./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/pthread-wmm/mix005_power.oepc_pso.oepc_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 8be7027f 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/mix005_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 2272010dc8e07b1cac46beb8b69d58bd905467d4d1bd6fb11b2eb1922da454c5 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 12:13:56,792 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 12:13:56,841 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-11-12 12:13:56,845 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 12:13:56,846 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 12:13:56,866 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 12:13:56,869 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 12:13:56,869 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 12:13:56,870 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 12:13:56,871 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 12:13:56,871 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 12:13:56,871 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 12:13:56,871 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 12:13:56,872 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 12:13:56,872 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 12:13:56,872 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 12:13:56,872 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 12:13:56,872 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 12:13:56,873 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 12:13:56,873 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 12:13:56,873 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 12:13:56,877 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 12:13:56,877 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-12 12:13:56,877 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 12:13:56,877 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 12:13:56,877 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 12:13:56,877 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 12:13:56,877 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 12:13:56,878 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 12:13:56,878 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 12:13:56,878 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 12:13:56,878 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 12:13:56,878 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 12:13:56,878 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 12:13:56,878 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 12:13:56,879 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 12:13:56,879 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 12:13:56,879 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 12:13:56,879 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 12:13:56,879 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 12:13:56,879 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 12:13:56,881 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2272010dc8e07b1cac46beb8b69d58bd905467d4d1bd6fb11b2eb1922da454c5 [2024-11-12 12:13:57,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 12:13:57,089 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 12:13:57,091 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 12:13:57,092 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 12:13:57,093 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 12:13:57,094 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix005_power.oepc_pso.oepc_rmo.oepc.i [2024-11-12 12:13:58,383 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 12:13:58,588 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 12:13:58,589 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix005_power.oepc_pso.oepc_rmo.oepc.i [2024-11-12 12:13:58,602 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c3dc6d9a/b9edbac599b348448644de015111034e/FLAG2e0a73a49 [2024-11-12 12:13:58,616 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c3dc6d9a/b9edbac599b348448644de015111034e [2024-11-12 12:13:58,618 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 12:13:58,619 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 12:13:58,620 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 12:13:58,620 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 12:13:58,625 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 12:13:58,625 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:13:58" (1/1) ... [2024-11-12 12:13:58,626 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50203063 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:58, skipping insertion in model container [2024-11-12 12:13:58,626 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:13:58" (1/1) ... [2024-11-12 12:13:58,670 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 12:13:59,048 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 12:13:59,059 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 12:13:59,121 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 12:13:59,146 INFO L204 MainTranslator]: Completed translation [2024-11-12 12:13:59,147 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:59 WrapperNode [2024-11-12 12:13:59,147 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 12:13:59,148 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 12:13:59,148 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 12:13:59,148 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 12:13:59,153 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:59" (1/1) ... [2024-11-12 12:13:59,180 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:59" (1/1) ... [2024-11-12 12:13:59,214 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 511 [2024-11-12 12:13:59,214 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 12:13:59,215 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 12:13:59,215 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 12:13:59,215 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 12:13:59,221 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:59" (1/1) ... [2024-11-12 12:13:59,222 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:59" (1/1) ... [2024-11-12 12:13:59,226 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:59" (1/1) ... [2024-11-12 12:13:59,226 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:59" (1/1) ... [2024-11-12 12:13:59,239 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:59" (1/1) ... [2024-11-12 12:13:59,244 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:59" (1/1) ... [2024-11-12 12:13:59,246 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:59" (1/1) ... [2024-11-12 12:13:59,249 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:59" (1/1) ... [2024-11-12 12:13:59,254 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 12:13:59,254 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 12:13:59,255 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 12:13:59,255 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 12:13:59,255 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:59" (1/1) ... [2024-11-12 12:13:59,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 12:13:59,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 12:13:59,297 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) [2024-11-12 12:13:59,300 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 [2024-11-12 12:13:59,333 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-12 12:13:59,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 12:13:59,333 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-11-12 12:13:59,333 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-11-12 12:13:59,334 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-11-12 12:13:59,334 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-11-12 12:13:59,334 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-11-12 12:13:59,334 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-11-12 12:13:59,335 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-11-12 12:13:59,335 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-11-12 12:13:59,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-12 12:13:59,335 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-12 12:13:59,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 12:13:59,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 12:13:59,338 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 12:13:59,481 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 12:13:59,483 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 12:14:00,581 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 12:14:00,581 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 12:14:04,293 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 12:14:04,294 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-12 12:14:04,294 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:14:04 BoogieIcfgContainer [2024-11-12 12:14:04,294 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 12:14:04,296 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 12:14:04,296 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 12:14:04,298 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 12:14:04,299 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:13:58" (1/3) ... [2024-11-12 12:14:04,299 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31ad655b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:14:04, skipping insertion in model container [2024-11-12 12:14:04,299 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:59" (2/3) ... [2024-11-12 12:14:04,299 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31ad655b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:14:04, skipping insertion in model container [2024-11-12 12:14:04,300 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:14:04" (3/3) ... [2024-11-12 12:14:04,301 INFO L112 eAbstractionObserver]: Analyzing ICFG mix005_power.oepc_pso.oepc_rmo.oepc.i [2024-11-12 12:14:04,315 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 12:14:04,315 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 286 error locations. [2024-11-12 12:14:04,315 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 12:14:04,552 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-12 12:14:04,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 430 places, 420 transitions, 856 flow [2024-11-12 12:14:04,703 INFO L124 PetriNetUnfolderBase]: 3/416 cut-off events. [2024-11-12 12:14:04,704 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 12:14:04,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 429 conditions, 416 events. 3/416 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 2291 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 377. Up to 2 conditions per place. [2024-11-12 12:14:04,722 INFO L82 GeneralOperation]: Start removeDead. Operand has 430 places, 420 transitions, 856 flow [2024-11-12 12:14:04,752 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 426 places, 416 transitions, 844 flow [2024-11-12 12:14:04,764 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 12:14:04,770 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;@23e0f02b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 12:14:04,770 INFO L334 AbstractCegarLoop]: Starting to check reachability of 537 error locations. [2024-11-12 12:14:04,778 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 12:14:04,779 INFO L124 PetriNetUnfolderBase]: 0/48 cut-off events. [2024-11-12 12:14:04,779 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 12:14:04,779 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 12:14:04,780 INFO L206 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] [2024-11-12 12:14:04,780 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONDATA_RACE === [P0Err0ASSERT_VIOLATIONDATA_RACE, P0Err1ASSERT_VIOLATIONDATA_RACE, P0Err2ASSERT_VIOLATIONDATA_RACE, P0Err3ASSERT_VIOLATIONDATA_RACE (and 533 more)] === [2024-11-12 12:14:04,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:14:04,785 INFO L85 PathProgramCache]: Analyzing trace with hash 509378849, now seen corresponding path program 1 times [2024-11-12 12:14:04,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:14:04,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626937508] [2024-11-12 12:14:04,793 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:14:04,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:14:04,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:14:04,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 12:14:04,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 12:14:04,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626937508] [2024-11-12 12:14:04,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626937508] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 12:14:04,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 12:14:04,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-12 12:14:04,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323285752] [2024-11-12 12:14:04,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 12:14:05,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-12 12:14:05,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 12:14:05,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-12 12:14:05,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-12 12:14:05,037 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 420 [2024-11-12 12:14:05,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 416 transitions, 844 flow. Second operand has 2 states, 2 states have (on average 108.0) internal successors, (216), 2 states have internal predecessors, (216), 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) [2024-11-12 12:14:05,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 12:14:05,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 420 [2024-11-12 12:14:05,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 12:14:15,020 INFO L124 PetriNetUnfolderBase]: 11270/30766 cut-off events. [2024-11-12 12:14:15,020 INFO L125 PetriNetUnfolderBase]: For 181/181 co-relation queries the response was YES. [2024-11-12 12:14:15,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46184 conditions, 30766 events. 11270/30766 cut-off events. For 181/181 co-relation queries the response was YES. Maximal size of possible extension queue 1243. Compared 384819 event pairs, 11270 based on Foata normal form. 2642/31410 useless extension candidates. Maximal degree in co-relation 46130. Up to 15051 conditions per place. [2024-11-12 12:14:15,266 INFO L140 encePairwiseOnDemand]: 133/420 looper letters, 25 selfloop transitions, 0 changer transitions 0/127 dead transitions. [2024-11-12 12:14:15,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 127 transitions, 316 flow [2024-11-12 12:14:15,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-12 12:14:15,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-12 12:14:15,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 526 transitions. [2024-11-12 12:14:15,281 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6261904761904762 [2024-11-12 12:14:15,285 INFO L175 Difference]: Start difference. First operand has 426 places, 416 transitions, 844 flow. Second operand 2 states and 526 transitions. [2024-11-12 12:14:15,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 127 transitions, 316 flow [2024-11-12 12:14:15,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 127 transitions, 312 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-12 12:14:15,291 INFO L231 Difference]: Finished difference. Result has 137 places, 127 transitions, 262 flow [2024-11-12 12:14:15,292 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=262, PETRI_PLACES=137, PETRI_TRANSITIONS=127} [2024-11-12 12:14:15,297 INFO L279 CegarLoopForPetriNet]: 426 programPoint places, -289 predicate places. [2024-11-12 12:14:15,297 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 127 transitions, 262 flow [2024-11-12 12:14:15,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 108.0) internal successors, (216), 2 states have internal predecessors, (216), 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) [2024-11-12 12:14:15,298 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 12:14:15,298 INFO L206 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] [2024-11-12 12:14:15,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 12:14:15,298 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [P0Err0ASSERT_VIOLATIONDATA_RACE, P0Err1ASSERT_VIOLATIONDATA_RACE, P0Err2ASSERT_VIOLATIONDATA_RACE, P0Err3ASSERT_VIOLATIONDATA_RACE (and 533 more)] === [2024-11-12 12:14:15,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:14:15,299 INFO L85 PathProgramCache]: Analyzing trace with hash 634238826, now seen corresponding path program 1 times [2024-11-12 12:14:15,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:14:15,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856096402] [2024-11-12 12:14:15,299 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:14:15,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:14:15,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:14:15,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 12:14:15,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 12:14:15,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856096402] [2024-11-12 12:14:15,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856096402] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 12:14:15,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 12:14:15,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 12:14:15,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410165071] [2024-11-12 12:14:15,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 12:14:15,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 12:14:15,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 12:14:15,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 12:14:15,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 12:14:15,463 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 420 [2024-11-12 12:14:15,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 127 transitions, 262 flow. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 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) [2024-11-12 12:14:15,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 12:14:15,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 420 [2024-11-12 12:14:15,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 12:14:27,501 INFO L124 PetriNetUnfolderBase]: 17150/44374 cut-off events. [2024-11-12 12:14:27,502 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 12:14:27,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67469 conditions, 44374 events. 17150/44374 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1212. Compared 540596 event pairs, 5390 based on Foata normal form. 0/41621 useless extension candidates. Maximal degree in co-relation 67466. Up to 15360 conditions per place. [2024-11-12 12:14:27,792 INFO L140 encePairwiseOnDemand]: 418/420 looper letters, 44 selfloop transitions, 1 changer transitions 0/144 dead transitions. [2024-11-12 12:14:27,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 144 transitions, 386 flow [2024-11-12 12:14:27,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 12:14:27,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 12:14:27,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 358 transitions. [2024-11-12 12:14:27,796 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2841269841269841 [2024-11-12 12:14:27,796 INFO L175 Difference]: Start difference. First operand has 137 places, 127 transitions, 262 flow. Second operand 3 states and 358 transitions. [2024-11-12 12:14:27,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 144 transitions, 386 flow [2024-11-12 12:14:27,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 144 transitions, 386 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 12:14:27,799 INFO L231 Difference]: Finished difference. Result has 138 places, 126 transitions, 262 flow [2024-11-12 12:14:27,800 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=262, PETRI_PLACES=138, PETRI_TRANSITIONS=126} [2024-11-12 12:14:27,801 INFO L279 CegarLoopForPetriNet]: 426 programPoint places, -288 predicate places. [2024-11-12 12:14:27,801 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 126 transitions, 262 flow [2024-11-12 12:14:27,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 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) [2024-11-12 12:14:27,802 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 12:14:27,802 INFO L206 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] [2024-11-12 12:14:27,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 12:14:27,802 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONDATA_RACE === [P0Err0ASSERT_VIOLATIONDATA_RACE, P0Err1ASSERT_VIOLATIONDATA_RACE, P0Err2ASSERT_VIOLATIONDATA_RACE, P0Err3ASSERT_VIOLATIONDATA_RACE (and 533 more)] === [2024-11-12 12:14:27,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:14:27,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1691922396, now seen corresponding path program 1 times [2024-11-12 12:14:27,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:14:27,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069781986] [2024-11-12 12:14:27,804 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:14:27,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:14:27,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:14:27,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 12:14:27,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 12:14:27,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069781986] [2024-11-12 12:14:27,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069781986] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 12:14:27,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 12:14:27,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 12:14:27,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242794233] [2024-11-12 12:14:27,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 12:14:27,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 12:14:27,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 12:14:27,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 12:14:27,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 12:14:27,925 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 420 [2024-11-12 12:14:27,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 126 transitions, 262 flow. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 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) [2024-11-12 12:14:27,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 12:14:27,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 420 [2024-11-12 12:14:27,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand