./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/mix047_power.oepc_pso.oepc_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version a046e57d 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/mix047_power.oepc_pso.oepc_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 dcc3fad0768415d67ba0b5226238487b935d262c55e83ab1790d239680fbb73d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 09:39:26,513 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 09:39:26,556 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-13 09:39:26,560 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 09:39:26,561 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 09:39:26,597 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 09:39:26,598 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 09:39:26,599 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 09:39:26,600 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 09:39:26,601 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 09:39:26,601 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 09:39:26,612 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 09:39:26,613 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 09:39:26,614 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 09:39:26,615 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 09:39:26,615 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 09:39:26,616 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 09:39:26,616 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 09:39:26,616 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 09:39:26,616 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 09:39:26,619 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 09:39:26,620 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 09:39:26,620 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-13 09:39:26,620 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 09:39:26,621 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 09:39:26,621 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 09:39:26,621 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 09:39:26,621 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 09:39:26,622 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 09:39:26,622 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 09:39:26,622 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 09:39:26,622 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 09:39:26,622 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 09:39:26,622 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 09:39:26,623 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 09:39:26,623 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 09:39:26,623 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 09:39:26,623 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 09:39:26,623 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 09:39:26,624 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 09:39:26,624 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 09:39:26,624 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dcc3fad0768415d67ba0b5226238487b935d262c55e83ab1790d239680fbb73d [2024-10-13 09:39:26,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 09:39:26,894 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 09:39:26,896 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 09:39:26,898 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 09:39:26,901 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 09:39:26,902 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.i [2024-10-13 09:39:28,393 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 09:39:28,664 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 09:39:28,665 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.i [2024-10-13 09:39:28,681 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bed85aed/f4fbec6a1ee04d51aa28332ebb05a58f/FLAGbb17d162a [2024-10-13 09:39:28,693 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bed85aed/f4fbec6a1ee04d51aa28332ebb05a58f [2024-10-13 09:39:28,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 09:39:28,696 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 09:39:28,698 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 09:39:28,698 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 09:39:28,707 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 09:39:28,707 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:39:28" (1/1) ... [2024-10-13 09:39:28,710 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a1adca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:39:28, skipping insertion in model container [2024-10-13 09:39:28,710 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:39:28" (1/1) ... [2024-10-13 09:39:28,757 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 09:39:29,204 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 09:39:29,214 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 09:39:29,318 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 09:39:29,352 INFO L204 MainTranslator]: Completed translation [2024-10-13 09:39:29,353 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:39:29 WrapperNode [2024-10-13 09:39:29,353 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 09:39:29,354 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 09:39:29,354 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 09:39:29,354 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 09:39:29,360 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:39:29" (1/1) ... [2024-10-13 09:39:29,379 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:39:29" (1/1) ... [2024-10-13 09:39:29,411 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 503 [2024-10-13 09:39:29,412 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 09:39:29,412 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 09:39:29,413 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 09:39:29,413 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 09:39:29,424 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:39:29" (1/1) ... [2024-10-13 09:39:29,424 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:39:29" (1/1) ... [2024-10-13 09:39:29,434 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:39:29" (1/1) ... [2024-10-13 09:39:29,434 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:39:29" (1/1) ... [2024-10-13 09:39:29,461 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:39:29" (1/1) ... [2024-10-13 09:39:29,473 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:39:29" (1/1) ... [2024-10-13 09:39:29,484 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:39:29" (1/1) ... [2024-10-13 09:39:29,491 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:39:29" (1/1) ... [2024-10-13 09:39:29,504 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 09:39:29,505 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 09:39:29,507 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 09:39:29,507 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 09:39:29,508 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:39:29" (1/1) ... [2024-10-13 09:39:29,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 09:39:29,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:39:29,537 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) [2024-10-13 09:39:29,541 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 [2024-10-13 09:39:29,576 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-13 09:39:29,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 09:39:29,577 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-10-13 09:39:29,577 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-10-13 09:39:29,577 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-10-13 09:39:29,577 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-10-13 09:39:29,577 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-10-13 09:39:29,577 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-10-13 09:39:29,578 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-10-13 09:39:29,578 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-10-13 09:39:29,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-13 09:39:29,578 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-13 09:39:29,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 09:39:29,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 09:39:29,580 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 09:39:29,737 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 09:39:29,741 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 09:39:30,985 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 09:39:30,985 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 09:39:35,655 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 09:39:35,657 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-13 09:39:35,658 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:39:35 BoogieIcfgContainer [2024-10-13 09:39:35,658 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 09:39:35,660 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 09:39:35,660 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 09:39:35,665 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 09:39:35,665 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:39:28" (1/3) ... [2024-10-13 09:39:35,665 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69160f53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:39:35, skipping insertion in model container [2024-10-13 09:39:35,666 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:39:29" (2/3) ... [2024-10-13 09:39:35,666 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69160f53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:39:35, skipping insertion in model container [2024-10-13 09:39:35,666 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:39:35" (3/3) ... [2024-10-13 09:39:35,668 INFO L112 eAbstractionObserver]: Analyzing ICFG mix047_power.oepc_pso.oepc_rmo.oepc.i [2024-10-13 09:39:35,687 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 09:39:35,687 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 282 error locations. [2024-10-13 09:39:35,688 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 09:39:36,059 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 09:39:36,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 424 places, 414 transitions, 844 flow [2024-10-13 09:39:36,289 INFO L124 PetriNetUnfolderBase]: 3/410 cut-off events. [2024-10-13 09:39:36,289 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 09:39:36,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 423 conditions, 410 events. 3/410 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 2202 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 373. Up to 2 conditions per place. [2024-10-13 09:39:36,306 INFO L82 GeneralOperation]: Start removeDead. Operand has 424 places, 414 transitions, 844 flow [2024-10-13 09:39:36,330 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 420 places, 410 transitions, 832 flow [2024-10-13 09:39:36,338 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 09:39:36,343 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;@5f2f2eea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 09:39:36,344 INFO L334 AbstractCegarLoop]: Starting to check reachability of 530 error locations. [2024-10-13 09:39:36,351 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 09:39:36,351 INFO L124 PetriNetUnfolderBase]: 0/45 cut-off events. [2024-10-13 09:39:36,351 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 09:39:36,352 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:39:36,352 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] [2024-10-13 09:39:36,353 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONDATA_RACE === [P0Err0ASSERT_VIOLATIONDATA_RACE, P0Err1ASSERT_VIOLATIONDATA_RACE, P0Err2ASSERT_VIOLATIONDATA_RACE, P0Err3ASSERT_VIOLATIONDATA_RACE (and 526 more)] === [2024-10-13 09:39:36,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:39:36,358 INFO L85 PathProgramCache]: Analyzing trace with hash -14441754, now seen corresponding path program 1 times [2024-10-13 09:39:36,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:39:36,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327716433] [2024-10-13 09:39:36,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:39:36,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:39:36,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:39:36,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:39:36,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:39:36,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327716433] [2024-10-13 09:39:36,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327716433] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:39:36,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:39:36,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 09:39:36,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314120489] [2024-10-13 09:39:36,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:39:36,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 09:39:36,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:39:36,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 09:39:36,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 09:39:36,616 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 414 [2024-10-13 09:39:36,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 410 transitions, 832 flow. Second operand has 2 states, 2 states have (on average 106.0) internal successors, (212), 2 states have internal predecessors, (212), 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) [2024-10-13 09:39:36,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:39:36,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 414 [2024-10-13 09:39:36,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:39:48,108 INFO L124 PetriNetUnfolderBase]: 10870/29689 cut-off events. [2024-10-13 09:39:48,108 INFO L125 PetriNetUnfolderBase]: For 156/156 co-relation queries the response was YES. [2024-10-13 09:39:48,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44532 conditions, 29689 events. 10870/29689 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 1206. Compared 369748 event pairs, 10870 based on Foata normal form. 2568/30312 useless extension candidates. Maximal degree in co-relation 44480. Up to 14526 conditions per place. [2024-10-13 09:39:48,355 INFO L140 encePairwiseOnDemand]: 131/414 looper letters, 25 selfloop transitions, 0 changer transitions 0/125 dead transitions. [2024-10-13 09:39:48,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 125 transitions, 312 flow [2024-10-13 09:39:48,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 09:39:48,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-13 09:39:48,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 518 transitions. [2024-10-13 09:39:48,373 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6256038647342995 [2024-10-13 09:39:48,376 INFO L175 Difference]: Start difference. First operand has 420 places, 410 transitions, 832 flow. Second operand 2 states and 518 transitions. [2024-10-13 09:39:48,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 125 transitions, 312 flow [2024-10-13 09:39:48,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 125 transitions, 308 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-13 09:39:48,383 INFO L231 Difference]: Finished difference. Result has 135 places, 125 transitions, 258 flow [2024-10-13 09:39:48,385 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=258, PETRI_PLACES=135, PETRI_TRANSITIONS=125} [2024-10-13 09:39:48,388 INFO L277 CegarLoopForPetriNet]: 420 programPoint places, -285 predicate places. [2024-10-13 09:39:48,389 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 125 transitions, 258 flow [2024-10-13 09:39:48,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 106.0) internal successors, (212), 2 states have internal predecessors, (212), 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) [2024-10-13 09:39:48,390 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:39:48,390 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] [2024-10-13 09:39:48,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 09:39:48,391 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [P0Err0ASSERT_VIOLATIONDATA_RACE, P0Err1ASSERT_VIOLATIONDATA_RACE, P0Err2ASSERT_VIOLATIONDATA_RACE, P0Err3ASSERT_VIOLATIONDATA_RACE (and 526 more)] === [2024-10-13 09:39:48,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:39:48,392 INFO L85 PathProgramCache]: Analyzing trace with hash -482735817, now seen corresponding path program 1 times [2024-10-13 09:39:48,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:39:48,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986734787] [2024-10-13 09:39:48,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:39:48,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:39:48,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:39:48,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:39:48,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:39:48,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986734787] [2024-10-13 09:39:48,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986734787] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:39:48,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:39:48,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 09:39:48,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153280028] [2024-10-13 09:39:48,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:39:48,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:39:48,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:39:48,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:39:48,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:39:48,561 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 414 [2024-10-13 09:39:48,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 125 transitions, 258 flow. Second operand has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 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) [2024-10-13 09:39:48,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:39:48,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 414 [2024-10-13 09:39:48,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:40:01,220 INFO L124 PetriNetUnfolderBase]: 16570/42942 cut-off events. [2024-10-13 09:40:01,220 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 09:40:01,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65232 conditions, 42942 events. 16570/42942 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1178. Compared 521499 event pairs, 5170 based on Foata normal form. 0/40264 useless extension candidates. Maximal degree in co-relation 65229. Up to 14900 conditions per place. [2024-10-13 09:40:01,533 INFO L140 encePairwiseOnDemand]: 412/414 looper letters, 44 selfloop transitions, 1 changer transitions 0/142 dead transitions. [2024-10-13 09:40:01,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 142 transitions, 382 flow [2024-10-13 09:40:01,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:40:01,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:40:01,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 352 transitions. [2024-10-13 09:40:01,539 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2834138486312399 [2024-10-13 09:40:01,539 INFO L175 Difference]: Start difference. First operand has 135 places, 125 transitions, 258 flow. Second operand 3 states and 352 transitions. [2024-10-13 09:40:01,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 142 transitions, 382 flow [2024-10-13 09:40:01,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 142 transitions, 382 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 09:40:01,543 INFO L231 Difference]: Finished difference. Result has 136 places, 124 transitions, 258 flow [2024-10-13 09:40:01,544 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=258, PETRI_PLACES=136, PETRI_TRANSITIONS=124} [2024-10-13 09:40:01,545 INFO L277 CegarLoopForPetriNet]: 420 programPoint places, -284 predicate places. [2024-10-13 09:40:01,545 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 124 transitions, 258 flow [2024-10-13 09:40:01,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 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) [2024-10-13 09:40:01,546 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:40:01,546 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] [2024-10-13 09:40:01,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 09:40:01,546 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONDATA_RACE === [P0Err0ASSERT_VIOLATIONDATA_RACE, P0Err1ASSERT_VIOLATIONDATA_RACE, P0Err2ASSERT_VIOLATIONDATA_RACE, P0Err3ASSERT_VIOLATIONDATA_RACE (and 526 more)] === [2024-10-13 09:40:01,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:40:01,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1842606147, now seen corresponding path program 1 times [2024-10-13 09:40:01,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:40:01,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528001835] [2024-10-13 09:40:01,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:40:01,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:40:01,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:40:01,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:40:01,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:40:01,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528001835] [2024-10-13 09:40:01,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528001835] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:40:01,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:40:01,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 09:40:01,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358172754] [2024-10-13 09:40:01,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:40:01,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:40:01,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:40:01,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:40:01,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:40:01,707 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 414 [2024-10-13 09:40:01,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 124 transitions, 258 flow. Second operand has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 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) [2024-10-13 09:40:01,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:40:01,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 414 [2024-10-13 09:40:01,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand