./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 fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_77-tricky_address4_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dce9d71ca8bbe247a74e6b2653e5cdb882c6b8b5d902edf534df70d90ee806fe --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 13:50:48,885 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 13:50:48,932 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-11-20 13:50:48,934 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 13:50:48,935 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 13:50:48,973 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 13:50:48,974 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 13:50:48,975 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 13:50:48,975 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 13:50:48,976 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 13:50:48,977 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 13:50:48,977 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 13:50:48,977 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 13:50:48,978 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 13:50:48,978 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 13:50:48,979 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 13:50:48,980 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 13:50:48,989 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 13:50:48,989 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 13:50:48,989 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 13:50:48,989 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 13:50:48,990 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 13:50:48,990 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-20 13:50:48,990 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 13:50:48,990 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 13:50:48,990 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 13:50:48,991 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 13:50:48,991 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 13:50:48,991 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 13:50:48,991 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 13:50:48,991 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 13:50:48,991 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 13:50:48,992 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 13:50:48,992 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 13:50:48,992 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 13:50:48,993 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 13:50:48,993 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 13:50:48,993 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 13:50:48,993 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 13:50:48,993 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 13:50:48,993 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 13:50:48,994 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dce9d71ca8bbe247a74e6b2653e5cdb882c6b8b5d902edf534df70d90ee806fe [2024-11-20 13:50:49,186 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 13:50:49,206 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 13:50:49,208 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 13:50:49,209 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 13:50:49,209 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 13:50:49,210 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_77-tricky_address4_racing.i [2024-11-20 13:50:50,438 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 13:50:50,662 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 13:50:50,662 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_77-tricky_address4_racing.i [2024-11-20 13:50:50,682 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32e051eff/6cb99f1f17314763b4066bd978cedc96/FLAG42e4a64b9 [2024-11-20 13:50:50,997 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32e051eff/6cb99f1f17314763b4066bd978cedc96 [2024-11-20 13:50:50,999 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 13:50:51,000 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 13:50:51,001 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 13:50:51,001 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 13:50:51,006 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 13:50:51,006 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:50:50" (1/1) ... [2024-11-20 13:50:51,008 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a208ed0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:50:51, skipping insertion in model container [2024-11-20 13:50:51,009 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:50:50" (1/1) ... [2024-11-20 13:50:51,053 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 13:50:51,439 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 13:50:51,476 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 13:50:51,532 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 13:50:51,585 INFO L204 MainTranslator]: Completed translation [2024-11-20 13:50:51,586 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:50:51 WrapperNode [2024-11-20 13:50:51,586 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 13:50:51,587 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 13:50:51,587 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 13:50:51,588 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 13:50:51,593 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:50:51" (1/1) ... [2024-11-20 13:50:51,609 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:50:51" (1/1) ... [2024-11-20 13:50:51,640 INFO L138 Inliner]: procedures = 271, calls = 110, calls flagged for inlining = 7, calls inlined = 8, statements flattened = 348 [2024-11-20 13:50:51,641 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 13:50:51,644 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 13:50:51,644 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 13:50:51,644 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 13:50:51,651 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:50:51" (1/1) ... [2024-11-20 13:50:51,652 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:50:51" (1/1) ... [2024-11-20 13:50:51,659 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:50:51" (1/1) ... [2024-11-20 13:50:51,661 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:50:51" (1/1) ... [2024-11-20 13:50:51,680 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:50:51" (1/1) ... [2024-11-20 13:50:51,685 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:50:51" (1/1) ... [2024-11-20 13:50:51,687 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:50:51" (1/1) ... [2024-11-20 13:50:51,688 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:50:51" (1/1) ... [2024-11-20 13:50:51,693 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 13:50:51,694 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 13:50:51,694 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 13:50:51,696 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 13:50:51,696 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:50:51" (1/1) ... [2024-11-20 13:50:51,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 13:50:51,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:50:51,723 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-20 13:50:51,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-20 13:50:51,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-20 13:50:51,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-20 13:50:51,760 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-20 13:50:51,761 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-20 13:50:51,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-20 13:50:51,761 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-20 13:50:51,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 13:50:51,761 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-20 13:50:51,761 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-20 13:50:51,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-20 13:50:51,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 13:50:51,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 13:50:51,762 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 13:50:51,893 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 13:50:51,896 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 13:50:52,336 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 13:50:52,336 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 13:50:52,366 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 13:50:52,367 INFO L316 CfgBuilder]: Removed 23 assume(true) statements. [2024-11-20 13:50:52,367 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:50:52 BoogieIcfgContainer [2024-11-20 13:50:52,367 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 13:50:52,369 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 13:50:52,369 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 13:50:52,372 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 13:50:52,372 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 01:50:50" (1/3) ... [2024-11-20 13:50:52,372 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@504606af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 01:50:52, skipping insertion in model container [2024-11-20 13:50:52,372 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:50:51" (2/3) ... [2024-11-20 13:50:52,373 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@504606af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 01:50:52, skipping insertion in model container [2024-11-20 13:50:52,373 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:50:52" (3/3) ... [2024-11-20 13:50:52,374 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_77-tricky_address4_racing.i [2024-11-20 13:50:52,388 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 13:50:52,388 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-11-20 13:50:52,388 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 13:50:52,465 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-20 13:50:52,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 324 places, 354 transitions, 715 flow [2024-11-20 13:50:52,629 INFO L124 PetriNetUnfolderBase]: 48/483 cut-off events. [2024-11-20 13:50:52,630 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-20 13:50:52,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 488 conditions, 483 events. 48/483 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1659 event pairs, 0 based on Foata normal form. 0/413 useless extension candidates. Maximal degree in co-relation 248. Up to 8 conditions per place. [2024-11-20 13:50:52,641 INFO L82 GeneralOperation]: Start removeDead. Operand has 324 places, 354 transitions, 715 flow [2024-11-20 13:50:52,652 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 324 places, 354 transitions, 715 flow [2024-11-20 13:50:52,662 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 13:50:52,668 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;@7631fd5b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 13:50:52,668 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-20 13:50:52,683 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 13:50:52,684 INFO L124 PetriNetUnfolderBase]: 8/133 cut-off events. [2024-11-20 13:50:52,684 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 13:50:52,684 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:50:52,684 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:50:52,685 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)] === [2024-11-20 13:50:52,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:50:52,690 INFO L85 PathProgramCache]: Analyzing trace with hash 709230511, now seen corresponding path program 1 times [2024-11-20 13:50:52,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:50:52,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185207835] [2024-11-20 13:50:52,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:50:52,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:50:52,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:50:53,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:50:53,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:50:53,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185207835] [2024-11-20 13:50:53,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185207835] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:50:53,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:50:53,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 13:50:53,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126984298] [2024-11-20 13:50:53,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:50:53,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 13:50:53,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:50:53,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 13:50:53,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 13:50:53,070 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 354 [2024-11-20 13:50:53,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 354 transitions, 715 flow. Second operand has 3 states, 3 states have (on average 300.3333333333333) internal successors, (901), 3 states have internal predecessors, (901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:50:53,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 13:50:53,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 354 [2024-11-20 13:50:53,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 13:50:53,304 INFO L124 PetriNetUnfolderBase]: 85/1310 cut-off events. [2024-11-20 13:50:53,304 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-20 13:50:53,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1494 conditions, 1310 events. 85/1310 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 8317 event pairs, 72 based on Foata normal form. 205/1399 useless extension candidates. Maximal degree in co-relation 1250. Up to 178 conditions per place. [2024-11-20 13:50:53,315 INFO L140 encePairwiseOnDemand]: 322/354 looper letters, 23 selfloop transitions, 2 changer transitions 1/322 dead transitions. [2024-11-20 13:50:53,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 322 transitions, 701 flow [2024-11-20 13:50:53,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 13:50:53,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 13:50:53,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 953 transitions. [2024-11-20 13:50:53,333 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8973634651600754 [2024-11-20 13:50:53,335 INFO L175 Difference]: Start difference. First operand has 324 places, 354 transitions, 715 flow. Second operand 3 states and 953 transitions. [2024-11-20 13:50:53,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 322 transitions, 701 flow [2024-11-20 13:50:53,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 322 transitions, 701 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-20 13:50:53,361 INFO L231 Difference]: Finished difference. Result has 323 places, 321 transitions, 659 flow [2024-11-20 13:50:53,363 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=649, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=659, PETRI_PLACES=323, PETRI_TRANSITIONS=321} [2024-11-20 13:50:53,367 INFO L277 CegarLoopForPetriNet]: 324 programPoint places, -1 predicate places. [2024-11-20 13:50:53,368 INFO L471 AbstractCegarLoop]: Abstraction has has 323 places, 321 transitions, 659 flow [2024-11-20 13:50:53,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 300.3333333333333) internal successors, (901), 3 states have internal predecessors, (901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:50:53,369 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:50:53,370 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:50:53,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 13:50:53,370 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)] === [2024-11-20 13:50:53,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:50:53,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1439344414, now seen corresponding path program 1 times [2024-11-20 13:50:53,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:50:53,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625903117] [2024-11-20 13:50:53,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:50:53,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:50:53,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:50:53,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:50:53,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:50:53,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625903117] [2024-11-20 13:50:53,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625903117] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:50:53,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733895087] [2024-11-20 13:50:53,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:50:53,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:50:53,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:50:53,535 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 13:50:53,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 13:50:53,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:50:53,618 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 13:50:53,623 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:50:53,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:50:53,684 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 13:50:53,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:50:53,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733895087] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 13:50:53,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 13:50:53,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-20 13:50:53,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870656872] [2024-11-20 13:50:53,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 13:50:53,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 13:50:53,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:50:53,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 13:50:53,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-20 13:50:53,747 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 354 [2024-11-20 13:50:53,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 321 transitions, 659 flow. Second operand has 10 states, 10 states have (on average 297.8) internal successors, (2978), 10 states have internal predecessors, (2978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:50:53,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 13:50:53,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 354 [2024-11-20 13:50:53,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 13:50:54,037 INFO L124 PetriNetUnfolderBase]: 85/1316 cut-off events. [2024-11-20 13:50:54,037 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-11-20 13:50:54,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1519 conditions, 1316 events. 85/1316 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 8311 event pairs, 72 based on Foata normal form. 2/1203 useless extension candidates. Maximal degree in co-relation 1424. Up to 178 conditions per place. [2024-11-20 13:50:54,042 INFO L140 encePairwiseOnDemand]: 348/354 looper letters, 27 selfloop transitions, 9 changer transitions 0/329 dead transitions. [2024-11-20 13:50:54,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 329 transitions, 749 flow [2024-11-20 13:50:54,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 13:50:54,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-20 13:50:54,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2702 transitions. [2024-11-20 13:50:54,047 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8480853735091023 [2024-11-20 13:50:54,047 INFO L175 Difference]: Start difference. First operand has 323 places, 321 transitions, 659 flow. Second operand 9 states and 2702 transitions. [2024-11-20 13:50:54,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 329 transitions, 749 flow [2024-11-20 13:50:54,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 329 transitions, 747 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 13:50:54,053 INFO L231 Difference]: Finished difference. Result has 332 places, 327 transitions, 707 flow [2024-11-20 13:50:54,054 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=657, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=707, PETRI_PLACES=332, PETRI_TRANSITIONS=327} [2024-11-20 13:50:54,055 INFO L277 CegarLoopForPetriNet]: 324 programPoint places, 8 predicate places. [2024-11-20 13:50:54,055 INFO L471 AbstractCegarLoop]: Abstraction has has 332 places, 327 transitions, 707 flow [2024-11-20 13:50:54,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 297.8) internal successors, (2978), 10 states have internal predecessors, (2978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:50:54,057 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:50:54,057 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:50:54,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-20 13:50:54,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:50:54,259 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)] === [2024-11-20 13:50:54,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:50:54,260 INFO L85 PathProgramCache]: Analyzing trace with hash -909527618, now seen corresponding path program 2 times [2024-11-20 13:50:54,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:50:54,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716195787] [2024-11-20 13:50:54,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:50:54,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:50:54,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:50:54,443 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:50:54,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:50:54,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716195787] [2024-11-20 13:50:54,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716195787] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:50:54,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067816163] [2024-11-20 13:50:54,447 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 13:50:54,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:50:54,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:50:54,451 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 13:50:54,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 13:50:54,531 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-20 13:50:54,531 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 13:50:54,533 INFO L255 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-20 13:50:54,536 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:50:54,604 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 [2024-11-20 13:50:54,630 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 [2024-11-20 13:50:54,662 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 13:50:54,662 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 [2024-11-20 13:50:54,705 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 13:50:54,705 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 [2024-11-20 13:50:54,738 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-20 13:50:54,738 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 13:50:54,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067816163] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:50:54,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 13:50:54,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2024-11-20 13:50:54,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992196781] [2024-11-20 13:50:54,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:50:54,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 13:50:54,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:50:54,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 13:50:54,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-20 13:50:55,052 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 354 [2024-11-20 13:50:55,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 327 transitions, 707 flow. Second operand has 8 states, 8 states have (on average 247.125) internal successors, (1977), 8 states have internal predecessors, (1977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:50:55,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 13:50:55,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 354 [2024-11-20 13:50:55,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 13:50:55,645 INFO L124 PetriNetUnfolderBase]: 1305/5058 cut-off events. [2024-11-20 13:50:55,645 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-20 13:50:55,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7680 conditions, 5058 events. 1305/5058 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 44532 event pairs, 1148 based on Foata normal form. 1/4592 useless extension candidates. Maximal degree in co-relation 7556. Up to 2434 conditions per place. [2024-11-20 13:50:55,662 INFO L140 encePairwiseOnDemand]: 342/354 looper letters, 127 selfloop transitions, 11 changer transitions 2/390 dead transitions. [2024-11-20 13:50:55,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 390 transitions, 1113 flow [2024-11-20 13:50:55,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 13:50:55,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-20 13:50:55,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2110 transitions. [2024-11-20 13:50:55,666 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7450564971751412 [2024-11-20 13:50:55,666 INFO L175 Difference]: Start difference. First operand has 332 places, 327 transitions, 707 flow. Second operand 8 states and 2110 transitions. [2024-11-20 13:50:55,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 390 transitions, 1113 flow [2024-11-20 13:50:55,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 390 transitions, 1107 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-20 13:50:55,672 INFO L231 Difference]: Finished difference. Result has 343 places, 334 transitions, 768 flow [2024-11-20 13:50:55,673 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=701, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=768, PETRI_PLACES=343, PETRI_TRANSITIONS=334} [2024-11-20 13:50:55,674 INFO L277 CegarLoopForPetriNet]: 324 programPoint places, 19 predicate places. [2024-11-20 13:50:55,674 INFO L471 AbstractCegarLoop]: Abstraction has has 343 places, 334 transitions, 768 flow [2024-11-20 13:50:55,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 247.125) internal successors, (1977), 8 states have internal predecessors, (1977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:50:55,675 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:50:55,675 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:50:55,683 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-20 13:50:55,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-20 13:50:55,880 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)] === [2024-11-20 13:50:55,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:50:55,881 INFO L85 PathProgramCache]: Analyzing trace with hash 181443847, now seen corresponding path program 1 times [2024-11-20 13:50:55,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:50:55,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356488459] [2024-11-20 13:50:55,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:50:55,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:50:55,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:50:56,055 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-20 13:50:56,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:50:56,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356488459] [2024-11-20 13:50:56,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356488459] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:50:56,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489007088] [2024-11-20 13:50:56,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:50:56,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:50:56,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:50:56,058 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 13:50:56,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 13:50:56,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:50:56,140 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-20 13:50:56,142 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:50:56,171 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-20 13:50:56,171 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 13:50:56,298 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-20 13:50:56,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489007088] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 13:50:56,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 13:50:56,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-11-20 13:50:56,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721606931] [2024-11-20 13:50:56,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 13:50:56,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-20 13:50:56,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:50:56,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-20 13:50:56,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-20 13:50:56,324 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 354 [2024-11-20 13:50:56,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 334 transitions, 768 flow. Second operand has 18 states, 18 states have (on average 297.94444444444446) internal successors, (5363), 18 states have internal predecessors, (5363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:50:56,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 13:50:56,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 354 [2024-11-20 13:50:56,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 13:50:56,589 INFO L124 PetriNetUnfolderBase]: 88/1325 cut-off events. [2024-11-20 13:50:56,589 INFO L125 PetriNetUnfolderBase]: For 30/34 co-relation queries the response was YES. [2024-11-20 13:50:56,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1631 conditions, 1325 events. 88/1325 cut-off events. For 30/34 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 8486 event pairs, 74 based on Foata normal form. 4/1218 useless extension candidates. Maximal degree in co-relation 1430. Up to 175 conditions per place. [2024-11-20 13:50:56,596 INFO L140 encePairwiseOnDemand]: 348/354 looper letters, 31 selfloop transitions, 21 changer transitions 0/352 dead transitions. [2024-11-20 13:50:56,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 352 transitions, 960 flow [2024-11-20 13:50:56,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-20 13:50:56,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-20 13:50:56,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 6272 transitions. [2024-11-20 13:50:56,604 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8436911487758946 [2024-11-20 13:50:56,604 INFO L175 Difference]: Start difference. First operand has 343 places, 334 transitions, 768 flow. Second operand 21 states and 6272 transitions. [2024-11-20 13:50:56,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 352 transitions, 960 flow [2024-11-20 13:50:56,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 352 transitions, 953 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 13:50:56,609 INFO L231 Difference]: Finished difference. Result has 366 places, 347 transitions, 891 flow [2024-11-20 13:50:56,609 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=761, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=891, PETRI_PLACES=366, PETRI_TRANSITIONS=347} [2024-11-20 13:50:56,610 INFO L277 CegarLoopForPetriNet]: 324 programPoint places, 42 predicate places. [2024-11-20 13:50:56,610 INFO L471 AbstractCegarLoop]: Abstraction has has 366 places, 347 transitions, 891 flow [2024-11-20 13:50:56,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 297.94444444444446) internal successors, (5363), 18 states have internal predecessors, (5363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:50:56,613 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:50:56,613 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:50:56,620 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-20 13:50:56,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:50:56,818 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)] === [2024-11-20 13:50:56,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:50:56,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1248408135, now seen corresponding path program 2 times [2024-11-20 13:50:56,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:50:56,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373264624] [2024-11-20 13:50:56,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:50:56,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:50:56,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:50:57,109 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-20 13:50:57,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:50:57,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373264624] [2024-11-20 13:50:57,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373264624] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:50:57,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146486401] [2024-11-20 13:50:57,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 13:50:57,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:50:57,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:50:57,113 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 13:50:57,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-20 13:50:57,187 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-20 13:50:57,187 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 13:50:57,188 INFO L255 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-20 13:50:57,192 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:50:57,202 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 [2024-11-20 13:50:57,217 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 [2024-11-20 13:50:57,240 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 13:50:57,241 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 [2024-11-20 13:50:57,276 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 13:50:57,276 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 [2024-11-20 13:50:57,306 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2024-11-20 13:50:57,307 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 13:50:57,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146486401] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:50:57,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 13:50:57,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17] total 21 [2024-11-20 13:50:57,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327460313] [2024-11-20 13:50:57,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:50:57,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 13:50:57,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:50:57,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 13:50:57,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2024-11-20 13:50:57,543 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 354 [2024-11-20 13:50:57,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 347 transitions, 891 flow. Second operand has 6 states, 6 states have (on average 249.66666666666666) internal successors, (1498), 6 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:50:57,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 13:50:57,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 354 [2024-11-20 13:50:57,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 13:50:58,303 INFO L124 PetriNetUnfolderBase]: 1362/5146 cut-off events. [2024-11-20 13:50:58,303 INFO L125 PetriNetUnfolderBase]: For 281/285 co-relation queries the response was YES. [2024-11-20 13:50:58,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8333 conditions, 5146 events. 1362/5146 cut-off events. For 281/285 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 45156 event pairs, 911 based on Foata normal form. 33/4764 useless extension candidates. Maximal degree in co-relation 8125. Up to 2520 conditions per place. [2024-11-20 13:50:58,389 INFO L140 encePairwiseOnDemand]: 327/354 looper letters, 107 selfloop transitions, 92 changer transitions 0/463 dead transitions. [2024-11-20 13:50:58,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 463 transitions, 1543 flow [2024-11-20 13:50:58,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 13:50:58,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 13:50:58,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1676 transitions. [2024-11-20 13:50:58,395 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7890772128060264 [2024-11-20 13:50:58,396 INFO L175 Difference]: Start difference. First operand has 366 places, 347 transitions, 891 flow. Second operand 6 states and 1676 transitions. [2024-11-20 13:50:58,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 463 transitions, 1543 flow [2024-11-20 13:50:58,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 463 transitions, 1519 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-11-20 13:50:58,404 INFO L231 Difference]: Finished difference. Result has 370 places, 431 transitions, 1475 flow [2024-11-20 13:50:58,405 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=867, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1475, PETRI_PLACES=370, PETRI_TRANSITIONS=431} [2024-11-20 13:50:58,405 INFO L277 CegarLoopForPetriNet]: 324 programPoint places, 46 predicate places. [2024-11-20 13:50:58,405 INFO L471 AbstractCegarLoop]: Abstraction has has 370 places, 431 transitions, 1475 flow [2024-11-20 13:50:58,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 249.66666666666666) internal successors, (1498), 6 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:50:58,406 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:50:58,407 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:50:58,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-20 13:50:58,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:50:58,607 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)] === [2024-11-20 13:50:58,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:50:58,608 INFO L85 PathProgramCache]: Analyzing trace with hash 45947571, now seen corresponding path program 1 times [2024-11-20 13:50:58,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:50:58,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531047141] [2024-11-20 13:50:58,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:50:58,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:50:58,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:50:58,866 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-20 13:50:58,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:50:58,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531047141] [2024-11-20 13:50:58,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531047141] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:50:58,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170758047] [2024-11-20 13:50:58,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:50:58,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:50:58,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:50:58,869 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 13:50:58,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-20 13:50:58,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:50:58,956 INFO L255 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-20 13:50:58,958 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:50:59,015 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-20 13:50:59,015 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 13:50:59,162 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-20 13:50:59,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170758047] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 13:50:59,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 13:50:59,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2024-11-20 13:50:59,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199978704] [2024-11-20 13:50:59,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 13:50:59,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-20 13:50:59,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:50:59,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-20 13:50:59,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-11-20 13:50:59,188 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 354 [2024-11-20 13:50:59,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 431 transitions, 1475 flow. Second operand has 23 states, 23 states have (on average 298.04347826086956) internal successors, (6855), 23 states have internal predecessors, (6855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:50:59,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 13:50:59,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 354 [2024-11-20 13:50:59,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 13:50:59,644 INFO L124 PetriNetUnfolderBase]: 240/1956 cut-off events. [2024-11-20 13:50:59,645 INFO L125 PetriNetUnfolderBase]: For 500/562 co-relation queries the response was YES. [2024-11-20 13:50:59,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3091 conditions, 1956 events. 240/1956 cut-off events. For 500/562 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 14313 event pairs, 72 based on Foata normal form. 3/1818 useless extension candidates. Maximal degree in co-relation 2803. Up to 232 conditions per place. [2024-11-20 13:50:59,656 INFO L140 encePairwiseOnDemand]: 348/354 looper letters, 34 selfloop transitions, 30 changer transitions 0/448 dead transitions. [2024-11-20 13:50:59,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 448 transitions, 1725 flow [2024-11-20 13:50:59,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-20 13:50:59,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-20 13:50:59,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 8947 transitions. [2024-11-20 13:50:59,668 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.842467043314501 [2024-11-20 13:50:59,668 INFO L175 Difference]: Start difference. First operand has 370 places, 431 transitions, 1475 flow. Second operand 30 states and 8947 transitions. [2024-11-20 13:50:59,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 448 transitions, 1725 flow [2024-11-20 13:50:59,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 448 transitions, 1707 flow, removed 9 selfloop flow, removed 0 redundant places. [2024-11-20 13:50:59,704 INFO L231 Difference]: Finished difference. Result has 403 places, 441 transitions, 1609 flow [2024-11-20 13:50:59,705 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=1457, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1609, PETRI_PLACES=403, PETRI_TRANSITIONS=441} [2024-11-20 13:50:59,705 INFO L277 CegarLoopForPetriNet]: 324 programPoint places, 79 predicate places. [2024-11-20 13:50:59,706 INFO L471 AbstractCegarLoop]: Abstraction has has 403 places, 441 transitions, 1609 flow [2024-11-20 13:50:59,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 298.04347826086956) internal successors, (6855), 23 states have internal predecessors, (6855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:50:59,708 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:50:59,708 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:50:59,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-20 13:50:59,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:50:59,911 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)] === [2024-11-20 13:50:59,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:50:59,911 INFO L85 PathProgramCache]: Analyzing trace with hash -137490686, now seen corresponding path program 2 times [2024-11-20 13:50:59,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:50:59,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407559607] [2024-11-20 13:50:59,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:50:59,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:50:59,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 13:50:59,945 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 13:50:59,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 13:51:00,007 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 13:51:00,009 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-20 13:51:00,010 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2024-11-20 13:51:00,011 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (16 of 18 remaining) [2024-11-20 13:51:00,011 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (15 of 18 remaining) [2024-11-20 13:51:00,011 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (14 of 18 remaining) [2024-11-20 13:51:00,012 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (13 of 18 remaining) [2024-11-20 13:51:00,012 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (12 of 18 remaining) [2024-11-20 13:51:00,015 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (11 of 18 remaining) [2024-11-20 13:51:00,015 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (10 of 18 remaining) [2024-11-20 13:51:00,015 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 18 remaining) [2024-11-20 13:51:00,015 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 18 remaining) [2024-11-20 13:51:00,015 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 18 remaining) [2024-11-20 13:51:00,016 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 18 remaining) [2024-11-20 13:51:00,016 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 18 remaining) [2024-11-20 13:51:00,016 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 18 remaining) [2024-11-20 13:51:00,016 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 18 remaining) [2024-11-20 13:51:00,016 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 18 remaining) [2024-11-20 13:51:00,016 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 18 remaining) [2024-11-20 13:51:00,016 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 18 remaining) [2024-11-20 13:51:00,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-20 13:51:00,016 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1] [2024-11-20 13:51:00,018 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-20 13:51:00,018 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-20 13:51:00,060 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-20 13:51:00,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 429 places, 472 transitions, 960 flow [2024-11-20 13:51:00,128 INFO L124 PetriNetUnfolderBase]: 80/758 cut-off events. [2024-11-20 13:51:00,128 INFO L125 PetriNetUnfolderBase]: For 6/7 co-relation queries the response was YES. [2024-11-20 13:51:00,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 770 conditions, 758 events. 80/758 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3374 event pairs, 0 based on Foata normal form. 0/642 useless extension candidates. Maximal degree in co-relation 485. Up to 12 conditions per place. [2024-11-20 13:51:00,137 INFO L82 GeneralOperation]: Start removeDead. Operand has 429 places, 472 transitions, 960 flow [2024-11-20 13:51:00,143 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 429 places, 472 transitions, 960 flow [2024-11-20 13:51:00,144 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 13:51:00,145 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;@7631fd5b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 13:51:00,145 INFO L334 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2024-11-20 13:51:00,150 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 13:51:00,150 INFO L124 PetriNetUnfolderBase]: 8/133 cut-off events. [2024-11-20 13:51:00,150 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 13:51:00,150 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:51:00,150 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:51:00,151 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)] === [2024-11-20 13:51:00,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:51:00,151 INFO L85 PathProgramCache]: Analyzing trace with hash 175079599, now seen corresponding path program 1 times [2024-11-20 13:51:00,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:51:00,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547031848] [2024-11-20 13:51:00,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:51:00,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:51:00,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:51:00,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:51:00,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:51:00,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547031848] [2024-11-20 13:51:00,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547031848] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:51:00,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:51:00,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 13:51:00,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804413839] [2024-11-20 13:51:00,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:51:00,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 13:51:00,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:51:00,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 13:51:00,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 13:51:00,221 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 393 out of 472 [2024-11-20 13:51:00,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 472 transitions, 960 flow. Second operand has 3 states, 3 states have (on average 394.3333333333333) internal successors, (1183), 3 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:51:00,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 13:51:00,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 393 of 472 [2024-11-20 13:51:00,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 13:51:01,722 INFO L124 PetriNetUnfolderBase]: 1580/11913 cut-off events. [2024-11-20 13:51:01,722 INFO L125 PetriNetUnfolderBase]: For 89/89 co-relation queries the response was YES. [2024-11-20 13:51:01,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14374 conditions, 11913 events. 1580/11913 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 142637 event pairs, 1464 based on Foata normal form. 2927/13935 useless extension candidates. Maximal degree in co-relation 12718. Up to 2408 conditions per place. [2024-11-20 13:51:01,795 INFO L140 encePairwiseOnDemand]: 427/472 looper letters, 33 selfloop transitions, 2 changer transitions 1/425 dead transitions. [2024-11-20 13:51:01,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 425 transitions, 936 flow [2024-11-20 13:51:01,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 13:51:01,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 13:51:01,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1258 transitions. [2024-11-20 13:51:01,797 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8884180790960452 [2024-11-20 13:51:01,797 INFO L175 Difference]: Start difference. First operand has 429 places, 472 transitions, 960 flow. Second operand 3 states and 1258 transitions. [2024-11-20 13:51:01,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 425 transitions, 936 flow [2024-11-20 13:51:01,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 425 transitions, 936 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-20 13:51:01,802 INFO L231 Difference]: Finished difference. Result has 426 places, 424 transitions, 874 flow [2024-11-20 13:51:01,803 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=472, PETRI_DIFFERENCE_MINUEND_FLOW=864, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=874, PETRI_PLACES=426, PETRI_TRANSITIONS=424} [2024-11-20 13:51:01,803 INFO L277 CegarLoopForPetriNet]: 429 programPoint places, -3 predicate places. [2024-11-20 13:51:01,803 INFO L471 AbstractCegarLoop]: Abstraction has has 426 places, 424 transitions, 874 flow [2024-11-20 13:51:01,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 394.3333333333333) internal successors, (1183), 3 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:51:01,804 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:51:01,804 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:51:01,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-20 13:51:01,804 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)] === [2024-11-20 13:51:01,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:51:01,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1665323510, now seen corresponding path program 1 times [2024-11-20 13:51:01,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:51:01,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343789223] [2024-11-20 13:51:01,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:51:01,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:51:01,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:51:01,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:51:01,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:51:01,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343789223] [2024-11-20 13:51:01,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343789223] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:51:01,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762759682] [2024-11-20 13:51:01,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:51:01,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:51:01,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:51:01,945 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 13:51:01,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-20 13:51:02,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:51:02,020 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 13:51:02,021 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:51:02,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:51:02,036 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 13:51:02,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:51:02,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762759682] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 13:51:02,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 13:51:02,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-20 13:51:02,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923190566] [2024-11-20 13:51:02,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 13:51:02,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 13:51:02,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:51:02,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 13:51:02,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-20 13:51:02,073 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 390 out of 472 [2024-11-20 13:51:02,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 424 transitions, 874 flow. Second operand has 10 states, 10 states have (on average 391.8) internal successors, (3918), 10 states have internal predecessors, (3918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:51:02,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 13:51:02,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 390 of 472 [2024-11-20 13:51:02,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 13:51:03,633 INFO L124 PetriNetUnfolderBase]: 1580/11919 cut-off events. [2024-11-20 13:51:03,634 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2024-11-20 13:51:03,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14399 conditions, 11919 events. 1580/11919 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 142579 event pairs, 1464 based on Foata normal form. 2/11017 useless extension candidates. Maximal degree in co-relation 14303. Up to 2408 conditions per place. [2024-11-20 13:51:03,704 INFO L140 encePairwiseOnDemand]: 466/472 looper letters, 37 selfloop transitions, 9 changer transitions 0/432 dead transitions. [2024-11-20 13:51:03,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 432 transitions, 984 flow [2024-11-20 13:51:03,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 13:51:03,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-20 13:51:03,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3558 transitions. [2024-11-20 13:51:03,709 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8375706214689266 [2024-11-20 13:51:03,710 INFO L175 Difference]: Start difference. First operand has 426 places, 424 transitions, 874 flow. Second operand 9 states and 3558 transitions. [2024-11-20 13:51:03,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 432 transitions, 984 flow [2024-11-20 13:51:03,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 432 transitions, 982 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 13:51:03,715 INFO L231 Difference]: Finished difference. Result has 435 places, 430 transitions, 922 flow [2024-11-20 13:51:03,715 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=472, PETRI_DIFFERENCE_MINUEND_FLOW=872, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=922, PETRI_PLACES=435, PETRI_TRANSITIONS=430} [2024-11-20 13:51:03,716 INFO L277 CegarLoopForPetriNet]: 429 programPoint places, 6 predicate places. [2024-11-20 13:51:03,716 INFO L471 AbstractCegarLoop]: Abstraction has has 435 places, 430 transitions, 922 flow [2024-11-20 13:51:03,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 391.8) internal successors, (3918), 10 states have internal predecessors, (3918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:51:03,717 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:51:03,717 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:51:03,731 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-20 13:51:03,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:51:03,922 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)] === [2024-11-20 13:51:03,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:51:03,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1659774570, now seen corresponding path program 2 times [2024-11-20 13:51:03,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:51:03,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916634006] [2024-11-20 13:51:03,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:51:03,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:51:03,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:51:04,028 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:51:04,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:51:04,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916634006] [2024-11-20 13:51:04,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916634006] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:51:04,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123016281] [2024-11-20 13:51:04,029 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 13:51:04,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:51:04,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:51:04,031 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 13:51:04,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-20 13:51:04,111 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-20 13:51:04,112 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 13:51:04,113 INFO L255 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-20 13:51:04,115 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:51:04,144 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 [2024-11-20 13:51:04,160 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 [2024-11-20 13:51:04,181 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 13:51:04,181 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 [2024-11-20 13:51:04,209 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 13:51:04,209 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 [2024-11-20 13:51:04,235 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-20 13:51:04,235 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 13:51:04,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123016281] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:51:04,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 13:51:04,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2024-11-20 13:51:04,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725221541] [2024-11-20 13:51:04,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:51:04,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 13:51:04,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:51:04,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 13:51:04,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-20 13:51:04,504 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 320 out of 472 [2024-11-20 13:51:04,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 430 transitions, 922 flow. Second operand has 8 states, 8 states have (on average 321.125) internal successors, (2569), 8 states have internal predecessors, (2569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:51:04,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 13:51:04,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 320 of 472 [2024-11-20 13:51:04,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 13:51:28,488 INFO L124 PetriNetUnfolderBase]: 77253/188861 cut-off events. [2024-11-20 13:51:28,488 INFO L125 PetriNetUnfolderBase]: For 296/296 co-relation queries the response was YES. [2024-11-20 13:51:29,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304597 conditions, 188861 events. 77253/188861 cut-off events. For 296/296 co-relation queries the response was YES. Maximal size of possible extension queue 3719. Compared 2541727 event pairs, 70336 based on Foata normal form. 1/174164 useless extension candidates. Maximal degree in co-relation 304472. Up to 110272 conditions per place. [2024-11-20 13:51:29,663 INFO L140 encePairwiseOnDemand]: 460/472 looper letters, 188 selfloop transitions, 11 changer transitions 0/522 dead transitions. [2024-11-20 13:51:29,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 522 transitions, 1504 flow [2024-11-20 13:51:29,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 13:51:29,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-20 13:51:29,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2761 transitions. [2024-11-20 13:51:29,668 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.731197033898305 [2024-11-20 13:51:29,668 INFO L175 Difference]: Start difference. First operand has 435 places, 430 transitions, 922 flow. Second operand 8 states and 2761 transitions. [2024-11-20 13:51:29,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 522 transitions, 1504 flow [2024-11-20 13:51:29,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 522 transitions, 1498 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-20 13:51:29,675 INFO L231 Difference]: Finished difference. Result has 446 places, 438 transitions, 987 flow [2024-11-20 13:51:29,675 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=472, PETRI_DIFFERENCE_MINUEND_FLOW=916, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=987, PETRI_PLACES=446, PETRI_TRANSITIONS=438} [2024-11-20 13:51:29,676 INFO L277 CegarLoopForPetriNet]: 429 programPoint places, 17 predicate places. [2024-11-20 13:51:29,676 INFO L471 AbstractCegarLoop]: Abstraction has has 446 places, 438 transitions, 987 flow [2024-11-20 13:51:29,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 321.125) internal successors, (2569), 8 states have internal predecessors, (2569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:51:29,677 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:51:29,677 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:51:29,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-20 13:51:29,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:51:29,882 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)] === [2024-11-20 13:51:29,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:51:29,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1502060565, now seen corresponding path program 1 times [2024-11-20 13:51:29,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:51:29,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394726881] [2024-11-20 13:51:29,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:51:29,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:51:29,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:51:29,982 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-20 13:51:29,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:51:29,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394726881] [2024-11-20 13:51:29,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394726881] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:51:29,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300960901] [2024-11-20 13:51:29,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:51:29,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:51:29,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:51:29,985 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 13:51:29,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-20 13:51:30,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:51:30,080 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-20 13:51:30,082 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:51:30,111 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-20 13:51:30,111 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 13:51:30,173 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-20 13:51:30,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300960901] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 13:51:30,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 13:51:30,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-11-20 13:51:30,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361651500] [2024-11-20 13:51:30,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 13:51:30,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-20 13:51:30,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:51:30,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-20 13:51:30,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-20 13:51:30,203 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 390 out of 472 [2024-11-20 13:51:30,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 438 transitions, 987 flow. Second operand has 18 states, 18 states have (on average 391.94444444444446) internal successors, (7055), 18 states have internal predecessors, (7055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:51:30,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 13:51:30,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 390 of 472 [2024-11-20 13:51:30,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand