./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/pthread-wmm/mix036_power.opt_rmo.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 4a390ef5 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/pthread-wmm/mix036_power.opt_rmo.opt.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 f5d83fc7ee9b26859e9993ee2fcff801f4a9d92dea17a48a6a39594bb6b759ca --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 15:12:19,353 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 15:12:19,436 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-24 15:12:19,441 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 15:12:19,442 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 15:12:19,463 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 15:12:19,465 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 15:12:19,466 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 15:12:19,466 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 15:12:19,467 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 15:12:19,468 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 15:12:19,468 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 15:12:19,468 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 15:12:19,471 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 15:12:19,471 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 15:12:19,471 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 15:12:19,471 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 15:12:19,472 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 15:12:19,472 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 15:12:19,472 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 15:12:19,472 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 15:12:19,476 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 15:12:19,476 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-24 15:12:19,477 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 15:12:19,477 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 15:12:19,477 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 15:12:19,477 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 15:12:19,478 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 15:12:19,478 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 15:12:19,478 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 15:12:19,478 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 15:12:19,479 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 15:12:19,479 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 15:12:19,479 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 15:12:19,479 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 15:12:19,480 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 15:12:19,480 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 15:12:19,483 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 15:12:19,483 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 15:12:19,484 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 15:12:19,484 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 15:12:19,484 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f5d83fc7ee9b26859e9993ee2fcff801f4a9d92dea17a48a6a39594bb6b759ca [2024-10-24 15:12:19,704 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 15:12:19,730 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 15:12:19,733 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 15:12:19,734 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 15:12:19,735 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 15:12:19,736 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix036_power.opt_rmo.opt.i [2024-10-24 15:12:21,223 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 15:12:21,462 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 15:12:21,463 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix036_power.opt_rmo.opt.i [2024-10-24 15:12:21,477 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f9a6de5f/ef5b9784d8fb45fc9b2117ec685ad177/FLAGc3d214150 [2024-10-24 15:12:21,490 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f9a6de5f/ef5b9784d8fb45fc9b2117ec685ad177 [2024-10-24 15:12:21,493 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 15:12:21,495 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 15:12:21,498 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 15:12:21,498 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 15:12:21,503 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 15:12:21,503 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:12:21" (1/1) ... [2024-10-24 15:12:21,506 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34852d4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:12:21, skipping insertion in model container [2024-10-24 15:12:21,506 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:12:21" (1/1) ... [2024-10-24 15:12:21,573 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 15:12:22,000 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 15:12:22,012 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 15:12:22,089 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 15:12:22,142 INFO L204 MainTranslator]: Completed translation [2024-10-24 15:12:22,143 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:12:22 WrapperNode [2024-10-24 15:12:22,143 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 15:12:22,144 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 15:12:22,144 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 15:12:22,144 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 15:12:22,152 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:12:22" (1/1) ... [2024-10-24 15:12:22,174 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:12:22" (1/1) ... [2024-10-24 15:12:22,223 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 508 [2024-10-24 15:12:22,223 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 15:12:22,224 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 15:12:22,224 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 15:12:22,228 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 15:12:22,241 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:12:22" (1/1) ... [2024-10-24 15:12:22,242 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:12:22" (1/1) ... [2024-10-24 15:12:22,252 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:12:22" (1/1) ... [2024-10-24 15:12:22,252 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:12:22" (1/1) ... [2024-10-24 15:12:22,283 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:12:22" (1/1) ... [2024-10-24 15:12:22,289 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:12:22" (1/1) ... [2024-10-24 15:12:22,292 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:12:22" (1/1) ... [2024-10-24 15:12:22,296 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:12:22" (1/1) ... [2024-10-24 15:12:22,301 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 15:12:22,302 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 15:12:22,302 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 15:12:22,302 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 15:12:22,307 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:12:22" (1/1) ... [2024-10-24 15:12:22,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 15:12:22,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 15:12:22,352 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 15:12:22,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 15:12:22,401 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-24 15:12:22,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 15:12:22,402 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-10-24 15:12:22,402 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-10-24 15:12:22,403 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-10-24 15:12:22,403 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-10-24 15:12:22,403 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-10-24 15:12:22,403 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-10-24 15:12:22,403 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-10-24 15:12:22,403 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-10-24 15:12:22,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-24 15:12:22,404 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-24 15:12:22,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 15:12:22,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 15:12:22,407 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 15:12:22,655 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 15:12:22,657 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 15:12:23,968 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 15:12:23,968 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 15:12:27,995 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 15:12:27,996 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-24 15:12:27,996 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:12:27 BoogieIcfgContainer [2024-10-24 15:12:27,996 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 15:12:28,000 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 15:12:28,000 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 15:12:28,004 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 15:12:28,004 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 03:12:21" (1/3) ... [2024-10-24 15:12:28,005 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@546108a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:12:28, skipping insertion in model container [2024-10-24 15:12:28,005 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:12:22" (2/3) ... [2024-10-24 15:12:28,006 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@546108a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:12:28, skipping insertion in model container [2024-10-24 15:12:28,006 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:12:27" (3/3) ... [2024-10-24 15:12:28,007 INFO L112 eAbstractionObserver]: Analyzing ICFG mix036_power.opt_rmo.opt.i [2024-10-24 15:12:28,025 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 15:12:28,026 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 229 error locations. [2024-10-24 15:12:28,027 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 15:12:28,288 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 15:12:28,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 374 places, 364 transitions, 744 flow [2024-10-24 15:12:28,581 INFO L124 PetriNetUnfolderBase]: 3/360 cut-off events. [2024-10-24 15:12:28,581 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 15:12:28,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 373 conditions, 360 events. 3/360 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 1810 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 320. Up to 2 conditions per place. [2024-10-24 15:12:28,596 INFO L82 GeneralOperation]: Start removeDead. Operand has 374 places, 364 transitions, 744 flow [2024-10-24 15:12:28,613 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 370 places, 360 transitions, 732 flow [2024-10-24 15:12:28,621 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 15:12:28,627 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;@77a2d196, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 15:12:28,627 INFO L334 AbstractCegarLoop]: Starting to check reachability of 424 error locations. [2024-10-24 15:12:28,634 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 15:12:28,634 INFO L124 PetriNetUnfolderBase]: 0/49 cut-off events. [2024-10-24 15:12:28,634 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 15:12:28,634 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:12:28,635 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:12:28,635 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONDATA_RACE === [P0Err0ASSERT_VIOLATIONDATA_RACE, P0Err1ASSERT_VIOLATIONDATA_RACE, P0Err2ASSERT_VIOLATIONDATA_RACE, P0Err3ASSERT_VIOLATIONDATA_RACE (and 420 more)] === [2024-10-24 15:12:28,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:12:28,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1747688848, now seen corresponding path program 1 times [2024-10-24 15:12:28,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:12:28,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203313781] [2024-10-24 15:12:28,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:12:28,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:12:28,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:12:28,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:12:28,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:12:28,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203313781] [2024-10-24 15:12:28,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203313781] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:12:28,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:12:28,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 15:12:28,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146365857] [2024-10-24 15:12:28,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:12:28,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 15:12:28,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:12:28,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 15:12:28,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 15:12:28,935 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 364 [2024-10-24 15:12:28,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 360 transitions, 732 flow. Second operand has 2 states, 2 states have (on average 111.0) internal successors, (222), 2 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:12:28,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:12:28,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 364 [2024-10-24 15:12:28,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:12:38,421 INFO L124 PetriNetUnfolderBase]: 6724/18854 cut-off events. [2024-10-24 15:12:38,422 INFO L125 PetriNetUnfolderBase]: For 101/101 co-relation queries the response was YES. [2024-10-24 15:12:38,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28126 conditions, 18854 events. 6724/18854 cut-off events. For 101/101 co-relation queries the response was YES. Maximal size of possible extension queue 783. Compared 224391 event pairs, 6724 based on Foata normal form. 1631/19206 useless extension candidates. Maximal degree in co-relation 28071. Up to 9065 conditions per place. [2024-10-24 15:12:38,662 INFO L140 encePairwiseOnDemand]: 134/364 looper letters, 23 selfloop transitions, 0 changer transitions 0/128 dead transitions. [2024-10-24 15:12:38,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 128 transitions, 314 flow [2024-10-24 15:12:38,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-24 15:12:38,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-24 15:12:38,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 473 transitions. [2024-10-24 15:12:38,684 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6497252747252747 [2024-10-24 15:12:38,688 INFO L175 Difference]: Start difference. First operand has 370 places, 360 transitions, 732 flow. Second operand 2 states and 473 transitions. [2024-10-24 15:12:38,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 128 transitions, 314 flow [2024-10-24 15:12:38,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 128 transitions, 310 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-24 15:12:38,699 INFO L231 Difference]: Finished difference. Result has 138 places, 128 transitions, 264 flow [2024-10-24 15:12:38,702 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=264, PETRI_PLACES=138, PETRI_TRANSITIONS=128} [2024-10-24 15:12:38,708 INFO L277 CegarLoopForPetriNet]: 370 programPoint places, -232 predicate places. [2024-10-24 15:12:38,708 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 128 transitions, 264 flow [2024-10-24 15:12:38,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 111.0) internal successors, (222), 2 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:12:38,710 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:12:38,710 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] [2024-10-24 15:12:38,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 15:12:38,711 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [P0Err0ASSERT_VIOLATIONDATA_RACE, P0Err1ASSERT_VIOLATIONDATA_RACE, P0Err2ASSERT_VIOLATIONDATA_RACE, P0Err3ASSERT_VIOLATIONDATA_RACE (and 420 more)] === [2024-10-24 15:12:38,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:12:38,713 INFO L85 PathProgramCache]: Analyzing trace with hash -2135820359, now seen corresponding path program 1 times [2024-10-24 15:12:38,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:12:38,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482971766] [2024-10-24 15:12:38,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:12:38,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:12:38,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:12:38,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:12:38,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:12:38,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482971766] [2024-10-24 15:12:38,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482971766] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:12:38,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:12:38,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 15:12:38,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550329380] [2024-10-24 15:12:38,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:12:38,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 15:12:38,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:12:38,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 15:12:38,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 15:12:38,931 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 364 [2024-10-24 15:12:38,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 128 transitions, 264 flow. Second operand has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:12:38,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:12:38,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 364 [2024-10-24 15:12:38,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:12:50,057 INFO L124 PetriNetUnfolderBase]: 10260/27213 cut-off events. [2024-10-24 15:12:50,058 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 15:12:50,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41138 conditions, 27213 events. 10260/27213 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 786. Compared 316893 event pairs, 3188 based on Foata normal form. 0/25491 useless extension candidates. Maximal degree in co-relation 41135. Up to 9312 conditions per place. [2024-10-24 15:12:50,257 INFO L140 encePairwiseOnDemand]: 362/364 looper letters, 40 selfloop transitions, 1 changer transitions 0/143 dead transitions. [2024-10-24 15:12:50,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 143 transitions, 376 flow [2024-10-24 15:12:50,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 15:12:50,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 15:12:50,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 363 transitions. [2024-10-24 15:12:50,260 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3324175824175824 [2024-10-24 15:12:50,260 INFO L175 Difference]: Start difference. First operand has 138 places, 128 transitions, 264 flow. Second operand 3 states and 363 transitions. [2024-10-24 15:12:50,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 143 transitions, 376 flow [2024-10-24 15:12:50,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 143 transitions, 376 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 15:12:50,264 INFO L231 Difference]: Finished difference. Result has 139 places, 127 transitions, 264 flow [2024-10-24 15:12:50,265 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=264, PETRI_PLACES=139, PETRI_TRANSITIONS=127} [2024-10-24 15:12:50,266 INFO L277 CegarLoopForPetriNet]: 370 programPoint places, -231 predicate places. [2024-10-24 15:12:50,266 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 127 transitions, 264 flow [2024-10-24 15:12:50,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:12:50,267 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:12:50,267 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] [2024-10-24 15:12:50,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 15:12:50,268 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONDATA_RACE === [P0Err0ASSERT_VIOLATIONDATA_RACE, P0Err1ASSERT_VIOLATIONDATA_RACE, P0Err2ASSERT_VIOLATIONDATA_RACE, P0Err3ASSERT_VIOLATIONDATA_RACE (and 420 more)] === [2024-10-24 15:12:50,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:12:50,269 INFO L85 PathProgramCache]: Analyzing trace with hash -310911431, now seen corresponding path program 1 times [2024-10-24 15:12:50,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:12:50,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340370437] [2024-10-24 15:12:50,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:12:50,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:12:50,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:12:50,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:12:50,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:12:50,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340370437] [2024-10-24 15:12:50,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340370437] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:12:50,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:12:50,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 15:12:50,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19090816] [2024-10-24 15:12:50,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:12:50,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 15:12:50,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:12:50,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 15:12:50,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 15:12:50,461 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 364 [2024-10-24 15:12:50,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 127 transitions, 264 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) [2024-10-24 15:12:50,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:12:50,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 364 [2024-10-24 15:12:50,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand