessors, (8511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 17:54:05,594 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 17:54:05,595 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:54:05,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-22 17:54:05,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:54:05,799 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-11-22 17:54:05,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:54:05,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1787943356, now seen corresponding path program 3 times [2024-11-22 17:54:05,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:54:05,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479011457] [2024-11-22 17:54:05,800 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 17:54:05,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:54:05,867 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-22 17:54:05,868 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-22 17:54:05,868 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-22 17:54:05,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 17:54:05,924 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-22 17:54:05,925 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-22 17:54:05,926 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2024-11-22 17:54:05,928 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (21 of 23 remaining) [2024-11-22 17:54:05,929 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE (20 of 23 remaining) [2024-11-22 17:54:05,929 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (19 of 23 remaining) [2024-11-22 17:54:05,929 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (18 of 23 remaining) [2024-11-22 17:54:05,930 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (17 of 23 remaining) [2024-11-22 17:54:05,930 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (16 of 23 remaining) [2024-11-22 17:54:05,930 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (15 of 23 remaining) [2024-11-22 17:54:05,930 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (14 of 23 remaining) [2024-11-22 17:54:05,930 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (13 of 23 remaining) [2024-11-22 17:54:05,930 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (12 of 23 remaining) [2024-11-22 17:54:05,930 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (11 of 23 remaining) [2024-11-22 17:54:05,930 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (10 of 23 remaining) [2024-11-22 17:54:05,930 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 23 remaining) [2024-11-22 17:54:05,931 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 23 remaining) [2024-11-22 17:54:05,931 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 23 remaining) [2024-11-22 17:54:05,931 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 23 remaining) [2024-11-22 17:54:05,931 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 23 remaining) [2024-11-22 17:54:05,931 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 23 remaining) [2024-11-22 17:54:05,931 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 23 remaining) [2024-11-22 17:54:05,931 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 23 remaining) [2024-11-22 17:54:05,931 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 23 remaining) [2024-11-22 17:54:05,931 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 23 remaining) [2024-11-22 17:54:05,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 17:54:05,932 INFO L407 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1] [2024-11-22 17:54:05,936 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-22 17:54:05,937 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-22 17:54:06,001 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-22 17:54:06,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 501 places, 560 transitions, 1136 flow [2024-11-22 17:54:06,111 INFO L124 PetriNetUnfolderBase]: 126/1056 cut-off events. [2024-11-22 17:54:06,112 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-22 17:54:06,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1068 conditions, 1056 events. 126/1056 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 6081 event pairs, 0 based on Foata normal form. 0/879 useless extension candidates. Maximal degree in co-relation 681. Up to 12 conditions per place. [2024-11-22 17:54:06,127 INFO L82 GeneralOperation]: Start removeDead. Operand has 501 places, 560 transitions, 1136 flow [2024-11-22 17:54:06,134 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 501 places, 560 transitions, 1136 flow [2024-11-22 17:54:06,135 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 17:54:06,135 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;@1df0d588, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 17:54:06,136 INFO L334 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2024-11-22 17:54:06,142 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 17:54:06,142 INFO L124 PetriNetUnfolderBase]: 8/131 cut-off events. [2024-11-22 17:54:06,142 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 17:54:06,142 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 17:54:06,143 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:54:06,143 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2024-11-22 17:54:06,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:54:06,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1660146576, now seen corresponding path program 1 times [2024-11-22 17:54:06,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:54:06,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107532395] [2024-11-22 17:54:06,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:54:06,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:54:06,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:54:06,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 17:54:06,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:54:06,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107532395] [2024-11-22 17:54:06,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107532395] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:54:06,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:54:06,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 17:54:06,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900786274] [2024-11-22 17:54:06,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:54:06,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 17:54:06,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:54:06,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 17:54:06,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 17:54:06,185 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 462 out of 560 [2024-11-22 17:54:06,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 560 transitions, 1136 flow. Second operand has 3 states, 3 states have (on average 463.3333333333333) internal successors, (1390), 3 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 17:54:06,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 17:54:06,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 462 of 560 [2024-11-22 17:54:06,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 17:54:08,846 INFO L124 PetriNetUnfolderBase]: 2887/20443 cut-off events. [2024-11-22 17:54:08,846 INFO L125 PetriNetUnfolderBase]: For 151/155 co-relation queries the response was YES. [2024-11-22 17:54:08,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24699 conditions, 20443 events. 2887/20443 cut-off events. For 151/155 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 274064 event pairs, 2376 based on Foata normal form. 5241/23985 useless extension candidates. Maximal degree in co-relation 22020. Up to 4183 conditions per place. [2024-11-22 17:54:08,995 INFO L140 encePairwiseOnDemand]: 503/560 looper letters, 39 selfloop transitions, 2 changer transitions 0/499 dead transitions. [2024-11-22 17:54:08,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 499 transitions, 1096 flow [2024-11-22 17:54:08,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 17:54:08,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 17:54:08,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1483 transitions. [2024-11-22 17:54:08,997 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8827380952380952 [2024-11-22 17:54:08,998 INFO L175 Difference]: Start difference. First operand has 501 places, 560 transitions, 1136 flow. Second operand 3 states and 1483 transitions. [2024-11-22 17:54:08,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 499 transitions, 1096 flow [2024-11-22 17:54:09,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 499 transitions, 1096 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 17:54:09,003 INFO L231 Difference]: Finished difference. Result has 496 places, 499 transitions, 1024 flow [2024-11-22 17:54:09,004 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=560, PETRI_DIFFERENCE_MINUEND_FLOW=1012, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=496, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1024, PETRI_PLACES=496, PETRI_TRANSITIONS=499} [2024-11-22 17:54:09,005 INFO L277 CegarLoopForPetriNet]: 501 programPoint places, -5 predicate places. [2024-11-22 17:54:09,005 INFO L471 AbstractCegarLoop]: Abstraction has has 496 places, 499 transitions, 1024 flow [2024-11-22 17:54:09,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 463.3333333333333) internal successors, (1390), 3 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 17:54:09,005 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 17:54:09,005 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:54:09,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 17:54:09,006 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2024-11-22 17:54:09,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:54:09,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1481426014, now seen corresponding path program 1 times [2024-11-22 17:54:09,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:54:09,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210748391] [2024-11-22 17:54:09,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:54:09,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:54:09,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:54:09,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 17:54:09,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:54:09,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210748391] [2024-11-22 17:54:09,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210748391] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 17:54:09,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800151117] [2024-11-22 17:54:09,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:54:09,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:54:09,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 17:54:09,090 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) [2024-11-22 17:54:09,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 17:54:09,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:54:09,167 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 17:54:09,168 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 17:54:09,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 17:54:09,192 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 17:54:09,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 17:54:09,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800151117] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 17:54:09,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 17:54:09,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-22 17:54:09,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428942208] [2024-11-22 17:54:09,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 17:54:09,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 17:54:09,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:54:09,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 17:54:09,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-22 17:54:09,235 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 459 out of 560 [2024-11-22 17:54:09,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 499 transitions, 1024 flow. Second operand has 10 states, 10 states have (on average 460.8) internal successors, (4608), 10 states have internal predecessors, (4608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 17:54:09,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 17:54:09,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 459 of 560 [2024-11-22 17:54:09,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 17:54:11,929 INFO L124 PetriNetUnfolderBase]: 2887/20450 cut-off events. [2024-11-22 17:54:11,929 INFO L125 PetriNetUnfolderBase]: For 152/156 co-relation queries the response was YES. [2024-11-22 17:54:12,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24725 conditions, 20450 events. 2887/20450 cut-off events. For 152/156 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 274414 event pairs, 2376 based on Foata normal form. 2/18753 useless extension candidates. Maximal degree in co-relation 24629. Up to 4183 conditions per place. [2024-11-22 17:54:12,078 INFO L140 encePairwiseOnDemand]: 554/560 looper letters, 43 selfloop transitions, 9 changer transitions 0/507 dead transitions. [2024-11-22 17:54:12,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 507 transitions, 1146 flow [2024-11-22 17:54:12,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 17:54:12,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 17:54:12,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4185 transitions. [2024-11-22 17:54:12,086 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8303571428571429 [2024-11-22 17:54:12,086 INFO L175 Difference]: Start difference. First operand has 496 places, 499 transitions, 1024 flow. Second operand 9 states and 4185 transitions. [2024-11-22 17:54:12,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 507 transitions, 1146 flow [2024-11-22 17:54:12,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 507 transitions, 1144 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 17:54:12,094 INFO L231 Difference]: Finished difference. Result has 506 places, 505 transitions, 1072 flow [2024-11-22 17:54:12,094 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=560, PETRI_DIFFERENCE_MINUEND_FLOW=1022, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1072, PETRI_PLACES=506, PETRI_TRANSITIONS=505} [2024-11-22 17:54:12,095 INFO L277 CegarLoopForPetriNet]: 501 programPoint places, 5 predicate places. [2024-11-22 17:54:12,095 INFO L471 AbstractCegarLoop]: Abstraction has has 506 places, 505 transitions, 1072 flow [2024-11-22 17:54:12,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 460.8) internal successors, (4608), 10 states have internal predecessors, (4608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 17:54:12,097 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 17:54:12,097 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:54:12,105 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 17:54:12,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:54:12,298 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2024-11-22 17:54:12,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:54:12,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1132784542, now seen corresponding path program 2 times [2024-11-22 17:54:12,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:54:12,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930644454] [2024-11-22 17:54:12,299 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 17:54:12,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:54:12,320 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 17:54:12,321 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 17:54:12,637 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-22 17:54:12,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:54:12,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930644454] [2024-11-22 17:54:12,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930644454] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:54:12,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:54:12,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 17:54:12,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391160346] [2024-11-22 17:54:12,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:54:12,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 17:54:12,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:54:12,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 17:54:12,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-22 17:54:13,108 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 370 out of 560 [2024-11-22 17:54:13,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 505 transitions, 1072 flow. Second operand has 6 states, 6 states have (on average 371.5) internal successors, (2229), 6 states have internal predecessors, (2229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 17:54:13,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 17:54:13,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 370 of 560 [2024-11-22 17:54:13,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand