./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/pthread-wmm/safe002_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe002_rmo.oepc.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 303fb09b32b7ab2953a798b1c14f8a25fd3d0e1788678487baddbc8a976b0d5f --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 06:42:09,707 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 06:42:09,770 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-11-09 06:42:09,777 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 06:42:09,778 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 06:42:09,794 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 06:42:09,795 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 06:42:09,795 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 06:42:09,796 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 06:42:09,796 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 06:42:09,797 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 06:42:09,797 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 06:42:09,797 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 06:42:09,798 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 06:42:09,798 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 06:42:09,799 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 06:42:09,799 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 06:42:09,799 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 06:42:09,799 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 06:42:09,800 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 06:42:09,800 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 06:42:09,805 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 06:42:09,806 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-09 06:42:09,806 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 06:42:09,806 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 06:42:09,806 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 06:42:09,807 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 06:42:09,807 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 06:42:09,807 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 06:42:09,808 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 06:42:09,808 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 06:42:09,808 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 06:42:09,808 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 06:42:09,809 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 06:42:09,809 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 06:42:09,809 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 06:42:09,809 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 06:42:09,809 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 06:42:09,810 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 06:42:09,810 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 06:42:09,810 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 06:42:09,810 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 303fb09b32b7ab2953a798b1c14f8a25fd3d0e1788678487baddbc8a976b0d5f [2024-11-09 06:42:10,000 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 06:42:10,024 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 06:42:10,027 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 06:42:10,028 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 06:42:10,029 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 06:42:10,030 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe002_rmo.oepc.i [2024-11-09 06:42:11,542 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 06:42:11,747 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 06:42:11,748 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe002_rmo.oepc.i [2024-11-09 06:42:11,763 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/519eb88a9/175b59ecebaa4668ae641f92706e3f43/FLAG0dcad433e [2024-11-09 06:42:11,775 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/519eb88a9/175b59ecebaa4668ae641f92706e3f43 [2024-11-09 06:42:11,778 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 06:42:11,779 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 06:42:11,780 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 06:42:11,780 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 06:42:11,785 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 06:42:11,786 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:42:11" (1/1) ... [2024-11-09 06:42:11,787 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9d0ec26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:42:11, skipping insertion in model container [2024-11-09 06:42:11,787 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:42:11" (1/1) ... [2024-11-09 06:42:11,822 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 06:42:12,261 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:42:12,273 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 06:42:12,340 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:42:12,375 INFO L204 MainTranslator]: Completed translation [2024-11-09 06:42:12,376 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:42:12 WrapperNode [2024-11-09 06:42:12,376 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 06:42:12,377 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 06:42:12,377 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 06:42:12,377 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 06:42:12,384 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:42:12" (1/1) ... [2024-11-09 06:42:12,421 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:42:12" (1/1) ... [2024-11-09 06:42:12,483 INFO L138 Inliner]: procedures = 175, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 787 [2024-11-09 06:42:12,487 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 06:42:12,488 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 06:42:12,492 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 06:42:12,492 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 06:42:12,509 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:42:12" (1/1) ... [2024-11-09 06:42:12,510 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:42:12" (1/1) ... [2024-11-09 06:42:12,523 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:42:12" (1/1) ... [2024-11-09 06:42:12,524 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:42:12" (1/1) ... [2024-11-09 06:42:12,564 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:42:12" (1/1) ... [2024-11-09 06:42:12,573 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:42:12" (1/1) ... [2024-11-09 06:42:12,577 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:42:12" (1/1) ... [2024-11-09 06:42:12,582 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:42:12" (1/1) ... [2024-11-09 06:42:12,589 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 06:42:12,590 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 06:42:12,590 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 06:42:12,590 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 06:42:12,591 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:42:12" (1/1) ... [2024-11-09 06:42:12,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 06:42:12,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:42:12,620 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) [2024-11-09 06:42:12,629 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 [2024-11-09 06:42:12,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 06:42:12,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 06:42:12,672 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-09 06:42:12,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 06:42:12,673 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-11-09 06:42:12,673 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-11-09 06:42:12,673 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-11-09 06:42:12,674 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-11-09 06:42:12,674 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-11-09 06:42:12,674 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-11-09 06:42:12,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 06:42:12,674 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-09 06:42:12,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 06:42:12,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 06:42:12,678 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 06:42:12,911 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 06:42:12,913 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 06:42:14,753 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 06:42:14,754 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 06:42:29,100 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 06:42:29,101 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 06:42:29,101 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:42:29 BoogieIcfgContainer [2024-11-09 06:42:29,102 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 06:42:29,103 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 06:42:29,103 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 06:42:29,106 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 06:42:29,107 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:42:11" (1/3) ... [2024-11-09 06:42:29,107 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61745c31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:42:29, skipping insertion in model container [2024-11-09 06:42:29,107 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:42:12" (2/3) ... [2024-11-09 06:42:29,107 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61745c31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:42:29, skipping insertion in model container [2024-11-09 06:42:29,108 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:42:29" (3/3) ... [2024-11-09 06:42:29,109 INFO L112 eAbstractionObserver]: Analyzing ICFG safe002_rmo.oepc.i [2024-11-09 06:42:29,124 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 06:42:29,124 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 400 error locations. [2024-11-09 06:42:29,125 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 06:42:30,308 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 06:42:30,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 537 places, 530 transitions, 1072 flow [2024-11-09 06:42:30,959 INFO L124 PetriNetUnfolderBase]: 3/527 cut-off events. [2024-11-09 06:42:30,962 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 06:42:30,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 537 conditions, 527 events. 3/527 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 3651 event pairs, 0 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 473. Up to 2 conditions per place. [2024-11-09 06:42:30,988 INFO L82 GeneralOperation]: Start removeDead. Operand has 537 places, 530 transitions, 1072 flow [2024-11-09 06:42:31,024 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 534 places, 527 transitions, 1063 flow [2024-11-09 06:42:31,037 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:42:31,044 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;@61df046d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:42:31,046 INFO L334 AbstractCegarLoop]: Starting to check reachability of 664 error locations. [2024-11-09 06:42:31,056 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 06:42:31,056 INFO L124 PetriNetUnfolderBase]: 0/61 cut-off events. [2024-11-09 06:42:31,056 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 06:42:31,056 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:42:31,057 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] [2024-11-09 06:42:31,058 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONDATA_RACE === [P0Err0ASSERT_VIOLATIONDATA_RACE, P0Err1ASSERT_VIOLATIONDATA_RACE, P0Err2ASSERT_VIOLATIONDATA_RACE, P0Err3ASSERT_VIOLATIONDATA_RACE (and 660 more)] === [2024-11-09 06:42:31,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:42:31,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1692668088, now seen corresponding path program 1 times [2024-11-09 06:42:31,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:42:31,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147988356] [2024-11-09 06:42:31,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:42:31,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:42:31,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:42:31,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:42:31,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:42:31,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147988356] [2024-11-09 06:42:31,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147988356] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:42:31,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:42:31,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 06:42:31,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370463085] [2024-11-09 06:42:31,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:42:31,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 06:42:31,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:42:31,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 06:42:31,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 06:42:31,444 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 530 [2024-11-09 06:42:31,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 534 places, 527 transitions, 1063 flow. Second operand has 2 states, 2 states have (on average 112.0) internal successors, (224), 2 states have internal predecessors, (224), 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) [2024-11-09 06:42:31,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 06:42:31,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 530 [2024-11-09 06:42:31,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 06:42:36,048 INFO L124 PetriNetUnfolderBase]: 875/3164 cut-off events. [2024-11-09 06:42:36,048 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-11-09 06:42:36,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4518 conditions, 3164 events. 875/3164 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 29561 event pairs, 875 based on Foata normal form. 272/3163 useless extension candidates. Maximal degree in co-relation 4452. Up to 1300 conditions per place. [2024-11-09 06:42:36,087 INFO L140 encePairwiseOnDemand]: 129/530 looper letters, 17 selfloop transitions, 0 changer transitions 0/124 dead transitions. [2024-11-09 06:42:36,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 124 transitions, 291 flow [2024-11-09 06:42:36,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 06:42:36,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-09 06:42:36,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 640 transitions. [2024-11-09 06:42:36,128 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6037735849056604 [2024-11-09 06:42:36,135 INFO L175 Difference]: Start difference. First operand has 534 places, 527 transitions, 1063 flow. Second operand 2 states and 640 transitions. [2024-11-09 06:42:36,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 124 transitions, 291 flow [2024-11-09 06:42:36,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 124 transitions, 288 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 06:42:36,148 INFO L231 Difference]: Finished difference. Result has 132 places, 124 transitions, 254 flow [2024-11-09 06:42:36,153 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=530, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=254, PETRI_PLACES=132, PETRI_TRANSITIONS=124} [2024-11-09 06:42:36,160 INFO L277 CegarLoopForPetriNet]: 534 programPoint places, -402 predicate places. [2024-11-09 06:42:36,161 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 124 transitions, 254 flow [2024-11-09 06:42:36,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 112.0) internal successors, (224), 2 states have internal predecessors, (224), 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) [2024-11-09 06:42:36,165 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:42:36,165 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] [2024-11-09 06:42:36,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 06:42:36,166 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [P0Err0ASSERT_VIOLATIONDATA_RACE, P0Err1ASSERT_VIOLATIONDATA_RACE, P0Err2ASSERT_VIOLATIONDATA_RACE, P0Err3ASSERT_VIOLATIONDATA_RACE (and 660 more)] === [2024-11-09 06:42:36,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:42:36,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1799487560, now seen corresponding path program 1 times [2024-11-09 06:42:36,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:42:36,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928033974] [2024-11-09 06:42:36,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:42:36,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:42:36,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:42:36,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:42:36,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:42:36,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928033974] [2024-11-09 06:42:36,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928033974] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:42:36,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:42:36,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 06:42:36,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312597073] [2024-11-09 06:42:36,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:42:36,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:42:36,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:42:36,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:42:36,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:42:36,721 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 530 [2024-11-09 06:42:36,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 124 transitions, 254 flow. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 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) [2024-11-09 06:42:36,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 06:42:36,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 530 [2024-11-09 06:42:36,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 06:42:43,077 INFO L124 PetriNetUnfolderBase]: 1345/4473 cut-off events. [2024-11-09 06:42:43,078 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 06:42:43,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6495 conditions, 4473 events. 1345/4473 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 41355 event pairs, 405 based on Foata normal form. 0/4155 useless extension candidates. Maximal degree in co-relation 6492. Up to 1340 conditions per place. [2024-11-09 06:42:43,109 INFO L140 encePairwiseOnDemand]: 528/530 looper letters, 29 selfloop transitions, 1 changer transitions 0/134 dead transitions. [2024-11-09 06:42:43,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 134 transitions, 334 flow [2024-11-09 06:42:43,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:42:43,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 06:42:43,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 355 transitions. [2024-11-09 06:42:43,117 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.22327044025157233 [2024-11-09 06:42:43,118 INFO L175 Difference]: Start difference. First operand has 132 places, 124 transitions, 254 flow. Second operand 3 states and 355 transitions. [2024-11-09 06:42:43,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 134 transitions, 334 flow [2024-11-09 06:42:43,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 134 transitions, 334 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 06:42:43,121 INFO L231 Difference]: Finished difference. Result has 133 places, 123 transitions, 254 flow [2024-11-09 06:42:43,122 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=530, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=254, PETRI_PLACES=133, PETRI_TRANSITIONS=123} [2024-11-09 06:42:43,123 INFO L277 CegarLoopForPetriNet]: 534 programPoint places, -401 predicate places. [2024-11-09 06:42:43,123 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 123 transitions, 254 flow [2024-11-09 06:42:43,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 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) [2024-11-09 06:42:43,124 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:42:43,124 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] [2024-11-09 06:42:43,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 06:42:43,125 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr138ASSERT_VIOLATIONDATA_RACE === [P0Err0ASSERT_VIOLATIONDATA_RACE, P0Err1ASSERT_VIOLATIONDATA_RACE, P0Err2ASSERT_VIOLATIONDATA_RACE, P0Err3ASSERT_VIOLATIONDATA_RACE (and 660 more)] === [2024-11-09 06:42:43,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:42:43,126 INFO L85 PathProgramCache]: Analyzing trace with hash -85830071, now seen corresponding path program 1 times [2024-11-09 06:42:43,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:42:43,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502874901] [2024-11-09 06:42:43,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:42:43,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:42:43,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:42:43,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:42:43,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:42:43,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502874901] [2024-11-09 06:42:43,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502874901] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:42:43,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:42:43,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 06:42:43,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136299328] [2024-11-09 06:42:43,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:42:43,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:42:43,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:42:43,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:42:43,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:42:43,564 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 530 [2024-11-09 06:42:43,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 123 transitions, 254 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 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) [2024-11-09 06:42:43,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 06:42:43,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 530 [2024-11-09 06:42:43,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand