./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/pthread-ext/09_fmaxsym-zero.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version f8ab0bd5 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-ext/09_fmaxsym-zero.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 41cf9d90b654ba629ed26494b45977a61fd5035aced9f092d4e43a94133522bd --- Real Ultimate output --- This is Ultimate 0.3.0-?-f8ab0bd-m [2025-03-13 21:58:42,070 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-13 21:58:42,122 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2025-03-13 21:58:42,125 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-13 21:58:42,126 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-13 21:58:42,154 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-13 21:58:42,155 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-13 21:58:42,155 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-13 21:58:42,155 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-13 21:58:42,155 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-13 21:58:42,155 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-13 21:58:42,155 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-13 21:58:42,155 INFO L153 SettingsManager]: * Use SBE=true [2025-03-13 21:58:42,155 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-13 21:58:42,155 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-13 21:58:42,155 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-13 21:58:42,155 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-13 21:58:42,156 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-13 21:58:42,156 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-13 21:58:42,156 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-13 21:58:42,156 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-13 21:58:42,156 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-13 21:58:42,156 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2025-03-13 21:58:42,156 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-13 21:58:42,156 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-13 21:58:42,156 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-13 21:58:42,156 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-13 21:58:42,156 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-13 21:58:42,156 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-13 21:58:42,156 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-13 21:58:42,156 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-13 21:58:42,156 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-13 21:58:42,156 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-13 21:58:42,156 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-13 21:58:42,156 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-13 21:58:42,156 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-13 21:58:42,156 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-13 21:58:42,156 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-13 21:58:42,156 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-13 21:58:42,156 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-13 21:58:42,156 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-13 21:58:42,157 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-13 21:58:42,157 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 -> 41cf9d90b654ba629ed26494b45977a61fd5035aced9f092d4e43a94133522bd [2025-03-13 21:58:42,411 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-13 21:58:42,417 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-13 21:58:42,419 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-13 21:58:42,420 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-13 21:58:42,421 INFO L274 PluginConnector]: CDTParser initialized [2025-03-13 21:58:42,421 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/09_fmaxsym-zero.i [2025-03-13 21:58:43,626 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d19c4db3/3f1e8eb05b804f87bfe7b7f2570bd0fe/FLAGa6857c623 [2025-03-13 21:58:43,891 INFO L384 CDTParser]: Found 1 translation units. [2025-03-13 21:58:43,892 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/09_fmaxsym-zero.i [2025-03-13 21:58:43,900 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d19c4db3/3f1e8eb05b804f87bfe7b7f2570bd0fe/FLAGa6857c623 [2025-03-13 21:58:44,197 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d19c4db3/3f1e8eb05b804f87bfe7b7f2570bd0fe [2025-03-13 21:58:44,199 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-13 21:58:44,201 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-13 21:58:44,202 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-13 21:58:44,202 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-13 21:58:44,205 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-13 21:58:44,206 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.03 09:58:44" (1/1) ... [2025-03-13 21:58:44,206 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59404952 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:58:44, skipping insertion in model container [2025-03-13 21:58:44,207 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.03 09:58:44" (1/1) ... [2025-03-13 21:58:44,241 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-13 21:58:44,461 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-13 21:58:44,478 INFO L200 MainTranslator]: Completed pre-run [2025-03-13 21:58:44,510 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-13 21:58:44,542 INFO L204 MainTranslator]: Completed translation [2025-03-13 21:58:44,543 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:58:44 WrapperNode [2025-03-13 21:58:44,543 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-13 21:58:44,544 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-13 21:58:44,544 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-13 21:58:44,544 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-13 21:58:44,549 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:58:44" (1/1) ... [2025-03-13 21:58:44,560 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:58:44" (1/1) ... [2025-03-13 21:58:44,583 INFO L138 Inliner]: procedures = 164, calls = 26, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 82 [2025-03-13 21:58:44,584 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-13 21:58:44,584 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-13 21:58:44,584 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-13 21:58:44,584 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-13 21:58:44,589 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:58:44" (1/1) ... [2025-03-13 21:58:44,589 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:58:44" (1/1) ... [2025-03-13 21:58:44,591 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:58:44" (1/1) ... [2025-03-13 21:58:44,592 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:58:44" (1/1) ... [2025-03-13 21:58:44,595 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:58:44" (1/1) ... [2025-03-13 21:58:44,596 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:58:44" (1/1) ... [2025-03-13 21:58:44,597 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:58:44" (1/1) ... [2025-03-13 21:58:44,598 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:58:44" (1/1) ... [2025-03-13 21:58:44,599 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-13 21:58:44,599 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-13 21:58:44,599 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-13 21:58:44,599 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-13 21:58:44,600 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:58:44" (1/1) ... [2025-03-13 21:58:44,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-13 21:58:44,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:58:44,629 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) [2025-03-13 21:58:44,635 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 [2025-03-13 21:58:44,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-03-13 21:58:44,650 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-03-13 21:58:44,650 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-03-13 21:58:44,650 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-13 21:58:44,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-13 21:58:44,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-03-13 21:58:44,650 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-13 21:58:44,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-13 21:58:44,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-13 21:58:44,651 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-13 21:58:44,752 INFO L256 CfgBuilder]: Building ICFG [2025-03-13 21:58:44,754 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-13 21:58:44,971 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-13 21:58:44,974 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-13 21:58:44,974 INFO L318 CfgBuilder]: Performing block encoding [2025-03-13 21:58:44,990 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-13 21:58:44,992 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.03 09:58:44 BoogieIcfgContainer [2025-03-13 21:58:44,992 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-13 21:58:44,994 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-13 21:58:44,994 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-13 21:58:44,997 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-13 21:58:44,997 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.03 09:58:44" (1/3) ... [2025-03-13 21:58:44,998 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3682a0a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.03 09:58:44, skipping insertion in model container [2025-03-13 21:58:44,998 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:58:44" (2/3) ... [2025-03-13 21:58:44,998 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3682a0a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.03 09:58:44, skipping insertion in model container [2025-03-13 21:58:44,998 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.03 09:58:44" (3/3) ... [2025-03-13 21:58:44,999 INFO L128 eAbstractionObserver]: Analyzing ICFG 09_fmaxsym-zero.i [2025-03-13 21:58:45,011 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-13 21:58:45,013 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 09_fmaxsym-zero.i that has 2 procedures, 94 locations, 1 initial locations, 2 loop locations, and 4 error locations. [2025-03-13 21:58:45,013 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-13 21:58:45,087 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-13 21:58:45,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 99 transitions, 202 flow [2025-03-13 21:58:45,164 INFO L124 PetriNetUnfolderBase]: 5/106 cut-off events. [2025-03-13 21:58:45,168 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-13 21:58:45,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 106 events. 5/106 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 81 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2025-03-13 21:58:45,172 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 99 transitions, 202 flow [2025-03-13 21:58:45,175 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 97 places, 99 transitions, 202 flow [2025-03-13 21:58:45,182 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-13 21:58:45,190 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;@18f61952, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-13 21:58:45,190 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2025-03-13 21:58:45,206 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-13 21:58:45,207 INFO L124 PetriNetUnfolderBase]: 0/47 cut-off events. [2025-03-13 21:58:45,208 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-13 21:58:45,208 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:58:45,208 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:58:45,209 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2025-03-13 21:58:45,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:58:45,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1351624833, now seen corresponding path program 1 times [2025-03-13 21:58:45,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:58:45,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407912967] [2025-03-13 21:58:45,224 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:58:45,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:58:45,295 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-03-13 21:58:45,314 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-03-13 21:58:45,315 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:58:45,315 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-13 21:58:45,315 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-13 21:58:45,321 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-03-13 21:58:45,334 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-03-13 21:58:45,334 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:58:45,334 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-13 21:58:45,358 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-13 21:58:45,360 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-13 21:58:45,362 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2025-03-13 21:58:45,363 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2025-03-13 21:58:45,364 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2025-03-13 21:58:45,364 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2025-03-13 21:58:45,365 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2025-03-13 21:58:45,365 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2025-03-13 21:58:45,365 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2025-03-13 21:58:45,365 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2025-03-13 21:58:45,365 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2025-03-13 21:58:45,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-13 21:58:45,366 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-03-13 21:58:45,368 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-13 21:58:45,372 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-03-13 21:58:45,430 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-13 21:58:45,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 163 transitions, 336 flow [2025-03-13 21:58:45,487 INFO L124 PetriNetUnfolderBase]: 10/179 cut-off events. [2025-03-13 21:58:45,487 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-13 21:58:45,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 179 events. 10/179 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 313 event pairs, 0 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 135. Up to 3 conditions per place. [2025-03-13 21:58:45,491 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 163 transitions, 336 flow [2025-03-13 21:58:45,493 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 158 places, 163 transitions, 336 flow [2025-03-13 21:58:45,494 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-13 21:58:45,494 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;@18f61952, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-13 21:58:45,494 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2025-03-13 21:58:45,511 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-13 21:58:45,511 INFO L124 PetriNetUnfolderBase]: 1/71 cut-off events. [2025-03-13 21:58:45,511 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-13 21:58:45,511 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:58:45,511 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:58:45,511 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2025-03-13 21:58:45,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:58:45,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1013209784, now seen corresponding path program 1 times [2025-03-13 21:58:45,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:58:45,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733512961] [2025-03-13 21:58:45,512 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:58:45,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:58:45,526 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-03-13 21:58:45,547 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-03-13 21:58:45,547 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:58:45,547 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-13 21:58:45,547 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-13 21:58:45,554 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-03-13 21:58:45,571 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-03-13 21:58:45,572 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:58:45,572 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-13 21:58:45,579 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-13 21:58:45,580 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-13 21:58:45,580 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2025-03-13 21:58:45,580 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2025-03-13 21:58:45,580 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 13 remaining) [2025-03-13 21:58:45,580 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 13 remaining) [2025-03-13 21:58:45,580 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 13 remaining) [2025-03-13 21:58:45,580 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2025-03-13 21:58:45,580 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2025-03-13 21:58:45,580 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2025-03-13 21:58:45,581 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2025-03-13 21:58:45,581 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2025-03-13 21:58:45,581 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2025-03-13 21:58:45,581 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2025-03-13 21:58:45,581 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2025-03-13 21:58:45,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-13 21:58:45,581 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-03-13 21:58:45,582 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-13 21:58:45,582 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-03-13 21:58:45,622 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-13 21:58:45,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 219 places, 227 transitions, 472 flow [2025-03-13 21:58:45,688 INFO L124 PetriNetUnfolderBase]: 15/252 cut-off events. [2025-03-13 21:58:45,688 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-03-13 21:58:45,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 252 events. 15/252 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 662 event pairs, 0 based on Foata normal form. 0/221 useless extension candidates. Maximal degree in co-relation 198. Up to 4 conditions per place. [2025-03-13 21:58:45,696 INFO L82 GeneralOperation]: Start removeDead. Operand has 219 places, 227 transitions, 472 flow [2025-03-13 21:58:45,698 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 219 places, 227 transitions, 472 flow [2025-03-13 21:58:45,700 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-13 21:58:45,700 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;@18f61952, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-13 21:58:45,701 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2025-03-13 21:58:45,712 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-13 21:58:45,715 INFO L124 PetriNetUnfolderBase]: 2/100 cut-off events. [2025-03-13 21:58:45,715 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-03-13 21:58:45,715 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:58:45,715 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:58:45,716 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2025-03-13 21:58:45,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:58:45,716 INFO L85 PathProgramCache]: Analyzing trace with hash 467994382, now seen corresponding path program 1 times [2025-03-13 21:58:45,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:58:45,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080665634] [2025-03-13 21:58:45,716 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:58:45,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:58:45,731 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 47 statements into 1 equivalence classes. [2025-03-13 21:58:45,739 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-03-13 21:58:45,740 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:58:45,740 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-13 21:58:45,740 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-13 21:58:45,743 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 47 statements into 1 equivalence classes. [2025-03-13 21:58:45,752 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-03-13 21:58:45,752 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:58:45,752 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-13 21:58:45,757 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-13 21:58:45,757 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-13 21:58:45,757 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2025-03-13 21:58:45,757 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2025-03-13 21:58:45,757 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2025-03-13 21:58:45,758 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2025-03-13 21:58:45,758 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2025-03-13 21:58:45,758 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2025-03-13 21:58:45,758 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2025-03-13 21:58:45,758 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2025-03-13 21:58:45,758 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2025-03-13 21:58:45,758 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2025-03-13 21:58:45,758 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2025-03-13 21:58:45,758 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2025-03-13 21:58:45,758 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2025-03-13 21:58:45,759 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2025-03-13 21:58:45,759 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2025-03-13 21:58:45,759 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2025-03-13 21:58:45,759 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2025-03-13 21:58:45,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-13 21:58:45,759 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-03-13 21:58:45,760 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-13 21:58:45,760 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2025-03-13 21:58:45,816 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-13 21:58:45,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 280 places, 291 transitions, 610 flow [2025-03-13 21:58:45,901 INFO L124 PetriNetUnfolderBase]: 20/325 cut-off events. [2025-03-13 21:58:45,901 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-03-13 21:58:45,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 344 conditions, 325 events. 20/325 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1047 event pairs, 0 based on Foata normal form. 0/284 useless extension candidates. Maximal degree in co-relation 261. Up to 5 conditions per place. [2025-03-13 21:58:45,908 INFO L82 GeneralOperation]: Start removeDead. Operand has 280 places, 291 transitions, 610 flow [2025-03-13 21:58:45,912 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 280 places, 291 transitions, 610 flow [2025-03-13 21:58:45,913 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-13 21:58:45,914 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;@18f61952, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-13 21:58:45,914 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2025-03-13 21:58:45,923 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-13 21:58:45,924 INFO L124 PetriNetUnfolderBase]: 3/139 cut-off events. [2025-03-13 21:58:45,924 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-03-13 21:58:45,924 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:58:45,924 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] [2025-03-13 21:58:45,924 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2025-03-13 21:58:45,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:58:45,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1938398546, now seen corresponding path program 1 times [2025-03-13 21:58:45,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:58:45,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994936368] [2025-03-13 21:58:45,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:58:45,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:58:45,939 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-03-13 21:58:45,964 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-03-13 21:58:45,965 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:58:45,965 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:58:46,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:58:46,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:58:46,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994936368] [2025-03-13 21:58:46,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994936368] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:58:46,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:58:46,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 21:58:46,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718874038] [2025-03-13 21:58:46,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:58:46,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-13 21:58:46,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:58:46,530 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-13 21:58:46,530 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-13 21:58:46,840 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 291 [2025-03-13 21:58:46,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 291 transitions, 610 flow. Second operand has 6 states, 6 states have (on average 251.66666666666666) internal successors, (1510), 6 states have internal predecessors, (1510), 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) [2025-03-13 21:58:46,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:58:46,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 291 [2025-03-13 21:58:46,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:58:48,119 INFO L124 PetriNetUnfolderBase]: 1211/7321 cut-off events. [2025-03-13 21:58:48,119 INFO L125 PetriNetUnfolderBase]: For 1768/1768 co-relation queries the response was YES. [2025-03-13 21:58:48,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9644 conditions, 7321 events. 1211/7321 cut-off events. For 1768/1768 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 78539 event pairs, 447 based on Foata normal form. 1901/8291 useless extension candidates. Maximal degree in co-relation 2798. Up to 689 conditions per place. [2025-03-13 21:58:48,214 INFO L140 encePairwiseOnDemand]: 272/291 looper letters, 54 selfloop transitions, 5 changer transitions 0/302 dead transitions. [2025-03-13 21:58:48,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 302 transitions, 834 flow [2025-03-13 21:58:48,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-13 21:58:48,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-13 21:58:48,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1613 transitions. [2025-03-13 21:58:48,233 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.9238258877434136 [2025-03-13 21:58:48,235 INFO L175 Difference]: Start difference. First operand has 280 places, 291 transitions, 610 flow. Second operand 6 states and 1613 transitions. [2025-03-13 21:58:48,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 302 transitions, 834 flow [2025-03-13 21:58:48,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 302 transitions, 804 flow, removed 15 selfloop flow, removed 0 redundant places. [2025-03-13 21:58:48,251 INFO L231 Difference]: Finished difference. Result has 272 places, 266 transitions, 564 flow [2025-03-13 21:58:48,253 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=564, PETRI_PLACES=272, PETRI_TRANSITIONS=266} [2025-03-13 21:58:48,256 INFO L279 CegarLoopForPetriNet]: 280 programPoint places, -8 predicate places. [2025-03-13 21:58:48,256 INFO L471 AbstractCegarLoop]: Abstraction has has 272 places, 266 transitions, 564 flow [2025-03-13 21:58:48,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 251.66666666666666) internal successors, (1510), 6 states have internal predecessors, (1510), 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) [2025-03-13 21:58:48,257 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:58:48,257 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:58:48,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-13 21:58:48,257 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2025-03-13 21:58:48,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:58:48,258 INFO L85 PathProgramCache]: Analyzing trace with hash -77826221, now seen corresponding path program 1 times [2025-03-13 21:58:48,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:58:48,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980811491] [2025-03-13 21:58:48,258 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:58:48,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:58:48,266 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-03-13 21:58:48,271 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-03-13 21:58:48,271 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:58:48,271 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-13 21:58:48,271 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-13 21:58:48,273 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-03-13 21:58:48,281 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-03-13 21:58:48,281 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:58:48,281 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-13 21:58:48,290 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-13 21:58:48,291 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-13 21:58:48,291 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2025-03-13 21:58:48,291 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (19 of 21 remaining) [2025-03-13 21:58:48,292 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 21 remaining) [2025-03-13 21:58:48,292 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (17 of 21 remaining) [2025-03-13 21:58:48,292 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (16 of 21 remaining) [2025-03-13 21:58:48,292 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (15 of 21 remaining) [2025-03-13 21:58:48,292 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 21 remaining) [2025-03-13 21:58:48,292 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 21 remaining) [2025-03-13 21:58:48,292 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 21 remaining) [2025-03-13 21:58:48,292 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 21 remaining) [2025-03-13 21:58:48,292 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 21 remaining) [2025-03-13 21:58:48,292 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 21 remaining) [2025-03-13 21:58:48,293 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 21 remaining) [2025-03-13 21:58:48,293 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 21 remaining) [2025-03-13 21:58:48,293 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 21 remaining) [2025-03-13 21:58:48,293 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 21 remaining) [2025-03-13 21:58:48,293 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 21 remaining) [2025-03-13 21:58:48,293 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 21 remaining) [2025-03-13 21:58:48,293 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 21 remaining) [2025-03-13 21:58:48,293 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 21 remaining) [2025-03-13 21:58:48,293 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 21 remaining) [2025-03-13 21:58:48,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-13 21:58:48,293 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-13 21:58:48,295 WARN L246 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-13 21:58:48,295 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2025-03-13 21:58:48,336 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-13 21:58:48,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 341 places, 355 transitions, 750 flow [2025-03-13 21:58:48,378 INFO L124 PetriNetUnfolderBase]: 25/398 cut-off events. [2025-03-13 21:58:48,379 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2025-03-13 21:58:48,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 424 conditions, 398 events. 25/398 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1443 event pairs, 0 based on Foata normal form. 0/347 useless extension candidates. Maximal degree in co-relation 338. Up to 6 conditions per place. [2025-03-13 21:58:48,385 INFO L82 GeneralOperation]: Start removeDead. Operand has 341 places, 355 transitions, 750 flow [2025-03-13 21:58:48,388 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 341 places, 355 transitions, 750 flow [2025-03-13 21:58:48,389 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-13 21:58:48,390 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;@18f61952, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-13 21:58:48,390 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2025-03-13 21:58:48,402 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-13 21:58:48,403 INFO L124 PetriNetUnfolderBase]: 3/145 cut-off events. [2025-03-13 21:58:48,403 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2025-03-13 21:58:48,403 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:58:48,403 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] [2025-03-13 21:58:48,403 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2025-03-13 21:58:48,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:58:48,404 INFO L85 PathProgramCache]: Analyzing trace with hash 2023870900, now seen corresponding path program 1 times [2025-03-13 21:58:48,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:58:48,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30523404] [2025-03-13 21:58:48,405 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:58:48,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:58:48,415 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-03-13 21:58:48,422 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-03-13 21:58:48,423 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:58:48,423 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:58:48,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:58:48,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:58:48,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30523404] [2025-03-13 21:58:48,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30523404] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:58:48,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:58:48,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 21:58:48,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445861183] [2025-03-13 21:58:48,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:58:48,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-13 21:58:48,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:58:48,704 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-13 21:58:48,704 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-13 21:58:49,041 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 355 [2025-03-13 21:58:49,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 355 transitions, 750 flow. Second operand has 6 states, 6 states have (on average 308.6666666666667) internal successors, (1852), 6 states have internal predecessors, (1852), 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) [2025-03-13 21:58:49,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:58:49,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 355 [2025-03-13 21:58:49,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:58:53,138 INFO L124 PetriNetUnfolderBase]: 4694/23305 cut-off events. [2025-03-13 21:58:53,139 INFO L125 PetriNetUnfolderBase]: For 8329/8329 co-relation queries the response was YES. [2025-03-13 21:58:53,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31866 conditions, 23305 events. 4694/23305 cut-off events. For 8329/8329 co-relation queries the response was YES. Maximal size of possible extension queue 605. Compared 299758 event pairs, 1824 based on Foata normal form. 7265/27693 useless extension candidates. Maximal degree in co-relation 9584. Up to 2552 conditions per place. [2025-03-13 21:58:53,530 INFO L140 encePairwiseOnDemand]: 333/355 looper letters, 69 selfloop transitions, 5 changer transitions 0/373 dead transitions. [2025-03-13 21:58:53,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 373 transitions, 1062 flow [2025-03-13 21:58:53,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-13 21:58:53,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-13 21:58:53,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1985 transitions. [2025-03-13 21:58:53,536 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.931924882629108 [2025-03-13 21:58:53,536 INFO L175 Difference]: Start difference. First operand has 341 places, 355 transitions, 750 flow. Second operand 6 states and 1985 transitions. [2025-03-13 21:58:53,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 373 transitions, 1062 flow [2025-03-13 21:58:53,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 373 transitions, 1002 flow, removed 30 selfloop flow, removed 0 redundant places. [2025-03-13 21:58:53,553 INFO L231 Difference]: Finished difference. Result has 331 places, 325 transitions, 688 flow [2025-03-13 21:58:53,554 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=355, PETRI_DIFFERENCE_MINUEND_FLOW=678, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=688, PETRI_PLACES=331, PETRI_TRANSITIONS=325} [2025-03-13 21:58:53,555 INFO L279 CegarLoopForPetriNet]: 341 programPoint places, -10 predicate places. [2025-03-13 21:58:53,556 INFO L471 AbstractCegarLoop]: Abstraction has has 331 places, 325 transitions, 688 flow [2025-03-13 21:58:53,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 308.6666666666667) internal successors, (1852), 6 states have internal predecessors, (1852), 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) [2025-03-13 21:58:53,557 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:58:53,557 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:58:53,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-13 21:58:53,557 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2025-03-13 21:58:53,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:58:53,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1389203561, now seen corresponding path program 1 times [2025-03-13 21:58:53,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:58:53,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714046154] [2025-03-13 21:58:53,558 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:58:53,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:58:53,569 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-03-13 21:58:53,579 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-03-13 21:58:53,579 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:58:53,579 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-13 21:58:53,580 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-13 21:58:53,583 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-03-13 21:58:53,593 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-03-13 21:58:53,594 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:58:53,594 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-13 21:58:53,607 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-13 21:58:53,608 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-13 21:58:53,608 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2025-03-13 21:58:53,608 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (23 of 25 remaining) [2025-03-13 21:58:53,609 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (22 of 25 remaining) [2025-03-13 21:58:53,609 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (21 of 25 remaining) [2025-03-13 21:58:53,609 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 25 remaining) [2025-03-13 21:58:53,609 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (19 of 25 remaining) [2025-03-13 21:58:53,609 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 25 remaining) [2025-03-13 21:58:53,609 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (17 of 25 remaining) [2025-03-13 21:58:53,609 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (16 of 25 remaining) [2025-03-13 21:58:53,609 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (15 of 25 remaining) [2025-03-13 21:58:53,609 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 25 remaining) [2025-03-13 21:58:53,609 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 25 remaining) [2025-03-13 21:58:53,611 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 25 remaining) [2025-03-13 21:58:53,611 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 25 remaining) [2025-03-13 21:58:53,611 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 25 remaining) [2025-03-13 21:58:53,611 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 25 remaining) [2025-03-13 21:58:53,611 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 25 remaining) [2025-03-13 21:58:53,611 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 25 remaining) [2025-03-13 21:58:53,611 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 25 remaining) [2025-03-13 21:58:53,611 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 25 remaining) [2025-03-13 21:58:53,612 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 25 remaining) [2025-03-13 21:58:53,612 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 25 remaining) [2025-03-13 21:58:53,612 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 25 remaining) [2025-03-13 21:58:53,612 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 25 remaining) [2025-03-13 21:58:53,612 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 25 remaining) [2025-03-13 21:58:53,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-13 21:58:53,612 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-13 21:58:53,612 WARN L246 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-13 21:58:53,612 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2025-03-13 21:58:53,694 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-13 21:58:53,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 402 places, 419 transitions, 892 flow [2025-03-13 21:58:53,755 INFO L124 PetriNetUnfolderBase]: 30/471 cut-off events. [2025-03-13 21:58:53,756 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2025-03-13 21:58:53,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 505 conditions, 471 events. 30/471 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1866 event pairs, 0 based on Foata normal form. 0/410 useless extension candidates. Maximal degree in co-relation 417. Up to 7 conditions per place. [2025-03-13 21:58:53,766 INFO L82 GeneralOperation]: Start removeDead. Operand has 402 places, 419 transitions, 892 flow [2025-03-13 21:58:53,769 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 402 places, 419 transitions, 892 flow [2025-03-13 21:58:53,770 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-13 21:58:53,770 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@18f61952, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-13 21:58:53,770 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2025-03-13 21:58:53,779 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-13 21:58:53,779 INFO L124 PetriNetUnfolderBase]: 3/145 cut-off events. [2025-03-13 21:58:53,780 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2025-03-13 21:58:53,782 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:58:53,782 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] [2025-03-13 21:58:53,782 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2025-03-13 21:58:53,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:58:53,782 INFO L85 PathProgramCache]: Analyzing trace with hash 685941974, now seen corresponding path program 1 times [2025-03-13 21:58:53,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:58:53,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849337528] [2025-03-13 21:58:53,783 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:58:53,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:58:53,794 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-03-13 21:58:53,798 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-03-13 21:58:53,799 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:58:53,799 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:58:54,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:58:54,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:58:54,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849337528] [2025-03-13 21:58:54,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849337528] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:58:54,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:58:54,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 21:58:54,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197894073] [2025-03-13 21:58:54,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:58:54,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-13 21:58:54,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:58:54,015 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-13 21:58:54,015 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-13 21:58:54,308 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 364 out of 419 [2025-03-13 21:58:54,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 419 transitions, 892 flow. Second operand has 6 states, 6 states have (on average 365.6666666666667) internal successors, (2194), 6 states have internal predecessors, (2194), 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) [2025-03-13 21:58:54,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:58:54,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 364 of 419 [2025-03-13 21:58:54,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:59:07,824 INFO L124 PetriNetUnfolderBase]: 17249/73363 cut-off events. [2025-03-13 21:59:07,824 INFO L125 PetriNetUnfolderBase]: For 36112/36112 co-relation queries the response was YES. [2025-03-13 21:59:09,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103795 conditions, 73363 events. 17249/73363 cut-off events. For 36112/36112 co-relation queries the response was YES. Maximal size of possible extension queue 1682. Compared 1084397 event pairs, 6927 based on Foata normal form. 26516/91158 useless extension candidates. Maximal degree in co-relation 31697. Up to 9113 conditions per place. [2025-03-13 21:59:10,454 INFO L140 encePairwiseOnDemand]: 394/419 looper letters, 84 selfloop transitions, 5 changer transitions 0/444 dead transitions. [2025-03-13 21:59:10,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 444 transitions, 1300 flow [2025-03-13 21:59:10,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-13 21:59:10,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-13 21:59:10,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2357 transitions. [2025-03-13 21:59:10,459 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.9375497215592681 [2025-03-13 21:59:10,459 INFO L175 Difference]: Start difference. First operand has 402 places, 419 transitions, 892 flow. Second operand 6 states and 2357 transitions. [2025-03-13 21:59:10,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 444 transitions, 1300 flow [2025-03-13 21:59:10,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 444 transitions, 1200 flow, removed 50 selfloop flow, removed 0 redundant places. [2025-03-13 21:59:10,481 INFO L231 Difference]: Finished difference. Result has 390 places, 384 transitions, 812 flow [2025-03-13 21:59:10,481 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=419, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=812, PETRI_PLACES=390, PETRI_TRANSITIONS=384} [2025-03-13 21:59:10,482 INFO L279 CegarLoopForPetriNet]: 402 programPoint places, -12 predicate places. [2025-03-13 21:59:10,482 INFO L471 AbstractCegarLoop]: Abstraction has has 390 places, 384 transitions, 812 flow [2025-03-13 21:59:10,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 365.6666666666667) internal successors, (2194), 6 states have internal predecessors, (2194), 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) [2025-03-13 21:59:10,483 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:59:10,484 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:59:10,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-13 21:59:10,484 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2025-03-13 21:59:10,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:59:10,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1140311528, now seen corresponding path program 1 times [2025-03-13 21:59:10,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:59:10,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521377147] [2025-03-13 21:59:10,485 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:59:10,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:59:10,492 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-03-13 21:59:10,496 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-03-13 21:59:10,497 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:59:10,497 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:59:10,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:59:10,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:59:10,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521377147] [2025-03-13 21:59:10,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521377147] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:59:10,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:59:10,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 21:59:10,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537024395] [2025-03-13 21:59:10,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:59:10,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-13 21:59:10,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:59:10,699 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-13 21:59:10,699 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-13 21:59:11,011 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 364 out of 419 [2025-03-13 21:59:11,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 384 transitions, 812 flow. Second operand has 6 states, 6 states have (on average 365.8333333333333) internal successors, (2195), 6 states have internal predecessors, (2195), 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) [2025-03-13 21:59:11,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:59:11,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 364 of 419 [2025-03-13 21:59:11,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand