./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-data-race.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_77-tricky_address4_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_77-tricky_address4_racing.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 dce9d71ca8bbe247a74e6b2653e5cdb882c6b8b5d902edf534df70d90ee806fe --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 17:11:56,499 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 17:11:56,581 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-11 17:11:56,587 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 17:11:56,589 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 17:11:56,614 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 17:11:56,615 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 17:11:56,616 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 17:11:56,616 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 17:11:56,617 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 17:11:56,618 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 17:11:56,618 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 17:11:56,619 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 17:11:56,619 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 17:11:56,621 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 17:11:56,621 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 17:11:56,621 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 17:11:56,622 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 17:11:56,622 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 17:11:56,622 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 17:11:56,622 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 17:11:56,623 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 17:11:56,623 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-11 17:11:56,624 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 17:11:56,624 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 17:11:56,624 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 17:11:56,625 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 17:11:56,625 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 17:11:56,625 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 17:11:56,629 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 17:11:56,629 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 17:11:56,629 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 17:11:56,629 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 17:11:56,630 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 17:11:56,630 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 17:11:56,630 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 17:11:56,630 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 17:11:56,630 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 17:11:56,631 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 17:11:56,631 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 17:11:56,631 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 17:11:56,632 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dce9d71ca8bbe247a74e6b2653e5cdb882c6b8b5d902edf534df70d90ee806fe [2024-10-11 17:11:56,893 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 17:11:56,919 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 17:11:56,922 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 17:11:56,923 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 17:11:56,923 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 17:11:56,925 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_77-tricky_address4_racing.i [2024-10-11 17:11:58,435 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 17:11:58,729 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 17:11:58,730 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_77-tricky_address4_racing.i [2024-10-11 17:11:58,752 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/54efeee68/44f121c59dbc4644b3d7e1ef3baeb4ca/FLAG1f41f5cbe [2024-10-11 17:11:58,767 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/54efeee68/44f121c59dbc4644b3d7e1ef3baeb4ca [2024-10-11 17:11:58,769 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 17:11:58,771 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 17:11:58,774 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 17:11:58,775 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 17:11:58,780 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 17:11:58,781 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 05:11:58" (1/1) ... [2024-10-11 17:11:58,782 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@586ad3b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:11:58, skipping insertion in model container [2024-10-11 17:11:58,782 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 05:11:58" (1/1) ... [2024-10-11 17:11:58,835 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 17:11:59,314 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 17:11:59,339 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 17:11:59,401 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 17:11:59,462 INFO L204 MainTranslator]: Completed translation [2024-10-11 17:11:59,462 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:11:59 WrapperNode [2024-10-11 17:11:59,462 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 17:11:59,463 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 17:11:59,463 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 17:11:59,463 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 17:11:59,470 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:11:59" (1/1) ... [2024-10-11 17:11:59,488 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:11:59" (1/1) ... [2024-10-11 17:11:59,526 INFO L138 Inliner]: procedures = 271, calls = 50, calls flagged for inlining = 7, calls inlined = 8, statements flattened = 289 [2024-10-11 17:11:59,526 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 17:11:59,527 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 17:11:59,527 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 17:11:59,527 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 17:11:59,537 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:11:59" (1/1) ... [2024-10-11 17:11:59,537 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:11:59" (1/1) ... [2024-10-11 17:11:59,545 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:11:59" (1/1) ... [2024-10-11 17:11:59,545 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:11:59" (1/1) ... [2024-10-11 17:11:59,562 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:11:59" (1/1) ... [2024-10-11 17:11:59,568 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:11:59" (1/1) ... [2024-10-11 17:11:59,571 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:11:59" (1/1) ... [2024-10-11 17:11:59,573 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:11:59" (1/1) ... [2024-10-11 17:11:59,578 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 17:11:59,579 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 17:11:59,580 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 17:11:59,580 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 17:11:59,581 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:11:59" (1/1) ... [2024-10-11 17:11:59,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 17:11:59,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:11:59,627 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 17:11:59,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 17:11:59,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-11 17:11:59,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-11 17:11:59,684 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-11 17:11:59,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-11 17:11:59,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-11 17:11:59,685 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-11 17:11:59,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 17:11:59,685 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-11 17:11:59,685 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-11 17:11:59,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-11 17:11:59,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 17:11:59,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 17:11:59,688 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 17:11:59,848 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 17:11:59,850 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 17:12:00,398 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 17:12:00,399 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 17:12:00,474 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 17:12:00,474 INFO L314 CfgBuilder]: Removed 23 assume(true) statements. [2024-10-11 17:12:00,474 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 05:12:00 BoogieIcfgContainer [2024-10-11 17:12:00,474 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 17:12:00,476 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 17:12:00,477 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 17:12:00,479 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 17:12:00,480 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 05:11:58" (1/3) ... [2024-10-11 17:12:00,480 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1236423 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 05:12:00, skipping insertion in model container [2024-10-11 17:12:00,481 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:11:59" (2/3) ... [2024-10-11 17:12:00,481 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1236423 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 05:12:00, skipping insertion in model container [2024-10-11 17:12:00,481 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 05:12:00" (3/3) ... [2024-10-11 17:12:00,482 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_77-tricky_address4_racing.i [2024-10-11 17:12:00,498 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 17:12:00,501 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-10-11 17:12:00,501 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 17:12:00,607 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-11 17:12:00,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 265 places, 295 transitions, 597 flow [2024-10-11 17:12:00,814 INFO L124 PetriNetUnfolderBase]: 48/424 cut-off events. [2024-10-11 17:12:00,815 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-11 17:12:00,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 429 conditions, 424 events. 48/424 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1671 event pairs, 0 based on Foata normal form. 0/354 useless extension candidates. Maximal degree in co-relation 248. Up to 8 conditions per place. [2024-10-11 17:12:00,827 INFO L82 GeneralOperation]: Start removeDead. Operand has 265 places, 295 transitions, 597 flow [2024-10-11 17:12:00,836 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 265 places, 295 transitions, 597 flow [2024-10-11 17:12:00,845 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 17:12:00,852 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;@2b3d6bc9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 17:12:00,853 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-10-11 17:12:00,868 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 17:12:00,868 INFO L124 PetriNetUnfolderBase]: 8/74 cut-off events. [2024-10-11 17:12:00,869 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 17:12:00,869 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:12:00,870 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] [2024-10-11 17:12:00,871 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2024-10-11 17:12:00,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:12:00,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1287411917, now seen corresponding path program 1 times [2024-10-11 17:12:00,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:12:00,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233472067] [2024-10-11 17:12:00,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:12:00,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:12:01,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:12:01,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:12:01,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:12:01,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233472067] [2024-10-11 17:12:01,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233472067] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:12:01,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:12:01,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 17:12:01,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894066777] [2024-10-11 17:12:01,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:12:01,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 17:12:01,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:12:01,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 17:12:01,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 17:12:01,324 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 295 [2024-10-11 17:12:01,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 295 transitions, 597 flow. Second operand has 3 states, 3 states have (on average 241.33333333333334) internal successors, (724), 3 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:12:01,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:12:01,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 295 [2024-10-11 17:12:01,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:12:01,660 INFO L124 PetriNetUnfolderBase]: 85/1251 cut-off events. [2024-10-11 17:12:01,660 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-11 17:12:01,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1435 conditions, 1251 events. 85/1251 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 8287 event pairs, 72 based on Foata normal form. 205/1340 useless extension candidates. Maximal degree in co-relation 1250. Up to 178 conditions per place. [2024-10-11 17:12:01,678 INFO L140 encePairwiseOnDemand]: 263/295 looper letters, 23 selfloop transitions, 2 changer transitions 1/263 dead transitions. [2024-10-11 17:12:01,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 263 transitions, 583 flow [2024-10-11 17:12:01,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 17:12:01,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 17:12:01,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 776 transitions. [2024-10-11 17:12:01,732 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8768361581920904 [2024-10-11 17:12:01,737 INFO L175 Difference]: Start difference. First operand has 265 places, 295 transitions, 597 flow. Second operand 3 states and 776 transitions. [2024-10-11 17:12:01,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 263 transitions, 583 flow [2024-10-11 17:12:01,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 263 transitions, 583 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 17:12:01,752 INFO L231 Difference]: Finished difference. Result has 264 places, 262 transitions, 541 flow [2024-10-11 17:12:01,755 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=541, PETRI_PLACES=264, PETRI_TRANSITIONS=262} [2024-10-11 17:12:01,761 INFO L277 CegarLoopForPetriNet]: 265 programPoint places, -1 predicate places. [2024-10-11 17:12:01,761 INFO L471 AbstractCegarLoop]: Abstraction has has 264 places, 262 transitions, 541 flow [2024-10-11 17:12:01,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 241.33333333333334) internal successors, (724), 3 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:12:01,762 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:12:01,763 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] [2024-10-11 17:12:01,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 17:12:01,764 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2024-10-11 17:12:01,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:12:01,765 INFO L85 PathProgramCache]: Analyzing trace with hash -330683134, now seen corresponding path program 1 times [2024-10-11 17:12:01,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:12:01,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538235824] [2024-10-11 17:12:01,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:12:01,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:12:01,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:12:01,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:12:01,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:12:01,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538235824] [2024-10-11 17:12:01,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538235824] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:12:01,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064476833] [2024-10-11 17:12:01,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:12:01,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:12:01,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:12:01,992 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:12:01,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 17:12:02,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:12:02,096 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 17:12:02,101 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:12:02,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:12:02,180 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:12:02,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:12:02,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064476833] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:12:02,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 17:12:02,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-11 17:12:02,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419591194] [2024-10-11 17:12:02,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 17:12:02,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 17:12:02,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:12:02,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 17:12:02,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 17:12:02,296 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 295 [2024-10-11 17:12:02,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 262 transitions, 541 flow. Second operand has 10 states, 10 states have (on average 238.8) internal successors, (2388), 10 states have internal predecessors, (2388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:12:02,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:12:02,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 295 [2024-10-11 17:12:02,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:12:02,638 INFO L124 PetriNetUnfolderBase]: 85/1257 cut-off events. [2024-10-11 17:12:02,638 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-10-11 17:12:02,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1460 conditions, 1257 events. 85/1257 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 8330 event pairs, 72 based on Foata normal form. 2/1144 useless extension candidates. Maximal degree in co-relation 1424. Up to 178 conditions per place. [2024-10-11 17:12:02,646 INFO L140 encePairwiseOnDemand]: 289/295 looper letters, 27 selfloop transitions, 9 changer transitions 0/270 dead transitions. [2024-10-11 17:12:02,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 270 transitions, 631 flow [2024-10-11 17:12:02,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 17:12:02,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 17:12:02,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2171 transitions. [2024-10-11 17:12:02,652 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8177024482109227 [2024-10-11 17:12:02,652 INFO L175 Difference]: Start difference. First operand has 264 places, 262 transitions, 541 flow. Second operand 9 states and 2171 transitions. [2024-10-11 17:12:02,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 270 transitions, 631 flow [2024-10-11 17:12:02,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 270 transitions, 629 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 17:12:02,663 INFO L231 Difference]: Finished difference. Result has 273 places, 268 transitions, 589 flow [2024-10-11 17:12:02,664 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=539, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=589, PETRI_PLACES=273, PETRI_TRANSITIONS=268} [2024-10-11 17:12:02,665 INFO L277 CegarLoopForPetriNet]: 265 programPoint places, 8 predicate places. [2024-10-11 17:12:02,665 INFO L471 AbstractCegarLoop]: Abstraction has has 273 places, 268 transitions, 589 flow [2024-10-11 17:12:02,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 238.8) internal successors, (2388), 10 states have internal predecessors, (2388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:12:02,667 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:12:02,667 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] [2024-10-11 17:12:02,690 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 17:12:02,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:12:02,869 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2024-10-11 17:12:02,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:12:02,870 INFO L85 PathProgramCache]: Analyzing trace with hash 471515042, now seen corresponding path program 2 times [2024-10-11 17:12:02,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:12:02,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144661232] [2024-10-11 17:12:02,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:12:02,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:12:02,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:12:03,089 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:12:03,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:12:03,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144661232] [2024-10-11 17:12:03,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144661232] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:12:03,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57707041] [2024-10-11 17:12:03,091 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 17:12:03,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:12:03,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:12:03,093 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:12:03,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 17:12:03,176 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 17:12:03,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 17:12:03,178 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-11 17:12:03,180 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:12:03,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-11 17:12:03,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-10-11 17:12:03,380 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 17:12:03,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-10-11 17:12:03,440 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 17:12:03,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-10-11 17:12:03,484 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-11 17:12:03,484 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 17:12:03,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57707041] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:12:03,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 17:12:03,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2024-10-11 17:12:03,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171095623] [2024-10-11 17:12:03,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:12:03,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 17:12:03,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:12:03,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 17:12:03,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-10-11 17:12:03,869 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 295 [2024-10-11 17:12:03,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 268 transitions, 589 flow. Second operand has 8 states, 8 states have (on average 188.125) internal successors, (1505), 8 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:12:03,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:12:03,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 295 [2024-10-11 17:12:03,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:12:04,638 INFO L124 PetriNetUnfolderBase]: 1305/4921 cut-off events. [2024-10-11 17:12:04,639 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-10-11 17:12:04,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7545 conditions, 4921 events. 1305/4921 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 43609 event pairs, 1025 based on Foata normal form. 1/4478 useless extension candidates. Maximal degree in co-relation 7480. Up to 2436 conditions per place. [2024-10-11 17:12:04,667 INFO L140 encePairwiseOnDemand]: 283/295 looper letters, 127 selfloop transitions, 11 changer transitions 2/331 dead transitions. [2024-10-11 17:12:04,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 331 transitions, 995 flow [2024-10-11 17:12:04,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 17:12:04,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-11 17:12:04,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1638 transitions. [2024-10-11 17:12:04,672 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6940677966101695 [2024-10-11 17:12:04,672 INFO L175 Difference]: Start difference. First operand has 273 places, 268 transitions, 589 flow. Second operand 8 states and 1638 transitions. [2024-10-11 17:12:04,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 331 transitions, 995 flow [2024-10-11 17:12:04,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 331 transitions, 989 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-11 17:12:04,682 INFO L231 Difference]: Finished difference. Result has 284 places, 275 transitions, 650 flow [2024-10-11 17:12:04,682 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=583, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=650, PETRI_PLACES=284, PETRI_TRANSITIONS=275} [2024-10-11 17:12:04,684 INFO L277 CegarLoopForPetriNet]: 265 programPoint places, 19 predicate places. [2024-10-11 17:12:04,684 INFO L471 AbstractCegarLoop]: Abstraction has has 284 places, 275 transitions, 650 flow [2024-10-11 17:12:04,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 188.125) internal successors, (1505), 8 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:12:04,686 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:12:04,686 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 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] [2024-10-11 17:12:04,704 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 17:12:04,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:12:04,887 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2024-10-11 17:12:04,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:12:04,887 INFO L85 PathProgramCache]: Analyzing trace with hash 802124064, now seen corresponding path program 1 times [2024-10-11 17:12:04,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:12:04,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640823406] [2024-10-11 17:12:04,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:12:04,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:12:04,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:12:05,124 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-11 17:12:05,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:12:05,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640823406] [2024-10-11 17:12:05,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640823406] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:12:05,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710718900] [2024-10-11 17:12:05,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:12:05,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:12:05,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:12:05,127 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:12:05,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 17:12:05,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:12:05,234 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 17:12:05,237 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:12:05,285 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-11 17:12:05,286 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:12:05,392 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-11 17:12:05,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710718900] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:12:05,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 17:12:05,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-10-11 17:12:05,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297658325] [2024-10-11 17:12:05,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 17:12:05,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 17:12:05,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:12:05,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 17:12:05,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-10-11 17:12:05,440 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 295 [2024-10-11 17:12:05,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 275 transitions, 650 flow. Second operand has 18 states, 18 states have (on average 238.94444444444446) internal successors, (4301), 18 states have internal predecessors, (4301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:12:05,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:12:05,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 295 [2024-10-11 17:12:05,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:12:05,885 INFO L124 PetriNetUnfolderBase]: 88/1266 cut-off events. [2024-10-11 17:12:05,886 INFO L125 PetriNetUnfolderBase]: For 30/34 co-relation queries the response was YES. [2024-10-11 17:12:05,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1572 conditions, 1266 events. 88/1266 cut-off events. For 30/34 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 8500 event pairs, 74 based on Foata normal form. 4/1158 useless extension candidates. Maximal degree in co-relation 1430. Up to 175 conditions per place. [2024-10-11 17:12:05,894 INFO L140 encePairwiseOnDemand]: 289/295 looper letters, 31 selfloop transitions, 21 changer transitions 0/293 dead transitions. [2024-10-11 17:12:05,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 293 transitions, 842 flow [2024-10-11 17:12:05,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-11 17:12:05,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-11 17:12:05,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5033 transitions. [2024-10-11 17:12:05,904 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8124293785310734 [2024-10-11 17:12:05,905 INFO L175 Difference]: Start difference. First operand has 284 places, 275 transitions, 650 flow. Second operand 21 states and 5033 transitions. [2024-10-11 17:12:05,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 293 transitions, 842 flow [2024-10-11 17:12:05,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 293 transitions, 835 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 17:12:05,913 INFO L231 Difference]: Finished difference. Result has 307 places, 288 transitions, 773 flow [2024-10-11 17:12:05,914 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=643, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=773, PETRI_PLACES=307, PETRI_TRANSITIONS=288} [2024-10-11 17:12:05,916 INFO L277 CegarLoopForPetriNet]: 265 programPoint places, 42 predicate places. [2024-10-11 17:12:05,916 INFO L471 AbstractCegarLoop]: Abstraction has has 307 places, 288 transitions, 773 flow [2024-10-11 17:12:05,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 238.94444444444446) internal successors, (4301), 18 states have internal predecessors, (4301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:12:05,919 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:12:05,919 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 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] [2024-10-11 17:12:05,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-11 17:12:06,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:12:06,120 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2024-10-11 17:12:06,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:12:06,121 INFO L85 PathProgramCache]: Analyzing trace with hash 979242592, now seen corresponding path program 2 times [2024-10-11 17:12:06,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:12:06,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068508167] [2024-10-11 17:12:06,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:12:06,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:12:06,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:12:06,477 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-11 17:12:06,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:12:06,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068508167] [2024-10-11 17:12:06,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068508167] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:12:06,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817967304] [2024-10-11 17:12:06,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 17:12:06,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:12:06,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:12:06,480 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:12:06,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 17:12:06,563 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 17:12:06,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 17:12:06,565 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 17:12:06,568 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:12:06,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-10-11 17:12:06,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2024-10-11 17:12:06,627 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 17:12:06,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2024-10-11 17:12:06,667 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 17:12:06,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2024-10-11 17:12:06,699 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2024-10-11 17:12:06,699 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 17:12:06,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817967304] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:12:06,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 17:12:06,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17] total 21 [2024-10-11 17:12:06,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903976630] [2024-10-11 17:12:06,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:12:06,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 17:12:06,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:12:06,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 17:12:06,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2024-10-11 17:12:06,989 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 295 [2024-10-11 17:12:06,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 288 transitions, 773 flow. Second operand has 6 states, 6 states have (on average 190.66666666666666) internal successors, (1144), 6 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:12:06,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:12:06,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 295 [2024-10-11 17:12:06,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:12:08,150 INFO L124 PetriNetUnfolderBase]: 1363/5180 cut-off events. [2024-10-11 17:12:08,150 INFO L125 PetriNetUnfolderBase]: For 284/284 co-relation queries the response was YES. [2024-10-11 17:12:08,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8363 conditions, 5180 events. 1363/5180 cut-off events. For 284/284 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 46223 event pairs, 1033 based on Foata normal form. 29/4764 useless extension candidates. Maximal degree in co-relation 8214. Up to 2519 conditions per place. [2024-10-11 17:12:08,181 INFO L140 encePairwiseOnDemand]: 268/295 looper letters, 107 selfloop transitions, 92 changer transitions 0/404 dead transitions. [2024-10-11 17:12:08,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 404 transitions, 1425 flow [2024-10-11 17:12:08,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 17:12:08,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 17:12:08,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1322 transitions. [2024-10-11 17:12:08,184 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7468926553672316 [2024-10-11 17:12:08,184 INFO L175 Difference]: Start difference. First operand has 307 places, 288 transitions, 773 flow. Second operand 6 states and 1322 transitions. [2024-10-11 17:12:08,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 404 transitions, 1425 flow [2024-10-11 17:12:08,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 404 transitions, 1401 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-10-11 17:12:08,198 INFO L231 Difference]: Finished difference. Result has 311 places, 372 transitions, 1357 flow [2024-10-11 17:12:08,199 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=749, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1357, PETRI_PLACES=311, PETRI_TRANSITIONS=372} [2024-10-11 17:12:08,201 INFO L277 CegarLoopForPetriNet]: 265 programPoint places, 46 predicate places. [2024-10-11 17:12:08,202 INFO L471 AbstractCegarLoop]: Abstraction has has 311 places, 372 transitions, 1357 flow [2024-10-11 17:12:08,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 190.66666666666666) internal successors, (1144), 6 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:12:08,203 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:12:08,203 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] [2024-10-11 17:12:08,220 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 17:12:08,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:12:08,408 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2024-10-11 17:12:08,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:12:08,410 INFO L85 PathProgramCache]: Analyzing trace with hash 291750212, now seen corresponding path program 1 times [2024-10-11 17:12:08,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:12:08,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255985081] [2024-10-11 17:12:08,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:12:08,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:12:08,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:12:08,791 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-11 17:12:08,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:12:08,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255985081] [2024-10-11 17:12:08,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255985081] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:12:08,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770814125] [2024-10-11 17:12:08,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:12:08,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:12:08,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:12:08,796 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:12:08,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 17:12:08,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:12:08,906 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 17:12:08,908 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:12:08,984 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-11 17:12:08,984 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:12:09,198 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-11 17:12:09,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770814125] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:12:09,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 17:12:09,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2024-10-11 17:12:09,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654240787] [2024-10-11 17:12:09,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 17:12:09,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-11 17:12:09,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:12:09,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-11 17:12:09,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-10-11 17:12:09,233 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 295 [2024-10-11 17:12:09,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 372 transitions, 1357 flow. Second operand has 23 states, 23 states have (on average 239.04347826086956) internal successors, (5498), 23 states have internal predecessors, (5498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:12:09,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:12:09,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 295 [2024-10-11 17:12:09,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:12:09,870 INFO L124 PetriNetUnfolderBase]: 258/1933 cut-off events. [2024-10-11 17:12:09,871 INFO L125 PetriNetUnfolderBase]: For 480/536 co-relation queries the response was YES. [2024-10-11 17:12:09,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3140 conditions, 1933 events. 258/1933 cut-off events. For 480/536 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 14519 event pairs, 72 based on Foata normal form. 3/1794 useless extension candidates. Maximal degree in co-relation 2911. Up to 232 conditions per place. [2024-10-11 17:12:09,885 INFO L140 encePairwiseOnDemand]: 289/295 looper letters, 34 selfloop transitions, 30 changer transitions 0/389 dead transitions. [2024-10-11 17:12:09,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 389 transitions, 1607 flow [2024-10-11 17:12:09,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-10-11 17:12:09,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-10-11 17:12:09,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 7177 transitions. [2024-10-11 17:12:09,899 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8109604519774011 [2024-10-11 17:12:09,900 INFO L175 Difference]: Start difference. First operand has 311 places, 372 transitions, 1357 flow. Second operand 30 states and 7177 transitions. [2024-10-11 17:12:09,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 389 transitions, 1607 flow [2024-10-11 17:12:09,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 389 transitions, 1589 flow, removed 9 selfloop flow, removed 0 redundant places. [2024-10-11 17:12:09,912 INFO L231 Difference]: Finished difference. Result has 344 places, 382 transitions, 1491 flow [2024-10-11 17:12:09,913 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=1339, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1491, PETRI_PLACES=344, PETRI_TRANSITIONS=382} [2024-10-11 17:12:09,914 INFO L277 CegarLoopForPetriNet]: 265 programPoint places, 79 predicate places. [2024-10-11 17:12:09,914 INFO L471 AbstractCegarLoop]: Abstraction has has 344 places, 382 transitions, 1491 flow [2024-10-11 17:12:09,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 239.04347826086956) internal successors, (5498), 23 states have internal predecessors, (5498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:12:09,917 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:12:09,917 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] [2024-10-11 17:12:09,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-11 17:12:10,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:12:10,118 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2024-10-11 17:12:10,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:12:10,119 INFO L85 PathProgramCache]: Analyzing trace with hash -896090125, now seen corresponding path program 2 times [2024-10-11 17:12:10,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:12:10,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150714329] [2024-10-11 17:12:10,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:12:10,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:12:10,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 17:12:10,159 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 17:12:10,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 17:12:10,224 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 17:12:10,225 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 17:12:10,226 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2024-10-11 17:12:10,228 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (16 of 18 remaining) [2024-10-11 17:12:10,229 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (15 of 18 remaining) [2024-10-11 17:12:10,229 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (14 of 18 remaining) [2024-10-11 17:12:10,229 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (13 of 18 remaining) [2024-10-11 17:12:10,230 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (12 of 18 remaining) [2024-10-11 17:12:10,230 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (11 of 18 remaining) [2024-10-11 17:12:10,232 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (10 of 18 remaining) [2024-10-11 17:12:10,232 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 18 remaining) [2024-10-11 17:12:10,232 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 18 remaining) [2024-10-11 17:12:10,232 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 18 remaining) [2024-10-11 17:12:10,233 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 18 remaining) [2024-10-11 17:12:10,233 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 18 remaining) [2024-10-11 17:12:10,233 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 18 remaining) [2024-10-11 17:12:10,233 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 18 remaining) [2024-10-11 17:12:10,233 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 18 remaining) [2024-10-11 17:12:10,234 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 18 remaining) [2024-10-11 17:12:10,234 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 18 remaining) [2024-10-11 17:12:10,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 17:12:10,234 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1] [2024-10-11 17:12:10,238 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 17:12:10,238 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-11 17:12:10,301 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-11 17:12:10,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 370 places, 413 transitions, 842 flow [2024-10-11 17:12:10,448 INFO L124 PetriNetUnfolderBase]: 80/699 cut-off events. [2024-10-11 17:12:10,448 INFO L125 PetriNetUnfolderBase]: For 6/7 co-relation queries the response was YES. [2024-10-11 17:12:10,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 711 conditions, 699 events. 80/699 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3358 event pairs, 0 based on Foata normal form. 0/583 useless extension candidates. Maximal degree in co-relation 426. Up to 12 conditions per place. [2024-10-11 17:12:10,459 INFO L82 GeneralOperation]: Start removeDead. Operand has 370 places, 413 transitions, 842 flow [2024-10-11 17:12:10,474 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 370 places, 413 transitions, 842 flow [2024-10-11 17:12:10,475 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 17:12:10,475 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;@2b3d6bc9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 17:12:10,476 INFO L334 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2024-10-11 17:12:10,483 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 17:12:10,483 INFO L124 PetriNetUnfolderBase]: 8/74 cut-off events. [2024-10-11 17:12:10,484 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 17:12:10,484 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:12:10,484 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] [2024-10-11 17:12:10,484 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-11 17:12:10,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:12:10,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1929003184, now seen corresponding path program 1 times [2024-10-11 17:12:10,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:12:10,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947488468] [2024-10-11 17:12:10,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:12:10,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:12:10,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:12:10,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:12:10,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:12:10,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947488468] [2024-10-11 17:12:10,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947488468] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:12:10,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:12:10,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 17:12:10,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871419835] [2024-10-11 17:12:10,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:12:10,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 17:12:10,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:12:10,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 17:12:10,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 17:12:10,546 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 334 out of 413 [2024-10-11 17:12:10,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 413 transitions, 842 flow. Second operand has 3 states, 3 states have (on average 335.3333333333333) internal successors, (1006), 3 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:12:10,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:12:10,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 334 of 413 [2024-10-11 17:12:10,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:12:12,891 INFO L124 PetriNetUnfolderBase]: 1580/11854 cut-off events. [2024-10-11 17:12:12,892 INFO L125 PetriNetUnfolderBase]: For 89/89 co-relation queries the response was YES. [2024-10-11 17:12:12,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14315 conditions, 11854 events. 1580/11854 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 142667 event pairs, 1464 based on Foata normal form. 2927/13876 useless extension candidates. Maximal degree in co-relation 12718. Up to 2408 conditions per place. [2024-10-11 17:12:12,978 INFO L140 encePairwiseOnDemand]: 368/413 looper letters, 33 selfloop transitions, 2 changer transitions 1/366 dead transitions. [2024-10-11 17:12:12,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 366 transitions, 818 flow [2024-10-11 17:12:12,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 17:12:12,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 17:12:12,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1081 transitions. [2024-10-11 17:12:12,982 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8724778046811945 [2024-10-11 17:12:12,982 INFO L175 Difference]: Start difference. First operand has 370 places, 413 transitions, 842 flow. Second operand 3 states and 1081 transitions. [2024-10-11 17:12:12,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 366 transitions, 818 flow [2024-10-11 17:12:12,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 366 transitions, 818 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 17:12:12,988 INFO L231 Difference]: Finished difference. Result has 367 places, 365 transitions, 756 flow [2024-10-11 17:12:12,989 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=756, PETRI_PLACES=367, PETRI_TRANSITIONS=365} [2024-10-11 17:12:12,989 INFO L277 CegarLoopForPetriNet]: 370 programPoint places, -3 predicate places. [2024-10-11 17:12:12,990 INFO L471 AbstractCegarLoop]: Abstraction has has 367 places, 365 transitions, 756 flow [2024-10-11 17:12:12,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 335.3333333333333) internal successors, (1006), 3 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:12:12,990 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:12:12,990 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] [2024-10-11 17:12:12,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 17:12:12,991 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-11 17:12:12,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:12:12,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1869159422, now seen corresponding path program 1 times [2024-10-11 17:12:12,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:12:12,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486170619] [2024-10-11 17:12:12,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:12:12,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:12:13,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:12:13,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:12:13,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:12:13,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486170619] [2024-10-11 17:12:13,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486170619] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:12:13,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726942679] [2024-10-11 17:12:13,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:12:13,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:12:13,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:12:13,047 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:12:13,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 17:12:13,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:12:13,140 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 17:12:13,141 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:12:13,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:12:13,166 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:12:13,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:12:13,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726942679] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:12:13,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 17:12:13,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-11 17:12:13,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795065464] [2024-10-11 17:12:13,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 17:12:13,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 17:12:13,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:12:13,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 17:12:13,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 17:12:13,229 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 413 [2024-10-11 17:12:13,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 365 transitions, 756 flow. Second operand has 10 states, 10 states have (on average 332.8) internal successors, (3328), 10 states have internal predecessors, (3328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:12:13,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:12:13,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 413 [2024-10-11 17:12:13,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:12:15,038 INFO L124 PetriNetUnfolderBase]: 1580/11860 cut-off events. [2024-10-11 17:12:15,038 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2024-10-11 17:12:15,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14340 conditions, 11860 events. 1580/11860 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 142561 event pairs, 1464 based on Foata normal form. 2/10958 useless extension candidates. Maximal degree in co-relation 14303. Up to 2408 conditions per place. [2024-10-11 17:12:15,134 INFO L140 encePairwiseOnDemand]: 407/413 looper letters, 37 selfloop transitions, 9 changer transitions 0/373 dead transitions. [2024-10-11 17:12:15,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 373 transitions, 866 flow [2024-10-11 17:12:15,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 17:12:15,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 17:12:15,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3027 transitions. [2024-10-11 17:12:15,143 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.814366424535916 [2024-10-11 17:12:15,143 INFO L175 Difference]: Start difference. First operand has 367 places, 365 transitions, 756 flow. Second operand 9 states and 3027 transitions. [2024-10-11 17:12:15,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 373 transitions, 866 flow [2024-10-11 17:12:15,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 373 transitions, 864 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 17:12:15,151 INFO L231 Difference]: Finished difference. Result has 376 places, 371 transitions, 804 flow [2024-10-11 17:12:15,152 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=754, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=804, PETRI_PLACES=376, PETRI_TRANSITIONS=371} [2024-10-11 17:12:15,153 INFO L277 CegarLoopForPetriNet]: 370 programPoint places, 6 predicate places. [2024-10-11 17:12:15,153 INFO L471 AbstractCegarLoop]: Abstraction has has 376 places, 371 transitions, 804 flow [2024-10-11 17:12:15,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 332.8) internal successors, (3328), 10 states have internal predecessors, (3328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:12:15,154 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:12:15,155 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] [2024-10-11 17:12:15,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-11 17:12:15,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-11 17:12:15,356 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-11 17:12:15,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:12:15,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1610852546, now seen corresponding path program 2 times [2024-10-11 17:12:15,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:12:15,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961167110] [2024-10-11 17:12:15,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:12:15,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:12:15,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:12:15,495 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:12:15,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:12:15,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961167110] [2024-10-11 17:12:15,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961167110] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:12:15,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203147919] [2024-10-11 17:12:15,498 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 17:12:15,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:12:15,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:12:15,500 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:12:15,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 17:12:15,600 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 17:12:15,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 17:12:15,602 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-11 17:12:15,604 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:12:15,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-11 17:12:15,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-10-11 17:12:15,733 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 17:12:15,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-10-11 17:12:15,786 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 17:12:15,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-10-11 17:12:15,927 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-11 17:12:15,927 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 17:12:15,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203147919] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:12:15,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 17:12:15,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2024-10-11 17:12:15,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680473454] [2024-10-11 17:12:15,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:12:15,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 17:12:15,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:12:15,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 17:12:15,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-10-11 17:12:16,352 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 413 [2024-10-11 17:12:16,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 371 transitions, 804 flow. Second operand has 8 states, 8 states have (on average 262.125) internal successors, (2097), 8 states have internal predecessors, (2097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:12:16,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:12:16,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 413 [2024-10-11 17:12:16,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:12:41,127 INFO L124 PetriNetUnfolderBase]: 77253/188802 cut-off events. [2024-10-11 17:12:41,128 INFO L125 PetriNetUnfolderBase]: For 296/296 co-relation queries the response was YES. [2024-10-11 17:12:41,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304538 conditions, 188802 events. 77253/188802 cut-off events. For 296/296 co-relation queries the response was YES. Maximal size of possible extension queue 3719. Compared 2541365 event pairs, 70336 based on Foata normal form. 1/174105 useless extension candidates. Maximal degree in co-relation 304472. Up to 110272 conditions per place. [2024-10-11 17:12:42,903 INFO L140 encePairwiseOnDemand]: 401/413 looper letters, 188 selfloop transitions, 11 changer transitions 0/463 dead transitions. [2024-10-11 17:12:42,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 463 transitions, 1386 flow [2024-10-11 17:12:42,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 17:12:42,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-11 17:12:42,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2289 transitions. [2024-10-11 17:12:42,910 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6927966101694916 [2024-10-11 17:12:42,910 INFO L175 Difference]: Start difference. First operand has 376 places, 371 transitions, 804 flow. Second operand 8 states and 2289 transitions. [2024-10-11 17:12:42,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 463 transitions, 1386 flow [2024-10-11 17:12:42,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 463 transitions, 1380 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-11 17:12:42,919 INFO L231 Difference]: Finished difference. Result has 387 places, 379 transitions, 869 flow [2024-10-11 17:12:42,920 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=798, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=869, PETRI_PLACES=387, PETRI_TRANSITIONS=379} [2024-10-11 17:12:42,921 INFO L277 CegarLoopForPetriNet]: 370 programPoint places, 17 predicate places. [2024-10-11 17:12:42,921 INFO L471 AbstractCegarLoop]: Abstraction has has 387 places, 379 transitions, 869 flow [2024-10-11 17:12:42,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 262.125) internal successors, (2097), 8 states have internal predecessors, (2097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:12:42,922 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:12:42,922 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 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] [2024-10-11 17:12:42,941 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-11 17:12:43,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:12:43,123 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-11 17:12:43,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:12:43,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1561714772, now seen corresponding path program 1 times [2024-10-11 17:12:43,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:12:43,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104987420] [2024-10-11 17:12:43,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:12:43,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:12:43,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:12:43,283 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-11 17:12:43,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:12:43,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104987420] [2024-10-11 17:12:43,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104987420] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:12:43,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723682200] [2024-10-11 17:12:43,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:12:43,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:12:43,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:12:43,287 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:12:43,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 17:12:43,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:12:43,408 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 17:12:43,410 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:12:43,462 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-11 17:12:43,462 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:12:43,586 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-11 17:12:43,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723682200] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:12:43,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 17:12:43,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-10-11 17:12:43,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896459813] [2024-10-11 17:12:43,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 17:12:43,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 17:12:43,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:12:43,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 17:12:43,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-10-11 17:12:43,620 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 413 [2024-10-11 17:12:43,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 379 transitions, 869 flow. Second operand has 18 states, 18 states have (on average 332.94444444444446) internal successors, (5993), 18 states have internal predecessors, (5993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:12:43,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:12:43,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 413 [2024-10-11 17:12:43,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:12:45,571 INFO L124 PetriNetUnfolderBase]: 1611/12112 cut-off events. [2024-10-11 17:12:45,571 INFO L125 PetriNetUnfolderBase]: For 115/119 co-relation queries the response was YES. [2024-10-11 17:12:45,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14964 conditions, 12112 events. 1611/12112 cut-off events. For 115/119 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 146952 event pairs, 1492 based on Foata normal form. 4/11183 useless extension candidates. Maximal degree in co-relation 14821. Up to 2431 conditions per place. [2024-10-11 17:12:45,670 INFO L140 encePairwiseOnDemand]: 407/413 looper letters, 41 selfloop transitions, 21 changer transitions 0/397 dead transitions. [2024-10-11 17:12:45,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 397 transitions, 1081 flow [2024-10-11 17:12:45,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-11 17:12:45,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-11 17:12:45,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 7017 transitions. [2024-10-11 17:12:45,682 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8090626080940851 [2024-10-11 17:12:45,682 INFO L175 Difference]: Start difference. First operand has 387 places, 379 transitions, 869 flow. Second operand 21 states and 7017 transitions. [2024-10-11 17:12:45,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 397 transitions, 1081 flow [2024-10-11 17:12:45,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 397 transitions, 1079 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 17:12:45,692 INFO L231 Difference]: Finished difference. Result has 411 places, 392 transitions, 997 flow [2024-10-11 17:12:45,693 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=867, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=997, PETRI_PLACES=411, PETRI_TRANSITIONS=392} [2024-10-11 17:12:45,694 INFO L277 CegarLoopForPetriNet]: 370 programPoint places, 41 predicate places. [2024-10-11 17:12:45,694 INFO L471 AbstractCegarLoop]: Abstraction has has 411 places, 392 transitions, 997 flow [2024-10-11 17:12:45,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 332.94444444444446) internal successors, (5993), 18 states have internal predecessors, (5993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:12:45,697 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:12:45,697 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 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] [2024-10-11 17:12:45,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-11 17:12:45,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-11 17:12:45,898 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-11 17:12:45,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:12:45,898 INFO L85 PathProgramCache]: Analyzing trace with hash 391133484, now seen corresponding path program 2 times [2024-10-11 17:12:45,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:12:45,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851388134] [2024-10-11 17:12:45,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:12:45,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:12:45,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:12:46,175 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-11 17:12:46,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:12:46,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851388134] [2024-10-11 17:12:46,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851388134] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:12:46,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531151859] [2024-10-11 17:12:46,176 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 17:12:46,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:12:46,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:12:46,178 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:12:46,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-11 17:12:46,289 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 17:12:46,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 17:12:46,290 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 17:12:46,293 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:12:46,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-10-11 17:12:46,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2024-10-11 17:12:46,339 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 17:12:46,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2024-10-11 17:12:46,373 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 17:12:46,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2024-10-11 17:12:46,410 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2024-10-11 17:12:46,411 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 17:12:46,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531151859] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:12:46,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 17:12:46,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17] total 21 [2024-10-11 17:12:46,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612324411] [2024-10-11 17:12:46,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:12:46,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 17:12:46,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:12:46,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 17:12:46,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2024-10-11 17:12:46,735 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 413 [2024-10-11 17:12:46,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 392 transitions, 997 flow. Second operand has 6 states, 6 states have (on average 264.6666666666667) internal successors, (1588), 6 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:12:46,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:12:46,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 413 [2024-10-11 17:12:46,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand