./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/pthread-ext/46_monabsex2_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version c00e63dc 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-ext/46_monabsex2_vs.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 134e9604c8f91a200c8250c9fbb45867ed525dc78e65c16e0a5fa44f5d71ac67 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 09:01:33,402 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 09:01:33,453 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2025-02-06 09:01:33,458 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 09:01:33,460 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 09:01:33,479 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 09:01:33,480 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 09:01:33,480 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 09:01:33,480 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 09:01:33,481 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 09:01:33,481 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 09:01:33,482 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 09:01:33,482 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 09:01:33,482 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 09:01:33,482 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 09:01:33,482 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 09:01:33,482 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 09:01:33,482 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 09:01:33,482 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 09:01:33,482 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 09:01:33,482 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 09:01:33,482 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 09:01:33,482 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2025-02-06 09:01:33,482 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 09:01:33,482 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 09:01:33,482 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 09:01:33,482 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 09:01:33,482 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 09:01:33,482 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 09:01:33,482 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 09:01:33,482 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 09:01:33,482 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 09:01:33,483 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 09:01:33,483 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 09:01:33,483 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 09:01:33,483 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 09:01:33,483 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 09:01:33,483 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 09:01:33,483 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 09:01:33,483 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 09:01:33,483 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 09:01:33,483 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 09:01:33,483 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 -> 134e9604c8f91a200c8250c9fbb45867ed525dc78e65c16e0a5fa44f5d71ac67 [2025-02-06 09:01:33,741 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 09:01:33,749 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 09:01:33,751 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 09:01:33,752 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 09:01:33,752 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 09:01:33,753 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/46_monabsex2_vs.i [2025-02-06 09:01:34,950 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9ce4ca06d/4964f7ee49b04600bb83e93735b468a7/FLAG7121a227a [2025-02-06 09:01:35,251 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 09:01:35,251 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-ext/46_monabsex2_vs.i [2025-02-06 09:01:35,264 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9ce4ca06d/4964f7ee49b04600bb83e93735b468a7/FLAG7121a227a [2025-02-06 09:01:35,547 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9ce4ca06d/4964f7ee49b04600bb83e93735b468a7 [2025-02-06 09:01:35,550 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 09:01:35,552 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 09:01:35,554 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 09:01:35,554 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 09:01:35,559 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 09:01:35,560 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 09:01:35" (1/1) ... [2025-02-06 09:01:35,562 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13fc2296 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 09:01:35, skipping insertion in model container [2025-02-06 09:01:35,562 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 09:01:35" (1/1) ... [2025-02-06 09:01:35,593 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 09:01:35,858 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 09:01:35,866 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 09:01:35,897 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 09:01:35,921 INFO L204 MainTranslator]: Completed translation [2025-02-06 09:01:35,922 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 09:01:35 WrapperNode [2025-02-06 09:01:35,922 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 09:01:35,923 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 09:01:35,923 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 09:01:35,923 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 09:01:35,927 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 09:01:35" (1/1) ... [2025-02-06 09:01:35,935 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 09:01:35" (1/1) ... [2025-02-06 09:01:35,947 INFO L138 Inliner]: procedures = 168, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 52 [2025-02-06 09:01:35,949 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 09:01:35,950 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 09:01:35,950 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 09:01:35,950 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 09:01:35,955 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 09:01:35" (1/1) ... [2025-02-06 09:01:35,955 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 09:01:35" (1/1) ... [2025-02-06 09:01:35,957 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 09:01:35" (1/1) ... [2025-02-06 09:01:35,957 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 09:01:35" (1/1) ... [2025-02-06 09:01:35,960 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 09:01:35" (1/1) ... [2025-02-06 09:01:35,960 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 09:01:35" (1/1) ... [2025-02-06 09:01:35,961 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 09:01:35" (1/1) ... [2025-02-06 09:01:35,962 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 09:01:35" (1/1) ... [2025-02-06 09:01:35,965 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 09:01:35,966 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 09:01:35,966 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 09:01:35,966 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 09:01:35,968 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 09:01:35" (1/1) ... [2025-02-06 09:01:35,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 09:01:35,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 09:01:35,993 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) [2025-02-06 09:01:35,995 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 [2025-02-06 09:01:36,010 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-02-06 09:01:36,011 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-02-06 09:01:36,011 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-06 09:01:36,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 09:01:36,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-02-06 09:01:36,011 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-06 09:01:36,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 09:01:36,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 09:01:36,012 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 09:01:36,107 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 09:01:36,109 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 09:01:36,203 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 09:01:36,204 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 09:01:36,246 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 09:01:36,247 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 09:01:36,247 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 09:01:36 BoogieIcfgContainer [2025-02-06 09:01:36,247 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 09:01:36,249 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 09:01:36,249 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 09:01:36,252 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 09:01:36,252 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 09:01:35" (1/3) ... [2025-02-06 09:01:36,253 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@be3d29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 09:01:36, skipping insertion in model container [2025-02-06 09:01:36,253 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 09:01:35" (2/3) ... [2025-02-06 09:01:36,254 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@be3d29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 09:01:36, skipping insertion in model container [2025-02-06 09:01:36,254 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 09:01:36" (3/3) ... [2025-02-06 09:01:36,255 INFO L128 eAbstractionObserver]: Analyzing ICFG 46_monabsex2_vs.i [2025-02-06 09:01:36,266 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 09:01:36,268 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 46_monabsex2_vs.i that has 2 procedures, 31 locations, 1 initial locations, 1 loop locations, and 5 error locations. [2025-02-06 09:01:36,268 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 09:01:36,295 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 09:01:36,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 31 transitions, 66 flow [2025-02-06 09:01:36,346 INFO L124 PetriNetUnfolderBase]: 0/38 cut-off events. [2025-02-06 09:01:36,347 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 09:01:36,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 38 events. 0/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 56 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2025-02-06 09:01:36,351 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 31 transitions, 66 flow [2025-02-06 09:01:36,354 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 31 transitions, 66 flow [2025-02-06 09:01:36,361 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 09:01:36,368 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;@656062d2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 09:01:36,368 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2025-02-06 09:01:36,381 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 09:01:36,381 INFO L124 PetriNetUnfolderBase]: 0/24 cut-off events. [2025-02-06 09:01:36,381 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 09:01:36,381 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 09:01:36,382 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 09:01:36,382 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err4ASSERT_VIOLATIONDATA_RACE === [thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2025-02-06 09:01:36,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 09:01:36,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1133374889, now seen corresponding path program 1 times [2025-02-06 09:01:36,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 09:01:36,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698716159] [2025-02-06 09:01:36,393 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 09:01:36,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 09:01:36,467 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 09:01:36,481 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 09:01:36,481 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 09:01:36,481 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 09:01:36,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 09:01:36,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 09:01:36,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698716159] [2025-02-06 09:01:36,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698716159] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 09:01:36,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 09:01:36,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 09:01:36,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065343255] [2025-02-06 09:01:36,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 09:01:36,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-06 09:01:36,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 09:01:36,568 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-06 09:01:36,568 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 09:01:36,569 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 31 [2025-02-06 09:01:36,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 31 transitions, 66 flow. Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 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) [2025-02-06 09:01:36,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 09:01:36,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 31 [2025-02-06 09:01:36,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 09:01:36,604 INFO L124 PetriNetUnfolderBase]: 0/25 cut-off events. [2025-02-06 09:01:36,604 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-06 09:01:36,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 25 events. 0/25 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 7 event pairs, 0 based on Foata normal form. 5/30 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2025-02-06 09:01:36,606 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 4 selfloop transitions, 0 changer transitions 0/22 dead transitions. [2025-02-06 09:01:36,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 22 transitions, 56 flow [2025-02-06 09:01:36,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-06 09:01:36,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-02-06 09:01:36,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 52 transitions. [2025-02-06 09:01:36,616 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8387096774193549 [2025-02-06 09:01:36,617 INFO L175 Difference]: Start difference. First operand has 34 places, 31 transitions, 66 flow. Second operand 2 states and 52 transitions. [2025-02-06 09:01:36,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 22 transitions, 56 flow [2025-02-06 09:01:36,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 22 transitions, 56 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 09:01:36,624 INFO L231 Difference]: Finished difference. Result has 26 places, 22 transitions, 48 flow [2025-02-06 09:01:36,626 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=48, PETRI_PLACES=26, PETRI_TRANSITIONS=22} [2025-02-06 09:01:36,630 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, -8 predicate places. [2025-02-06 09:01:36,630 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 22 transitions, 48 flow [2025-02-06 09:01:36,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 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) [2025-02-06 09:01:36,630 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 09:01:36,630 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 09:01:36,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 09:01:36,631 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2025-02-06 09:01:36,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 09:01:36,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1748834258, now seen corresponding path program 1 times [2025-02-06 09:01:36,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 09:01:36,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888823029] [2025-02-06 09:01:36,631 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 09:01:36,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 09:01:36,645 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 09:01:36,657 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 09:01:36,657 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 09:01:36,657 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 09:01:36,657 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 09:01:36,660 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 09:01:36,670 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 09:01:36,670 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 09:01:36,670 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 09:01:36,691 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 09:01:36,692 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-06 09:01:36,693 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2025-02-06 09:01:36,697 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2025-02-06 09:01:36,697 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2025-02-06 09:01:36,697 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2025-02-06 09:01:36,697 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2025-02-06 09:01:36,697 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining) [2025-02-06 09:01:36,697 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining) [2025-02-06 09:01:36,697 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 11 remaining) [2025-02-06 09:01:36,697 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2025-02-06 09:01:36,697 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2025-02-06 09:01:36,697 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining) [2025-02-06 09:01:36,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 09:01:36,698 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-02-06 09:01:36,701 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-06 09:01:36,701 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-02-06 09:01:36,722 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 09:01:36,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 43 transitions, 96 flow [2025-02-06 09:01:36,740 INFO L124 PetriNetUnfolderBase]: 0/57 cut-off events. [2025-02-06 09:01:36,742 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-06 09:01:36,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 57 events. 0/57 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 121 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2025-02-06 09:01:36,742 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 43 transitions, 96 flow [2025-02-06 09:01:36,743 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 43 transitions, 96 flow [2025-02-06 09:01:36,745 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 09:01:36,746 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;@656062d2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 09:01:36,746 INFO L334 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2025-02-06 09:01:36,754 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 09:01:36,754 INFO L124 PetriNetUnfolderBase]: 0/22 cut-off events. [2025-02-06 09:01:36,755 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 09:01:36,755 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 09:01:36,755 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 09:01:36,755 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err4ASSERT_VIOLATIONDATA_RACE === [thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2025-02-06 09:01:36,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 09:01:36,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1441075841, now seen corresponding path program 1 times [2025-02-06 09:01:36,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 09:01:36,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144805835] [2025-02-06 09:01:36,757 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 09:01:36,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 09:01:36,770 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 09:01:36,772 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 09:01:36,772 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 09:01:36,772 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 09:01:36,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 09:01:36,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 09:01:36,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144805835] [2025-02-06 09:01:36,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144805835] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 09:01:36,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 09:01:36,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 09:01:36,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297992566] [2025-02-06 09:01:36,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 09:01:36,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-06 09:01:36,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 09:01:36,802 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-06 09:01:36,803 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 09:01:36,804 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 43 [2025-02-06 09:01:36,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 43 transitions, 96 flow. Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 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) [2025-02-06 09:01:36,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 09:01:36,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 43 [2025-02-06 09:01:36,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 09:01:36,840 INFO L124 PetriNetUnfolderBase]: 12/69 cut-off events. [2025-02-06 09:01:36,840 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2025-02-06 09:01:36,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 69 events. 12/69 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 159 event pairs, 12 based on Foata normal form. 21/89 useless extension candidates. Maximal degree in co-relation 65. Up to 33 conditions per place. [2025-02-06 09:01:36,842 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 8 selfloop transitions, 0 changer transitions 0/29 dead transitions. [2025-02-06 09:01:36,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 84 flow [2025-02-06 09:01:36,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-06 09:01:36,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-02-06 09:01:36,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 67 transitions. [2025-02-06 09:01:36,843 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7790697674418605 [2025-02-06 09:01:36,843 INFO L175 Difference]: Start difference. First operand has 48 places, 43 transitions, 96 flow. Second operand 2 states and 67 transitions. [2025-02-06 09:01:36,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 84 flow [2025-02-06 09:01:36,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 29 transitions, 84 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 09:01:36,844 INFO L231 Difference]: Finished difference. Result has 35 places, 29 transitions, 68 flow [2025-02-06 09:01:36,844 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=68, PETRI_PLACES=35, PETRI_TRANSITIONS=29} [2025-02-06 09:01:36,845 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, -13 predicate places. [2025-02-06 09:01:36,845 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 68 flow [2025-02-06 09:01:36,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 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) [2025-02-06 09:01:36,845 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 09:01:36,845 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 09:01:36,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 09:01:36,845 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2025-02-06 09:01:36,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 09:01:36,846 INFO L85 PathProgramCache]: Analyzing trace with hash 432801090, now seen corresponding path program 1 times [2025-02-06 09:01:36,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 09:01:36,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057923436] [2025-02-06 09:01:36,846 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 09:01:36,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 09:01:36,853 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-06 09:01:36,856 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 09:01:36,857 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 09:01:36,857 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 09:01:36,857 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 09:01:36,860 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-06 09:01:36,866 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 09:01:36,866 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 09:01:36,866 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 09:01:36,869 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 09:01:36,869 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-06 09:01:36,869 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 16 remaining) [2025-02-06 09:01:36,869 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (14 of 16 remaining) [2025-02-06 09:01:36,869 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (13 of 16 remaining) [2025-02-06 09:01:36,870 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 16 remaining) [2025-02-06 09:01:36,870 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 16 remaining) [2025-02-06 09:01:36,870 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 16 remaining) [2025-02-06 09:01:36,870 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 16 remaining) [2025-02-06 09:01:36,870 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 16 remaining) [2025-02-06 09:01:36,870 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 16 remaining) [2025-02-06 09:01:36,870 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 16 remaining) [2025-02-06 09:01:36,870 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 16 remaining) [2025-02-06 09:01:36,870 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (4 of 16 remaining) [2025-02-06 09:01:36,870 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 16 remaining) [2025-02-06 09:01:36,870 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 16 remaining) [2025-02-06 09:01:36,870 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 16 remaining) [2025-02-06 09:01:36,870 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 16 remaining) [2025-02-06 09:01:36,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 09:01:36,870 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-02-06 09:01:36,871 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-06 09:01:36,871 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-02-06 09:01:36,889 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 09:01:36,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 55 transitions, 128 flow [2025-02-06 09:01:36,907 INFO L124 PetriNetUnfolderBase]: 0/76 cut-off events. [2025-02-06 09:01:36,909 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-02-06 09:01:36,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 0/76 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 198 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2025-02-06 09:01:36,910 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 55 transitions, 128 flow [2025-02-06 09:01:36,911 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 55 transitions, 128 flow [2025-02-06 09:01:36,912 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 09:01:36,913 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;@656062d2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 09:01:36,913 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2025-02-06 09:01:36,916 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 09:01:36,919 INFO L124 PetriNetUnfolderBase]: 0/24 cut-off events. [2025-02-06 09:01:36,919 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 09:01:36,919 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 09:01:36,919 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 09:01:36,920 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err4ASSERT_VIOLATIONDATA_RACE === [thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2025-02-06 09:01:36,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 09:01:36,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1837375487, now seen corresponding path program 1 times [2025-02-06 09:01:36,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 09:01:36,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009480217] [2025-02-06 09:01:36,921 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 09:01:36,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 09:01:36,931 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 09:01:36,934 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 09:01:36,935 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 09:01:36,936 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 09:01:36,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 09:01:36,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 09:01:36,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009480217] [2025-02-06 09:01:36,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009480217] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 09:01:36,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 09:01:36,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 09:01:36,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648904873] [2025-02-06 09:01:36,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 09:01:36,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-06 09:01:36,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 09:01:36,952 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-06 09:01:36,952 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 09:01:36,953 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 55 [2025-02-06 09:01:36,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 55 transitions, 128 flow. Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 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) [2025-02-06 09:01:36,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 09:01:36,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 55 [2025-02-06 09:01:36,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 09:01:37,049 INFO L124 PetriNetUnfolderBase]: 108/285 cut-off events. [2025-02-06 09:01:37,049 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2025-02-06 09:01:37,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 560 conditions, 285 events. 108/285 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1322 event pairs, 108 based on Foata normal form. 85/367 useless extension candidates. Maximal degree in co-relation 346. Up to 193 conditions per place. [2025-02-06 09:01:37,053 INFO L140 encePairwiseOnDemand]: 39/55 looper letters, 12 selfloop transitions, 0 changer transitions 0/36 dead transitions. [2025-02-06 09:01:37,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 36 transitions, 114 flow [2025-02-06 09:01:37,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-06 09:01:37,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-02-06 09:01:37,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 82 transitions. [2025-02-06 09:01:37,056 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7454545454545455 [2025-02-06 09:01:37,056 INFO L175 Difference]: Start difference. First operand has 62 places, 55 transitions, 128 flow. Second operand 2 states and 82 transitions. [2025-02-06 09:01:37,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 36 transitions, 114 flow [2025-02-06 09:01:37,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 36 transitions, 112 flow, removed 1 selfloop flow, removed 0 redundant places. [2025-02-06 09:01:37,058 INFO L231 Difference]: Finished difference. Result has 44 places, 36 transitions, 88 flow [2025-02-06 09:01:37,059 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=88, PETRI_PLACES=44, PETRI_TRANSITIONS=36} [2025-02-06 09:01:37,059 INFO L279 CegarLoopForPetriNet]: 62 programPoint places, -18 predicate places. [2025-02-06 09:01:37,059 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 36 transitions, 88 flow [2025-02-06 09:01:37,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 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) [2025-02-06 09:01:37,059 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 09:01:37,059 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 09:01:37,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 09:01:37,060 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2025-02-06 09:01:37,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 09:01:37,060 INFO L85 PathProgramCache]: Analyzing trace with hash 565074937, now seen corresponding path program 1 times [2025-02-06 09:01:37,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 09:01:37,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624065681] [2025-02-06 09:01:37,060 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 09:01:37,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 09:01:37,068 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-06 09:01:37,074 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-06 09:01:37,078 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 09:01:37,078 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 09:01:37,078 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 09:01:37,081 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-06 09:01:37,088 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-06 09:01:37,088 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 09:01:37,088 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 09:01:37,093 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 09:01:37,093 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-06 09:01:37,093 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2025-02-06 09:01:37,093 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (19 of 21 remaining) [2025-02-06 09:01:37,093 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (18 of 21 remaining) [2025-02-06 09:01:37,093 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 21 remaining) [2025-02-06 09:01:37,093 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (16 of 21 remaining) [2025-02-06 09:01:37,093 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 21 remaining) [2025-02-06 09:01:37,093 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (14 of 21 remaining) [2025-02-06 09:01:37,093 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (13 of 21 remaining) [2025-02-06 09:01:37,093 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 21 remaining) [2025-02-06 09:01:37,093 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 21 remaining) [2025-02-06 09:01:37,093 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 21 remaining) [2025-02-06 09:01:37,093 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 21 remaining) [2025-02-06 09:01:37,093 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 21 remaining) [2025-02-06 09:01:37,094 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 21 remaining) [2025-02-06 09:01:37,094 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 21 remaining) [2025-02-06 09:01:37,094 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 21 remaining) [2025-02-06 09:01:37,094 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (4 of 21 remaining) [2025-02-06 09:01:37,094 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 21 remaining) [2025-02-06 09:01:37,094 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 21 remaining) [2025-02-06 09:01:37,094 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 21 remaining) [2025-02-06 09:01:37,094 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 21 remaining) [2025-02-06 09:01:37,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 09:01:37,094 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-02-06 09:01:37,095 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-06 09:01:37,095 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2025-02-06 09:01:37,125 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 09:01:37,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 67 transitions, 162 flow [2025-02-06 09:01:37,142 INFO L124 PetriNetUnfolderBase]: 0/95 cut-off events. [2025-02-06 09:01:37,142 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-02-06 09:01:37,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 95 events. 0/95 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 259 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2025-02-06 09:01:37,143 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 67 transitions, 162 flow [2025-02-06 09:01:37,143 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 67 transitions, 162 flow [2025-02-06 09:01:37,144 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 09:01:37,144 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;@656062d2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 09:01:37,145 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2025-02-06 09:01:37,146 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 09:01:37,146 INFO L124 PetriNetUnfolderBase]: 0/22 cut-off events. [2025-02-06 09:01:37,146 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 09:01:37,146 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 09:01:37,147 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 09:01:37,147 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err4ASSERT_VIOLATIONDATA_RACE === [thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2025-02-06 09:01:37,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 09:01:37,148 INFO L85 PathProgramCache]: Analyzing trace with hash -55523345, now seen corresponding path program 1 times [2025-02-06 09:01:37,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 09:01:37,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325350886] [2025-02-06 09:01:37,149 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 09:01:37,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 09:01:37,158 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 09:01:37,161 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 09:01:37,161 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 09:01:37,161 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 09:01:37,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 09:01:37,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 09:01:37,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325350886] [2025-02-06 09:01:37,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325350886] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 09:01:37,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 09:01:37,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 09:01:37,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512142520] [2025-02-06 09:01:37,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 09:01:37,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-06 09:01:37,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 09:01:37,169 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-06 09:01:37,169 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 09:01:37,170 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 67 [2025-02-06 09:01:37,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 67 transitions, 162 flow. Second operand has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 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) [2025-02-06 09:01:37,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 09:01:37,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 67 [2025-02-06 09:01:37,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 09:01:37,386 INFO L124 PetriNetUnfolderBase]: 684/1333 cut-off events. [2025-02-06 09:01:37,386 INFO L125 PetriNetUnfolderBase]: For 755/755 co-relation queries the response was YES. [2025-02-06 09:01:37,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2761 conditions, 1333 events. 684/1333 cut-off events. For 755/755 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 8136 event pairs, 684 based on Foata normal form. 341/1668 useless extension candidates. Maximal degree in co-relation 1755. Up to 1025 conditions per place. [2025-02-06 09:01:37,400 INFO L140 encePairwiseOnDemand]: 46/67 looper letters, 16 selfloop transitions, 0 changer transitions 0/43 dead transitions. [2025-02-06 09:01:37,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 43 transitions, 146 flow [2025-02-06 09:01:37,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-06 09:01:37,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-02-06 09:01:37,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 97 transitions. [2025-02-06 09:01:37,403 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7238805970149254 [2025-02-06 09:01:37,403 INFO L175 Difference]: Start difference. First operand has 76 places, 67 transitions, 162 flow. Second operand 2 states and 97 transitions. [2025-02-06 09:01:37,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 43 transitions, 146 flow [2025-02-06 09:01:37,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 43 transitions, 140 flow, removed 3 selfloop flow, removed 0 redundant places. [2025-02-06 09:01:37,406 INFO L231 Difference]: Finished difference. Result has 53 places, 43 transitions, 108 flow [2025-02-06 09:01:37,407 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=108, PETRI_PLACES=53, PETRI_TRANSITIONS=43} [2025-02-06 09:01:37,407 INFO L279 CegarLoopForPetriNet]: 76 programPoint places, -23 predicate places. [2025-02-06 09:01:37,407 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 43 transitions, 108 flow [2025-02-06 09:01:37,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 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) [2025-02-06 09:01:37,408 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 09:01:37,408 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 09:01:37,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 09:01:37,409 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2025-02-06 09:01:37,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 09:01:37,409 INFO L85 PathProgramCache]: Analyzing trace with hash -2096389549, now seen corresponding path program 1 times [2025-02-06 09:01:37,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 09:01:37,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830183445] [2025-02-06 09:01:37,410 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 09:01:37,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 09:01:37,420 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-06 09:01:37,425 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-06 09:01:37,425 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 09:01:37,425 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 09:01:37,426 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 09:01:37,432 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-06 09:01:37,441 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-06 09:01:37,445 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 09:01:37,446 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 09:01:37,453 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 09:01:37,454 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-06 09:01:37,454 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 26 remaining) [2025-02-06 09:01:37,454 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (24 of 26 remaining) [2025-02-06 09:01:37,454 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (23 of 26 remaining) [2025-02-06 09:01:37,454 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (22 of 26 remaining) [2025-02-06 09:01:37,454 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (21 of 26 remaining) [2025-02-06 09:01:37,455 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 26 remaining) [2025-02-06 09:01:37,455 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (19 of 26 remaining) [2025-02-06 09:01:37,455 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (18 of 26 remaining) [2025-02-06 09:01:37,455 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 26 remaining) [2025-02-06 09:01:37,455 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (16 of 26 remaining) [2025-02-06 09:01:37,455 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 26 remaining) [2025-02-06 09:01:37,455 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (14 of 26 remaining) [2025-02-06 09:01:37,455 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (13 of 26 remaining) [2025-02-06 09:01:37,455 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 26 remaining) [2025-02-06 09:01:37,455 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 26 remaining) [2025-02-06 09:01:37,456 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 26 remaining) [2025-02-06 09:01:37,456 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 26 remaining) [2025-02-06 09:01:37,456 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 26 remaining) [2025-02-06 09:01:37,456 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 26 remaining) [2025-02-06 09:01:37,456 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 26 remaining) [2025-02-06 09:01:37,456 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 26 remaining) [2025-02-06 09:01:37,456 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (4 of 26 remaining) [2025-02-06 09:01:37,456 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 26 remaining) [2025-02-06 09:01:37,456 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 26 remaining) [2025-02-06 09:01:37,456 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 26 remaining) [2025-02-06 09:01:37,456 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 26 remaining) [2025-02-06 09:01:37,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-06 09:01:37,457 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-02-06 09:01:37,457 WARN L246 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-06 09:01:37,457 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2025-02-06 09:01:37,489 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 09:01:37,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 79 transitions, 198 flow [2025-02-06 09:01:37,502 INFO L124 PetriNetUnfolderBase]: 0/114 cut-off events. [2025-02-06 09:01:37,502 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2025-02-06 09:01:37,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 114 events. 0/114 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 315 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2025-02-06 09:01:37,503 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 79 transitions, 198 flow [2025-02-06 09:01:37,504 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 79 transitions, 198 flow [2025-02-06 09:01:37,505 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 09:01:37,506 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;@656062d2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 09:01:37,506 INFO L334 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2025-02-06 09:01:37,508 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 09:01:37,511 INFO L124 PetriNetUnfolderBase]: 0/24 cut-off events. [2025-02-06 09:01:37,511 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 09:01:37,511 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 09:01:37,511 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 09:01:37,511 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err4ASSERT_VIOLATIONDATA_RACE === [thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2025-02-06 09:01:37,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 09:01:37,511 INFO L85 PathProgramCache]: Analyzing trace with hash -390487767, now seen corresponding path program 1 times [2025-02-06 09:01:37,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 09:01:37,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127095110] [2025-02-06 09:01:37,511 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 09:01:37,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 09:01:37,519 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 09:01:37,521 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 09:01:37,521 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 09:01:37,521 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 09:01:37,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 09:01:37,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 09:01:37,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127095110] [2025-02-06 09:01:37,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127095110] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 09:01:37,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 09:01:37,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 09:01:37,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216931314] [2025-02-06 09:01:37,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 09:01:37,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-06 09:01:37,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 09:01:37,529 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-06 09:01:37,529 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 09:01:37,529 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 79 [2025-02-06 09:01:37,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 79 transitions, 198 flow. Second operand has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 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) [2025-02-06 09:01:37,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 09:01:37,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 79 [2025-02-06 09:01:37,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 09:01:38,082 INFO L124 PetriNetUnfolderBase]: 3756/6285 cut-off events. [2025-02-06 09:01:38,083 INFO L125 PetriNetUnfolderBase]: For 4599/4599 co-relation queries the response was YES. [2025-02-06 09:01:38,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13346 conditions, 6285 events. 3756/6285 cut-off events. For 4599/4599 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 43508 event pairs, 3756 based on Foata normal form. 1365/7640 useless extension candidates. Maximal degree in co-relation 8540. Up to 5121 conditions per place. [2025-02-06 09:01:38,134 INFO L140 encePairwiseOnDemand]: 53/79 looper letters, 20 selfloop transitions, 0 changer transitions 0/50 dead transitions. [2025-02-06 09:01:38,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 50 transitions, 180 flow [2025-02-06 09:01:38,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-06 09:01:38,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-02-06 09:01:38,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 112 transitions. [2025-02-06 09:01:38,136 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7088607594936709 [2025-02-06 09:01:38,136 INFO L175 Difference]: Start difference. First operand has 90 places, 79 transitions, 198 flow. Second operand 2 states and 112 transitions. [2025-02-06 09:01:38,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 50 transitions, 180 flow [2025-02-06 09:01:38,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 50 transitions, 168 flow, removed 6 selfloop flow, removed 0 redundant places. [2025-02-06 09:01:38,138 INFO L231 Difference]: Finished difference. Result has 62 places, 50 transitions, 128 flow [2025-02-06 09:01:38,138 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=128, PETRI_PLACES=62, PETRI_TRANSITIONS=50} [2025-02-06 09:01:38,141 INFO L279 CegarLoopForPetriNet]: 90 programPoint places, -28 predicate places. [2025-02-06 09:01:38,141 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 50 transitions, 128 flow [2025-02-06 09:01:38,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 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) [2025-02-06 09:01:38,142 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 09:01:38,142 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 09:01:38,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-06 09:01:38,142 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2025-02-06 09:01:38,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 09:01:38,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1796329040, now seen corresponding path program 1 times [2025-02-06 09:01:38,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 09:01:38,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909705584] [2025-02-06 09:01:38,143 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 09:01:38,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 09:01:38,152 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-06 09:01:38,159 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 09:01:38,160 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 09:01:38,160 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 09:01:38,160 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 09:01:38,162 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-06 09:01:38,167 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 09:01:38,167 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 09:01:38,167 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 09:01:38,171 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 09:01:38,172 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-06 09:01:38,172 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2025-02-06 09:01:38,172 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (29 of 31 remaining) [2025-02-06 09:01:38,172 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (28 of 31 remaining) [2025-02-06 09:01:38,172 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (27 of 31 remaining) [2025-02-06 09:01:38,172 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (26 of 31 remaining) [2025-02-06 09:01:38,172 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (25 of 31 remaining) [2025-02-06 09:01:38,172 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (24 of 31 remaining) [2025-02-06 09:01:38,172 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (23 of 31 remaining) [2025-02-06 09:01:38,173 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (22 of 31 remaining) [2025-02-06 09:01:38,173 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (21 of 31 remaining) [2025-02-06 09:01:38,173 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 31 remaining) [2025-02-06 09:01:38,173 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (19 of 31 remaining) [2025-02-06 09:01:38,173 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (18 of 31 remaining) [2025-02-06 09:01:38,173 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 31 remaining) [2025-02-06 09:01:38,173 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (16 of 31 remaining) [2025-02-06 09:01:38,173 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 31 remaining) [2025-02-06 09:01:38,173 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (14 of 31 remaining) [2025-02-06 09:01:38,173 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (13 of 31 remaining) [2025-02-06 09:01:38,173 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 31 remaining) [2025-02-06 09:01:38,173 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 31 remaining) [2025-02-06 09:01:38,174 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 31 remaining) [2025-02-06 09:01:38,174 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 31 remaining) [2025-02-06 09:01:38,174 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 31 remaining) [2025-02-06 09:01:38,174 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 31 remaining) [2025-02-06 09:01:38,174 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 31 remaining) [2025-02-06 09:01:38,174 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 31 remaining) [2025-02-06 09:01:38,174 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (4 of 31 remaining) [2025-02-06 09:01:38,174 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 31 remaining) [2025-02-06 09:01:38,174 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 31 remaining) [2025-02-06 09:01:38,174 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 31 remaining) [2025-02-06 09:01:38,174 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 31 remaining) [2025-02-06 09:01:38,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-06 09:01:38,175 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-02-06 09:01:38,175 WARN L246 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-06 09:01:38,175 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2025-02-06 09:01:38,208 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 09:01:38,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 91 transitions, 236 flow [2025-02-06 09:01:38,224 INFO L124 PetriNetUnfolderBase]: 0/133 cut-off events. [2025-02-06 09:01:38,224 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2025-02-06 09:01:38,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 133 events. 0/133 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 387 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2025-02-06 09:01:38,224 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 91 transitions, 236 flow [2025-02-06 09:01:38,225 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 91 transitions, 236 flow [2025-02-06 09:01:38,226 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 09:01:38,227 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;@656062d2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 09:01:38,227 INFO L334 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2025-02-06 09:01:38,228 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 09:01:38,228 INFO L124 PetriNetUnfolderBase]: 0/24 cut-off events. [2025-02-06 09:01:38,228 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 09:01:38,228 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 09:01:38,229 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 09:01:38,229 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err4ASSERT_VIOLATIONDATA_RACE === [thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2025-02-06 09:01:38,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 09:01:38,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1452699599, now seen corresponding path program 1 times [2025-02-06 09:01:38,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 09:01:38,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767533510] [2025-02-06 09:01:38,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 09:01:38,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 09:01:38,234 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 09:01:38,235 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 09:01:38,235 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 09:01:38,235 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 09:01:38,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 09:01:38,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 09:01:38,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767533510] [2025-02-06 09:01:38,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767533510] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 09:01:38,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 09:01:38,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 09:01:38,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740947890] [2025-02-06 09:01:38,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 09:01:38,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-06 09:01:38,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 09:01:38,241 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-06 09:01:38,241 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 09:01:38,242 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 91 [2025-02-06 09:01:38,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 91 transitions, 236 flow. Second operand has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 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) [2025-02-06 09:01:38,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 09:01:38,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 91 [2025-02-06 09:01:38,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 09:01:40,440 INFO L124 PetriNetUnfolderBase]: 19116/29157 cut-off events. [2025-02-06 09:01:40,441 INFO L125 PetriNetUnfolderBase]: For 26108/26108 co-relation queries the response was YES. [2025-02-06 09:01:40,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62843 conditions, 29157 events. 19116/29157 cut-off events. For 26108/26108 co-relation queries the response was YES. Maximal size of possible extension queue 1328. Compared 218212 event pairs, 19116 based on Foata normal form. 5461/34603 useless extension candidates. Maximal degree in co-relation 40285. Up to 24577 conditions per place. [2025-02-06 09:01:40,865 INFO L140 encePairwiseOnDemand]: 60/91 looper letters, 24 selfloop transitions, 0 changer transitions 0/57 dead transitions. [2025-02-06 09:01:40,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 57 transitions, 216 flow [2025-02-06 09:01:40,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-06 09:01:40,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-02-06 09:01:40,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 127 transitions. [2025-02-06 09:01:40,871 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6978021978021978 [2025-02-06 09:01:40,871 INFO L175 Difference]: Start difference. First operand has 104 places, 91 transitions, 236 flow. Second operand 2 states and 127 transitions. [2025-02-06 09:01:40,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 57 transitions, 216 flow [2025-02-06 09:01:40,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 57 transitions, 196 flow, removed 10 selfloop flow, removed 0 redundant places. [2025-02-06 09:01:40,887 INFO L231 Difference]: Finished difference. Result has 71 places, 57 transitions, 148 flow [2025-02-06 09:01:40,888 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=148, PETRI_PLACES=71, PETRI_TRANSITIONS=57} [2025-02-06 09:01:40,888 INFO L279 CegarLoopForPetriNet]: 104 programPoint places, -33 predicate places. [2025-02-06 09:01:40,888 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 57 transitions, 148 flow [2025-02-06 09:01:40,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 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) [2025-02-06 09:01:40,892 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 09:01:40,893 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 09:01:40,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-06 09:01:40,893 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2025-02-06 09:01:40,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 09:01:40,894 INFO L85 PathProgramCache]: Analyzing trace with hash -369420816, now seen corresponding path program 1 times [2025-02-06 09:01:40,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 09:01:40,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204731185] [2025-02-06 09:01:40,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 09:01:40,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 09:01:40,905 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-06 09:01:40,918 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-06 09:01:40,921 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 09:01:40,922 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 09:01:40,922 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 09:01:40,924 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-06 09:01:40,932 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-06 09:01:40,935 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 09:01:40,936 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 09:01:40,947 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 09:01:40,947 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-06 09:01:40,947 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (35 of 36 remaining) [2025-02-06 09:01:40,949 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (34 of 36 remaining) [2025-02-06 09:01:40,949 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (33 of 36 remaining) [2025-02-06 09:01:40,949 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (32 of 36 remaining) [2025-02-06 09:01:40,949 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (31 of 36 remaining) [2025-02-06 09:01:40,949 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (30 of 36 remaining) [2025-02-06 09:01:40,949 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (29 of 36 remaining) [2025-02-06 09:01:40,950 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (28 of 36 remaining) [2025-02-06 09:01:40,952 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (27 of 36 remaining) [2025-02-06 09:01:40,952 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (26 of 36 remaining) [2025-02-06 09:01:40,952 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (25 of 36 remaining) [2025-02-06 09:01:40,953 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (24 of 36 remaining) [2025-02-06 09:01:40,953 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (23 of 36 remaining) [2025-02-06 09:01:40,953 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (22 of 36 remaining) [2025-02-06 09:01:40,953 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (21 of 36 remaining) [2025-02-06 09:01:40,953 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 36 remaining) [2025-02-06 09:01:40,953 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (19 of 36 remaining) [2025-02-06 09:01:40,953 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (18 of 36 remaining) [2025-02-06 09:01:40,953 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 36 remaining) [2025-02-06 09:01:40,953 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (16 of 36 remaining) [2025-02-06 09:01:40,953 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 36 remaining) [2025-02-06 09:01:40,953 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (14 of 36 remaining) [2025-02-06 09:01:40,953 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (13 of 36 remaining) [2025-02-06 09:01:40,953 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 36 remaining) [2025-02-06 09:01:40,953 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 36 remaining) [2025-02-06 09:01:40,953 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 36 remaining) [2025-02-06 09:01:40,953 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 36 remaining) [2025-02-06 09:01:40,953 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 36 remaining) [2025-02-06 09:01:40,953 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 36 remaining) [2025-02-06 09:01:40,953 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 36 remaining) [2025-02-06 09:01:40,953 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 36 remaining) [2025-02-06 09:01:40,953 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (4 of 36 remaining) [2025-02-06 09:01:40,953 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 36 remaining) [2025-02-06 09:01:40,953 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 36 remaining) [2025-02-06 09:01:40,953 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 36 remaining) [2025-02-06 09:01:40,953 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 36 remaining) [2025-02-06 09:01:40,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-06 09:01:40,954 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-02-06 09:01:40,954 WARN L246 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-06 09:01:40,954 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2025-02-06 09:01:40,998 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 09:01:41,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 103 transitions, 276 flow [2025-02-06 09:01:41,018 INFO L124 PetriNetUnfolderBase]: 0/152 cut-off events. [2025-02-06 09:01:41,018 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2025-02-06 09:01:41,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 152 events. 0/152 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 473 event pairs, 0 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2025-02-06 09:01:41,019 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 103 transitions, 276 flow [2025-02-06 09:01:41,021 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 103 transitions, 276 flow [2025-02-06 09:01:41,022 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 09:01:41,023 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;@656062d2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 09:01:41,023 INFO L334 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2025-02-06 09:01:41,025 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 09:01:41,026 INFO L124 PetriNetUnfolderBase]: 0/22 cut-off events. [2025-02-06 09:01:41,026 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 09:01:41,026 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 09:01:41,026 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 09:01:41,026 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err4ASSERT_VIOLATIONDATA_RACE === [thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2025-02-06 09:01:41,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 09:01:41,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1179072161, now seen corresponding path program 1 times [2025-02-06 09:01:41,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 09:01:41,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147020574] [2025-02-06 09:01:41,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 09:01:41,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 09:01:41,032 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 09:01:41,034 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 09:01:41,035 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 09:01:41,035 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 09:01:41,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 09:01:41,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 09:01:41,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147020574] [2025-02-06 09:01:41,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147020574] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 09:01:41,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 09:01:41,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 09:01:41,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776502876] [2025-02-06 09:01:41,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 09:01:41,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-06 09:01:41,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 09:01:41,046 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-06 09:01:41,046 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 09:01:41,046 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 103 [2025-02-06 09:01:41,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 103 transitions, 276 flow. Second operand has 2 states, 2 states have (on average 40.0) internal successors, (80), 2 states have internal predecessors, (80), 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) [2025-02-06 09:01:41,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 09:01:41,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 103 [2025-02-06 09:01:41,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 09:01:49,818 INFO L124 PetriNetUnfolderBase]: 92844/132925 cut-off events. [2025-02-06 09:01:49,819 INFO L125 PetriNetUnfolderBase]: For 140802/140802 co-relation queries the response was YES. [2025-02-06 09:01:50,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289492 conditions, 132925 events. 92844/132925 cut-off events. For 140802/140802 co-relation queries the response was YES. Maximal size of possible extension queue 5166. Compared 1045965 event pairs, 92844 based on Foata normal form. 21845/154749 useless extension candidates. Maximal degree in co-relation 185694. Up to 114689 conditions per place. [2025-02-06 09:01:51,089 INFO L140 encePairwiseOnDemand]: 67/103 looper letters, 28 selfloop transitions, 0 changer transitions 0/64 dead transitions. [2025-02-06 09:01:51,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 64 transitions, 254 flow [2025-02-06 09:01:51,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-06 09:01:51,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-02-06 09:01:51,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 142 transitions. [2025-02-06 09:01:51,090 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6893203883495146 [2025-02-06 09:01:51,091 INFO L175 Difference]: Start difference. First operand has 118 places, 103 transitions, 276 flow. Second operand 2 states and 142 transitions. [2025-02-06 09:01:51,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 64 transitions, 254 flow [2025-02-06 09:01:51,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 64 transitions, 224 flow, removed 15 selfloop flow, removed 0 redundant places. [2025-02-06 09:01:51,123 INFO L231 Difference]: Finished difference. Result has 80 places, 64 transitions, 168 flow [2025-02-06 09:01:51,123 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=168, PETRI_PLACES=80, PETRI_TRANSITIONS=64} [2025-02-06 09:01:51,124 INFO L279 CegarLoopForPetriNet]: 118 programPoint places, -38 predicate places. [2025-02-06 09:01:51,124 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 64 transitions, 168 flow [2025-02-06 09:01:51,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 40.0) internal successors, (80), 2 states have internal predecessors, (80), 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) [2025-02-06 09:01:51,124 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 09:01:51,124 INFO L206 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 09:01:51,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-06 09:01:51,125 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2025-02-06 09:01:51,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 09:01:51,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1284370227, now seen corresponding path program 1 times [2025-02-06 09:01:51,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 09:01:51,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462149726] [2025-02-06 09:01:51,125 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 09:01:51,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 09:01:51,132 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-02-06 09:01:51,136 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-02-06 09:01:51,137 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 09:01:51,137 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 09:01:51,137 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 09:01:51,138 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-02-06 09:01:51,142 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-02-06 09:01:51,143 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 09:01:51,143 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 09:01:51,147 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 09:01:51,148 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-06 09:01:51,148 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (40 of 41 remaining) [2025-02-06 09:01:51,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (39 of 41 remaining) [2025-02-06 09:01:51,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (38 of 41 remaining) [2025-02-06 09:01:51,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (37 of 41 remaining) [2025-02-06 09:01:51,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (36 of 41 remaining) [2025-02-06 09:01:51,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (35 of 41 remaining) [2025-02-06 09:01:51,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (34 of 41 remaining) [2025-02-06 09:01:51,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (33 of 41 remaining) [2025-02-06 09:01:51,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (32 of 41 remaining) [2025-02-06 09:01:51,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (31 of 41 remaining) [2025-02-06 09:01:51,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (30 of 41 remaining) [2025-02-06 09:01:51,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (29 of 41 remaining) [2025-02-06 09:01:51,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (28 of 41 remaining) [2025-02-06 09:01:51,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (27 of 41 remaining) [2025-02-06 09:01:51,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (26 of 41 remaining) [2025-02-06 09:01:51,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (25 of 41 remaining) [2025-02-06 09:01:51,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (24 of 41 remaining) [2025-02-06 09:01:51,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (23 of 41 remaining) [2025-02-06 09:01:51,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (22 of 41 remaining) [2025-02-06 09:01:51,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (21 of 41 remaining) [2025-02-06 09:01:51,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 41 remaining) [2025-02-06 09:01:51,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (19 of 41 remaining) [2025-02-06 09:01:51,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (18 of 41 remaining) [2025-02-06 09:01:51,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 41 remaining) [2025-02-06 09:01:51,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (16 of 41 remaining) [2025-02-06 09:01:51,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 41 remaining) [2025-02-06 09:01:51,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (14 of 41 remaining) [2025-02-06 09:01:51,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (13 of 41 remaining) [2025-02-06 09:01:51,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 41 remaining) [2025-02-06 09:01:51,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 41 remaining) [2025-02-06 09:01:51,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 41 remaining) [2025-02-06 09:01:51,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 41 remaining) [2025-02-06 09:01:51,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 41 remaining) [2025-02-06 09:01:51,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 41 remaining) [2025-02-06 09:01:51,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 41 remaining) [2025-02-06 09:01:51,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 41 remaining) [2025-02-06 09:01:51,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (4 of 41 remaining) [2025-02-06 09:01:51,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 41 remaining) [2025-02-06 09:01:51,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 41 remaining) [2025-02-06 09:01:51,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 41 remaining) [2025-02-06 09:01:51,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 41 remaining) [2025-02-06 09:01:51,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-06 09:01:51,149 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-02-06 09:01:51,150 WARN L246 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-06 09:01:51,150 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2025-02-06 09:01:51,184 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 09:01:51,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 115 transitions, 318 flow [2025-02-06 09:01:51,197 INFO L124 PetriNetUnfolderBase]: 0/171 cut-off events. [2025-02-06 09:01:51,197 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2025-02-06 09:01:51,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 224 conditions, 171 events. 0/171 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 536 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2025-02-06 09:01:51,197 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 115 transitions, 318 flow [2025-02-06 09:01:51,199 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 115 transitions, 318 flow [2025-02-06 09:01:51,200 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 09:01:51,200 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;@656062d2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 09:01:51,200 INFO L334 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2025-02-06 09:01:51,201 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 09:01:51,202 INFO L124 PetriNetUnfolderBase]: 0/22 cut-off events. [2025-02-06 09:01:51,202 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 09:01:51,202 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 09:01:51,202 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 09:01:51,202 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err4ASSERT_VIOLATIONDATA_RACE === [thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2025-02-06 09:01:51,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 09:01:51,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1211372897, now seen corresponding path program 1 times [2025-02-06 09:01:51,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 09:01:51,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179567885] [2025-02-06 09:01:51,202 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 09:01:51,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 09:01:51,207 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 09:01:51,209 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 09:01:51,209 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 09:01:51,209 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 09:01:51,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 09:01:51,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 09:01:51,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179567885] [2025-02-06 09:01:51,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179567885] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 09:01:51,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 09:01:51,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 09:01:51,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620540035] [2025-02-06 09:01:51,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 09:01:51,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-06 09:01:51,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 09:01:51,217 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-06 09:01:51,217 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 09:01:51,223 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 115 [2025-02-06 09:01:51,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 115 transitions, 318 flow. Second operand has 2 states, 2 states have (on average 43.0) internal successors, (86), 2 states have internal predecessors, (86), 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) [2025-02-06 09:01:51,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 09:01:51,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 115 [2025-02-06 09:01:51,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand