./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/pthread-divine/barrier_2t.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-divine/barrier_2t.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 f16bd48636db1837ea8e0ca595ad8610f40d584c5526c4d4feced86ef6fdf308 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 21:20:14,345 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 21:20:14,396 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2025-01-09 21:20:14,402 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 21:20:14,402 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 21:20:14,423 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 21:20:14,424 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 21:20:14,424 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 21:20:14,424 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 21:20:14,425 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 21:20:14,425 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 21:20:14,425 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 21:20:14,426 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 21:20:14,426 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 21:20:14,426 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 21:20:14,426 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 21:20:14,426 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 21:20:14,426 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 21:20:14,427 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 21:20:14,427 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 21:20:14,427 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 21:20:14,427 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 21:20:14,427 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2025-01-09 21:20:14,427 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-09 21:20:14,427 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 21:20:14,427 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 21:20:14,427 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 21:20:14,427 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 21:20:14,427 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 21:20:14,427 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 21:20:14,427 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 21:20:14,428 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 21:20:14,428 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 21:20:14,428 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 21:20:14,428 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 21:20:14,428 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 21:20:14,428 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 21:20:14,428 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 21:20:14,428 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 21:20:14,429 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 21:20:14,429 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 21:20:14,429 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 21:20:14,429 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 21:20:14,429 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 21:20:14,429 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 21:20:14,429 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 21:20:14,429 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-jdk21/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 -> f16bd48636db1837ea8e0ca595ad8610f40d584c5526c4d4feced86ef6fdf308 [2025-01-09 21:20:14,668 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 21:20:14,676 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 21:20:14,678 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 21:20:14,679 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 21:20:14,680 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 21:20:14,681 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-divine/barrier_2t.i [2025-01-09 21:20:15,829 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/acc6b5ce6/01139fb760c74482bf9e64abd729ab26/FLAGf70b937c8 [2025-01-09 21:20:16,160 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 21:20:16,161 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-divine/barrier_2t.i [2025-01-09 21:20:16,172 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/acc6b5ce6/01139fb760c74482bf9e64abd729ab26/FLAGf70b937c8 [2025-01-09 21:20:16,416 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/acc6b5ce6/01139fb760c74482bf9e64abd729ab26 [2025-01-09 21:20:16,418 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 21:20:16,419 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 21:20:16,420 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 21:20:16,420 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 21:20:16,423 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 21:20:16,424 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 09:20:16" (1/1) ... [2025-01-09 21:20:16,424 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fdd72e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:20:16, skipping insertion in model container [2025-01-09 21:20:16,424 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 09:20:16" (1/1) ... [2025-01-09 21:20:16,451 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 21:20:16,687 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 21:20:16,697 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 21:20:16,754 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 21:20:16,776 INFO L204 MainTranslator]: Completed translation [2025-01-09 21:20:16,777 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:20:16 WrapperNode [2025-01-09 21:20:16,777 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 21:20:16,778 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 21:20:16,778 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 21:20:16,778 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 21:20:16,782 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:20:16" (1/1) ... [2025-01-09 21:20:16,802 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:20:16" (1/1) ... [2025-01-09 21:20:16,842 INFO L138 Inliner]: procedures = 174, calls = 94, calls flagged for inlining = 19, calls inlined = 31, statements flattened = 1010 [2025-01-09 21:20:16,842 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 21:20:16,843 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 21:20:16,843 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 21:20:16,843 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 21:20:16,850 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:20:16" (1/1) ... [2025-01-09 21:20:16,850 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:20:16" (1/1) ... [2025-01-09 21:20:16,860 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:20:16" (1/1) ... [2025-01-09 21:20:16,860 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:20:16" (1/1) ... [2025-01-09 21:20:16,902 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:20:16" (1/1) ... [2025-01-09 21:20:16,905 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:20:16" (1/1) ... [2025-01-09 21:20:16,913 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:20:16" (1/1) ... [2025-01-09 21:20:16,916 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:20:16" (1/1) ... [2025-01-09 21:20:16,922 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:20:16" (1/1) ... [2025-01-09 21:20:16,931 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 21:20:16,933 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 21:20:16,933 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 21:20:16,933 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 21:20:16,934 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:20:16" (1/1) ... [2025-01-09 21:20:16,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 21:20:16,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 21:20:16,961 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 21:20:16,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 21:20:16,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-01-09 21:20:16,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-01-09 21:20:16,983 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-01-09 21:20:16,983 INFO L130 BoogieDeclarations]: Found specification of procedure worker_fn [2025-01-09 21:20:16,983 INFO L138 BoogieDeclarations]: Found implementation of procedure worker_fn [2025-01-09 21:20:16,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 21:20:16,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2025-01-09 21:20:16,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-09 21:20:16,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2025-01-09 21:20:16,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-09 21:20:16,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-01-09 21:20:16,984 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-01-09 21:20:16,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 21:20:16,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 21:20:16,986 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-09 21:20:17,133 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 21:20:17,134 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 21:20:18,274 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-09 21:20:18,275 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 21:20:18,332 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 21:20:18,335 INFO L312 CfgBuilder]: Removed 8 assume(true) statements. [2025-01-09 21:20:18,335 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 09:20:18 BoogieIcfgContainer [2025-01-09 21:20:18,335 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 21:20:18,337 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 21:20:18,337 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 21:20:18,341 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 21:20:18,341 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 09:20:16" (1/3) ... [2025-01-09 21:20:18,341 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@272547d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 09:20:18, skipping insertion in model container [2025-01-09 21:20:18,342 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:20:16" (2/3) ... [2025-01-09 21:20:18,342 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@272547d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 09:20:18, skipping insertion in model container [2025-01-09 21:20:18,343 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 09:20:18" (3/3) ... [2025-01-09 21:20:18,344 INFO L128 eAbstractionObserver]: Analyzing ICFG barrier_2t.i [2025-01-09 21:20:18,355 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 21:20:18,357 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG barrier_2t.i that has 2 procedures, 1112 locations, 1 initial locations, 20 loop locations, and 99 error locations. [2025-01-09 21:20:18,357 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-09 21:20:18,528 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-01-09 21:20:18,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1115 places, 1193 transitions, 2393 flow [2025-01-09 21:20:19,125 INFO L124 PetriNetUnfolderBase]: 122/1764 cut-off events. [2025-01-09 21:20:19,129 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-01-09 21:20:19,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1769 conditions, 1764 events. 122/1764 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 7040 event pairs, 0 based on Foata normal form. 0/1492 useless extension candidates. Maximal degree in co-relation 1073. Up to 4 conditions per place. [2025-01-09 21:20:19,176 INFO L82 GeneralOperation]: Start removeDead. Operand has 1115 places, 1193 transitions, 2393 flow [2025-01-09 21:20:19,199 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1115 places, 1193 transitions, 2393 flow [2025-01-09 21:20:19,208 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 21:20:19,219 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;@97cb8c2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 21:20:19,219 INFO L334 AbstractCegarLoop]: Starting to check reachability of 144 error locations. [2025-01-09 21:20:19,225 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-09 21:20:19,226 INFO L124 PetriNetUnfolderBase]: 0/49 cut-off events. [2025-01-09 21:20:19,226 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-09 21:20:19,226 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:20:19,227 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] [2025-01-09 21:20:19,227 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 141 more)] === [2025-01-09 21:20:19,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:20:19,233 INFO L85 PathProgramCache]: Analyzing trace with hash -825672506, now seen corresponding path program 1 times [2025-01-09 21:20:19,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:20:19,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694430499] [2025-01-09 21:20:19,239 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:20:19,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:20:19,304 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-01-09 21:20:19,332 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-01-09 21:20:19,332 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:20:19,332 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:20:19,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 21:20:19,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 21:20:19,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694430499] [2025-01-09 21:20:19,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694430499] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 21:20:19,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 21:20:19,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 21:20:19,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085047901] [2025-01-09 21:20:19,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 21:20:19,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 21:20:19,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 21:20:19,985 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 21:20:19,986 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-01-09 21:20:21,435 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 857 out of 1193 [2025-01-09 21:20:21,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1115 places, 1193 transitions, 2393 flow. Second operand has 6 states, 6 states have (on average 858.5) internal successors, (5151), 6 states have internal predecessors, (5151), 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) [2025-01-09 21:20:21,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 21:20:21,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 857 of 1193 [2025-01-09 21:20:21,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 21:20:33,992 INFO L124 PetriNetUnfolderBase]: 18612/86406 cut-off events. [2025-01-09 21:20:33,993 INFO L125 PetriNetUnfolderBase]: For 4/7 co-relation queries the response was YES. [2025-01-09 21:20:34,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119720 conditions, 86406 events. 18612/86406 cut-off events. For 4/7 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 1058395 event pairs, 16093 based on Foata normal form. 7018/82913 useless extension candidates. Maximal degree in co-relation 118907. Up to 33304 conditions per place. [2025-01-09 21:20:34,293 INFO L140 encePairwiseOnDemand]: 1133/1193 looper letters, 276 selfloop transitions, 5 changer transitions 3/1115 dead transitions. [2025-01-09 21:20:34,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1096 places, 1115 transitions, 2799 flow [2025-01-09 21:20:34,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 21:20:34,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-09 21:20:34,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 5478 transitions. [2025-01-09 21:20:34,323 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7652975691533948 [2025-01-09 21:20:34,324 INFO L175 Difference]: Start difference. First operand has 1115 places, 1193 transitions, 2393 flow. Second operand 6 states and 5478 transitions. [2025-01-09 21:20:34,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1096 places, 1115 transitions, 2799 flow [2025-01-09 21:20:34,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1096 places, 1115 transitions, 2799 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-09 21:20:34,351 INFO L231 Difference]: Finished difference. Result has 1096 places, 1112 transitions, 2241 flow [2025-01-09 21:20:34,354 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=1193, PETRI_DIFFERENCE_MINUEND_FLOW=2237, PETRI_DIFFERENCE_MINUEND_PLACES=1091, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2241, PETRI_PLACES=1096, PETRI_TRANSITIONS=1112} [2025-01-09 21:20:34,357 INFO L279 CegarLoopForPetriNet]: 1115 programPoint places, -19 predicate places. [2025-01-09 21:20:34,358 INFO L471 AbstractCegarLoop]: Abstraction has has 1096 places, 1112 transitions, 2241 flow [2025-01-09 21:20:34,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 858.5) internal successors, (5151), 6 states have internal predecessors, (5151), 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) [2025-01-09 21:20:34,360 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:20:34,360 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] [2025-01-09 21:20:34,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 21:20:34,361 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 141 more)] === [2025-01-09 21:20:34,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:20:34,362 INFO L85 PathProgramCache]: Analyzing trace with hash -974565751, now seen corresponding path program 1 times [2025-01-09 21:20:34,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:20:34,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243127737] [2025-01-09 21:20:34,362 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:20:34,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:20:34,383 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-01-09 21:20:34,388 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-01-09 21:20:34,388 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:20:34,388 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:20:34,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 21:20:34,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 21:20:34,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243127737] [2025-01-09 21:20:34,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243127737] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 21:20:34,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 21:20:34,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 21:20:34,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349656512] [2025-01-09 21:20:34,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 21:20:34,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 21:20:34,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 21:20:34,589 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 21:20:34,589 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 21:20:34,635 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 1103 out of 1193 [2025-01-09 21:20:34,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1096 places, 1112 transitions, 2241 flow. Second operand has 3 states, 3 states have (on average 1104.3333333333333) internal successors, (3313), 3 states have internal predecessors, (3313), 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) [2025-01-09 21:20:34,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 21:20:34,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1103 of 1193 [2025-01-09 21:20:34,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 21:20:36,377 INFO L124 PetriNetUnfolderBase]: 563/9912 cut-off events. [2025-01-09 21:20:36,378 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-01-09 21:20:36,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10537 conditions, 9912 events. 563/9912 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 90895 event pairs, 210 based on Foata normal form. 1/8500 useless extension candidates. Maximal degree in co-relation 10453. Up to 608 conditions per place. [2025-01-09 21:20:36,442 INFO L140 encePairwiseOnDemand]: 1190/1193 looper letters, 35 selfloop transitions, 2 changer transitions 0/1113 dead transitions. [2025-01-09 21:20:36,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1095 places, 1113 transitions, 2317 flow [2025-01-09 21:20:36,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 21:20:36,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-09 21:20:36,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 3347 transitions. [2025-01-09 21:20:36,451 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.9351774238614138 [2025-01-09 21:20:36,452 INFO L175 Difference]: Start difference. First operand has 1096 places, 1112 transitions, 2241 flow. Second operand 3 states and 3347 transitions. [2025-01-09 21:20:36,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1095 places, 1113 transitions, 2317 flow [2025-01-09 21:20:36,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1090 places, 1113 transitions, 2307 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-01-09 21:20:36,468 INFO L231 Difference]: Finished difference. Result has 1091 places, 1113 transitions, 2243 flow [2025-01-09 21:20:36,470 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=1193, PETRI_DIFFERENCE_MINUEND_FLOW=2231, PETRI_DIFFERENCE_MINUEND_PLACES=1088, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2243, PETRI_PLACES=1091, PETRI_TRANSITIONS=1113} [2025-01-09 21:20:36,470 INFO L279 CegarLoopForPetriNet]: 1115 programPoint places, -24 predicate places. [2025-01-09 21:20:36,471 INFO L471 AbstractCegarLoop]: Abstraction has has 1091 places, 1113 transitions, 2243 flow [2025-01-09 21:20:36,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1104.3333333333333) internal successors, (3313), 3 states have internal predecessors, (3313), 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) [2025-01-09 21:20:36,472 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:20:36,472 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] [2025-01-09 21:20:36,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 21:20:36,473 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 141 more)] === [2025-01-09 21:20:36,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:20:36,473 INFO L85 PathProgramCache]: Analyzing trace with hash -306021302, now seen corresponding path program 1 times [2025-01-09 21:20:36,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:20:36,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105540394] [2025-01-09 21:20:36,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:20:36,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:20:36,487 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-01-09 21:20:36,495 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-01-09 21:20:36,496 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:20:36,496 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:20:36,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 21:20:36,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 21:20:36,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105540394] [2025-01-09 21:20:36,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105540394] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 21:20:36,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 21:20:36,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 21:20:36,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744138673] [2025-01-09 21:20:36,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 21:20:36,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 21:20:36,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 21:20:36,857 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 21:20:36,857 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-01-09 21:20:38,123 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 857 out of 1193 [2025-01-09 21:20:38,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1091 places, 1113 transitions, 2243 flow. Second operand has 6 states, 6 states have (on average 858.5) internal successors, (5151), 6 states have internal predecessors, (5151), 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) [2025-01-09 21:20:38,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 21:20:38,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 857 of 1193 [2025-01-09 21:20:38,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 21:20:50,392 INFO L124 PetriNetUnfolderBase]: 18612/86430 cut-off events. [2025-01-09 21:20:50,393 INFO L125 PetriNetUnfolderBase]: For 7/10 co-relation queries the response was YES. [2025-01-09 21:20:50,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119759 conditions, 86430 events. 18612/86430 cut-off events. For 7/10 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 1057866 event pairs, 16093 based on Foata normal form. 0/75921 useless extension candidates. Maximal degree in co-relation 119680. Up to 33307 conditions per place. [2025-01-09 21:20:50,910 INFO L140 encePairwiseOnDemand]: 1187/1193 looper letters, 277 selfloop transitions, 5 changer transitions 0/1112 dead transitions. [2025-01-09 21:20:50,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1095 places, 1112 transitions, 2805 flow [2025-01-09 21:20:50,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 21:20:50,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-09 21:20:50,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 5424 transitions. [2025-01-09 21:20:50,919 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.757753562447611 [2025-01-09 21:20:50,920 INFO L175 Difference]: Start difference. First operand has 1091 places, 1113 transitions, 2243 flow. Second operand 6 states and 5424 transitions. [2025-01-09 21:20:50,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1095 places, 1112 transitions, 2805 flow [2025-01-09 21:20:50,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1094 places, 1112 transitions, 2803 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-09 21:20:50,933 INFO L231 Difference]: Finished difference. Result has 1094 places, 1112 transitions, 2249 flow [2025-01-09 21:20:50,934 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=1193, PETRI_DIFFERENCE_MINUEND_FLOW=2239, PETRI_DIFFERENCE_MINUEND_PLACES=1089, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2249, PETRI_PLACES=1094, PETRI_TRANSITIONS=1112} [2025-01-09 21:20:50,935 INFO L279 CegarLoopForPetriNet]: 1115 programPoint places, -21 predicate places. [2025-01-09 21:20:50,935 INFO L471 AbstractCegarLoop]: Abstraction has has 1094 places, 1112 transitions, 2249 flow [2025-01-09 21:20:50,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 858.5) internal successors, (5151), 6 states have internal predecessors, (5151), 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) [2025-01-09 21:20:50,937 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:20:50,937 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] [2025-01-09 21:20:50,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 21:20:50,937 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 141 more)] === [2025-01-09 21:20:50,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:20:50,938 INFO L85 PathProgramCache]: Analyzing trace with hash -697554902, now seen corresponding path program 1 times [2025-01-09 21:20:50,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:20:50,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38756418] [2025-01-09 21:20:50,938 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:20:50,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:20:50,950 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-01-09 21:20:50,957 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-01-09 21:20:50,957 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:20:50,957 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:20:51,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 21:20:51,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 21:20:51,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38756418] [2025-01-09 21:20:51,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38756418] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 21:20:51,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 21:20:51,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 21:20:51,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080460773] [2025-01-09 21:20:51,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 21:20:51,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 21:20:51,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 21:20:51,267 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 21:20:51,267 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-01-09 21:20:52,947 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 857 out of 1193 [2025-01-09 21:20:52,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1094 places, 1112 transitions, 2249 flow. Second operand has 6 states, 6 states have (on average 858.5) internal successors, (5151), 6 states have internal predecessors, (5151), 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) [2025-01-09 21:20:52,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 21:20:52,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 857 of 1193 [2025-01-09 21:20:52,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand