./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/pthread-ext/30_Function_Pointer3_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-ext/30_Function_Pointer3_vs.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c8b500e58ad9de43c2267c6cdc33609b02abfe24fc1cf283e17f14a4a70ea61c --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 10:45:25,547 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 10:45:25,605 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2025-03-17 10:45:25,612 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 10:45:25,612 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 10:45:25,632 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 10:45:25,633 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 10:45:25,633 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 10:45:25,634 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 10:45:25,634 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 10:45:25,634 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 10:45:25,635 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 10:45:25,635 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 10:45:25,635 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 10:45:25,635 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 10:45:25,635 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 10:45:25,635 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 10:45:25,635 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 10:45:25,635 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 10:45:25,636 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 10:45:25,636 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 10:45:25,636 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 10:45:25,636 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2025-03-17 10:45:25,636 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 10:45:25,636 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 10:45:25,636 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 10:45:25,636 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 10:45:25,636 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 10:45:25,636 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 10:45:25,636 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 10:45:25,636 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 10:45:25,636 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 10:45:25,637 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 10:45:25,637 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 10:45:25,637 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 10:45:25,637 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 10:45:25,637 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 10:45:25,637 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 10:45:25,637 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 10:45:25,637 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 10:45:25,637 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 10:45:25,637 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 10:45:25,637 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8b500e58ad9de43c2267c6cdc33609b02abfe24fc1cf283e17f14a4a70ea61c [2025-03-17 10:45:25,869 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 10:45:25,878 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 10:45:25,881 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 10:45:25,882 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 10:45:25,882 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 10:45:25,884 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/30_Function_Pointer3_vs.i [2025-03-17 10:45:27,106 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c365bf928/88ce2ed72f044495929503ef6ffb5668/FLAG6e6f8cbe2 [2025-03-17 10:45:27,411 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 10:45:27,411 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/30_Function_Pointer3_vs.i [2025-03-17 10:45:27,436 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c365bf928/88ce2ed72f044495929503ef6ffb5668/FLAG6e6f8cbe2 [2025-03-17 10:45:27,662 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c365bf928/88ce2ed72f044495929503ef6ffb5668 [2025-03-17 10:45:27,664 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 10:45:27,666 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 10:45:27,668 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 10:45:27,668 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 10:45:27,671 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 10:45:27,672 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 10:45:27" (1/1) ... [2025-03-17 10:45:27,672 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62b9ba58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:45:27, skipping insertion in model container [2025-03-17 10:45:27,673 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 10:45:27" (1/1) ... [2025-03-17 10:45:27,700 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 10:45:27,896 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 10:45:27,902 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 10:45:27,934 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 10:45:27,958 INFO L204 MainTranslator]: Completed translation [2025-03-17 10:45:27,959 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:45:27 WrapperNode [2025-03-17 10:45:27,959 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 10:45:27,960 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 10:45:27,960 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 10:45:27,960 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 10:45:27,964 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:45:27" (1/1) ... [2025-03-17 10:45:27,972 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:45:27" (1/1) ... [2025-03-17 10:45:27,988 INFO L138 Inliner]: procedures = 173, calls = 16, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 103 [2025-03-17 10:45:27,989 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 10:45:27,990 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 10:45:27,990 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 10:45:27,990 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 10:45:27,994 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:45:27" (1/1) ... [2025-03-17 10:45:27,995 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:45:27" (1/1) ... [2025-03-17 10:45:27,997 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:45:27" (1/1) ... [2025-03-17 10:45:27,999 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:45:27" (1/1) ... [2025-03-17 10:45:28,003 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:45:27" (1/1) ... [2025-03-17 10:45:28,008 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:45:27" (1/1) ... [2025-03-17 10:45:28,009 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:45:27" (1/1) ... [2025-03-17 10:45:28,010 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:45:27" (1/1) ... [2025-03-17 10:45:28,015 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 10:45:28,016 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 10:45:28,016 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 10:45:28,016 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 10:45:28,016 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:45:27" (1/1) ... [2025-03-17 10:45:28,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 10:45:28,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 10:45:28,048 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 10:45:28,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 10:45:28,068 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2025-03-17 10:45:28,069 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2025-03-17 10:45:28,069 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-03-17 10:45:28,069 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-03-17 10:45:28,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 10:45:28,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-03-17 10:45:28,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 10:45:28,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 10:45:28,070 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 10:45:28,172 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 10:45:28,173 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 10:45:28,351 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 10:45:28,351 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 10:45:28,399 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 10:45:28,402 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 10:45:28,403 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 10:45:28 BoogieIcfgContainer [2025-03-17 10:45:28,403 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 10:45:28,405 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 10:45:28,405 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 10:45:28,408 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 10:45:28,408 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 10:45:27" (1/3) ... [2025-03-17 10:45:28,409 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@591948d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 10:45:28, skipping insertion in model container [2025-03-17 10:45:28,409 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:45:27" (2/3) ... [2025-03-17 10:45:28,409 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@591948d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 10:45:28, skipping insertion in model container [2025-03-17 10:45:28,410 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 10:45:28" (3/3) ... [2025-03-17 10:45:28,411 INFO L128 eAbstractionObserver]: Analyzing ICFG 30_Function_Pointer3_vs.i [2025-03-17 10:45:28,421 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 10:45:28,424 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 30_Function_Pointer3_vs.i that has 3 procedures, 101 locations, 1 initial locations, 2 loop locations, and 6 error locations. [2025-03-17 10:45:28,424 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 10:45:28,479 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 10:45:28,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 106 transitions, 220 flow [2025-03-17 10:45:28,547 INFO L124 PetriNetUnfolderBase]: 5/112 cut-off events. [2025-03-17 10:45:28,549 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 10:45:28,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 112 events. 5/112 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 135 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 99. Up to 3 conditions per place. [2025-03-17 10:45:28,553 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 106 transitions, 220 flow [2025-03-17 10:45:28,556 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 105 transitions, 217 flow [2025-03-17 10:45:28,562 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 10:45:28,571 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;@359f6369, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 10:45:28,571 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2025-03-17 10:45:28,576 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 10:45:28,577 INFO L124 PetriNetUnfolderBase]: 1/24 cut-off events. [2025-03-17 10:45:28,577 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 10:45:28,577 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 10:45:28,579 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 10:45:28,579 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err4ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2025-03-17 10:45:28,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:45:28,583 INFO L85 PathProgramCache]: Analyzing trace with hash -27150660, now seen corresponding path program 1 times [2025-03-17 10:45:28,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:45:28,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97231352] [2025-03-17 10:45:28,590 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:45:28,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:45:28,642 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 10:45:28,648 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 10:45:28,648 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:45:28,648 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:45:28,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:45:28,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:45:28,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97231352] [2025-03-17 10:45:28,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97231352] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:45:28,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:45:28,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 10:45:28,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316900272] [2025-03-17 10:45:28,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:45:28,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 10:45:28,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:45:28,772 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 10:45:28,772 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 10:45:28,783 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 106 [2025-03-17 10:45:28,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 105 transitions, 217 flow. Second operand has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 10:45:28,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 10:45:28,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 106 [2025-03-17 10:45:28,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 10:45:28,857 INFO L124 PetriNetUnfolderBase]: 20/207 cut-off events. [2025-03-17 10:45:28,857 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-17 10:45:28,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 207 events. 20/207 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 532 event pairs, 4 based on Foata normal form. 34/222 useless extension candidates. Maximal degree in co-relation 234. Up to 25 conditions per place. [2025-03-17 10:45:28,862 INFO L140 encePairwiseOnDemand]: 94/106 looper letters, 11 selfloop transitions, 3 changer transitions 0/96 dead transitions. [2025-03-17 10:45:28,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 96 transitions, 230 flow [2025-03-17 10:45:28,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 10:45:28,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 10:45:28,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 298 transitions. [2025-03-17 10:45:28,875 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.9371069182389937 [2025-03-17 10:45:28,876 INFO L175 Difference]: Start difference. First operand has 106 places, 105 transitions, 217 flow. Second operand 3 states and 298 transitions. [2025-03-17 10:45:28,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 96 transitions, 230 flow [2025-03-17 10:45:28,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 96 transitions, 229 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 10:45:28,882 INFO L231 Difference]: Finished difference. Result has 96 places, 93 transitions, 212 flow [2025-03-17 10:45:28,884 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=212, PETRI_PLACES=96, PETRI_TRANSITIONS=93} [2025-03-17 10:45:28,886 INFO L279 CegarLoopForPetriNet]: 106 programPoint places, -10 predicate places. [2025-03-17 10:45:28,886 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 93 transitions, 212 flow [2025-03-17 10:45:28,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 10:45:28,887 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 10:45:28,887 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 10:45:28,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 10:45:28,887 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err4ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2025-03-17 10:45:28,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:45:28,888 INFO L85 PathProgramCache]: Analyzing trace with hash 722173890, now seen corresponding path program 1 times [2025-03-17 10:45:28,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:45:28,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175927489] [2025-03-17 10:45:28,888 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:45:28,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:45:28,897 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-17 10:45:28,903 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-17 10:45:28,904 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:45:28,904 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 10:45:28,904 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 10:45:28,906 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-17 10:45:28,912 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-17 10:45:28,913 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:45:28,913 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 10:45:28,931 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 10:45:28,931 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 10:45:28,932 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2025-03-17 10:45:28,934 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (12 of 14 remaining) [2025-03-17 10:45:28,934 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (11 of 14 remaining) [2025-03-17 10:45:28,934 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (10 of 14 remaining) [2025-03-17 10:45:28,934 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (9 of 14 remaining) [2025-03-17 10:45:28,935 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (8 of 14 remaining) [2025-03-17 10:45:28,935 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 14 remaining) [2025-03-17 10:45:28,935 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 14 remaining) [2025-03-17 10:45:28,935 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (5 of 14 remaining) [2025-03-17 10:45:28,935 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (4 of 14 remaining) [2025-03-17 10:45:28,935 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (3 of 14 remaining) [2025-03-17 10:45:28,935 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (2 of 14 remaining) [2025-03-17 10:45:28,935 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (1 of 14 remaining) [2025-03-17 10:45:28,935 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 14 remaining) [2025-03-17 10:45:28,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 10:45:28,935 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-17 10:45:28,938 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 10:45:28,939 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-03-17 10:45:28,977 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 10:45:28,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 185 transitions, 390 flow [2025-03-17 10:45:29,009 INFO L124 PetriNetUnfolderBase]: 7/184 cut-off events. [2025-03-17 10:45:29,010 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-17 10:45:29,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 184 events. 7/184 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 382 event pairs, 0 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 191. Up to 3 conditions per place. [2025-03-17 10:45:29,012 INFO L82 GeneralOperation]: Start removeDead. Operand has 185 places, 185 transitions, 390 flow [2025-03-17 10:45:29,014 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 169 places, 168 transitions, 349 flow [2025-03-17 10:45:29,015 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 10:45:29,015 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;@359f6369, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 10:45:29,015 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2025-03-17 10:45:29,018 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 10:45:29,018 INFO L124 PetriNetUnfolderBase]: 1/24 cut-off events. [2025-03-17 10:45:29,018 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 10:45:29,019 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 10:45:29,019 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 10:45:29,019 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err4ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2025-03-17 10:45:29,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:45:29,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1210109004, now seen corresponding path program 1 times [2025-03-17 10:45:29,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:45:29,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434756095] [2025-03-17 10:45:29,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:45:29,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:45:29,031 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 10:45:29,034 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 10:45:29,035 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:45:29,035 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:45:29,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:45:29,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:45:29,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434756095] [2025-03-17 10:45:29,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434756095] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:45:29,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:45:29,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 10:45:29,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280690240] [2025-03-17 10:45:29,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:45:29,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 10:45:29,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:45:29,066 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 10:45:29,066 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 10:45:29,085 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 185 [2025-03-17 10:45:29,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 168 transitions, 349 flow. Second operand has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 10:45:29,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 10:45:29,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 185 [2025-03-17 10:45:29,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 10:45:29,288 INFO L124 PetriNetUnfolderBase]: 184/1312 cut-off events. [2025-03-17 10:45:29,289 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2025-03-17 10:45:29,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1638 conditions, 1312 events. 184/1312 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 8759 event pairs, 59 based on Foata normal form. 171/1375 useless extension candidates. Maximal degree in co-relation 1615. Up to 137 conditions per place. [2025-03-17 10:45:29,302 INFO L140 encePairwiseOnDemand]: 168/185 looper letters, 18 selfloop transitions, 4 changer transitions 0/159 dead transitions. [2025-03-17 10:45:29,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 159 transitions, 383 flow [2025-03-17 10:45:29,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 10:45:29,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 10:45:29,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 503 transitions. [2025-03-17 10:45:29,310 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.9063063063063063 [2025-03-17 10:45:29,310 INFO L175 Difference]: Start difference. First operand has 169 places, 168 transitions, 349 flow. Second operand 3 states and 503 transitions. [2025-03-17 10:45:29,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 159 transitions, 383 flow [2025-03-17 10:45:29,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 159 transitions, 382 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 10:45:29,314 INFO L231 Difference]: Finished difference. Result has 155 places, 153 transitions, 344 flow [2025-03-17 10:45:29,314 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=344, PETRI_PLACES=155, PETRI_TRANSITIONS=153} [2025-03-17 10:45:29,315 INFO L279 CegarLoopForPetriNet]: 169 programPoint places, -14 predicate places. [2025-03-17 10:45:29,315 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 153 transitions, 344 flow [2025-03-17 10:45:29,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 10:45:29,316 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 10:45:29,316 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 10:45:29,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 10:45:29,316 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err4ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2025-03-17 10:45:29,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:45:29,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1967834845, now seen corresponding path program 1 times [2025-03-17 10:45:29,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:45:29,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084699923] [2025-03-17 10:45:29,317 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:45:29,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:45:29,328 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-17 10:45:29,333 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-17 10:45:29,333 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:45:29,333 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 10:45:29,333 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 10:45:29,336 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-17 10:45:29,341 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-17 10:45:29,343 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:45:29,343 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 10:45:29,349 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 10:45:29,350 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 10:45:29,350 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 20 remaining) [2025-03-17 10:45:29,350 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (18 of 20 remaining) [2025-03-17 10:45:29,350 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (17 of 20 remaining) [2025-03-17 10:45:29,350 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (16 of 20 remaining) [2025-03-17 10:45:29,350 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (15 of 20 remaining) [2025-03-17 10:45:29,350 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (14 of 20 remaining) [2025-03-17 10:45:29,350 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 20 remaining) [2025-03-17 10:45:29,350 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 20 remaining) [2025-03-17 10:45:29,352 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (11 of 20 remaining) [2025-03-17 10:45:29,353 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (10 of 20 remaining) [2025-03-17 10:45:29,353 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (9 of 20 remaining) [2025-03-17 10:45:29,353 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (8 of 20 remaining) [2025-03-17 10:45:29,353 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (7 of 20 remaining) [2025-03-17 10:45:29,353 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (6 of 20 remaining) [2025-03-17 10:45:29,353 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (5 of 20 remaining) [2025-03-17 10:45:29,353 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (4 of 20 remaining) [2025-03-17 10:45:29,353 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (3 of 20 remaining) [2025-03-17 10:45:29,353 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (2 of 20 remaining) [2025-03-17 10:45:29,353 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 20 remaining) [2025-03-17 10:45:29,353 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 20 remaining) [2025-03-17 10:45:29,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 10:45:29,353 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-17 10:45:29,354 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 10:45:29,354 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-03-17 10:45:29,409 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 10:45:29,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 263 places, 264 transitions, 564 flow [2025-03-17 10:45:29,453 INFO L124 PetriNetUnfolderBase]: 9/256 cut-off events. [2025-03-17 10:45:29,453 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-03-17 10:45:29,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 256 events. 9/256 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 733 event pairs, 0 based on Foata normal form. 0/227 useless extension candidates. Maximal degree in co-relation 267. Up to 4 conditions per place. [2025-03-17 10:45:29,455 INFO L82 GeneralOperation]: Start removeDead. Operand has 263 places, 264 transitions, 564 flow [2025-03-17 10:45:29,456 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 232 places, 231 transitions, 483 flow [2025-03-17 10:45:29,457 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 10:45:29,457 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;@359f6369, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 10:45:29,457 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2025-03-17 10:45:29,459 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 10:45:29,459 INFO L124 PetriNetUnfolderBase]: 1/24 cut-off events. [2025-03-17 10:45:29,459 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 10:45:29,459 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 10:45:29,459 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 10:45:29,459 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err4ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2025-03-17 10:45:29,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:45:29,460 INFO L85 PathProgramCache]: Analyzing trace with hash 653104363, now seen corresponding path program 1 times [2025-03-17 10:45:29,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:45:29,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533280336] [2025-03-17 10:45:29,460 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:45:29,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:45:29,465 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 10:45:29,467 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 10:45:29,467 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:45:29,468 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:45:29,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:45:29,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:45:29,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533280336] [2025-03-17 10:45:29,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533280336] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:45:29,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:45:29,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 10:45:29,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146258668] [2025-03-17 10:45:29,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:45:29,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 10:45:29,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:45:29,495 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 10:45:29,495 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 10:45:29,522 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 264 [2025-03-17 10:45:29,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 231 transitions, 483 flow. Second operand has 3 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 10:45:29,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 10:45:29,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 264 [2025-03-17 10:45:29,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 10:45:30,359 INFO L124 PetriNetUnfolderBase]: 1166/6098 cut-off events. [2025-03-17 10:45:30,359 INFO L125 PetriNetUnfolderBase]: For 703/703 co-relation queries the response was YES. [2025-03-17 10:45:30,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7997 conditions, 6098 events. 1166/6098 cut-off events. For 703/703 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 59686 event pairs, 476 based on Foata normal form. 758/6340 useless extension candidates. Maximal degree in co-relation 7973. Up to 831 conditions per place. [2025-03-17 10:45:30,407 INFO L140 encePairwiseOnDemand]: 242/264 looper letters, 25 selfloop transitions, 5 changer transitions 0/222 dead transitions. [2025-03-17 10:45:30,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 222 transitions, 540 flow [2025-03-17 10:45:30,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 10:45:30,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 10:45:30,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 708 transitions. [2025-03-17 10:45:30,411 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8939393939393939 [2025-03-17 10:45:30,411 INFO L175 Difference]: Start difference. First operand has 232 places, 231 transitions, 483 flow. Second operand 3 states and 708 transitions. [2025-03-17 10:45:30,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 222 transitions, 540 flow [2025-03-17 10:45:30,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 222 transitions, 535 flow, removed 2 selfloop flow, removed 1 redundant places. [2025-03-17 10:45:30,415 INFO L231 Difference]: Finished difference. Result has 214 places, 213 transitions, 476 flow [2025-03-17 10:45:30,416 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=476, PETRI_PLACES=214, PETRI_TRANSITIONS=213} [2025-03-17 10:45:30,416 INFO L279 CegarLoopForPetriNet]: 232 programPoint places, -18 predicate places. [2025-03-17 10:45:30,416 INFO L471 AbstractCegarLoop]: Abstraction has has 214 places, 213 transitions, 476 flow [2025-03-17 10:45:30,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 10:45:30,417 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 10:45:30,417 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 10:45:30,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 10:45:30,417 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err4ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2025-03-17 10:45:30,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:45:30,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1193443982, now seen corresponding path program 1 times [2025-03-17 10:45:30,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:45:30,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596458626] [2025-03-17 10:45:30,418 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:45:30,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:45:30,425 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-17 10:45:30,429 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-17 10:45:30,429 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:45:30,429 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 10:45:30,430 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 10:45:30,432 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-17 10:45:30,436 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-17 10:45:30,436 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:45:30,436 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 10:45:30,441 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 10:45:30,441 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 10:45:30,441 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 26 remaining) [2025-03-17 10:45:30,441 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (24 of 26 remaining) [2025-03-17 10:45:30,441 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (23 of 26 remaining) [2025-03-17 10:45:30,441 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (22 of 26 remaining) [2025-03-17 10:45:30,441 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (21 of 26 remaining) [2025-03-17 10:45:30,442 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (20 of 26 remaining) [2025-03-17 10:45:30,442 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 26 remaining) [2025-03-17 10:45:30,442 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 26 remaining) [2025-03-17 10:45:30,442 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (17 of 26 remaining) [2025-03-17 10:45:30,442 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (16 of 26 remaining) [2025-03-17 10:45:30,442 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (15 of 26 remaining) [2025-03-17 10:45:30,442 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (14 of 26 remaining) [2025-03-17 10:45:30,442 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (13 of 26 remaining) [2025-03-17 10:45:30,442 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (12 of 26 remaining) [2025-03-17 10:45:30,442 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (11 of 26 remaining) [2025-03-17 10:45:30,442 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (10 of 26 remaining) [2025-03-17 10:45:30,442 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (9 of 26 remaining) [2025-03-17 10:45:30,442 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (8 of 26 remaining) [2025-03-17 10:45:30,442 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (7 of 26 remaining) [2025-03-17 10:45:30,443 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (6 of 26 remaining) [2025-03-17 10:45:30,443 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (5 of 26 remaining) [2025-03-17 10:45:30,443 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (4 of 26 remaining) [2025-03-17 10:45:30,443 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (3 of 26 remaining) [2025-03-17 10:45:30,443 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 26 remaining) [2025-03-17 10:45:30,443 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 26 remaining) [2025-03-17 10:45:30,443 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 26 remaining) [2025-03-17 10:45:30,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 10:45:30,443 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-17 10:45:30,444 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 10:45:30,444 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2025-03-17 10:45:30,492 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 10:45:30,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 341 places, 343 transitions, 742 flow [2025-03-17 10:45:30,527 INFO L124 PetriNetUnfolderBase]: 11/328 cut-off events. [2025-03-17 10:45:30,528 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-03-17 10:45:30,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 353 conditions, 328 events. 11/328 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1138 event pairs, 0 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 344. Up to 5 conditions per place. [2025-03-17 10:45:30,531 INFO L82 GeneralOperation]: Start removeDead. Operand has 341 places, 343 transitions, 742 flow [2025-03-17 10:45:30,534 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 295 places, 294 transitions, 619 flow [2025-03-17 10:45:30,538 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 10:45:30,538 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;@359f6369, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 10:45:30,538 INFO L334 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2025-03-17 10:45:30,540 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 10:45:30,540 INFO L124 PetriNetUnfolderBase]: 1/24 cut-off events. [2025-03-17 10:45:30,540 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 10:45:30,540 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 10:45:30,540 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 10:45:30,540 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err4ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2025-03-17 10:45:30,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:45:30,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1698164583, now seen corresponding path program 1 times [2025-03-17 10:45:30,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:45:30,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729601047] [2025-03-17 10:45:30,541 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:45:30,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:45:30,546 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 10:45:30,547 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 10:45:30,547 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:45:30,547 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:45:30,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:45:30,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:45:30,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729601047] [2025-03-17 10:45:30,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729601047] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:45:30,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:45:30,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 10:45:30,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000921248] [2025-03-17 10:45:30,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:45:30,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 10:45:30,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:45:30,573 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 10:45:30,573 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 10:45:30,602 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 278 out of 343 [2025-03-17 10:45:30,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 294 transitions, 619 flow. Second operand has 3 states, 3 states have (on average 279.0) internal successors, (837), 3 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 10:45:30,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 10:45:30,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 278 of 343 [2025-03-17 10:45:30,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 10:45:33,864 INFO L124 PetriNetUnfolderBase]: 6352/26020 cut-off events. [2025-03-17 10:45:33,864 INFO L125 PetriNetUnfolderBase]: For 5308/5308 co-relation queries the response was YES. [2025-03-17 10:45:34,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35984 conditions, 26020 events. 6352/26020 cut-off events. For 5308/5308 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 318113 event pairs, 2991 based on Foata normal form. 3181/26968 useless extension candidates. Maximal degree in co-relation 35959. Up to 4695 conditions per place. [2025-03-17 10:45:34,195 INFO L140 encePairwiseOnDemand]: 316/343 looper letters, 32 selfloop transitions, 6 changer transitions 0/285 dead transitions. [2025-03-17 10:45:34,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 285 transitions, 701 flow [2025-03-17 10:45:34,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 10:45:34,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 10:45:34,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 913 transitions. [2025-03-17 10:45:34,201 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8872691933916423 [2025-03-17 10:45:34,201 INFO L175 Difference]: Start difference. First operand has 295 places, 294 transitions, 619 flow. Second operand 3 states and 913 transitions. [2025-03-17 10:45:34,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 285 transitions, 701 flow [2025-03-17 10:45:34,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 285 transitions, 688 flow, removed 6 selfloop flow, removed 1 redundant places. [2025-03-17 10:45:34,209 INFO L231 Difference]: Finished difference. Result has 273 places, 273 transitions, 608 flow [2025-03-17 10:45:34,209 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=343, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=608, PETRI_PLACES=273, PETRI_TRANSITIONS=273} [2025-03-17 10:45:34,210 INFO L279 CegarLoopForPetriNet]: 295 programPoint places, -22 predicate places. [2025-03-17 10:45:34,210 INFO L471 AbstractCegarLoop]: Abstraction has has 273 places, 273 transitions, 608 flow [2025-03-17 10:45:34,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 279.0) internal successors, (837), 3 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 10:45:34,210 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 10:45:34,210 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 10:45:34,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 10:45:34,211 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err4ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2025-03-17 10:45:34,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:45:34,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1167096099, now seen corresponding path program 1 times [2025-03-17 10:45:34,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:45:34,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129396808] [2025-03-17 10:45:34,211 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:45:34,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:45:34,221 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-03-17 10:45:34,228 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-03-17 10:45:34,230 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:45:34,231 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 10:45:34,231 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 10:45:34,234 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-03-17 10:45:34,244 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-03-17 10:45:34,244 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:45:34,244 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 10:45:34,252 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 10:45:34,253 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 10:45:34,253 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (31 of 32 remaining) [2025-03-17 10:45:34,253 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (30 of 32 remaining) [2025-03-17 10:45:34,253 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (29 of 32 remaining) [2025-03-17 10:45:34,253 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (28 of 32 remaining) [2025-03-17 10:45:34,253 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (27 of 32 remaining) [2025-03-17 10:45:34,253 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (26 of 32 remaining) [2025-03-17 10:45:34,253 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (25 of 32 remaining) [2025-03-17 10:45:34,254 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 32 remaining) [2025-03-17 10:45:34,254 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (23 of 32 remaining) [2025-03-17 10:45:34,254 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (22 of 32 remaining) [2025-03-17 10:45:34,254 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (21 of 32 remaining) [2025-03-17 10:45:34,254 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (20 of 32 remaining) [2025-03-17 10:45:34,254 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (19 of 32 remaining) [2025-03-17 10:45:34,254 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (18 of 32 remaining) [2025-03-17 10:45:34,254 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (17 of 32 remaining) [2025-03-17 10:45:34,254 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (16 of 32 remaining) [2025-03-17 10:45:34,254 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (15 of 32 remaining) [2025-03-17 10:45:34,254 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (14 of 32 remaining) [2025-03-17 10:45:34,254 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (13 of 32 remaining) [2025-03-17 10:45:34,254 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (12 of 32 remaining) [2025-03-17 10:45:34,254 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (11 of 32 remaining) [2025-03-17 10:45:34,255 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (10 of 32 remaining) [2025-03-17 10:45:34,255 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (9 of 32 remaining) [2025-03-17 10:45:34,255 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (8 of 32 remaining) [2025-03-17 10:45:34,255 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (7 of 32 remaining) [2025-03-17 10:45:34,255 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (6 of 32 remaining) [2025-03-17 10:45:34,255 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (5 of 32 remaining) [2025-03-17 10:45:34,255 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (4 of 32 remaining) [2025-03-17 10:45:34,255 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 32 remaining) [2025-03-17 10:45:34,255 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 32 remaining) [2025-03-17 10:45:34,255 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 32 remaining) [2025-03-17 10:45:34,255 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 32 remaining) [2025-03-17 10:45:34,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 10:45:34,256 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-17 10:45:34,256 WARN L246 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 10:45:34,256 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2025-03-17 10:45:34,323 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 10:45:34,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 419 places, 422 transitions, 924 flow [2025-03-17 10:45:34,477 INFO L124 PetriNetUnfolderBase]: 13/400 cut-off events. [2025-03-17 10:45:34,478 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2025-03-17 10:45:34,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 433 conditions, 400 events. 13/400 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1548 event pairs, 0 based on Foata normal form. 0/355 useless extension candidates. Maximal degree in co-relation 422. Up to 6 conditions per place. [2025-03-17 10:45:34,481 INFO L82 GeneralOperation]: Start removeDead. Operand has 419 places, 422 transitions, 924 flow [2025-03-17 10:45:34,483 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 358 places, 357 transitions, 757 flow [2025-03-17 10:45:34,484 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 10:45:34,486 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;@359f6369, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 10:45:34,486 INFO L334 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2025-03-17 10:45:34,487 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 10:45:34,487 INFO L124 PetriNetUnfolderBase]: 1/24 cut-off events. [2025-03-17 10:45:34,487 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 10:45:34,487 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 10:45:34,487 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 10:45:34,488 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err4ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2025-03-17 10:45:34,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:45:34,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1548790118, now seen corresponding path program 1 times [2025-03-17 10:45:34,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:45:34,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262459477] [2025-03-17 10:45:34,488 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:45:34,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:45:34,494 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 10:45:34,497 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 10:45:34,497 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:45:34,497 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:45:34,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:45:34,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:45:34,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262459477] [2025-03-17 10:45:34,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262459477] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:45:34,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:45:34,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 10:45:34,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376904304] [2025-03-17 10:45:34,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:45:34,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 10:45:34,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:45:34,518 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 10:45:34,518 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 10:45:34,551 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 341 out of 422 [2025-03-17 10:45:34,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 357 transitions, 757 flow. Second operand has 3 states, 3 states have (on average 342.0) internal successors, (1026), 3 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 10:45:34,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 10:45:34,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 341 of 422 [2025-03-17 10:45:34,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 10:45:50,929 INFO L124 PetriNetUnfolderBase]: 31994/109070 cut-off events. [2025-03-17 10:45:50,929 INFO L125 PetriNetUnfolderBase]: For 34152/34152 co-relation queries the response was YES. [2025-03-17 10:45:52,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158059 conditions, 109070 events. 31994/109070 cut-off events. For 34152/34152 co-relation queries the response was YES. Maximal size of possible extension queue 2092. Compared 1554306 event pairs, 16532 based on Foata normal form. 13020/113005 useless extension candidates. Maximal degree in co-relation 158033. Up to 24103 conditions per place. [2025-03-17 10:45:53,045 INFO L140 encePairwiseOnDemand]: 390/422 looper letters, 39 selfloop transitions, 7 changer transitions 0/348 dead transitions. [2025-03-17 10:45:53,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 348 transitions, 866 flow [2025-03-17 10:45:53,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 10:45:53,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 10:45:53,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1118 transitions. [2025-03-17 10:45:53,047 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8830963665086888 [2025-03-17 10:45:53,047 INFO L175 Difference]: Start difference. First operand has 358 places, 357 transitions, 757 flow. Second operand 3 states and 1118 transitions. [2025-03-17 10:45:53,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 348 transitions, 866 flow [2025-03-17 10:45:53,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 348 transitions, 841 flow, removed 12 selfloop flow, removed 1 redundant places. [2025-03-17 10:45:53,070 INFO L231 Difference]: Finished difference. Result has 332 places, 333 transitions, 740 flow [2025-03-17 10:45:53,071 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=740, PETRI_PLACES=332, PETRI_TRANSITIONS=333} [2025-03-17 10:45:53,071 INFO L279 CegarLoopForPetriNet]: 358 programPoint places, -26 predicate places. [2025-03-17 10:45:53,071 INFO L471 AbstractCegarLoop]: Abstraction has has 332 places, 333 transitions, 740 flow [2025-03-17 10:45:53,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 342.0) internal successors, (1026), 3 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 10:45:53,072 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 10:45:53,072 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 10:45:53,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-17 10:45:53,072 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err4ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2025-03-17 10:45:53,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:45:53,073 INFO L85 PathProgramCache]: Analyzing trace with hash 425875970, now seen corresponding path program 1 times [2025-03-17 10:45:53,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:45:53,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779459581] [2025-03-17 10:45:53,073 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:45:53,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:45:53,081 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-03-17 10:45:53,086 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-03-17 10:45:53,086 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:45:53,086 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 10:45:53,086 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 10:45:53,089 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-03-17 10:45:53,094 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-03-17 10:45:53,094 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:45:53,094 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 10:45:53,100 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 10:45:53,102 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 10:45:53,102 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (37 of 38 remaining) [2025-03-17 10:45:53,102 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (36 of 38 remaining) [2025-03-17 10:45:53,102 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (35 of 38 remaining) [2025-03-17 10:45:53,102 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (34 of 38 remaining) [2025-03-17 10:45:53,102 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (33 of 38 remaining) [2025-03-17 10:45:53,103 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (32 of 38 remaining) [2025-03-17 10:45:53,103 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (31 of 38 remaining) [2025-03-17 10:45:53,103 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 38 remaining) [2025-03-17 10:45:53,103 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (29 of 38 remaining) [2025-03-17 10:45:53,103 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (28 of 38 remaining) [2025-03-17 10:45:53,103 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (27 of 38 remaining) [2025-03-17 10:45:53,103 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (26 of 38 remaining) [2025-03-17 10:45:53,103 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (25 of 38 remaining) [2025-03-17 10:45:53,103 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (24 of 38 remaining) [2025-03-17 10:45:53,103 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (23 of 38 remaining) [2025-03-17 10:45:53,103 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (22 of 38 remaining) [2025-03-17 10:45:53,103 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (21 of 38 remaining) [2025-03-17 10:45:53,103 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (20 of 38 remaining) [2025-03-17 10:45:53,103 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (19 of 38 remaining) [2025-03-17 10:45:53,104 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (18 of 38 remaining) [2025-03-17 10:45:53,104 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (17 of 38 remaining) [2025-03-17 10:45:53,104 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (16 of 38 remaining) [2025-03-17 10:45:53,104 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (15 of 38 remaining) [2025-03-17 10:45:53,104 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (14 of 38 remaining) [2025-03-17 10:45:53,104 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (13 of 38 remaining) [2025-03-17 10:45:53,104 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (12 of 38 remaining) [2025-03-17 10:45:53,104 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (11 of 38 remaining) [2025-03-17 10:45:53,104 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (10 of 38 remaining) [2025-03-17 10:45:53,104 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (9 of 38 remaining) [2025-03-17 10:45:53,104 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (8 of 38 remaining) [2025-03-17 10:45:53,104 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (7 of 38 remaining) [2025-03-17 10:45:53,104 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (6 of 38 remaining) [2025-03-17 10:45:53,105 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (5 of 38 remaining) [2025-03-17 10:45:53,105 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 38 remaining) [2025-03-17 10:45:53,105 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 38 remaining) [2025-03-17 10:45:53,105 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 38 remaining) [2025-03-17 10:45:53,105 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 38 remaining) [2025-03-17 10:45:53,105 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 38 remaining) [2025-03-17 10:45:53,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-17 10:45:53,105 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-17 10:45:53,106 WARN L246 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 10:45:53,106 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2025-03-17 10:45:53,276 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 10:45:53,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 497 places, 501 transitions, 1110 flow [2025-03-17 10:45:53,327 INFO L124 PetriNetUnfolderBase]: 15/472 cut-off events. [2025-03-17 10:45:53,327 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2025-03-17 10:45:53,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 514 conditions, 472 events. 15/472 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1968 event pairs, 0 based on Foata normal form. 0/419 useless extension candidates. Maximal degree in co-relation 501. Up to 7 conditions per place. [2025-03-17 10:45:53,337 INFO L82 GeneralOperation]: Start removeDead. Operand has 497 places, 501 transitions, 1110 flow [2025-03-17 10:45:53,340 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 421 places, 420 transitions, 897 flow [2025-03-17 10:45:53,341 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 10:45:53,341 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;@359f6369, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 10:45:53,341 INFO L334 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2025-03-17 10:45:53,342 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 10:45:53,342 INFO L124 PetriNetUnfolderBase]: 1/24 cut-off events. [2025-03-17 10:45:53,342 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 10:45:53,342 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 10:45:53,342 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 10:45:53,342 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err4ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE (and 40 more)] === [2025-03-17 10:45:53,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:45:53,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1101257548, now seen corresponding path program 1 times [2025-03-17 10:45:53,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:45:53,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971289999] [2025-03-17 10:45:53,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:45:53,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:45:53,350 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 10:45:53,353 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 10:45:53,354 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:45:53,354 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:45:53,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:45:53,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:45:53,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971289999] [2025-03-17 10:45:53,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971289999] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:45:53,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:45:53,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 10:45:53,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116462803] [2025-03-17 10:45:53,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:45:53,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 10:45:53,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:45:53,375 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 10:45:53,376 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 10:45:53,416 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 404 out of 501 [2025-03-17 10:45:53,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 420 transitions, 897 flow. Second operand has 3 states, 3 states have (on average 405.0) internal successors, (1215), 3 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 10:45:53,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 10:45:53,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 404 of 501 [2025-03-17 10:45:53,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand