./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/pthread-wmm/mix021.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.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/mix021.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 576d0750cd121d18ae295ddde1dd1649436f79f5ff3834655e4b6c15fd1260db --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 21:42:36,681 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 21:42:36,728 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2025-03-08 21:42:36,731 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 21:42:36,732 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 21:42:36,755 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 21:42:36,756 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 21:42:36,756 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 21:42:36,756 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 21:42:36,757 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 21:42:36,757 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 21:42:36,757 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 21:42:36,758 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 21:42:36,758 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 21:42:36,758 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 21:42:36,758 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 21:42:36,758 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 21:42:36,758 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 21:42:36,758 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 21:42:36,758 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 21:42:36,758 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 21:42:36,758 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 21:42:36,758 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2025-03-08 21:42:36,758 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-08 21:42:36,759 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 21:42:36,759 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 21:42:36,759 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 21:42:36,759 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 21:42:36,759 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 21:42:36,759 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 21:42:36,759 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 21:42:36,759 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 21:42:36,759 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 21:42:36,759 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 21:42:36,759 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 21:42:36,759 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 21:42:36,759 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 21:42:36,759 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 21:42:36,759 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 21:42:36,760 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 21:42:36,760 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 21:42:36,760 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 21:42:36,760 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> 576d0750cd121d18ae295ddde1dd1649436f79f5ff3834655e4b6c15fd1260db [2025-03-08 21:42:36,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 21:42:36,999 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 21:42:37,001 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 21:42:37,002 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 21:42:37,002 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 21:42:37,003 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix021.opt.i [2025-03-08 21:42:38,192 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/632daa8e0/9488cd19ef774964aca21b8f5147fac6/FLAG22cc359b9 [2025-03-08 21:42:38,484 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 21:42:38,486 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix021.opt.i [2025-03-08 21:42:38,499 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/632daa8e0/9488cd19ef774964aca21b8f5147fac6/FLAG22cc359b9 [2025-03-08 21:42:38,516 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/632daa8e0/9488cd19ef774964aca21b8f5147fac6 [2025-03-08 21:42:38,519 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 21:42:38,520 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 21:42:38,522 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 21:42:38,522 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 21:42:38,525 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 21:42:38,526 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 09:42:38" (1/1) ... [2025-03-08 21:42:38,527 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b8775b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:42:38, skipping insertion in model container [2025-03-08 21:42:38,528 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 09:42:38" (1/1) ... [2025-03-08 21:42:38,561 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 21:42:38,819 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 21:42:38,828 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 21:42:38,912 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 21:42:38,950 INFO L204 MainTranslator]: Completed translation [2025-03-08 21:42:38,950 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:42:38 WrapperNode [2025-03-08 21:42:38,951 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 21:42:38,951 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 21:42:38,951 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 21:42:38,952 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 21:42:38,957 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:42:38" (1/1) ... [2025-03-08 21:42:38,982 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:42:38" (1/1) ... [2025-03-08 21:42:39,036 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 963 [2025-03-08 21:42:39,037 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 21:42:39,037 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 21:42:39,037 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 21:42:39,038 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 21:42:39,047 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:42:38" (1/1) ... [2025-03-08 21:42:39,047 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:42:38" (1/1) ... [2025-03-08 21:42:39,055 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:42:38" (1/1) ... [2025-03-08 21:42:39,056 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:42:38" (1/1) ... [2025-03-08 21:42:39,074 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:42:38" (1/1) ... [2025-03-08 21:42:39,079 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:42:38" (1/1) ... [2025-03-08 21:42:39,087 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:42:38" (1/1) ... [2025-03-08 21:42:39,090 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:42:38" (1/1) ... [2025-03-08 21:42:39,098 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 21:42:39,102 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 21:42:39,103 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 21:42:39,103 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 21:42:39,103 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:42:38" (1/1) ... [2025-03-08 21:42:39,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 21:42:39,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 21:42:39,135 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) [2025-03-08 21:42:39,138 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 [2025-03-08 21:42:39,156 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-08 21:42:39,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 21:42:39,156 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-03-08 21:42:39,157 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-03-08 21:42:39,157 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-03-08 21:42:39,157 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-03-08 21:42:39,157 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-03-08 21:42:39,157 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-03-08 21:42:39,157 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2025-03-08 21:42:39,157 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2025-03-08 21:42:39,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-03-08 21:42:39,157 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-08 21:42:39,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 21:42:39,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 21:42:39,159 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-08 21:42:39,328 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 21:42:39,329 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 21:42:40,493 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-08 21:42:40,494 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 21:42:44,150 WARN L170 LargeBlockEncoding]: Complex 2:22 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-03-08 21:42:44,176 WARN L170 LargeBlockEncoding]: Complex 2:55 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-03-08 21:42:44,321 WARN L170 LargeBlockEncoding]: Complex 2:55 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-03-08 21:42:45,002 WARN L170 LargeBlockEncoding]: Complex 2:22 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-03-08 21:42:45,035 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 21:42:45,035 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 21:42:45,036 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 09:42:45 BoogieIcfgContainer [2025-03-08 21:42:45,036 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 21:42:45,040 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 21:42:45,040 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 21:42:45,043 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 21:42:45,044 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 09:42:38" (1/3) ... [2025-03-08 21:42:45,044 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5266109e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 09:42:45, skipping insertion in model container [2025-03-08 21:42:45,045 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:42:38" (2/3) ... [2025-03-08 21:42:45,045 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5266109e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 09:42:45, skipping insertion in model container [2025-03-08 21:42:45,045 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 09:42:45" (3/3) ... [2025-03-08 21:42:45,046 INFO L128 eAbstractionObserver]: Analyzing ICFG mix021.opt.i [2025-03-08 21:42:45,058 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 21:42:45,062 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mix021.opt.i that has 5 procedures, 421 locations, 1 initial locations, 0 loop locations, and 292 error locations. [2025-03-08 21:42:45,062 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-08 21:42:45,700 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-08 21:42:45,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 433 places, 577 transitions, 1170 flow [2025-03-08 21:42:46,022 INFO L124 PetriNetUnfolderBase]: 157/573 cut-off events. [2025-03-08 21:42:46,025 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-08 21:42:46,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 586 conditions, 573 events. 157/573 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 2697 event pairs, 0 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 536. Up to 3 conditions per place. [2025-03-08 21:42:46,056 INFO L82 GeneralOperation]: Start removeDead. Operand has 433 places, 577 transitions, 1170 flow [2025-03-08 21:42:46,097 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 429 places, 573 transitions, 1158 flow [2025-03-08 21:42:46,108 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 21:42:46,122 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;@78a469db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 21:42:46,122 INFO L334 AbstractCegarLoop]: Starting to check reachability of 550 error locations. [2025-03-08 21:42:46,133 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-08 21:42:46,134 INFO L124 PetriNetUnfolderBase]: 0/46 cut-off events. [2025-03-08 21:42:46,134 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-08 21:42:46,134 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 21:42:46,135 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] [2025-03-08 21:42:46,135 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err3ASSERT_VIOLATIONDATA_RACE === [P0Err3ASSERT_VIOLATIONDATA_RACE, P0Err2ASSERT_VIOLATIONDATA_RACE, P0Err1ASSERT_VIOLATIONDATA_RACE, P0Err0ASSERT_VIOLATIONDATA_RACE (and 546 more)] === [2025-03-08 21:42:46,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:42:46,140 INFO L85 PathProgramCache]: Analyzing trace with hash -818031780, now seen corresponding path program 1 times [2025-03-08 21:42:46,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:42:46,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219854544] [2025-03-08 21:42:46,149 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:42:46,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:42:46,249 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-03-08 21:42:46,266 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-03-08 21:42:46,266 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:42:46,266 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:42:46,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:42:46,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:42:46,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219854544] [2025-03-08 21:42:46,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219854544] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:42:46,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:42:46,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-08 21:42:46,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546764460] [2025-03-08 21:42:46,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:42:46,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 21:42:46,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:42:46,359 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 21:42:46,360 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 21:42:46,362 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 577 [2025-03-08 21:42:46,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 573 transitions, 1158 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) [2025-03-08 21:42:46,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 21:42:46,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 577 [2025-03-08 21:42:46,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 21:43:18,853 INFO L124 PetriNetUnfolderBase]: 11545/27864 cut-off events. [2025-03-08 21:43:18,854 INFO L125 PetriNetUnfolderBase]: For 156/156 co-relation queries the response was YES. [2025-03-08 21:43:18,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42882 conditions, 27864 events. 11545/27864 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 1045. Compared 315120 event pairs, 9295 based on Foata normal form. 2193/26114 useless extension candidates. Maximal degree in co-relation 42830. Up to 14701 conditions per place. [2025-03-08 21:43:19,055 INFO L140 encePairwiseOnDemand]: 134/577 looper letters, 28 selfloop transitions, 0 changer transitions 0/128 dead transitions. [2025-03-08 21:43:19,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 128 transitions, 324 flow [2025-03-08 21:43:19,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 21:43:19,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-03-08 21:43:19,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 681 transitions. [2025-03-08 21:43:19,074 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5901213171577123 [2025-03-08 21:43:19,077 INFO L175 Difference]: Start difference. First operand has 429 places, 573 transitions, 1158 flow. Second operand 2 states and 681 transitions. [2025-03-08 21:43:19,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 128 transitions, 324 flow [2025-03-08 21:43:19,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 128 transitions, 320 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-08 21:43:19,086 INFO L231 Difference]: Finished difference. Result has 134 places, 128 transitions, 264 flow [2025-03-08 21:43:19,088 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=133, 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=134, PETRI_TRANSITIONS=128} [2025-03-08 21:43:19,091 INFO L279 CegarLoopForPetriNet]: 429 programPoint places, -295 predicate places. [2025-03-08 21:43:19,093 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 128 transitions, 264 flow [2025-03-08 21:43:19,093 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) [2025-03-08 21:43:19,093 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 21:43:19,093 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] [2025-03-08 21:43:19,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 21:43:19,094 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONDATA_RACE === [P0Err3ASSERT_VIOLATIONDATA_RACE, P0Err2ASSERT_VIOLATIONDATA_RACE, P0Err1ASSERT_VIOLATIONDATA_RACE, P0Err0ASSERT_VIOLATIONDATA_RACE (and 546 more)] === [2025-03-08 21:43:19,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:43:19,094 INFO L85 PathProgramCache]: Analyzing trace with hash -271842243, now seen corresponding path program 1 times [2025-03-08 21:43:19,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:43:19,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615162562] [2025-03-08 21:43:19,095 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:43:19,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:43:19,134 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-08 21:43:19,151 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-08 21:43:19,152 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:43:19,153 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:43:19,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:43:19,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:43:19,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615162562] [2025-03-08 21:43:19,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615162562] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:43:19,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:43:19,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 21:43:19,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118902008] [2025-03-08 21:43:19,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:43:19,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 21:43:19,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:43:19,245 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 21:43:19,245 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 21:43:19,251 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 577 [2025-03-08 21:43:19,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 128 transitions, 264 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) [2025-03-08 21:43:19,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 21:43:19,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 577 [2025-03-08 21:43:19,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 21:44:02,429 INFO L124 PetriNetUnfolderBase]: 17145/39892 cut-off events. [2025-03-08 21:44:02,430 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-08 21:44:02,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62007 conditions, 39892 events. 17145/39892 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1016. Compared 443145 event pairs, 4445 based on Foata normal form. 0/34590 useless extension candidates. Maximal degree in co-relation 62004. Up to 14950 conditions per place. [2025-03-08 21:44:02,660 INFO L140 encePairwiseOnDemand]: 575/577 looper letters, 49 selfloop transitions, 1 changer transitions 0/147 dead transitions. [2025-03-08 21:44:02,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 147 transitions, 402 flow [2025-03-08 21:44:02,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 21:44:02,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-08 21:44:02,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2025-03-08 21:44:02,663 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.20623916811091855 [2025-03-08 21:44:02,663 INFO L175 Difference]: Start difference. First operand has 134 places, 128 transitions, 264 flow. Second operand 3 states and 357 transitions. [2025-03-08 21:44:02,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 147 transitions, 402 flow [2025-03-08 21:44:02,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 147 transitions, 402 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-08 21:44:02,667 INFO L231 Difference]: Finished difference. Result has 135 places, 127 transitions, 264 flow [2025-03-08 21:44:02,668 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=577, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=133, 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=135, PETRI_TRANSITIONS=127} [2025-03-08 21:44:02,668 INFO L279 CegarLoopForPetriNet]: 429 programPoint places, -294 predicate places. [2025-03-08 21:44:02,668 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 127 transitions, 264 flow [2025-03-08 21:44:02,669 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) [2025-03-08 21:44:02,669 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 21:44:02,669 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] [2025-03-08 21:44:02,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 21:44:02,669 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [P0Err3ASSERT_VIOLATIONDATA_RACE, P0Err2ASSERT_VIOLATIONDATA_RACE, P0Err1ASSERT_VIOLATIONDATA_RACE, P0Err0ASSERT_VIOLATIONDATA_RACE (and 546 more)] === [2025-03-08 21:44:02,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:44:02,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1348909557, now seen corresponding path program 1 times [2025-03-08 21:44:02,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:44:02,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769286965] [2025-03-08 21:44:02,673 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:44:02,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:44:02,719 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-03-08 21:44:02,741 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-03-08 21:44:02,741 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:44:02,741 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:44:02,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:44:02,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:44:02,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769286965] [2025-03-08 21:44:02,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769286965] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:44:02,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:44:02,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 21:44:02,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655267187] [2025-03-08 21:44:02,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:44:02,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 21:44:02,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:44:02,845 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 21:44:02,846 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 21:44:02,848 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 577 [2025-03-08 21:44:02,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 127 transitions, 264 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) [2025-03-08 21:44:02,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 21:44:02,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 577 [2025-03-08 21:44:02,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand